SiUS091601EA Service Manual Inverter Pair Wall Mounted Type FTX-N/U Series Floor Standing Type FVXS-V Series Duct Connected Type FDMQ-R Series [Applied Models] Inverter Pair : Heat Pump
SiUS091601EA Introduction ....................................................................................... 1 1. Safety Cautions...........................................................................................2 1.1 Warnings and Cautions Regarding Safety of Workers................................. 2 1.2 Warnings and Cautions Regarding Safety of Users..................................... 4 2. Icons Used .........................................................................................
SiUS091601EA 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 Thermostat Control..................................................................................... 53 NIGHT SET Mode ...................................................................................... 54 ECONO Operation .................................................................................... 55 INTELLIGENT EYE Operation ................................................................... 56 POWERFUL Operation .............................
SiUS091601EA 3.2 ARC466 Series......................................................................................... 114 3.3 BRC1E73 ................................................................................................. 117 3.4 BRC082A43 ............................................................................................. 119 4. Error Codes and Description...................................................................123 5. Troubleshooting for FTX, FVXS Series....................
SiUS091601EA 8.4 8.5 8.6 8.7 8.8 8.9 8.10 8.11 8.12 8.13 Electronic Expansion Valve Check........................................................... 184 Four Way Valve Performance Check ....................................................... 185 Inverter Unit Refrigerant System Check................................................... 185 Inverter Analyzer Check ........................................................................... 186 Rotation Pulse Check on the Outdoor Unit PCB .....................
SiUS091601EA Introduction 1. Safety Cautions...........................................................................................2 1.1 Warnings and Cautions Regarding Safety of Workers................................. 2 1.2 Warnings and Cautions Regarding Safety of Users..................................... 4 2. Icons Used ..................................................................................................7 3. Revision History ..........................................................
SiUS091601EA Safety Cautions 1. Safety Cautions Be sure to read the following safety cautions before conducting repair work. After the repair work is complete, be sure to conduct a test operation to ensure that the equipment operates normally, and explain the cautions for operating the product to the customer. This manual is for the person in charge of maintenance and inspection. Caution Items The caution items are classified into Warning and Caution.
Safety Cautions SiUS091601EA Warning Be sure to discharge the capacitor completely before conducting repair work. The step-up capacitor supplies high-voltage electricity to the electrical components of the outdoor unit. A charged capacitor may cause an electrical shock. Do not turn the air conditioner on or off by plugging in or unplugging the power cable. Plugging in or unplugging the power cable to operate the equipment may cause an electrical shock or fire.
SiUS091601EA Safety Cautions Caution Be sure to check that the refrigerating cycle section has cooled down enough before conducting repair work. Working on the unit when the refrigerating cycle section is hot may cause burns. Conduct welding work in a well-ventilated place. Using the welder in an enclosed room may cause oxygen deficiency. 1.2 Warnings and Cautions Regarding Safety of Users Warning Do not store the equipment in a room with fire sources (e.g.
Safety Cautions SiUS091601EA Warning Do not mix air or gas other than the specified refrigerant (R-32 / R-410A / R-22) in the refrigerant system. If air enters the refrigerant system, an excessively high pressure results, causing equipment damage and injury. If the refrigerant gas leaks, be sure to locate the leaking point and repair it before charging the refrigerant. After charging the refrigerant, make sure that there is no leak.
SiUS091601EA Safety Cautions Caution Be sure to measure insulation resistance after the repair, and make sure that the resistance is 1 M or higher. Faulty insulation may cause an electrical shock. Be sure to check the drainage of the indoor unit after the repair. Faulty drainage may cause water to enter the room and wet the furniture and floor. Do not tilt the unit when removing it. The water inside the unit may spill and wet the furniture and floor.
Icons Used SiUS091601EA 2. Icons Used The following icons are used to attract the attention of the reader to specific information. Icon Warning Caution Note Reference 7 Type of Description Information Warning Warning is used when there is danger of personal injury. Caution Note Reference Caution is used when there is danger that the reader, through incorrect manipulation, may damage equipment, lose data, get an unexpected result or have to restart (part of) a procedure.
SiUS091601EA Revision History 3.
SiUS091601EA Part 1 General Information 1. Applicable Models .....................................................................................10 2. Functions...................................................................................................
SiUS091601EA Applicable Models 1.
Functions SiUS091601EA 2.
SiUS091601EA Category Worry Free (Reliability & Durability) Work & Servicing Functions Functions FTX FDMQ FVXS Wired R/C Wireless R/C 09 12 15 18/24 Auto-restart (after power failure) Self-diagnosis (R/C, LED) Anti-corrosion treatment of outdoor heat exchanger Multi-split/split type compatible indoor unit — — — — Chargeless 32.8 ft. (10m) 32.8 ft. (10m) 32.8 ft. (10m) 32.8 ft. (10m) 32.8 ft. (10m) 32.8 ft.
SiUS091601EA Part 2 Specifications 1. Specifications ............................................................................................
SiUS091601EA Specifications 1. Specifications Model Indoor Unit Outdoor Unit Power Supply Capacity Rated (Min. ~ Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min. ~ Max.) Power Factor (Rated) COP Rated (Min. ~ Max.) EER Rated (Min. ~ Max.) SEER / HSPF Piping Liquid Connections Gas Drain Heat Insulation Max. Interunit Piping Length Max.
Specifications Model SiUS091601EA Indoor Unit Outdoor Unit Power Supply Capacity Rated (Min. ~ Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min. ~ Max.) Power Factor (Rated) COP Rated (Min. ~ Max.) EER Rated (Min. ~ Max.) SEER / HSPF Piping Liquid Connections Gas Drain Heat Insulation Max. Interunit Piping Length Max.
SiUS091601EA Model Specifications Indoor Unit Outdoor Unit Power Supply Capacity Rated (Min. ~ Max.) Power Consumption Rated (Min. ~ Max.) Power Factor (Rated) COP (Min. ~ Max.) EER (Min. ~ Max.) SEER / HSPF Piping Liquid Connections Gas Drain Max. Interunit Piping Length Max. Interunit Height Difference Chargeless Amount of Additional Charge of Refrigerant Indoor Unit Front Panel Color (Munsell No.
Specifications Model SiUS091601EA Indoor Unit Outdoor Unit Power Supply Capacity Rated (Min. ~ Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min. ~ Max.) Power Factor (Rated) COP Rated (Min. ~ Max.) EER Rated (Min. ~ Max.) SEER / HSPF Piping Liquid Connections Gas Drain Heat Insulation Max. Interunit Piping Length Max.
SiUS091601EA Model Specifications Indoor Unit Outdoor Unit Power Supply Capacity Rated (Min. ~ Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min. ~ Max.) Power Factor (Rated) COP Rated (Min. ~ Max.) EER Rated (Min. ~ Max.) SEER / HSPF Piping Liquid Connections Gas Drain Heat Insulation Max. Interunit Piping Length Max.
Specifications Model SiUS091601EA Indoor Unit Outdoor Unit Power Supply Capacity (Min. ~ Max.) 4 Capacity 3, 4 FDMQ12RVJU RXL12QMVJU9 kW Btu/h kcal/h kW Btu/h kcal/h COP (Min. ~ Max.) EER (Min. ~ Max.) SEER / HSPF Indoor Unit Casing Color Dimensions (H × W × D) in.
SiUS091601EA Model Specifications Indoor Unit Outdoor Unit FDMQ24RVJU RXL24UMVJU Cooling Power Supply Cooling Capacity (Min. ~ Max.) 4 Heating Capacity 3, 4 Heating 1 , 60 Hz, 208 - 230 V kW Btu/h kcal/h kW Btu/h kcal/h COP (Min. ~ Max.) EER (Min. ~ Max.) SEER / HSPF Indoor Unit Casing Color Dimensions (H × W × D) in.
SiUS091601EA Part 3 Printed Circuit Board Connector Wiring Diagram 1. Indoor Unit.................................................................................................22 1.1 1.2 1.3 1.4 1.5 FTX09/12NMVJU ....................................................................................... 22 FTX15NMVJU ............................................................................................ 24 FTX18/24UVJU ....................................................................................
SiUS091601EA Indoor Unit 1. Indoor Unit 1.1 FTX09/12NMVJU Control PCB (PCB1) 1) 2) 3) 4) 5) 6) 7) 8) S6 S26 S32 S200 S403 H1, H2, H3, FG FU1 V2 Connector for swing motor (horizontal blade) Connector for display/signal receiver PCB (PCB2) Connector for indoor heat exchanger thermistor (R2T) Connector for DC fan motor Connector for adaptor PCB (option) Connector for terminal strip Fuse (3.
Indoor Unit SiUS091601EA Display/Signal Receiver PCB (PCB2) 1) 2) S27 SW1 (S1W) 3) 4) 5) LED1 (H1P) LED2 (H2P) RTH1 (R1T) Connector for control PCB (PCB1) Indoor unit ON/OFF switch (Forced cooling operation ON/OFF switch) Refer to page 199 for details of forced cooling operation. LED for operation (green) LED for timer (yellow) Room temperature thermistor S27 SW1 LED2 LED1 # LED3 is not mounted.
SiUS091601EA 1.
Indoor Unit SiUS091601EA Filter PCB (PCB1) 1) 2) 3) 4) 5) S100 S800 FG, HE FU1 V2 Connector for terminal strip Connector for control PCB (PCB2) Connector for ground Fuse (3.15 A, 250 V) Varistor S800 V2 HE S100 FU1 FG Display/Signal Receiver PCB (PCB3) 1) 2) S27 SW1 (S1W) 3) 4) 5) LED1 (H1P) LED2 (H2P) RTH1 (R1T) 3P380932-1 Connector for control PCB (PCB2) Indoor unit ON/OFF switch (Forced cooling operation ON/OFF switch) Refer to page 199 for details of forced cooling operation.
SiUS091601EA 1.
Indoor Unit SiUS091601EA Signal Receiver PCB (PCB2) 1) S48 Connector for control PCB (PCB1) S48 3P224121-1 Display PCB (PCB3) 1) 2) S49 SW1 3) 4) 5) 6) LED1 (H1P) LED2 (H2P) LED3 (H3P) RTH1 (R1T) Connector for control PCB (PCB1) Indoor unit ON/OFF switch (Forced cooling operation ON/OFF switch) Refer to page 199 for details of forced cooling operation.
SiUS091601EA 1.
Indoor Unit SiUS091601EA Sensor PCB (PCB1) 1) 2) S49 RTH2 (R1T) Connector for control PCB (PCB2) Room temperature thermistor RTH2 S49 3P191450-1 Service PCB (PCB3) 1) 2) S27 SW2 (S2W)-4 3) SW4 (S4W) Connector for control PCB (PCB2) Switch for upward airflow limit setting Refer to page 209 for details. Keep the other switches as factory setting. Switch for airflow selection Refer to page 46 for details.
SiUS091601EA 1.
Indoor Unit Indoor Fan PCB (A2P) SiUS091601EA 1) 2) 3) 4) 5) 6) 7) X3A X6A X8A X10A F2U F4U HAP Connector for control PCB (A1P) Connector for reactor Connector for DC fan motor Connector for terminal block (for power supply) Fuse (5 A, 250 V) Fuse (6.
SiUS091601EA Wireless Remote Controller Receiver 2. Wireless Remote Controller Receiver 2.1 BRC082A43 Wired Remote Controller PCB 1) SS1 2) SS2 3) P1, P2 MAIN/SUB setting switch Refer to page 214 for details. Address setting switch Refer to page 214 for details.
Wired Remote Controller SiUS091601EA 3. Wired Remote Controller 3.
SiUS091601EA Outdoor Unit 4. Outdoor Unit 4.
Outdoor Unit SiUS091601EA HL1, HN1, S S80 S71 V150 FU3 V2 V3 E1, E2 S20 FU1 LED A S90 HR1 J6 FU2 HR2 S30 Caution 35 S40 2P415459-42 Replace the PCB if you cut a jumper unintentionally. Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of them.
SiUS091601EA 4.2 Outdoor Unit RXL12QMVJU(9) Main PCB 1) 2) 3) 4) 5) S20 S40 S70 S80 S90 6) 7) 8) 9) 10) 11) HL1, HN1, S E1, E2 U, V, W FU1, FU2 FU3 J6 12) 13) LED A V2, V3, V150 Connector for electronic expansion valve coil Connector for overload protector Connector for DC fan motor Connector for four way valve coil Connector for thermistors (outdoor temperature, outdoor heat exchanger, discharge pipe) Connector for terminal block Terminal for ground wire Connector for compressor Fuse (3.
Outdoor Unit SiUS091601EA HL1, HN1, S V2 FU3 J6 V3 S80 FU1 S20 E1, E2 S90 LED A V150 S40 S70 FU2 U, V, W 2P381219-4 2P575834-12 Caution 37 Replace the PCB if you cut a jumper unintentionally. Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of them.
SiUS091601EA 4.3 Outdoor Unit RXL15QMVJU Main PCB 1) 2) 3) 4) 5) S20 S40 S70 S80 S90 6) 7) 8) 9) 10) 11) HL1, HN1, S E1, E2 U, V, W FU1, FU2 FU3 J6 12) 13) LED A V1, V2, V3 Connector for electronic expansion valve coil Connector for overload protector Connector for DC fan motor Connector for four way valve coil Connector for thermistors (outdoor temperature, outdoor heat exchanger, discharge pipe) Connector for terminal block Terminal for ground wire Connector for compressor Fuse (3.
Outdoor Unit 4.
SiUS091601EA Outdoor Unit E1, E2 HN1 HL1 CK1 V401 FU1 V3 V2 FU3 S S20 S201 U, V, W S80 FU2 S70 S40 S202 Part 3 Printed Circuit Board Connector Wiring Diagram S90 2P455785-14 40
Outdoor Unit Service Monitor PCB (PCB2) SiUS091601EA 1) 2) 3) S501, S502 LED A SW5-3 4) SW6-1 Connector for main PCB (PCB1) LED for service monitor (green) Switch for facility setting Refer to page 217 for details. Switch for drain pan heater Refer to page 218 for details. LED A SW5-3 SW6-1 S501 S502 3P346711-10 SW1 ~ SW4 and LED1 ~ LED5 do not work.
SiUS091601EA Optional Adaptor 5. Optional Adaptor 5.1 BRP072A43 Wireless LAN Adaptor Wireless LAN Adaptor PCB 1) CN1 Connector for [S21] or [S403] CN1 3P356259-2 Note Connectors Models FTX09/12/15NMVJU FTX18/24UVJU FVXS series 5.
SiUS091601EA Part 4 Functions and Control 1. Common Functions ...................................................................................44 1.1 Temperature Control .................................................................................. 44 1.2 Frequency Principle.................................................................................... 44 2. Functions for FTX, FVXS Series ...............................................................46 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.
SiUS091601EA Common Functions 1. Common Functions 1.1 Temperature Control Definitions of Temperatures The definitions of temperatures are classified as following.
Common Functions SiUS091601EA When the frequency increases, the rotation speed of the compressor increases resulting in an increase of refrigerant circulation. This leads to a larger amount of heat exchange per unit. When the frequency decreases, the rotation speed of the compressor decreases resulting in a decrease of refrigerant circulation. This leads to a smaller amount of heat exchange per unit.
SiUS091601EA Functions for FTX, FVXS Series 2. Functions for FTX, FVXS Series 2.1 Airflow Direction Control Power-Airflow (Dual) Flap(s) The large flap sends a large volume of air downward to the floor and provides an optimum control in cooling, dry and heating operation. Cooling/Dry During cooling or dry operation, the flap retracts into the indoor unit. Then, cool air can be blown far and distributed all over the room.
Functions for FTX, FVXS Series SiUS091601EA FVXS series ° 40 ° 90 ° 90 Upward airflow limit OFF 25° Flap (up and down) Cooling/Dry Heating 20° R4003396 ° 90 ° 90 Upward airflow limit ON 20° R4003397 R4003394 3-D Airflow R4003394 FTX18/24UVJU only Alternative repetition of vertical and horizontal swing motions enables uniform air-conditioning of the entire room. When the horizontal swing and vertical swing are both set to automatic operation, the airflow becomes 3-D airflow.
SiUS091601EA Functions for FTX, FVXS Series When setting the airflow selection switch to . The air conditioner automatically decides the appropriate blowing pattern depending on the operating mode/situation. Operating mode Situation When the operation is activated or when the room is not fully cooled. Blowing pattern Air is blown from the upper and lower air outlets in order to reach the set temperature quickly.
Functions for FTX, FVXS Series 2.2 SiUS091601EA COMFORT AIRFLOW Operation Applicable Models FTX09/12/15NMVJU FTX18/24UVJU Outline The horizontal blades (louvers) are controlled not to blow the air directly at the people in the room. Cooling 09/12 class Heating 0° 65° R4003675 15 class R4003676 10° 25° 65° 80° R4003682 18/24 class R4003683 10° 20° 75° R4003684 80° R4003679 The fan speed is controlled automatically within the following steps.
SiUS091601EA 2.3 Functions for FTX, FVXS Series Fan Speed Control for Indoor Unit Outline Phase control and fan speed control contains 9 steps: LLL, LL, SL, L, ML, M, MH, H, and HH. The airflow rate can be automatically controlled depending on the difference between the room thermistor temperature and the target temperature. Automatic Fan Speed Control In automatic fan speed operation, the step SL is not available.
Functions for FTX, FVXS Series 2.4 SiUS091601EA Program Dry Operation Outline Program dry operation removes humidity while preventing the room temperature from lowering. Since the microcomputer controls both the temperature and airflow rate, the temperature adjustment and FAN setting buttons are inoperable. Details The microcomputer automatically sets the temperature and airflow rate.
SiUS091601EA 2.5 Functions for FTX, FVXS Series Automatic Cooling/Heating Changeover Outline When the automatic operation is selected with the remote controller, the microcomputer automatically determines the operation mode as cooling or heating according to the room temperature and the set temperature at start-up. The unit automatically switches the operation mode to maintain the room temperature at the set temperature.
Functions for FTX, FVXS Series 2.6 SiUS091601EA Thermostat Control Outline Thermostat control is based on the difference between the room thermistor temperature and the target temperature. Details Thermostat OFF Condition The temperature difference is in the zone A. Thermostat ON Conditions The temperature difference returns to the zone C after being in the zone A. The system resumes from defrost control in any zones except A. The operation turns on in any zones except A.
SiUS091601EA 2.7 Functions for FTX, FVXS Series NIGHT SET Mode Outline When the OFF TIMER is set, NIGHT SET mode is automatically activated. NIGHT SET mode keeps the airflow rate setting. Details NIGHT SET mode continues operation at the target temperature for the first one hour, then automatically raises the target temperature slightly in the case of cooling, or lowers the target temperature slightly in the case of heating.
Functions for FTX, FVXS Series 2.8 SiUS091601EA ECONO Operation Outline ECONO operation reduces the maximum operating current and the power consumption. This operation is particularly convenient for energy-saving. It is also a major bonus when breaker capacity does not allow the use of multiple electrical devices and air conditioners. It can be easily activated by pressing ECONO or Econo/Quiet button on the wireless remote controller.
SiUS091601EA 2.9 Functions for FTX, FVXS Series INTELLIGENT EYE Operation Applicable Models FTX18/24UVJU Outline The microcomputer detects the presence of humans in the room with a motion sensor and reduces the capacity when there is nobody in the room in order to save electricity. Details 1. INTELLIGENT EYE detection method Sampling (20 msec.) Motion sensor output 1 sec. High Low Human motion (Condition of 10 times or more output) If the motion sensor detects the outputs 10 times/sec.
Functions for FTX, FVXS Series Note(s) SiUS091601EA For dry operation, the temperature cannot be set with a remote controller, but the target temperature is shifted internally. 2.10 POWERFUL Operation Outline In order to exploit the cooling and heating capacity to full extent, the air conditioner can be operated by increasing the indoor fan rotating speed and the compressor frequency.
SiUS091601EA Functions for FTX, FVXS Series 2.11 Clock Setting ARC466 Series The clock can be set by taking the following steps: 1. Press Clock button. is displayed, then MON and blink. 2. Press Select or Select button to set the clock to the current day of the week. 3. Press Clock button. blinks. 4. Press Select or Select button to set the clock to the present time. Holding down Select or Select button rapidly increases or decreases the time display. 5.
Functions for FTX, FVXS Series SiUS091601EA 2.12 WEEKLY TIMER Operation Applicable Models FTX18/24UVJU FVXS09/12/15NVJU Outline Up to 4 timer settings can be saved for each day of the week (up to 28 settings in total). The 3 items: ON/OFF, temperature, and time can be set. Details The illustrations are for FVXS series as representative. Setting example of the WEEKLY TIMER The same timer settings are used from Monday through Friday, while different timer settings are used for the weekend.
SiUS091601EA Functions for FTX, FVXS Series To use WEEKLY TIMER operation Setting mode • Make sure the day of the week and time are set. If not, set the day of the week and time. program 1 program 2 ON OFF ON 8:30 17:30 [Monday] program 3 77°F (25°C) 6:00 program 4 OFF 81°F (27°C) 22:00 Setting Displays Day and number 1. Press ON/OFF Time Temperature . • The day of the week and the reservation number of the current day will be displayed. • 1 to 4 settings can be made per day. 2.
Functions for FTX, FVXS Series SiUS091601EA 6. Press to select the desired time. • The time can be set between 0:00 and 23:50 in 10-minute intervals. • To return to the ON/OFF TIMER mode setting, press . • Proceed to STEP 9 when setting the OFF TIMER. 7. Press . • The time will be set. •“ ” and the temperature blink. 8. Press to select the desired temperature. • The temperature can be set between 50˚F (10˚C) and 90˚F (32˚C).
SiUS091601EA Functions for FTX, FVXS Series Copy mode • A reservation made once can be copied to another day of the week. The whole reservation of the selected day of the week will be copied. program 1 program 2 program 3 ON [Monday] OFF 77°F (25°C) 6:00 program 4 ON OFF 81°F (27°C) 8:30 17:30 22:00 COPY program 1 [Tuesday] to [Friday] program 2 program 3 ON OFF ON 8:30 17:30 77°F (25°C) 6:00 program 4 OFF 81°F (27°C) 22:00 Setting Displays Confirmation Copy Paste Normal 1.
Functions for FTX, FVXS Series SiUS091601EA Confirming a reservation • The reservation can be confirmed. Setting Displays Normal Confirmation 1. Press . • The day of the week and the reservation number of the current day will be displayed. 2. Press to select the day of the week and the reservation number to be confirmed. • Pressing displays the reservation details. • To change the confirmed reserved settings, select the reservation number and press . The mode is switched to setting mode.
SiUS091601EA Functions for FTX, FVXS Series To delete reservations An individual reservation 1. Press . • The day of the week and the reservation number will be displayed. 2. Press to select the day of the week and the reservation number to be deleted. 3. Press •“ . ” and “ 4. Press • Pressing ” or “ ” blink. until no icon is displayed. changes the ON/OFF TIMER mode in sequence. • Selecting “blank” will cancel any reservation you may have. blank ON TIMER OFF TIMER 5.
Functions for FTX, FVXS Series SiUS091601EA 2.13 Other Functions 2.13.1 Hot-Start Function In order to prevent the cold air blast that normally occurs when heating operation is started, the temperature of the indoor heat exchanger is detected, and the airflow is either stopped or significantly weakened resulting in comfortable heating. Note(s) The cold air blast is prevented using similar control when defrost control starts or when the thermostat is turned ON. 2.13.
SiUS091601EA Functions for FDMQ Series 3. Functions for FDMQ Series 3.1 Fan Speed Control for Indoor Unit With Wired Remote Controller (BRC1E73) To change the fan speed, press Fan Speed button and select the fan speed from Low/Medium/High/Auto. Auto cannot be selected if the indoor unit does not have Auto Fan speed function. The system may change the fan speed automatically for equipment protection purposes. The system may turn off the fan when the room temperature is satisfied.
Functions for FDMQ Series 3.2 SiUS091601EA Program Dry Operation Outline Program dry operation removes humidity while preventing the room temperature from lowering. Since the microcomputer controls both the temperature and airflow rate, the temperature adjustment and FAN setting buttons are inoperable. Details The microcomputer automatically sets the temperature and airflow rate. The difference between the room thermistor temperature at start-up and the target temperature is divided into two zones.
SiUS091601EA 3.3 Functions for FDMQ Series Clock and Calender Setting (With BRC1E73) 1 Press Menu/OK button to display the main menu screen. Press buttons to select Clock & Calendar on the main menu screen. Press Menu/OK button to display the clock & calendar screen. 2 Press buttons to select Date & Time on the clock & calendar screen. Press Menu/OK button to display the date & time screen. 3 Select Year with buttons. Change the year with buttons.
Functions for FDMQ Series SiUS091601EA 6 Select Hour with buttons. Change the hour with buttons. Holding down the button causes the number to change continuously. 7 Select Minute with buttons. Change the minute with buttons. Holding down the button causes the number to change continuously. Press Menu/OK button. The confirmation screen will appear. Note: The date can be set between January 1, 2015 and December 31, 2099. 8 Press button to select Yes on the confirmation screen.
SiUS091601EA 3.4 Outline Functions for FDMQ Series Schedule Timer Operation (With BRC1E73) Day settings are selected from 4 patterns: 7 Days Weekday/Sat/Sun Weekday/Weekend Everyday Up to 5 actions can be set for each day. Details Set the startup time and operation stop time. ON: OFF: Startup time, cooling and heating temperature setpoints can be configured. Operation stop time, cooling and heating setback temperature setpoints can be configured.
Functions for FDMQ Series SiUS091601EA Daily Patterns 1 2 3 The schedule screen will appear. Press buttons to select Daily Patterns on the schedule screen. The daily patterns screen will appear when Menu/OK button is pressed. Press buttons to select 7 Days , Weekday/Sat/Sun , Weekday/Weekend or Everyday on the daily patterns screen. The confirmation screen will appear when Menu/OK button is pressed. Press buttons to select Yes on the confirmation screen.
SiUS091601EA Functions for FDMQ Series 4 Press buttons to move the highlighted item and press buttons to configure ON/OFF/-- settings. --, ON, or OFF changes in sequence when buttons are pressed. ON: The temperature setpoints can be configured. OFF: The setback temperature setpoints can be configured. – –: The temperature setpoints and setback temperature setpoints become disabled. The cooling and heating temperature setpoints for both ON and OFF (Setback) are configured.
Functions for FDMQ Series SiUS091601EA Enabling or disabling the schedule 1 Display the schedule screen. 2 Press buttons to select Enable or Disable on the enable/disable screen. Press Menu/OK button after selecting the item. The confirmation screen is displayed. 3 Press buttons to select Yes on the confirmation screen. Pressing Menu/OK button confirms the enable/disable setting for the schedule and takes you back to the basic screen.
SiUS091601EA Functions for FDMQ Series If Float Switch is OFF with Thermostat ON in Cooling Operation ∗2 ∗3 ∗1 ∗4 OFF Float switch ON 5 sec. 5 sec. Thermostat ON (running) OFF Error display A3 ON OFF Drain pump ON OFF 5 min. 5 sec. 5 min. 5 sec. 5 min. 5 sec. (R24610) When the float switch stays OFF for 5 sec., the thermostat turns OFF. After the thermostat turns OFF, the drain pump continues to operate for another 5 minutes. 1.
Functions for FDMQ Series SiUS091601EA If Float Switch Turns ON and OFF Continuously, or Float Switch Turns OFF While AF Displayed ∗1 OFF Float Switch Thermostat (running) ∗2 1st 4th 5th 5 sec. 5 sec. 5 sec. ON ON 5 sec. 5 sec. OFF AF ON Error Display ∗3 A3 OFF ON Drain Pump OFF 5 min. 5 min. 5 min. 5 min. 5 sec. 5 sec. 5 min. 5 min. 5 min. 5 sec. 5 min. 5 sec. 5 min. 5 min. 5 sec. 5 sec. (R24370) When the float switch stays OFF for 5 sec., the drain pump turns ON. 1.
SiUS091601EA 3.7 Functions for FDMQ Series Other Functions 3.7.1 Signal Receiving Sign When the indoor unit receives a signal from the remote controller, the unit emits a signal receiving sound. 3.7.2 Auto-restart Function If a power failure (even a momentary one) occurs during the operation, the system restarts automatically in the same conditions as before when the power supply is restored to the conditions prior to the power failure.
Thermistor Functions SiUS091601EA 4. Thermistor Functions (3) Outdoor Temperature Thermistor Expansion valve (5) Room Temperature Thermistor (2) Outdoor Heat Exchanger Thermistor Four way valve (1) Discharge Pipe Thermistor (1) Discharge Pipe Thermistor (4) Indoor Heat Exchanger Thermistor Compressor (R23851) The discharge pipe thermistor is used for controlling discharge pipe temperature.
SiUS091601EA Control Specification 5. Control Specification 5.1 Outline Mode Hierarchy The air conditioner control has normal operation mode, forced operation mode, and power transistor test mode for installation and servicing.
Control Specification SiUS091601EA (3) Indoor frequency command 2. Determine upper limit frequency The minimum value is set as an upper limit frequency among the frequency upper limits of the following functions: Compressor protection, input current, discharge pipe temperature, heating peak-cut, freeze-up protection, defrost control. 3.
SiUS091601EA 5.3 Control Specification Controls at Mode Changing/Start-up 5.3.1 Preheating Control Outline The inverter operation in open phase starts with the conditions of the outdoor temperature, the discharge pipe temperature, the radiation fin temperature and the preheating command from the indoor unit. Details 09/15 class Outdoor temperature ≥ –2.5°C (27.5°F) Control A (preheating for normal state) Outdoor temperature < –2.5°C (27.
Control Specification SiUS091601EA 5.3.3 Four Way Valve Operation Compensation Outline At the beginning of operation as the four way valve is switched, the pressure difference to activate the four way valve is acquired when the output frequency is higher than a certain fixed frequency, for a certain fixed time. Details Starting Conditions 1. When the compressor starts and the four way valve switches from OFF to ON 2. When the four way valve switches from ON to OFF during operation 3.
SiUS091601EA 5.4 Outline Control Specification Discharge Pipe Temperature Control The discharge pipe temperature is used as the internal temperature of the compressor. If the discharge pipe temperature rises above a certain level, the upper limit of frequency is set to keep the discharge pipe temperature from rising further.
Control Specification 5.5 Outline SiUS091601EA Input Current Control The microcomputer calculates the input current while the compressor is running, and sets the frequency upper limit based on the input current. In case of heat pump models, this control is the upper limit control of the frequency and takes priority over the lower limit control of four way valve operation compensation.
SiUS091601EA 5.6 Control Specification Freeze-up Protection Control Outline During cooling operation, the signal sent from the indoor unit determines the frequency upper limit and prevents freezing of the indoor heat exchanger. The signals from the indoor unit are divided into zones. Details The operating frequency limitation is judged with the indoor heat exchanger temperature. (Reference) Indoor heat exchanger temperature (R2T) 13°C (55.4°F) 7°C (44.6°F) 5°C (41.0°F) 3°C (37.4°F) 0°C (32.
Control Specification 5.8 SiUS091601EA Outdoor Fan Control 1. Fan ON control to cool down the electrical box The outdoor fan is turned ON when the electrical box temperature is high while the compressor is OFF. 2. Fan OFF control during defrosting The outdoor fan is turned OFF while defrosting. 3. Fan OFF delay when stopped The outdoor fan is turned OFF 60 ~ 70 seconds after the compressor stops. 4.
SiUS091601EA Control Specification 5.10 Defrost Control Outline Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor heat exchanger temperature must be more than a certain value to finish defrosting. Details Conditions for Starting Defrost The starting conditions are determined with the outdoor temperature and the outdoor heat exchanger temperature. The system is in heating operation. The compressor operates for 6 minutes.
Control Specification SiUS091601EA 5.11 Electronic Expansion Valve Control Outline The following items are included in the electronic expansion valve control. Electronic expansion valve is fully closed 1. Electronic expansion valve is fully closed when turning on the power. 2. Pressure equalizing control Open Control 1. Electronic expansion valve control when starting operation 2. Electronic expansion valve control when the frequency changes 3. Electronic expansion valve control for defrosting 4.
SiUS091601EA Control Specification 5.11.1 Initialization as Power Supply On The electronic expansion valve is initialized (fully closed) when the power is turned on. Then, the valve opening position is set and the pressure is equalized. 5.11.2 Pressure Equalizing Control When the compressor is stopped, the pressure equalizing control is activated. The electronic expansion valve opens, and develops the pressure equalization. 5.11.
Control Specification SiUS091601EA 5.11.7 Discharge Pipe Thermistor Disconnection Control Outline The disconnection of the discharge pipe thermistor is detected by comparing the discharge pipe temperature with the condensation temperature. If the discharge pipe thermistor is disconnected, the electronic expansion valve opens according to the outdoor temperature and the operation frequency, operates for a specified time, and then stops.
SiUS091601EA Control Specification 5.11.8 Target Discharge Pipe Temperature Control The target discharge pipe temperature is obtained from the indoor and outdoor heat exchanger temperature, and the electronic expansion valve opening is adjusted so that the actual discharge pipe temperature becomes close to the target discharge pipe temperature. (Indirect SH (superheating) control using the discharge pipe temperature) The target discharge pipe temperature is set as to become the target SH.
SiUS091601EA Part 5 Remote Controller 1. 2. 3. 4. 5. 6. 91 Applicable Remote Controller ...................................................................92 ARC466A21 ..............................................................................................93 ARC466A37 ..............................................................................................95 ARC480A8 ................................................................................................97 BRC082A43 ...................
SiUS091601EA Applicable Remote Controller 1. Applicable Remote Controller Series FTX-N/U FVXS-N FDMQ-R Note Model Name FTX09NMVJU FTX12NMVJU FTX15NMVJU FTX18UVJU FTX24UVJU FVXS09NVJU FVXS12NVJU FVXS15NVJU FDMQ12RVJU FDMQ18RVJU FDMQ24RVJU Wireless Remote Controller Reference Page ARC480A8 97 Wired Remote Controller Reference Page BRC944B2 (option) — ARC466A37 95 ARC466A21 93 — — BRC082A43 98 BRC1E73 100 Refer to the operation manual of applicable model for details.
ARC466A21 SiUS091601EA 2. ARC466A21 Signal transmitter Display (LCD) • Displays the current settings. (In this illustration, each section is shown with all its displays on for the purpose of explanation.) Receiver Temperature adjustment buttons • To use the remote controller, aim the transmitter at the indoor unit. If there is anything blocking the signals between the unit and the remote controller, such as a curtain, the unit may not operate. • The maximum transmission distance is about 23 ft (7 m).
SiUS091601EA ARC466A21 Open the Front Cover Mode button • Selects the operation mode. AUTO DRY COOL HEAT FAN ECONO2 button • Starts ECONO operation. Quiet button Swing3 button • Starts OUTDOOR UNIT QUIET operation. • OUTDOOR UNIT QUIET operation is not available in FAN and DRY operation. • OUTDOOR UNIT QUIET operation and POWERFUL operation cannot be used at the same time. Priority is given to the function you pressed last. • Adjusts the airflow direction.
ARC466A37 SiUS091601EA 3. ARC466A37 Signal transmitter Display (LCD) • Displays the current settings. (In this illustration, each section is shown with all its displays on for the purpose of explanation.) Receiver Temperature adjustment buttons • To use the remote controller, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote controller, such as a curtain, the unit will not operate. • The maximum distance for communication is about 23 ft (7m).
SiUS091601EA ARC466A37 Open the Front Cover Mode button • Selects the operation mode. AUTO DRY COOL HEAT FAN Econo4/Quiet button • Every time you press Econo/Quiet button, the setting changes in the following order. Comfort/Sensor button (COMFORT AIRFLOW Operation2 /INTELLIGENT EYE Operation3 ) ECONO • Every time you press Comfort/Sensor button, the setting changes in the following order.
ARC480A8 SiUS091601EA 4. ARC480A8 Display (LCD) Signal transmitter • Displays the current settings. (In this illustration, each section is shown with all its displays on for the purpose of explanation.) OFF button Receiver • Press this button to stop the operation. • To use the remote controller, aim the transmitter at the indoor unit. If there is anything blocking the signals between the unit and the remote controller, such as a curtain, the unit may not operate.
SiUS091601EA BRC082A43 5. BRC082A43 1 ON OFF 3 ON OFF 7 TEMP H M L DOWN 9 H M F L TIME UP UP 5 10 F FAN DOWN FAN 4 8 hr. 2 12 RESERVE CANCEL hr. hr. TIMER 11 MODE 13 hr.
BRC082A43 1 2 SiUS091601EA DISPLAY “ ” “ I ” (SIGNAL TRANSMISSION) This lights up when a signal is being transmitted. 11 DISPLAY “ ”“ ”“ (OPERATION MODE) 12 ”“ ”“ ” OPERATION MODE SELECTOR BUTTON Press this button to select OPERATION MODE. 14 FILTER SIGN RESET BUTTON Refer to the section of MAINTENANCE in the operation manual attached to the indoor unit. 15 INSPECTION/TEST OPERATION BUTTON This button is pressed for inspection or test operation. Do not use for normal operation.
SiUS091601EA BRC1E73 6. BRC1E73 1. Operation mode selector button 11. LCD (with backlight) 4. Up button 5. Down button 6. Right button 7. Left button 9. Operation lamp 8. On/Off button 3. Menu/OK button 10. Cancel button 2.
BRC1E73 SiUS091601EA 1. Operation mode selector button • Press this button to select the operation mode of your preference. * Available modes vary with the indoor unit model. 2. Fan speed control button • Press this button to select the fan speed of your preference. * Available fan speeds vary with the indoor unit model. 3. Menu/OK button • Used to enter the main menu. • Used to enter the selected item. 4. Up button • Used to raise the setpoint.
SiUS091601EA BRC1E73 Liquid Crystal Display • Three types of display mode (Standard, Detailed and Simple) are available. • Standard display is set by default. • Detailed and Simple displays can be selected in the main menu. Standard display 10.Changeover controlled by the master indoor unit 9.Under centralized control 11.Setback 8.( ) Scheduled 7.( 1.Operation mode ) Key Lock 3.Setpoint 2.Fan Speed 6.Ventilation 4.Stand by for Defrost/ Hot start 5.
BRC1E73 SiUS091601EA Simple display 1.Operation mode 14.Selectable Display Item 3.Setpoint 11.Setback 2.Fan speed 4.Stand by for Defrost/ Hot start Note for all display modes • Depending on the field settings, while the indoor unit is stopped, OFF may be displayed instead of the operation mode and/or the setpoint may not be displayed.
SiUS091601EA BRC1E73 “Error: Push Menu button” “Warning: Push Menu button” • Displayed if an error or warning is detected. 1. Operation mode • Used to display the current operation mode: Cool, Heat, Vent, Fan, Dry or Auto. • In Auto mode, the actual operation mode (Cool or Heat) will be also displayed. • Operation mode cannot be changed when OFF is displayed. Operation mode can be changed after starting operation.
BRC1E73 SiUS091601EA 11. Setback “ ” • The setback icon flashes when the unit is turned on by the setback control. 12. Airflow Direction “ ” • Displayed when the airflow direction and swing are set. • If the connected indoor unit model does not include oscillating louvers this item will not be displayed. 13. Current Day/Time (12/24 hour time display) • Displayed if the clock is set. • If the clock is not set, “ -- : -- ” will be displayed. • 12 hour time format is displayed by default.
SiUS091601EA Part 6 Service Diagnosis 1. General Problem Symptoms and Check Items .......................................108 2. Troubleshooting with LED .......................................................................109 2.1 Indoor Unit................................................................................................ 109 2.2 Outdoor Unit ............................................................................................. 110 3. Service Diagnosis ..............................
SiUS091601EA 7.7 Discharge Pipe Temperature Control....................................................... 163 7.8 High Pressure Control in Cooling ............................................................. 165 7.9 System Shutdown due to Temperature Abnormality in the Compressor ................................................................................................................. 167 7.10 Compressor Sensor System Abnormality ................................................ 168 7.
SiUS091601EA General Problem Symptoms and Check Items 1. General Problem Symptoms and Check Items Check Item The unit does not operate. Check the power supply. Check if the rated voltage is supplied. — Check the type of the indoor unit. Check if the indoor unit type is compatible with the outdoor unit. — Check the outdoor temperature. Heating/cooling operations are not available when the outdoor temperature is out of the operation limit. Check the reference page for the operation limit.
Troubleshooting with LED SiUS091601EA 2. Troubleshooting with LED 2.1 Indoor Unit Operation Lamp The operation lamp blinks when any of the following errors is detected. A protection device of the indoor or outdoor unit is activated, or when the thermistor malfunctions. A signal transmission error occurs between the indoor and outdoor units. In either case, conduct the diagnostic procedure described in the following pages.
SiUS091601EA Troubleshooting with LED FDMQ series with BRC082A43 For wireless remote controller, a receiver is installed. When the error occurs, the operation lamp on the receiver blinks. Operation lamp (red) R4003517 2.2 Outdoor Unit The outdoor unit has one green LED (LED A) on the PCB. When the microcomputer works in order, the LED A blinks. However, the LED A turns OFF while the standby electricity saving function is activated and the power supply is OFF.
Service Diagnosis SiUS091601EA 3. Service Diagnosis 3.1 ARC480 Series 3.1.1 Method 1 1. When TIMER CANCEL button is held down for 5 seconds, 00 is displayed on the temperature display screen. 2. Press TIMER CANCEL button repeatedly until a long beep sounds. TIMER CANCEL button R6000690 Note(s) 1. A short beep or two consecutive beeps indicate non-corresponding codes. 2. To return to the normal mode, hold TIMER CANCEL button down for 5 seconds.
SiUS091601EA Service Diagnosis 3.1.2 Method 2 1. Press the center of TEMP button and OFF button at the same time. R6000668 5C is displayed on the LCD. 2. Select 5C (service check) with TEMP or TEMP button. 3. Press FAN button to enter the service check mode. 00 is displayed and the left-side number blinks. 4. Press TEMP or TEMP beeps or the long beep. R6000695 R6000669 R6000696 button and change the number until you hear the two consecutive R6000670 5. Diagnose by the sound.
Service Diagnosis SiUS091601EA Long beep: Both the left-side and right-side numbers correspond with the error code. The numbers indicated when you hear the long beep are the error code. Refer to page 123. 6. Press FAN button. R6000669 The right-side number blinks. 7. Press TEMP or TEMP button and change the number until you hear the long beep. R6000697 R6000670 8. Diagnose by the sound. Beep: The left-side number does not correspond with the error code.
SiUS091601EA 3.2 Service Diagnosis ARC466 Series 3.2.1 Method 1 1. When Timer Cancel button is held down for 5 seconds, 00 is displayed on the temperature display screen. 2. Press Timer Cancel button repeatedly until a long beep sounds. Timer Cancel button (R24045) < ARC466 Series > Note(s) 1. A short beep or two consecutive beeps indicate non-corresponding codes. 2. To return to the normal mode, hold Timer Cancel button down for 5 seconds.
Service Diagnosis SiUS091601EA 3.2.2 Method 2 1. Press the center of Temp button and Mode button at the same time. (R24046) 5C is displayed on the LCD. (R11821) 2. Select 5C (service check) with Temp or Temp button. 3. Press Mode button to enter the service check mode. (R24047) The left-side number blinks. (R11670) 4. Press Temp or Temp button and change the number until you hear the two consecutive beeps or the long beep. (R24048) 5. Diagnose by the sound.
SiUS091601EA Service Diagnosis Long beep: Both the left-side and right-side numbers correspond with the error code. The numbers indicated when you hear the long beep are the error code. Refer to page 123. 6. Press Mode button. (R24047) The right-side number blinks. (R11673) 7. Press Temp or Temp button and change the number until you hear the long beep. (R24048) 8. Diagnose by the sound. Beep: The left-side number does not correspond with the error code.
Service Diagnosis 3.3 SiUS091601EA BRC1E73 Relations Between Modes On power-up, the message “Checking the connection. Please standby.” will be displayed on the remote controller screen temporarily and then the basic screen will be displayed. To access a mode from the basic screen, refer to the figure below. When any of the operation buttons is pressed, the backlight will come on and remain lit for about 30 seconds. Be sure to press a button while the backlight is on.
SiUS091601EA Service Diagnosis Service Diagnosis The following message is displayed on the screen when an error (or a warning) occurs during operation. Check the error code and take the corrective action specified for the particular model. Screen Operation lamp Menu/OK button (R18817) Operation 1 Cool If an error occurs, either one of the following items will flash in the basic screen. Set to 74 Error : Push Menu button F Error: Push Menu button * The Operation lamp will flash.
Service Diagnosis 3.4 SiUS091601EA BRC082A43 Relations Between Modes The following modes can be selected by using INSPECTION/TEST OPERATION button on the remote controller. Indoor unit settings can be made. z Filter cleaning sign time Field z Others setting mode Press INSPECTION/TEST OPERATION button for more than 4 seconds. Service mode Press INSPECTION/TEST OPERATION button once. Press INSPECTION/TEST OPERATION button for more than 4 seconds. Service data can be obtained.
SiUS091601EA Service Diagnosis Step 2 Action Press UP or DOWN button and change the UNIT No. until the indoor unit starts to beep. UP button DOWN button (R15408) 3 If you hear... Then... 3 short beeps 1 short beep Follow all steps below. Follow steps 3 and 4. Continue the operation in step 4 until you hear a long beep. This long beep indicates that the error code is confirmed. 1 long beep There is no abnormality. Press OPERATION MODE SELECTOR button.
Service Diagnosis SiUS091601EA Step 4 Action Press UP or DOWN button to change the error code upper digit until the indoor unit beeps. DOWN 4 5 6 7 8 9 U P L J F H E C A 0 UP button DOWN button UP (R15411) 5 If you hear... 2 short beeps Then... The upper digit matches. 1 short beep 1 long beep No digits match. Both upper and lower digits match. Press OPERATION MODE SELECTOR button. The right 0 (lower digit) indication of the error code blinks.
SiUS091601EA Service Diagnosis Step 6 Action Press UP or DOWN button and change the error code lower digit until the indoor unit generates long beep. DOWN F E J C H A 9 8 7 6 5 4 3 2 1 0 UP button DOWN button UP (R15413) 7 If you hear... Then... 2 short beeps 1 long beep No digits match. Both upper and lower digits match. Press OPERATION MODE SELECTOR button to return to the normal mode. If you do not press any button for 1 minute, the remote controller automatically returns to the normal mode.
Error Codes and Description SiUS091601EA 4.
SiUS091601EA Troubleshooting for FTX, FVXS Series 5. Troubleshooting for FTX, FVXS Series 5.1 Indoor Unit PCB Abnormality Error Code A1 Method of Error Detection The system checks if the circuit works properly within the microcomputer of the indoor unit. Error Decision Conditions The system cannot set the internal settings.
Troubleshooting for FTX, FVXS Series Note Connectors FTX09/12NMVJU FTX18/24UVJU FVXS series FTX15NMVJU 125 SiUS091601EA Terminal ~ Control PCB (H1, H2, H3) Terminal ~ Filter PCB (S100) Filter PCB (S800) ~ Control PCB (S900) Part 6 Service Diagnosis
SiUS091601EA 5.2 Troubleshooting for FTX, FVXS Series Freeze-up Protection Control/Heating Peak-cut Control Error Code A5 Method of Error Detection Freeze-up protection control During cooling operation, the freeze-up protection control (operation halt) is activated according to the temperature detected by the indoor heat exchanger thermistor.
Troubleshooting for FTX, FVXS Series Reference 127 SiUS091601EA Check No.01 Refer to P.
SiUS091601EA 5.3 Troubleshooting for FTX, FVXS Series Indoor Fan Motor (DC Motor) or Related Abnormality Error Code A6 Method of Error Detection The rotation speed detected by the Hall IC during indoor fan motor operation determines abnormal fan motor operation. Error Decision Conditions The detected rotation speed does not reach the demanded rotation speed of the target tap, and is less than 50% of the maximum fan motor rotation speed.
Troubleshooting for FTX, FVXS Series SiUS091601EA A Continued from the previous page Fan rotates smoothly? NO Abnormal sound occurs? YES Check No. 03 Check the fan motor for breakdown or short circuit. NO YES Is the rubber cushion properly fitted? YES Replace the bearing rubber cushion. NO Correct the position of rubber cushion or replace the rubber cushion. Replace the indoor fan motor. NO Resistance OK? YES Turn the power on again. Check No. 03 Check the motor control voltage.
SiUS091601EA Troubleshooting Troubleshooting for FTX, FVXS Series FTX18/24UVJU, FVXS Series Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check the power supply voltage. Is the voltage fluctuation within ±10% from the rated value? NO Correct the power supply. YES Turn off the power and rotate the fan by hand. Does the fan rotate smoothly? NO Replace the indoor fan motor. YES Turn on the power and start operation.
Troubleshooting for FTX, FVXS Series Note(s) Reference 131 SiUS091601EA The rotation pulse is the feedback signal from the indoor fan motor. Check No.02 Refer to P.
SiUS091601EA 5.4 Troubleshooting for FTX, FVXS Series Thermistor or Related Abnormality Error Code C4, C9 Method of Error Detection The temperatures detected by the thermistors determine thermistor errors. Error Decision Conditions The voltage between the both ends of the thermistor is either 4.96 V or more, or 0.04 V or less with the power on.
Troubleshooting for FTX, FVXS Series 5.5 SiUS091601EA Low-voltage Detection or Over-voltage Detection Error Code U2 Method of Error Detection Low-voltage detection: An abnormal voltage drop is detected by the DC voltage detection circuit. Over-voltage detection: An abnormal voltage rise is detected by the over-voltage detection circuit. Error Decision Conditions Low-voltage detection: The voltage detected by the DC voltage detection circuit is below 150 ~ 200 V (depending on the model).
SiUS091601EA Troubleshooting for FTX, FVXS Series Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check the power supply voltage. Is the voltage fluctuation within ±10% from the rated value? NO Correct the power supply. YES Check the connection of the compressor harness. Loose or disconnected? YES Reconnect the harness.
Troubleshooting for FTX, FVXS Series 5.6 SiUS091601EA Signal Transmission Error (Between Indoor Unit and Outdoor Unit) Error Code U4 Method of Error Detection The signal transmission data received from the outdoor unit is checked whether it is normal. Error Decision Conditions The data sent from the outdoor unit cannot be received normally, or the content of the data is abnormal.
SiUS091601EA Troubleshooting for FTX, FVXS Series Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check the power supply voltage. Is the voltage fluctuation within ±10% from the rated value? NO Correct the power supply. YES Check the indoor unit - outdoor unit connection wires. Is there any wiring error? YES Correct the indoor unit outdoor unit connection wires.
Troubleshooting for FTX, FVXS Series 5.7 SiUS091601EA Unspecified Voltage (Between Indoor Unit and Outdoor Unit) Error Code UA Method of Error Detection The supply power is detected for its requirements (pair type is different from multi type) by the indoor/outdoor transmission signal. Error Decision Conditions The pair type and multi type are interconnected.
SiUS091601EA Troubleshooting for FDMQ Series 6. Troubleshooting for FDMQ Series 6.1 Indoor Unit PCB Abnormality Error Code A1 Method of Error Detection The system checks the data from EEPROM. Error Decision Conditions When the data from the EEPROM is not received correctly EEPROM (Electrically Erasable Programmable Read Only Memory): A memory chip that holds its content without power.
Troubleshooting for FDMQ Series 6.2 SiUS091601EA Drain Level Control System Abnormality Error Code A3 Method of Error Detection The float switch detects error.
SiUS091601EA 6.3 Troubleshooting for FDMQ Series Indoor Fan Motor (DC Motor) or Related Abnormality Error Code A6 Method of Error Detection Detection from the current flow on the fan PCB Detection from the rotation speed of the fan motor in operation Error Decision Conditions The rotation speed is less than a certain level for 6 seconds.
Troubleshooting for FDMQ Series SiUS091601EA A Continued from the previous page Turn ON the power supply while the fan motor connector ( 1) is disconnected. The HAP lamp on the indoor unit control PCB is blinking while the HAP lamp on the fan PCB is not blinking. YES NO Turn OFF the power supply and wait for 10 minutes. Turn OFF the power supply and wait for 10 minutes. Check No.02 Check the fan motor connectors. Each resistance between the pins is equal to or lower than 1 :.
SiUS091601EA 6.4 Troubleshooting for FDMQ Series Indoor Fan PCB Abnormality Error Code A8 Method of Error Detection Microcomputer checks the voltage state of the fan PCB. Error Decision Conditions Overvoltage or voltage drop is detected on the fan PCB. Supposed Causes Defective fan PCB External factor such as noise Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.
Troubleshooting for FDMQ Series 6.5 SiUS091601EA Humidifier or Related Abnormality Error Code AF Method of Error Detection Water leakage from humidifier(s) is detected based on the float switch ON/OFF changeover while the system is not operating.
SiUS091601EA 6.6 Troubleshooting for FDMQ Series Thermistor or Related Abnormality Error Code C4, C5, C9 Method of Error Detection The temperatures detected by the thermistors determine thermistor errors. Error Decision Conditions The thermistor is disconnected or shorted while the unit is running. Supposed Causes Troubleshooting If the cause of the problem is related to the thermistors, the thermistors should be checked prior to changing the indoor unit PCB.
Troubleshooting for FDMQ Series 6.7 SiUS091601EA Remote Controller Thermistor Abnormality CJ Error Code Method of Error Detection Even if remote controller thermistor is faulty, system is possible to operate by system thermistor. Malfunction detection is carried out by the temperature detected by the remote controller thermistor. Error Decision Conditions The remote controller thermistor is disconnected or shorted while the unit is running.
SiUS091601EA 6.8 Troubleshooting for FDMQ Series Low-voltage Detection or Over-voltage Detection Error Code U2 Method of Error Detection Low-voltage detection: An abnormal voltage drop is detected by the DC voltage detection circuit. Over-voltage detection: An abnormal voltage rise is detected by the over-voltage detection circuit. Error Decision Conditions Low-voltage detection: The voltage detected by the DC voltage detection circuit is below 150 ~ 200 V (depending on the model).
Troubleshooting for FDMQ Series SiUS091601EA Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check the power supply voltage. Is the voltage fluctuation within ±10% from the rated value? NO Correct the power supply. YES Check the connection of the compressor harness. Loose or disconnected? YES Reconnect the harness.
SiUS091601EA 6.9 Troubleshooting for FDMQ Series Signal Transmission Error (Between Indoor and Outdoor Unit) Error Code U4 Method of Error Detection The signal transmission data from the outdoor unit is checked whether it is normal. Error Decision Conditions The data sent from the outdoor unit cannot be received normally, or the content of the data is abnormal.
Troubleshooting for FDMQ Series SiUS091601EA Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check the power supply voltage. Is the voltage fluctuation within ±10% from the rated value? NO Correct the power supply. YES Check the connection wires between the indoor unit and the outdoor unit. Is there any wiring error? YES Correct the connection wires between the indoor unit and the outdoor unit.
SiUS091601EA Troubleshooting for FDMQ Series 6.10 Signal Transmission Error (Between Indoor Unit and Remote Controller) Error Code U5 Method of Error Detection In case of controlling 1 indoor unit with 2 remote controllers, check the system using microcomputer if signal transmission between indoor unit and remote controller (main and sub) is normal. Error Decision Conditions Normal transmission does not continue for specified period.
Troubleshooting for FDMQ Series SiUS091601EA 6.11 Signal Transmission Error (Between MAIN/SUB Remote Controllers) Error Code U8 Method of Error Detection In case of controlling 1 indoor unit with 2 remote controllers, check the system using microcomputer if signal transmission between MAIN remote controller and SUB remote controller is normal. Error Decision Conditions Normal transmission does not continue for specified period.
SiUS091601EA Troubleshooting for FDMQ Series 6.
Troubleshooting for Outdoor Unit SiUS091601EA 7. Troubleshooting for Outdoor Unit 7.1 Outdoor Unit PCB Abnormality Error Code E1 Method of Error Detection The system checks if the microprocessor is working in order. The system checks if the zero-cross signal comes in properly. Error Decision Conditions The microprocessor program runs out of control. The zero-cross signal is not detected.
SiUS091601EA 7.2 Troubleshooting for Outdoor Unit OL Activation (Compressor Overload) Error Code E5 Method of Error Detection A compressor overload is detected through compressor OL. Error Decision Conditions If the error repeats, the system is shut down.
Troubleshooting for Outdoor Unit SiUS091601EA Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Discharge pipe thermistor disconnected? YES Insert the thermistor in position. NO Check No. 01 Check the discharge pipe thermistor. NG Replace the discharge pipe thermistor. OK Is the connector S40 properly connected? NO Connect the connector S40 properly. YES Disconnect the connector S40 from the PCB.
SiUS091601EA Reference Part 6 Service Diagnosis Troubleshooting for Outdoor Unit Check No.14 Refer to P.
Troubleshooting for Outdoor Unit 7.3 SiUS091601EA Compressor Lock Error Code E6 Method of Error Detection A compressor lock is detected by the current waveform generated when applying high-frequency voltage to the motor. Error Decision Conditions If the error repeats, the system is shut down.
SiUS091601EA 7.4 Troubleshooting for Outdoor Unit DC Fan Lock Error Code E7 Method of Error Detection An error is determined with the high-voltage fan motor rotation speed detected by the Hall IC. Error Decision Conditions The fan does not start in 15 ~ 30 seconds even when the fan motor is running. If the error repeats, the system is shut down.
Troubleshooting for Outdoor Unit 7.5 SiUS091601EA Input Overcurrent Detection Error Code E8 Method of Error Detection An input overcurrent is detected by checking the input current value with the compressor running. Error Decision Conditions The current exceeds about 12.0 ~ 20.0 A (depending on the model) for 2.5 seconds with the compressor running. The upper limit of the current decreases when the outdoor temperature exceeds a certain level.
SiUS091601EA Reference Part 6 Service Diagnosis Troubleshooting for Outdoor Unit Check No.18 Refer to P.
Troubleshooting for Outdoor Unit 7.6 SiUS091601EA Four Way Valve Abnormality Error Code EA Method of Error Detection The room temperature thermistor and the indoor heat exchanger thermistor are checked if they function within their normal ranges in each operation mode. Error Decision Conditions The following condition continues over C seconds after operating for 5 minutes.
SiUS091601EA Troubleshooting for Outdoor Unit Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Four way valve coil disconnected (loose)? YES Correct the four way valve coil. NO Harness disconnected? YES Reconnect the harness. NO Check the continuity of the four way valve coil and harness. Disconnect the harness from the connector.
Troubleshooting for Outdoor Unit 7.7 SiUS091601EA Discharge Pipe Temperature Control Error Code F3 Method of Error Detection An error is determined with the temperature detected by the discharge pipe thermistor. Error Decision Conditions If the temperature detected by the discharge pipe thermistor rises above A, the compressor stops. The error is cleared when the discharge pipe temperature has dropped below B. If the error repeats, the system is shut down.
SiUS091601EA Troubleshooting for Outdoor Unit Reference Check No.12 Refer to P.184 Reference Check No.14 Refer to P.
Troubleshooting for Outdoor Unit 7.8 SiUS091601EA High Pressure Control in Cooling Error Code F6 Method of Error Detection High-pressure control (operation halt, frequency drop, etc.) is activated in cooling operation if the temperature sensed by the outdoor heat exchanger thermistor exceeds the limit. Error Decision Conditions The temperature sensed by the outdoor heat exchanger thermistor rises above 60 ~ 62°C (140 ~ 143.6°F) (depending on the model).
SiUS091601EA Troubleshooting for Outdoor Unit Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check the installation space. Check No. 17 Check the installation condition. NG OK Check No. 19 Check the outdoor fan. NG OK Check No. 18 Check the discharge pressure. NG Change the installation location or direction. Clean the outdoor heat exchanger. Replace the outdoor fan motor.
Troubleshooting for Outdoor Unit 7.9 SiUS091601EA System Shutdown due to Temperature Abnormality in the Compressor Error Code F8 Method of Error Detection Operation is halted when the temperature detected by the discharge pipe thermistor exceeds the determined limit. Error Decision Conditions Temperature exceeds the detection threshold of 127.5°C (261.5°F) during forced cooling operation.
SiUS091601EA Troubleshooting for Outdoor Unit 7.10 Compressor Sensor System Abnormality Error Code H0 Method of Error Detection The system checks the DC current before the compressor starts. Error Decision Conditions The voltage converted from the DC current before compressor start-up is out of the range 0.5 ~ 4.5 V. The DC voltage before compressor start-up is below 50 V.
Troubleshooting for Outdoor Unit SiUS091601EA 7.11 Position Sensor Abnormality Error Code H6 Method of Error Detection A compressor start-up failure is detected by checking the compressor running condition through the position detection circuit. Error Decision Conditions If the error repeats, the system is shut down.
SiUS091601EA Troubleshooting for Outdoor Unit Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn off the power. Check the power supply voltage. Is the power supply voltage fluctuation within ±10% from the rated value? NO Correct the power supply. YES Check No. 18 Check the discharge pressure. OK? NO Replace the stop valve. YES Check No. 20 Check the short circuit of the diode bridge.
Troubleshooting for Outdoor Unit SiUS091601EA R6000565 171 Reference Check No.15 Refer to P.186 Reference Check No.18 Refer to P.190 Reference Check No.20 Refer to P.
SiUS091601EA Troubleshooting for Outdoor Unit 7.12 Thermistor or Related Abnormality (Outdoor Unit) Error Code H9, J3, J6, P4 Method of Error Detection This fault is identified based on the thermistor input voltage to the microcomputer. A thermistor fault is identified based on the temperature sensed by each thermistor. Error Decision Conditions The voltage between the both ends of the thermistor is either 4.96 V or more, or 0.04 V or less with the power on.
Troubleshooting for Outdoor Unit Troubleshooting SiUS091601EA In case of H9, J3, J6 Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn on the power again. Error displayed again on remote controller? NO Reconnect the connectors or thermistors. YES Check No. 01 Check the thermistor resistance value. Normal? J3 error: the discharge pipe temperature is lower than the heat exchanger temperature.
SiUS091601EA Troubleshooting for Outdoor Unit 7.13 Electrical Box Temperature Rise Error Code L3 Method of Error Detection An electrical box temperature rise is detected by checking the radiation fin thermistor with the compressor off. Error Decision Conditions With the compressor off, the radiation fin temperature is above A. The error is cleared when the radiation fin temperature drops below B.
Troubleshooting for Outdoor Unit Reference 175 SiUS091601EA Check No.19 Refer to P.
SiUS091601EA Troubleshooting for Outdoor Unit 7.14 Radiation Fin Temperature Rise Error Code L4 Method of Error Detection A radiation fin temperature rise is detected by checking the radiation fin thermistor with the compressor on. Error Decision Conditions If the radiation fin temperature with the compressor on is above A. The error is cleared when the radiation fin temperature drops below B. If the error repeats, the system is shut down.
Troubleshooting for Outdoor Unit SiUS091601EA Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn off the power. Then, turn on the power to restart the system. Error displayed again? YES NO Has the PCB been replaced? YES Check if silicone grease is applied properly on the radiation fin. If not, apply the silicone grease. NO Check the radiation fin temperature. NO Above A? Replace the outdoor unit PCB (main PCB).
SiUS091601EA Troubleshooting for Outdoor Unit 7.15 Output Overcurrent Detection Error Code L5 Method of Error Detection An output overcurrent is detected by checking the current that flows in the inverter DC section. Error Decision Conditions A position signal error occurs while the compressor is running. A rotation speed error occurs while the compressor is running. An output overcurrent signal is fed from the output overcurrent detection circuit to the microcomputer.
Troubleshooting for Outdoor Unit SiUS091601EA A Continued from the previous page Any LED off? YES Correct the power supply or replace the outdoor unit PCB (main PCB). NO Check No. 22 Check the power module. NO Normal? Replace the outdoor unit PCB (main PCB). YES Turn off the power, and reconnect the harnesses. Turn on the power again and start operation. Check the power supply voltage. Is the voltage fluctuation within ±10% from the rated value? NO Correct the power supply.
SiUS091601EA Troubleshooting for Outdoor Unit 7.16 Signal Transmission Error on Outdoor Unit PCB Error Code U7 Method of Error Detection Communication error between microcomputer mounted on the main PCB and PM1. Error Decision Conditions The abnormality is determined when the data sent from the PM1 cannot be received for 9 seconds. The error counter is reset when the data from the PM1 can be successfully received.
Check SiUS091601EA 8. Check 8.1 Thermistor Resistance Check Check No.01 Measure the resistance of each thermistor using multimeter. The resistance values are defined by below table. If the measured resistance value does not match the listed value, the thermistor must be replaced. Disconnect the connector of thermistor ASSY from the PCB to measure the resistance between the pins using multimeter.
SiUS091601EA 8.2 Check Indoor Fan Motor Connector Check Check No.03 FTX09/12/15NMVJU Fan motor wire breakdown/short circuit check (1) Check the connector for connection. (2) Turn the power off. (3) Check if each resistance at the phases U - V and V - W is within specified range in the table below. Motor control voltage check (1) Check the connector for connection. (2) Check the motor control voltage is generated (between the pins 2 - 3).
Check Check No.02 SiUS091601EA FTX18/24UVJU, FVXS Series 1. Check the connection of connector. 2. Check motor power supply voltage output (pins 4 - 7). 3. Check motor control voltage (pins 4 - 3). 4. Check rotation command voltage output (pins 4 - 2). 5. Check rotation pulse input (pins 4 - 1). S1 7 6 5 4 3 2 1 Motor power supply voltage (310 ~ 340 VDC) Unused Unused GND Motor control voltage (15 VDC) Rotation command voltage (1~ 6.5 VDC) Rotation pulse input R6000681 FDMQ Series 1.
SiUS091601EA 8.3 Check Power Supply Waveform Check Check No.11 Measure the power supply waveform between No. 1 and No. 2 on the terminal strip, and check the waveform disturbance. Check if the power supply waveform is a sine wave (Fig.1). Check if there is waveform disturbance near the zero-cross (sections circled in Fig.2). [Fig.1] [Fig.2] (R1444) (R1736) 8.4 Electronic Expansion Valve Check Check No.12 Conduct the following to check the electronic expansion valve (EV). 1.
Check 8.5 SiUS091601EA Four Way Valve Performance Check Check No.13 Turn off the power. Then, turn on the power to restart the system. Start heating operation. S80 voltage at 208 - 230 VAC with compressor on? (Fig. 1) ∗ Four way valve coil Cooling/Dry/Defrost: Not energized Heating: energized NO Replace the outdoor unit PCB (main PCB). YES Disconnect the four way valve coil from the connector and check the continuity.
SiUS091601EA 8.7 Check Inverter Analyzer Check Check No.15 Characteristics Inverter analyzer: RSUK0917C If an abnormal stop occurs due to compressor startup failure or overcurrent output when using an inverter unit, it is difficult to judge whether the stop is caused by the compressor failure or some other failure (main PCB, power module, etc.). The inverter analyzer makes it possible to judge the cause of trouble easily and securely.
Check SiUS091601EA FTX09/12/15NMVJU 1. Turn the power on. 2. Press the center of TEMP button and OFF button on the remote controller at the same time. 3. Select T with TEMP or TEMP button. 4. Press FAN button. 5. Press FAN ONLY button to start the power transistor test operation. OFF button (R23157) FTX18/24UVJU, FVXS series 1. Turn the power on. 2. Select FAN operation with the Mode button on the remote controller. 3. Press the center of the Temp button and the Mode button at the same time. 4.
SiUS091601EA Check FDMQ series with Wired Remote Controller (BRC1E73) 2. 1. Turn the power on. 3. 2. Set FAN operation using the remote controller. 3. Press and hold Cancel button for 4 seconds or longer. 4. Select Test Operation in the service settings menu, then press Menu/OK button. 4. Basic screen returns and “Test Operation” is displayed at the bottom. 5. Press On/Off button within 10 seconds. 3 minutes after pressing On/Off button, power transistor test operation will start. 5.
Check 8.8 SiUS091601EA Rotation Pulse Check on the Outdoor Unit PCB Check No.16 Make sure that the voltage is within 320 +- 100 50 VDC. 1. Set operation off and power off. Disconnect the connector S70 or S71. 2. Check that the voltage between the pins 4 - 7 is 320 VDC. 3. Check that the control voltage between the pins 4 - 3 is 15 VDC. 4. Check that the rotation command voltage between the pins 4 - 2 is 0 ~ 6.5 VDC. 5. Keep operation off and power off. Connect the connector S70 or S71. 6.
SiUS091601EA 8.9 Check Installation Condition Check Check No.17 Installation condition check Check the allowable dimensions of the air suction and discharge area. NG Change the installation location or direction. OK Is the discharged air short-circuited? YES Change the installation location or direction. NO Is the outdoor heat exchanger very dirty? YES Clean the outdoor heat exchanger.
Check SiUS091601EA 8.11 Outdoor Fan System Check Check No.19 DC motor Check the outdoor fan system. Is the outdoor fan running? NO YES Fan motor lead wire connector disconnected? NO Go to Check No. 16. YES Outdoor fan system is functioning. Reconnect the connector. (R21195) 8.12 Main Circuit Short Check Check No.
SiUS091601EA Check 12 class + – Multimeter (R23024) – + Multimeter – ~ ~ + 15 class 4 3 2 1 (R25105) Part 6 Service Diagnosis 192
Check SiUS091601EA – + Multimeter – ~ ~ + 18/24 class 4 3 2 1 (R24538) 193 Part 6 Service Diagnosis
SiUS091601EA Check 8.13 Power Module Check Check No.22 Check to make sure that the voltage between (+) and (–) of the power module is about 0 V before checking. Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the connector, press the protrusion on the connector. Follow the procedure below to measure resistance between the terminals of the power module and the terminals of the compressor with a multimeter.
Check SiUS091601EA 12 class Pin 24: + Pin 23: U Pin 22: V Pin 21: W Pin 20: – (R23025) 15 class W V U DC_P1: + DC_N1: – 195 (R20704) Part 6 Service Diagnosis
SiUS091601EA Check 18/24 class DC– DC+ U Part 6 Service Diagnosis V W (R24539) 196
SiUS091601EA Part 7 Trial Operation and Field Settings 1. 2. 3. 4. Pump Down Operation............................................................................198 Forced Cooling Operation .......................................................................199 Trial Operation ........................................................................................202 Field Settings for FTX, FVXS Series.......................................................206 4.1 Temperature Display Switch ...........
SiUS091601EA Pump Down Operation 1. Pump Down Operation Outline In order to protect the environment, be sure to conduct pump down operation when relocating or disposing of the unit. Details 1. 2. 3. 4. Remove the valve caps from the liquid stop valve and the gas stop valve. Carry out forced cooling operation. After 5 to10 minutes, close the liquid stop valve with a hexagonal wrench. After 2 to 3 minutes, close the gas stop valve and stop the forced cooling operation.
Forced Cooling Operation SiUS091601EA 2. Forced Cooling Operation Outline The forced cooling operation is allowed when both the following conditions are met. 1. The outdoor unit is not abnormal and not in the 3-minute standby mode. 2. The outdoor unit is not operating. Protection functions have priority over all other functions during forced cooling operation.
SiUS091601EA Forced Cooling Operation With remote controller FTX09/12/15NMVJU 1. Press center of TEMP button and OFF button at the same time. 2. Press Temp button, select "T", and press FAN button. 3. Press COOL button to turn on the system. Forced cooling operation will stop automatically after about 30 minutes. To stop the operation, press OFF button. R7000274 FTX18/24UVJU, FVXS Series 1. Press Mode button and select the COOL operation. 2. Press On/Off button to turn on the system. 3.
Forced Cooling Operation SiUS091601EA For FDMQ series FDMQ Series with Wired Remote Controller (BRC1E73) 1. Set to COOL operation using the remote controller. 1. 2. Press and hold Cancel button for 4 seconds 2. or longer. Service settings menu is displayed. 3. Select Test Operation in the service settings menu, and press Menu/OK button. Basic screen returns and “Test Operation” is displayed at the bottom. 3. 4. Press On/Off button within 10 seconds, and the forced cooling operation starts.
SiUS091601EA Trial Operation 3. Trial Operation Outline Carry out the trial operation in accordance with the operation manual to ensure that all functions and parts, such as flap movement, are working properly. Trial operation should be carried out in either cooling or heating operation. Procedure 1. Measure the power supply voltage and make sure that it falls within the specified range. 2.
Trial Operation SiUS091601EA 1. 2. 3. 4. 5. 6. ARC466 Series Press On/Off button to turn on the system. Press the center of Temp button and Mode button at the same time. Select T (trial operation) with Tempor Tempbutton. Press Mode button to start the trial operation. Press Mode button and select operation mode. Trial operation terminates in about 30 minutes and switches into normal mode. To quit trial operation, press On/Off button.
SiUS091601EA Trial Operation Wired Remote Controller (BRC1E73) 1. Set to COOL or HEAT operation using the remote controller. Basic screen 1. 2. 2. Press and hold Cancel button for 4 seconds or longer. Service settings menu is displayed. 3. Select Test Operation in the service settings menu, and press Menu/OK button. 3. Basic screen returns and “Test Operation” is displayed at the bottom. Cool Set to 68 F Press and hold Cancel button for 4 seconds or longer during backlight lit.
Trial Operation Test Items 205 SiUS091601EA Test items Indoor and outdoor units are installed securely. Is the outdoor unit fully installed? No refrigerant gas leaks. Refrigerant gas and liquid pipes and indoor drain hose extension are thermally insulated. Draining line is properly installed. Does the power supply voltage correspond to that shown on the name plate? Only specified wires are used for all wiring, and all wires are connected correctly. System is properly grounded.
SiUS091601EA Field Settings for FTX, FVXS Series 4. Field Settings for FTX, FVXS Series 4.1 Temperature Display Switch ARC480 Series You can select Fahrenheit or Celsius for temperature display. Press TEMP button and ON TIMER buttons simultaneously for 5 seconds to change the unit of temperature display. You can also change the unit of temperature display by pressing Temp and buttons simultaneously for 5 seconds.
Field Settings for FTX, FVXS Series 4.2 SiUS091601EA When 2 Units are Installed in 1 Room Outline When 2 indoor units are installed in 1 room, 1 of the 2 indoor units and the corresponding wireless remote controller can be set for different address. FTX09/12/15NMV JU 1. 2. 3. 4. 5. Remove the battery cover of the remote controller. Cut the address jumper. Press the center of TEMP button and OFF switch on the remote controller at the same time. Select A (address setting) with TEMP or TEMP button.
SiUS091601EA FTX18/24UVJU Field Settings for FTX, FVXS Series 1. 2. 3. 4. 5. 6. Remove the front grille. Remove the electrical box. Remove the shield plate of the electrical box. Cut the address setting jumper JA on the PCB. Remove the cover of remote controller battery. Cut the address setting jumper J4. Indoor unit PCB Wireless Remote Controller Jumper (J4) ADDRESS 1 2 EXIST CUT ADDRESS:JA ADDRESS EXIST 1 CUT 2 JB JA JC Do not cut the left jumper.
Field Settings for FTX, FVXS Series 4.3 SiUS091601EA Caution Replace the PCB if you cut a jumper unintentionally. Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of them. Caution Replace the remote controller if you cut a jumper unintentionally. Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of them.
SiUS091601EA Field Settings for FDMQ Series 5. Field Settings for FDMQ Series 5.1 How to Change the Field Settings Outline If optional accessories are mounted on the indoor unit, the indoor unit setting may have to be changed. Refer to the instruction manual for each optional accessory. Note Procedure When using 2 remote controllers for 1 indoor unit, change the field settings from MAIN remote controller. Note that the field settings can not be set from SUB remote controller.
Field Settings for FDMQ Series SiUS091601EA 3. Highlight the mode, and select desired “Mode No.” by using (Up/Down) button. 4. In the case of setting per indoor unit during group control (When Mode No. such as 20 , 22 , 23 , 25 are selected), highlight the unit No. and select “Indoor unit No.” to be set by using (Up/Down) button. (In the case of group setting, this operation is not needed.) In the case of individual setting per indoor unit, current settings are displayed. And, SECOND CODE NO.
SiUS091601EA Field Settings for FDMQ Series BRC082A43 Wireless Remote Controller UP button Mode No. Field setting mode First code No. DOWN button RESERVE button MODE button Second code No. INSPECTION/TEST button R7000287 To set the field settings, you have to change: Mode No. First code No. Second code No. 1. When in normal mode, hold down /TEST button for at least 4 seconds to enter the Field Set mode. 2. Select the desired Mode No. with MODE button. 3.
Field Settings for FDMQ Series Overview of Field Settings First Mode Code No. No. 11 (21) 0 Light 10 (20) Second Code No. 01 02 Approx. 2,500 hrs. Approx. 200 hrs. 3 Display 7 OFF Heavy 5.2 SiUS091601EA Description of setting 03 Approx. 1,250 hrs. — Approx. 100 hrs.
SiUS091601EA Field Settings for FDMQ Series 18/24 class First Mode Code No. No. 13 (23) Second Code No. External static pressure 05 50 Pa 06 60 Pa 07 70 Pa 08 80 Pa 6 09 90 Pa 10 100 Pa 11 110 Pa 12 120 Pa 13 130 Pa 14 140 Pa 15 150 Pa Factory Setting 5.3 MAIN/SUB and Address Setting for Wireless Remote Controller Outline If setting multiple wireless remote controllers to operate in one room, perform address setting for the receiver and the wireless remote controller.
Field Settings for FDMQ Series SiUS091601EA Wireless address switch Set the address setting switch (SS2) on the signal receiver PCB according to the table below. No.1 No.2 1 2 3 1 2 3 No.3 Address setting switch (SS2) R7000183 Wireless Remote Controller Address R7000184 1 2 3 R7000185 Factory set is 1. Change the wireless remote controller address setting by the following steps, if necessary. 1.
SiUS091601EA Multiple Settings or Field Settings for FDMQ Series When the indoor unit is controlled by an outside controller (central remote controller, etc.), the indoor unit sometimes does not respond to ON/OFF command or temperature setting command from the wireless remote controller. Check what setting the customer needs and make the multiple setting as shown below. Remote Controller Multiple settings Remote controller display : Standard All items displayed.
Field Settings for Outdoor Unit SiUS091601EA 6. Field Settings for Outdoor Unit 6.1 Facility Setting (cooling at low outdoor temperature) Outline This function is limited only for facilities (the target of air conditioning is equipment such as computers). Never use it in a residence or office (the space where there is a human). Details 09/12/15 class Cutting jumper 6 (J6) on the circuit board will expand the operation range down to 5°F (–15°C).
SiUS091601EA 6.2 Field Settings for Outdoor Unit Drain Pan Heater When attaching the drain pan heater 1. Attach the drain pan heater in accordance with the installation manual included with the drain pan heater. 2. Turn on SW6-1 on the PCB.
Silicone Grease on Power Transistor/Diode Bridge SiUS091601EA 7. Silicone Grease on Power Transistor/Diode Bridge Outline Apply the specified silicone grease to the heat radiation part of a power transistor/diode bridge when you replace an outdoor unit PCB. The silicone grease encourages the heat radiation of a power transistor/diode bridge. Details 1. 2. 3. 4. Wipe off the old silicone grease completely. Apply the silicone grease evenly. See the illustrations below for examples of application.
SiUS091601EA Part 8 Appendix 1. Piping Diagrams......................................................................................221 1.1 Indoor Unit................................................................................................ 221 1.2 Outdoor Unit ............................................................................................. 223 2. Wiring Diagrams......................................................................................226 2.1 Indoor Unit...................
Piping Diagrams SiUS091601EA 1. Piping Diagrams 1.1 Indoor Unit FTX09/12NMVJU FTX15NMVJU INDOOR UNIT INDOOR UNIT HEAT EXCHANGER 1/4 CuT 1/4 CuT DISTRIBUTOR HEAT EXCHANGER THERMISTOR ON HEAT EXCH. FIELD PIPING 1/4 CuT FIELD PIPING CROSS FLOW FAN (1/4 CuT) SINGLE UNION M JOINT THERMISTOR ON HEAT EXCH.
SiUS091601EA Piping Diagrams FVXS09/12NVJU FVXS15NVJU INDOOR UNIT INDOOR UNIT MUFFLER ASSY 9/32 CuT 1/4 CuT 1/4 CuT THERMISTOR ON HEAT EXCH. TURBO FAN FAN MOTOR 1/4 CuT 1/4 CuT THERMISTOR ON HEAT EXCH.
Piping Diagrams 1.
SiUS091601EA Piping Diagrams RXL15QMVJU 3D100007 RXL18UMVJU 3D123368 Part 8 Appendix 224
Piping Diagrams SiUS091601EA RXL24UMVJU 3D107985A 225 Part 8 Appendix
SiUS091601EA Wiring Diagrams 2. Wiring Diagrams 2.1 Indoor Unit FTX09/12NMVJU 3D086429D Note(s) Part 8 Appendix PCB1: Control PCB PCB2: Display/signal receiver PCB Refer to page 22 for Printed Circuit Board Connector Wiring Diagram.
Wiring Diagrams SiUS091601EA FTX15NMVJU 3D090199B Note(s) 227 PCB1: Filter PCB PCB2: Control PCB PCB3: Display/signal receiver PCB Refer to page 24 for Printed Circuit Board Connector Wiring Diagram.
SiUS091601EA Wiring Diagrams FTX18/24UVJU C: 3D060942W Note(s) Part 8 Appendix PCB1: Control PCB PCB2: Signal receiver PCB PCB3: Display PCB PCB4: INTELLIGENT EYE sensor PCB Refer to page 26 for Printed Circuit Board Connector Wiring Diagram.
Wiring Diagrams SiUS091601EA FVXS09/12/15NVJU PCB2 PCB3 S27 S2W(4) S26 V1 F1U ~RECTIFIER~ H1 BLK WHT RED 3.15A H2 S4W GRN GRN/YLW MR10 WIRELESS REMOTE CONTROLLER PCB4 S1W LED1 LED2 H1P H2P S47 S46 F2U 3.15A E1 S1 7 4 1 M1S M2S INDOOR M RED ORG YLW PNK BLU M RED ORG YLW PNK BLU S42 1 S21 E3 BLU BRN ORG WHT M HA M1F t° S48 S49 R1T 6 S41 1 PCB1 S32 5 CAUTION NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN.
SiUS091601EA Wiring Diagrams FDMQ12/18/24RVJU 3D112629A Note(s) Part 8 Appendix A1P: Control PCB A2P: Indoor fan PCB Refer to page 30 for Printed Circuit Board Connector Wiring Diagram.
Wiring Diagrams 2.2 SiUS091601EA Outdoor Unit RXL09QMVJU C: 3D099947 Note(s) 231 PCB1: Main PCB Refer to page 34 for Printed Circuit Board Connector Wiring Diagram.
SiUS091601EA Wiring Diagrams RXL12QMVJU C: 3D099948 Note(s) Part 8 Appendix PCB: Main PCB Refer to page 36 for Printed Circuit Board Connector Wiring Diagram.
Wiring Diagrams SiUS091601EA RXL12QMVJU9 C: 3D122861 Note(s) 233 PCB: Main PCB Refer to page 36 for Printed Circuit Board Connector Wiring Diagram.
SiUS091601EA Wiring Diagrams RXL15QMVJU C: 3D099952 Note(s) Part 8 Appendix PCB: Main PCB Refer to page 38 for Printed Circuit Board Connector Wiring Diagram.
Wiring Diagrams SiUS091601EA RXL18/24UMVJU C: 3D122866 Note(s) 235 PCB1: Main PCB PCB2: Service monitor PCB Refer to page 39 for Printed Circuit Board Connector Wiring Diagram.
SiUS091601EA Operation Limit 3.
zz Daikin products are manufactured for export to numerous countries throughout the world. Prior to purchase, please confirm with your local authorized importer, distributor and/or retailer whether this product conforms to the applicable standards, and is suitable for use, in the region where the product will be used. This statement does not purport to exclude, restrict or modify the application of any local legislation. zz Ask a qualified installer or contractor to install this product.
