Manual No.
'10 • SR-T-091 CONTENTS 1. SPECIFICATIONS ........................................................................................ (1) Wall mounted type (SRK) ..................................................................... (2) Floor standing type (SRF) .................................................................... (3) Ceiling concealed type (SRR) .............................................................. (4) Ceiling cassette-4way compact type (FDTC) .......................................
'10 • SR-T-091 10. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ...............111 10.1 Models SRK20㨪50ZJ-S ......................................................................111 (1) Operation control function by remote controller ..................................111 (2) Unit ON/OFF button ...........................................................................112 (3) Auto restart function .........................................................................
'10 • SR-T-091 (9) Outline of cooling operation .................................................................143 (10) Outline of automatic operation ............................................................143 (11) Protective control function ..................................................................144 10.4 Models SRR25 35ZJ-S .......................................................................150 (1) Operation control function by remote controller ...................................
'10 • SR-T-091 (4) Check of anomalous operation data with the remote controller ..........206 (5) Inverter checker for diagnosis of inverter output ................................207 (6) Outdoor unit controller failure diagnosis circuit diagram .....................208 11.2.2 Troubleshooting flow ....................................................................209 (1) List of troubles ....................................................................................209 (2) Troubleshooting ...........
'10 • SR-T-091 10 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 10.1 Models SRK20 ~ 50ZJ-S (1) Operation control function by remote controller Operation section FAN SPEED button OPERATION MODE select button Each time the button is pressed, the display is switched over in turn. Each time the button pressed, the display is switched over in turn. ON/OFF (luminous) button HI POWER/ECONO button Press to start operation, press again to stop. This button changes the HIGH POWER/ ECONOMY mode.
'10 • SR-T-091 (2)ޓUnit ON/OFF button (a) Operation (b) Details of operation Function Indoor temperature Fan speed Flap/Louver Timer Switch setting operation mode Cooling Thermal dry Heating Unit ON/OFF button (3)ޓAuto restart function (a) Jumper wire (JA1) (b) 1) 2) (4)ޓCustom cord switching procedure Jumper wire (JA2) (a) Modifying the indoor printed circuit board (b) Modifying the wireless remote controller 1) Cut 2) - 112 -
'10 • SR-T-091 (5)ޓFlap and louver control (a) Flap (Flap stopped) (Swing) Angle of Flap from Horizontal Remote controller display COOL , DRY, FAN Approx. 10° Approx. 25° Approx. 40° Approx. 50° Approx. 60° HEAT Approx. 25° Approx. 40° Approx. 50° Approx. 60° Approx. 70° (b) Louver (Louver stopped) (Swing) (Spot) (Wide) Angle of Louver Remote controller display Center installation Left Approx. 50° Left Approx. 20° Center Right end installation Left Approx. 50° Left Approx.
'10 • SR-T-091 (6)ޓ3D auto operation (a) 1) Operation mode At cooling At heating Air flow selection AUTO Indoor temp. – Setting temp. >5°C Indoor temp. – Setting temp. < = 5°C HIGH POWER AUTO Setting temp. – Indoor temp. >5°C Setting temp. – Indoor temp.
'10 • SR-T-091 (7)ޓTimer operation (a) Comfortable timer setting (ON timer) (b) Sleep timer operation (c) OFF timer operation (8)ޓInstallation location setting (a) Setting 1) If the air conditioning unit is running, press the ON/OFF button to stop. 2) Press the AIR FLOW AIR FLOW (UP/DOWN) button and the (LEFT/RIGHT) button together for 5 seconds or more. 3) Setting the air-conditioning installation location.
'10 • SR-T-091 (9)ޓOutline of heating operation (a) Operation of major functional components in heating mode Heating Thermostat ON Thermostat OFF Failure Compressor ON OFF OFF Indoor fan motor ON ON(HOT KEEP) OFF Outdoor fan motor ON OFF (few minutes ON) OFF 4-way valve ON ON OFF (3 minutes ON) (b) Details of control at each operation mode (pattern) 1) Fuzzy operation Model SRK20ZJ-S SRK25ZJ-S SRK35ZJ-S SRK50ZJ-S Auto 30~115rps 30~115rps 30~115rps 23~106rps HI 30~115rps 30
'10 • SR-T-091 e) a) b) c) e) − − 2) a) (model 50 : 10 b) 16 minutes and 50 seconds (model 50 : 18 minutes). ) ¡Defrast operation Heating operation Max. 16 minutes and 50 seconds 2~7 minutes ̪ (Mode 50 Nax.18 minutes) Hot keep operation ̪Depends on an operation condition, the time can be longer than 7 minutes.
'10 • SR-T-091 (b) 1) 2) When both the indoor and the outdoor air temperatures are in the range “A”, cooling or heating is switched depending on the difference between the setting temperature and the indoor air temperature. 3) When the operation mode has been judged following the change of setting temperature with the remote controller, the hourly judgment of operation mode is cancelled.
'10 • SR-T-091 3) Reset conditions: a) b) (c) Cooling high pressure control 1) Purpose: 2) Detector: 3) Detail of operation: (Example) Fuzzy (3) 6rps After lapse of 30 sec. or over (1) (3) 6rps After lapse of 30 sec. or over (1) lower limit (3) After lapse of 30 sec.
'10 • SR-T-091 (e) Heating high pressure control 1) Purpose: 2) Detector: 3) Detail of operation: (Example) Fuzzy 4rps(1) After lapse of 20 sec. or over(3) (3) 4rps After lapse of 20 sec. or over After lapse of 20 sec. or over(3) 8rps(2) (1) 8rps(2) Note (1) Value in ( ) are for the model 50.
'10 • SR-T-091 Protective control Normal operation 21 22 Outdoor air temperature(°C) c) . Reset conditions: • Model 50 a) Operating conditions : When the outdoor air temperature (TH2) is 11ºC or higher continues for 30 seconds while the compressor command speed other than 0 rps. b) Detail of operation i) Taking the upper limit of compressor command speed range at 78 rps, if the output speed obtained with the fuzzy calculation exceeds the upper limit, the upper limit value is maintained.
'10 • SR-T-091 • Model 50 1) ޓOperating conditions: When the outdoor air temperature (TH2) is lower than 4ºC or higher continues for 30 seconds while the compressor command speed is other than 0 rps. 2) ޓDetail of operation: The lower limit compressor command speed is change as shown in the figure belo. Lower limit 29 rps Normal operation 4 6 Outdoor air temperature(°C) 3) ޓReset conditions: When either of the following condition is satisfied.
'10 • SR-T-091 (k) Outdoor unit failure item 1), 2) is satisfied.
'10 • SR-T-091 Heating 1) Operating conditions: 2) Detail of operation: 3) Reset conditions: (model 50 : 0ºC) (model 50 : 2ºC) a) b) (q) Refrigeration cycle system protection 1) 2) 3) Starting conditions a) When 5 minutes have elapsed after the compressor ON or the completion of the defrost control b) c) Other than the defrost control When, after meeting the conditions of a) and b) above, the compressor speed, indoor air temperature (Th1) and indoor heat exchanger temperature (Th2) have met
'10 • SR-T-091 10.2 Models SRK20~60ZJX-S (1) Operation control function by remote controller 4 Operation section FAN SPEED button OPERATION MODE select button Each time the button is pressed, the display is switched over in turn. Each time the button pressed, the display is switched over in turn. ON/OFF (luminous) button HI POWER/ECONO button Press to start operation, press again to stop. This button changes the HIGH POWER/ ECONOMY mode.
'10 • SR-T-091 (2) Unit ON/OFF button When the remote controller batteries become weak, or if the remote controller is lost or malfunctioning, this button may be used to turn the unit on and off. (a) Operation Push the button once to place the unit in the automatic mode. Push it once more to turn the unit off.
'10 • SR-T-091 (5) Flap and louver control Control the flap and louver by AIRFLOW (LEFT/RIGHT) button on the wireless remote controller. (UP/DOWN) and (a) Flap Each time when you press the AIRFLOW (UP/DOWN) button the mode changes as follows. (Flap stopped) (Swing) Angle of Flap from Horizontal Remote controller display (b) COOL , DRY, FAN Approx. 5° Approx. 20° Approx. 35° Approx. 45° Approx. 60° HEAT Approx. 20° Approx. 35° Approx. 45° Approx. 60° Approx.
'10 • SR-T-091 (6) 3D auto operation Control the flap and louver by 3D AUTO button on the wireless remote controller. Air flow selection and air flow direction are automatically controlled, allowing the entire indoor to efficiently conditioned. (a) During Cooling and Heating (Including auto cooling and heating) 1) Air flow selection is determined according to indoor temperature and setting temperature. Operation mode At cooling At heating 2) Air flow selection AUTO Indoor temp. – Setting temp.
'10 • SR-T-091 (7) Timer operation (a) Comfortable timer setting (ON timer) If the timer is set at ON when the operation select switch is set at the cooling or heating, or the cooling or heating in auto mode operation is selected, the comfortable timer starts and determines the starting time of next operation based on the initial value of 15 minutes and the relationship between the indoor temperature at the setting time (temperature of room temperature sensor) and the setting temperature.
'10 • SR-T-091 (9) Outline of heating operation (a) Operation of major functional components in heating mode Heating (b) Thermostat ON Thermostat OFF Failure Compressor ON OFF OFF Indoor fan motor ON ON(HOT KEEP) OFF Outdoor fan motor ON OFF (few minutes ON) OFF 4-way valve ON ON OFF (3 minutes ON) Details of control at each operation mode (pattern) 1) Fuzzy operation Deviation between the indoor temperature setting correction temperature and the return air temperature is calculated i
'10 • SR-T-091 e) During continuous compressor operation In addition, when the speed command from the indoor controller of the indoor unit during heating operation has counted 0 rps 10 times or more and all conditions of a), b), c) and e) above and the outdoor air temperature is 3ºC or less are satisfied (note that when the temperature for outdoor heat exchanger sensor (TH1) is −5ºC or less: 62 rps or more, 2) −4ºC or less: less than 62 rps), defrost operation is started.
'10 • SR-T-091 (b) The unit checks the temperature every hour after the start of operation and, if the result of check is not same as the previous operation mode, changes the operation mode. (c) When the unit is started again within one hour after the stop of automatic operation or when the automatic operation is selected during heating, cooling or dehumidifying operation, the unit is operated in the previous operation mode. (d) Setting temperature can be adjusted within the following range.
'10 • SR-T-091 (c) Cooling high pressure control 1) Purpose: Prevents anomalous high pressure operation during cooling. 2) Detector: Outdoor heat exchanger sensor (TH1) 3) Detail of operation: (Example) Fuzzy (3) 6rps After lapse of 30 sec. or over (1) 6rps(1) After lapse of 30 sec. or over(3) lower limit speed 30 rps After lapse of 30 sec.
'10 • SR-T-091 (e) Heating high pressure control 1) Purpose: Prevents anomalous high pressure operation during heating. 2) Detector: Indoor heat exchanger sensor (Th2) 3) Detail of operation: (Example) Fuzzy After lapse of 20 sec. or over(3) 4rps (1) 4rps(1) (3) After lapse of 20 sec. or over (3) After lapse of 20 sec.
'10 • SR-T-091 (g) Heating low outdoor temperature protective control • Model 20~35 1) Operating conditions: When the outdoor air temperature (TH2) is lower than -10ºC or higher continues for 30 seconds while the compressor command speed is other than 0 rps. 2) The lower limit compressor command speed is change as shown in the figure below. Detail of operation: Lower limit 45 rps Normal operation -10 -7 Outdoor air temperature (°C) 3) When either of the following condition is satisfied.
'10 • SR-T-091 (4) Lower limit speed Item Model Lower Limit Speed b) (i) Cooling Heating 20~35 20 rps 30 rps 50, 60 25 rps 32 rps If the temperature of 110ºC (models 50, 60 : 115ºC) is detected by the sensor on the discharge pipe, then the compressor will stop immediately. When the discharge pipe temperature drops and the time delay of 3 minutes is over, the unit starts again within 1 hour but there is no start at the third time.
'10 • SR-T-091 (p) Outdoor fan control at low outdoor temperature U Cooling 1) Operating conditions: When the outdoor air temperature (TH2) is 22ºC or lower continues for 30 seconds while the 2) Detail of operation: After the outdoor fan operates at A speed for 60 seconds; the corresponding outdoor heat compressor command speed is other than 0 rps. exchanger temperature shall implement the following controls.
'10 • SR-T-091 10.3 Models SRF25~50ZJX-S (1) Operation control function by remote controller Operation section Model All models FAN SPEED button OPERATION MODE select button Each time the button is pressed, the display is switched over in turn. Each time the button pressed, the display is switched over in turn. HI POWER/ECONO button ON/OFF (luminous) button This button changes the HIGH POWER/ ECONOMY mode. Press to start operation, press again to stop.
'10 • SR-T-091 (2) Unit ON/OFF button When the remote controller batteries become weak, or if the remote controller is lost or malfunctioning, this button may be used to turn the unit on and off. (a) Operation Push the button once to place the unit in the automatic mode. Push it once more to turn the unit off.
'10 • SR-T-091 (5) Flap control Control the flap by AIRFLOW (UP/DOWN) button on the wireless remote controller. (a) Flap Each time when you press the AIRFLOW (UP/DOWN) button the mode changes as follows. (Flap stopped) (Swing) Angle of Flap from Horizontal Remote controller display (b) COOL , DRY, FAN Approx. 60° Approx. 50° Approx. 38° HEAT Approx. 44° Approx. 32° Approx. 21.5° Approx. 12° Approx. 21.5° Approx. 12° Approx.
'10 • SR-T-091 (b) Auto air outlet selection 1) COOL, DRY operation a) In case both lower and upper outlets operation is selected in Cooling or Dry operation, both outlets will be kept for sixty minutes after the start or until indoor temperature is below the setting point. And then the air outlet will change to the upper outlet. That state will be maintained until switch is turned off.
'10 • SR-T-091 Defrosting operation 1) Starting conditions (Defrosting operation can be started only when all of the following conditions are met.) a) After start of heating operation When it elapsed 45 (model 50 : 35) minutes. (Accumulated compressor operation time) b) After end of defrosting operation When it elapsed 45 (model 50 : 35) minutes.
'10 • SR-T-091 (9) Outline of cooling operation (a) Operation of major functional components in Cooling mode Cooling (b) Thermostat ON Thermostat OFF Failure Compressor ON OFF OFF Indoor fan motor ON ON OFF Outdoor fan motor ON OFF (few minutes ON) OFF (few minutes ON) 4-way valve OFF OFF OFF Detail of control in each mode (Pattern) 1) Fuzzy operation During the fuzzy operation, the air flow and the compressor speed are controlled by calculating the difference between the indoor tempe
'10 • SR-T-091 (11) Protective control function (a) Frost prevention control (During cooling or dehumidifying) 1) 2) Operating conditions a) Indoor heat exchanger temperature (Th2) is lower than 5ºC. b) 5 minutes after reaching the compressor command speed except 0 rps. compressor command speed Detail of anti-frost operation Item 5°C or lower 2.
'10 • SR-T-091 (d) Cooling low outdoor temperature protective control 1) Operating conditions: When the outdoor air temperature (TH2) is 22ºC or lower continues for 20 seconds while the compressor command speed is other than 0 rps. 2) Detail of operation: a) The lower limit of the compressor command speed is set to 44 (30) rps and even if the speed becomes lower than 44 (30) rps, the speed is kept to 44 (30) rps. However, when the thermo becomes OFF, the speed is reduced to 0 rps.
'10 • SR-T-091 Unit : ºC Model 50 A RPSmin < 88 88 < = RPSmin < 108 108 < = RPSmin B C D 48.5 56 58 61 44 51.5 53.5 56.5 39 46.5 48.5 51.5 Note (1) RPSmin: The lower one between the outdoor speed and the compressor command speed (f) Heating overload protective control 1) Operating conditions: When the outdoor air temperature (TH2) is 22ºC (model 50 : 17ºC) or higher continues for 30 seconds while the compressor command speed other than 0 rps.
'10 • SR-T-091 (h) Compressor overheat protection 1) Purpose: It is designed to prevent deterioration of oil, burnout of motor coil and other trouble resulting from the compressor overheat. 2) Detail of operation a) Speeds are controlled with temperature detected by the sensor mounted on the discharge pipe. (Example) Fuzzy 4 rps (1) After lapse of 3 min. or over (3) After lapse of 3 min. or over (3) After lapse of 3 min.
'10 • SR-T-091 (m) Serial signal transmission error protection 1) Purpose: Prevents malfunction resulting from error on the indoor ↔ outdoor signals. 2) Detail of operation: If the compressor is operating and a serial signal cannot be received from the indoor control with outdoor control having serial signals continues for 7 minute and 35 seconds, the compressor is stopped.
'10 • SR-T-091 (q) Refrigeration cycle system protection 1) Starting conditions a) When 5 minutes have elapsed after the compressor ON or the completion of the defrost control b) Other than the defrost control c) When, after meeting the conditions of a) and b) above, the compressor speed, indoor air temperature (Th1) and indoor heat exchanger temperature (Th2) have met the conditions in the following table for 5 minutes: Operation mode Compressor speed (N) Indoor air temperature (Th1) Indoor air
'10 • SR-T-091 10.4 Models SRR25,35ZJ-S (1) Operation control function by remote controller Operation section Model All models Each time the button is pressed, the display is switched over in turn. Each time the button pressed, the display is switched over in turn. Press to start operation, press again to stop. This button changes the air flow (up/down) direction. This button is not used. (Air flow direction adjustment can not be performed.) These buttons set the room temperature.
'10 • SR-T-091 (2) Unit ON/OFF button When the remote controller batteries become weak, or if the remote controller is lost or malfunctioning, this button may be used to turn the unit on and off. (a) Operation Push the button once to place the unit in the automatic mode. Push it once more to turn the unit off.
'10 • SR-T-091 (5) Timer operation (a) Comfortable timer setting (ON timer) If the timer is set at ON when the operation select switch is set at the cooling or heating, or the cooling or heating in auto mode operation is selected, the comfortable timer starts and determines the starting time of next operation based on the initial value of 15 minutes and the relationship between the indoor temperature at the setting time (temperature of room temperature sensor) and the setting temperature.
'10 • SR-T-091 Outdoor heat exchanger temperature (㷄) 0 -5 rt n io at sta re tu ra pe -10 em t Defrost operation start er st op ro -15 ef D -20 -20 -15 -10 -5 0 5 10 Outdoor air temperature (㷄) e) During continuous compressor operation In addition, when the speed command from the indoor controller of the indoor unit during heating operation has counted 0 rps 10 times or more and all conditions of a), b), c) and e) above and the outdoor air temperature is 3°C or less are satisfi
'10 • SR-T-091 (8) Outline of automatic operation (a) Determination of operation mode The unit checks the indoor air temperature and the outdoor air temperature, determines the operation mode, and then begins in the automatic operation. Cooling 27.5 25.5 Dehumidifying Indoor air temperature (˚C) 19.
'10 • SR-T-091 (b) Cooling overload protective control 1) Operating conditions: When the outdoor air temperature (TH2) has become continuously for 30 seconds at 41ºC or more, or 47ºC or more with the compressor running, the lower limit speed of compressor is brought up. Model SRR25, 35ZJ-S Item Outdoor air temperature 41°C or more 47°C or more 30 rps 40 rps Lower limit speed 2) Detail of operation a) The outdoor fan is stepped up by 3 speed step. (Upper limit 7th speed.
'10 • SR-T-091 3) (e) Reset conditions: When either of the following condition is satisfied a) The outdoor air temperature (TH2) is D ˚C or higher. b) The compressor command speed is 0 rps. Heating high pressure control 1) Purpose: Prevents anomalous high pressure operation during heating. 2) Detector: Indoor heat exchanger sensor (Th2) 3) Detail of operation: (Example) Fuzzy After lapse of 20 sec. or over(3) 4rps (1) 8rps 4rps(1) (3) After lapse of 20 sec.
'10 • SR-T-091 (g) Heating low outdoor temperature protective control 1) 2) Operating conditions: When the outdoor air temperature (TH2) is lower than -10ºC or higher continues for 30 seconds while the compressor command speed is other than 0 rps. The lower limit compressor command speed is change as shown in the figure below. Detail of operation: Lower limit 45 rps Normal operation -10 -7 Outdoor air temperature (°C) 3) (h) When either of the following condition is satisfied.
'10 • SR-T-091 (k) Outdoor unit failure This is a function for determining when there is trouble with the outdoor unit during air conditioning. The compressor is stopped if any one of the following in item 1), 2) is satisfied. Once the unit is stopped by this function, it is not restarted. 1) When the input current is measured at 1 A or less for 3 continuous minutes or more. 2) If the outdoor unit sends a 0 rps signal to the indoor unit 3 times or more within 20 minutes of the power being turned on.
'10 • SR-T-091 U 1) Heating Operating conditions: When the outdoor air temperature (TH2) is 4ºC or lower continues for 30 seconds while the compressor command speed is other than 0 rps. 2) Detail of operation: The outdoor fan is stepped up by 2 speed step at each 20 seconds. (Upper limit 8th speed) 3) Reset conditions: When either of the following conditions is satisfied a) The outdoor air temperature (TH2) is 6ºC or higher. b) The compressor command speed is 0 rps.
'10 • SR-T-091 10.5 Models FDTC25,35VD (1) Remote controller (Option parts) (a) Wired remote controller The figure below shows the remote controller with the cover opened. Note that all the items that may be displayed in the liquid crystal display area are shown in the figure for the sake of explanation Characters displayed with dots in the liquid crystal display area are abbreviated. The figure below shows the remote control with the cover opened.
'10 • SR-T-091 (b) Wireless remote controller Indication section Indicates set temperature. Indicates the status of swing louver. Indicates selected operation with . Indicates the selected airflow volume Indicates for two seconds when FILTER button is pressed. Indicates when ON-TIMER is set. Indicates when OFF-TIMER is set. Indicates the ON-TIMER setting time. Nothing displayed when ON-TIMER is not set. Indicates OFF-TIMER setting time. Indicates the current time when the OFF-TIMER is not set.
'10 • SR-T-091 (2) Operation control function by the wired remote controller (a) Switching sequence of the operation mode switches of remote controller $29 #//, &!. (%!4 !54/ (b) [CPU reset] (c) This functions when “CHECK” and “GRILL” buttons on the remote controller are pressed simultaneously. Operation is same as that of the power supply reset. [Power failure compensation function]...
'10 • SR-T-091 (3) Operation control function by the indoor controller (a) Auto operation If “Auto” mode is selected by the remote controller, the heating and the cooling are automatically switched according to the difference between outdoor air temperature and setting temperature and the difference between setting temperature and return air temperature.
'10 • SR-T-091 (d) Timer operation 1) Sleep timer Set the duration of time from the present to the time to turn off the air-conditioner. It can be selected from 10 steps in the range from “OFF 1 hour later” to “OFF 10 hours later”. After the sleep timer setting, the remaining time is displayed with progress of time in the unit of hour. 2) OFF timer Time to turn OFF the air-conditioner can be set in the unit of 10 minutes. 3) ON timer Time to turn ON the air-conditioner can be set.
'10 • SR-T-091 (g) Hot keep Hot keep control is performed at the start of the defrost control. 1) Control a) 2) (h) When the indoor heat exchanger temperature (detected with ThI-R1 or R2) drops to 35°C or lower, the speed of indoor fan is changed to the lower tap at each setting. b) During the hot keep, the louver horizontal control signal is transmitted.
'10 • SR-T-091 2) Automatic louver level setting during heating 3) At the hot start with the heating thermostat OFF, regardless whether the auto swing switch is operated or not (auto swing or louver stop), the louver takes the level position (In order to prevent the cold start). The louver position display LCD continues to show the display which has been shown before entering this control.
'10 • SR-T-091 (m) Operation check/drain pump test run operation mode 1) 2) If the power is turned on by the dip switch (SW7-1) on the indoor PCB when electric power source is supplied, it enters the mode of operation check/drain pump test run. It is ineffective (prohibited) to change the switch after turning power on. When the communication with the remote controller has been established within 60 seconds after turning power on by the dip switch (SW7-1) ON, it enters the operation check mode.
'10 • SR-T-091 (p) Anomalous fan motor After starting the fan motor, if the fan motor speed is 200rpm or less is detected for 30 seconds continuously and 4 times within 60 minutes, then fan motor stops with the anomalous stop (E16). (q) Plural unit control – Control of 16 units group by one remote controller 1) Function One remote controller switch can control a group of multiple number of unit (Max. 16 indoor units).
'10 • SR-T-091 (t) Operation permission/prohibition (In case of adopting card key switches or commercially available timers) When the indoor function setting of wired remote controller for “Operation permission/prohibition” is changed from “Invalid (Factory default)” to “ Valid”, following control becomes effective.
'10 • SR-T-091 2) Remote operation input Remote operation input connector (CnT-6) is provided on the indoor control PCB. However remote operation by CnT-6 is not effective, when “Center mode” is selected by center controller. In case of plural unit (twin, triple, double twin), remote operation input to CnT-6 on the slave indoor unit is invalid.
'10 • SR-T-091 Individual operation (Factory default) ON CnT-6 All units operation (Local setting) OFF Only the unit directly connected to the remote controller can be operated. Unit ① only Only the unit directly connected to the remote controller can be stopped opeartion. Unit ① only ON OFF All units in one remote controller system can be stopped operation. All units in one remote controller system can be operated. Units ①−Ⓝ Units ①−Ⓝ When more than one indoor unit (Max.
'10 • SR-T-091 (4) Operation control function by the outdoor controller Defrosting operation 1) Starting conditions (Defrosting operation can be started only when all of the following conditions are met.) a) After start of heating operation When it elapsed 45 minutes. (Accumulated compressor operation time) b) After end of defrosting operation When it elapsed 45 minutes.
'10 • SR-T-091 (b) Cooling overload protective control 1) Operating conditions: When the outdoor air temperature (TH2) has become continuously for 30 seconds at 41ºC or more, or 47ºC or more with the compressor running, the lower limit speed of compressor is brought up. Model Item FDTC25, 35VD Outdoor air temperature Lower limit speed 2) 41°C or more 47°C or more 30 rps 40 rps Detail of operation a) The outdoor fan is stepped up by 3 speed step. (Upper limit 7th speed.
'10 • SR-T-091 3) (e) Reset conditions: When either of the following condition is satisfied a) The outdoor air temperature (TH2) is D ˚C or higher. b) The compressor command speed is 0 rps. Heating high pressure control 1) Purpose: Prevents anomalous high pressure operation during heating. 2) Detector: Indoor heat exchanger sensor (THI-R) 3) Detail of operation: (Example) Fuzzy After lapse of 20 sec. or over(3) 4rps (1) 8rps 4rps(1) After lapse of 20 sec.
'10 • SR-T-091 (g) Heating low outdoor temperature protective control 1) Operating conditions: When the outdoor air temperature (TH2) is lower than -10ºC or higher continues for 30 sec- 2) Detail of operation: onds while the compressor command speed is other than 0 rps. The lower limit compressor command speed is change as shown in the figure below. Lower limit 45 rps Normal operation -10 -7 Outdoor air temperature (°C) 3) (h) When either of the following condition is satisfied.
'10 • SR-T-091 (k) Outdoor unit failure This is a function for determining when there is trouble with the outdoor unit during air conditioning. The compressor is stopped if any one of the following in item 1), 2) is satisfied. Once the unit is stopped by this function, it is not restarted. 1) When the input current is measured at 1 A or less for 3 continuous minutes or more. 2) If the outdoor unit sends a 0 rps signal to the indoor unit 3 times or more within 20 minutes of the power being turned on.
'10 • SR-T-091 (o) Refrigeration cycle system protection 1) Starting conditions a) When 5 minutes have elapsed after the compressor ON or the completion of the defrost control b) Other than the defrost control c) When, after meeting the conditions of a) and b) above, the compressor speed, indoor air temperature (Th1) and indoor heat exchanger temperature (Th2) have met the conditions in the following table for 5 minutes: 2) 3) Operation mode Compressor speed (N) Indoor air temperature (Th1) In
'10 • SR-T-091 11 MAINTENANCE DATA 11.
'10 • SR-T-091 (4) Troubleshooting procedure (If the air conditioner runs) NO YES 180. NO 181 ~ 187. YES YES NO 181 ~ 187.
'10 • SR-T-091 (5) Self-diagnosis table (2) Indoor unit display panel Wired remote Description RUN TIMER controller of trouble display light light Cause Display (flashing) condition 1 time flash ON — Heat exchanger sensor 1 error • Broken heat exchanger sensor 1 wire, poor connector connection • Indoor PCB is faulty When a heat exchanger sensor 1 wire disconnection is detected while operation is stopped.
'10 • SR-T-091 (6) Service mode (Trouble mode access function) (a) Explanation of terms Term Explanation Service mode The service mode is the mode where service data are displayed by flashing of the display lights when the operations in item (b) below are performed with the indoor controller. Service data These are the contents of error displays and protective stops which occurred in the past in the air conditioner system.
'10 • SR-T-091 G ` ; B , B " z ; " z B " ' & # (%% "' (' * !$ &'#$ # ' & ' & & ' ! & " ' ' & ' & & ' ! & 㧗 㧩 ޓ%#! ' ' % ' "&'%( ' #"& #% %%#% # (%% "' (' &
'10 • SR-T-091 (Example) Remote controller setting Operation switching Cooling Displayed data Fan speed Temperature switching setting MED 21ºC Displays the reason for the stop (error code) the previous time an error was displayed. 22ºC Displays the reason for the stop (error code) 2 times previous when an error was displayed. 23ºC Displays the reason for the stop (error code) 3 times previous when an error was displayed.
'10 • SR-T-091 (c) Error code, stop code table Number of flashes when in service mode Stop coad RUN or TIMER light Error coad light (10's digit) (1's digit) 3 time flash 8 time flash Error Auto display recovery Normal 5 time flash 05 5 time flash 35 Cooling high pressure control Cooling overload operation. When the outdoor heat exchanger sensor's value exceeds Outdoor unit fan speed drops. the set value. Outdoor heat exchanger sensor is short circuit.
'10 • SR-T-091 @ " ; { , D " z { ' " ' & # (%% "' (' * !$ &'#$ # ' & ' & & ' ! & " ' ' & ' & & ' ! & 㧗 㧩 ޓ%#! ' ' % ' "&'%( ' #"& #% %%#% # (%% "' (' & ' & ' & & '
'10 • SR-T-091 (e) Room temperature sensor, indoor heat exchanger sensor, outdoor air temperature sensor, outdoor heat exchanger sensor table Units: °C TIMER light (1’s digit) RUN light (10’s digit) 0 1 2 3 4 5 6 7 8 9 6 -60 -61 -62 -63 -64 5 -50 -51 -52 -53 4 -40 -41 -42 -43 -54 -55 -56 -57 -58 -59 -44 -45 -46 -47 -48 -49 3 -30 -31 -32 2 -20 -21 -33 -34 -35 -36 -37 -38 -39 1 -10 -11 -22 -23 -24 -25 -26 -27 -28 -29 -12 -13 -14 -15 -16 -1
'10 • SR-T-091 (f) Discharge pipe sensor table Units: °C TIMER light (1’s digit) RUN light (10’s digit) 0 1 2 3 4 5 6 7 8 9 3 -60 -62 -64 2 -40 -42 -44 -46 -48 -50 -52 -54 -56 -58 1 -20 -22 -24 -26 -28 -30 -32 -34 -36 -38 -2 -4 -6 -8 -10 -12 -14 -16 -18 Buzzer sound Yes (sounds for 0.
'10 • SR-T-091 Service data record form 182) - 188 -
'10 • SR-T-091 (7) Inspection procedures corresponding to detail of trouble Broken sensor wire, connector poor connection Sensor error Sensor temperature characteristics (Room temp., indoor heat exchanger temp., outdoor heat exchanger temp., outdoor air temp.
'10 • SR-T-091 Compressor lock, Compressor wiring short circuit, Compressor output is open phase, Outdoor PCB is faulty, Service valve is closed, EEV is faulty, Compressor faulty.
'10 • SR-T-091 Gas shortage, defective discharge pipe sensor Over heat of compressor 189) Wiring error including power cable, defective indoor/ outdoor PCB Error of signal transmission ② ③ ② ③ ① ② - 191 -
'10 • SR-T-091 Insufficient refregerant amount, Faulty power transistor, Broken compressor wire Service valve close, Defective EEV, Defective outdoor PCB Trouble of outdoor unit (1) (2) ◆ (1) (3) 198 Notes (1) (2) 195 (3) Check coil resistance, see page 190.
'10 • SR-T-091 Defective compressor, defective outdoor PCB Rotor lock See page 190. [Drain piping defective,pump defect, float switch, indoor PCB] Drain abnormality (SRR only) NO Has an overflow developed? Is the float switch operating? NO Indoor PCB is defective. YES NO Is the drain piping clogged or at the wrong gradient? Inspect float switch. YES Is there output for drain motor driver? NO Repair and clean. YES Drain motor is defective. Inspect wiring. Indoor PCB is defective.
'10 • SR-T-091 (b) Outdoor unit Phenomenon Operation mode Sensor Heat exchanger sensor Cooling Ourdoor air temperature sensor Cooling Shortcircuit Disconnected wire Defrosting is performed for 10 minutes at approx. 45 (models 50, 60 : 35) minutes. Heating Discharge pipe sensor Defrosting is performed for 10 minutes at approx. 45 (models 50, 60 : 35) minutes.
'10 • SR-T-091 (C) Power transistor inspection procedure [Use a tester with a needle indicator for the inspection. (Do not use a digital tester. Check in the AC 300 volt range.)] (1) If there is a self-diagnosis display, inspect the compressor system (burns, wiring mistakes, etc.) If no problems are found, check the output of the power transistor. (2) Output inspection procedure Disconnect the terminals for the compresseor.
'10 • SR-T-091 (11) Outdoor unit inspection points 189. 198. 198.
- 197 - Orange Red White Yellow Yellow／Green OR RD WH Y Y／G Indoor unit Power source 1 Phase 220-240V 50Hz T2 T1 N 3 2 1 N L Y／G Y／G WH 250V 20A FUSE Y／G BR WH BK G1 ROUT S IN RIN CNMAIN S-1 SO RO RD BK WH WH BK C-2 CNSUB S-2 S R tº CNTH tº TH1 TH2 TH3 tº L FILTER UNIT EEV M WH RD W BK V U FMo M CM 3∼ M Inspection of outdoor fan motor See page 198. 193. CNFAN W V U Inspection of electronic expansion valve See page 198.
'10 • SR-T-091 (a) Inspection of electronic expansion valve ! ! ! "# ! $ ! % ! & & * ! +& * ! ! @ 6 4 3 1 2 Q Red Blue Orange ";=
'10 • SR-T-091 11.2 FDTC series 11.2.1 Diagnosing of microcomputer circuit (1) Selfdiagnosis function (a) Check indicator table Whether a failure exists or not on the indoor unit can be know by the contents of remote controller error code, indoor unit green LED (power pilot lamp and microcomputer normality pilot lamp) or red LED (check pilot lamp).
'10 • SR-T-091 (ii) Outdoor unit Remote controller Error code Red LED Indoor control PCB Green LED Red LED Location of trouble Installation, operation status Stays OFF Keeps flashing Outdoor heat exchanger temperature sensor Outdoor control PCB Installation, operation status Stays OFF Keeps flashing Discharge pipe temperature sensor Outdoor control PCB Stays OFF Keeps flashing Outdoor heat exchanger temperature sensor • Higher outdoor heat exchanger temperature • Defective outdoor heat exchan
'10 • SR-T-091 (iv) Display sequence of error codes or inspection indicator lamps N Occurrence of one kind of error Displays are shown respectively according to errors. N Occurrence of plural kinds of error Section Category of display Error code on remote controller • Displays the error of higher priority (When plural errors are persisting) Red LED on indoor control PCB • Displays the present errors. (When a new error has occurred after the former error was reset.
'10 • SR-T-091 N Error log and reset Error indicator Memorized error log Remote controller display • Higher priority error is memorized. Red LED on indoor control PCB • Not memorized. Reset • Stop the unit by pressing the ON/OFF switch of remote controller. • If the unit has recovered from anomaly, it can be operated.
'10 • SR-T-091 • Control PCB PSB012D931F C Replace and set up the PCB according to this instruction. Ԙ Set to an appropriate address and function using switch on PCB. ޓSelect the same setting with the removed PCB. item switch Content of control Address SW2 Plural indoor units control by 1 remote controller Test run SW7-1 䋭 Normal Operation check/drain motor test run 䇳 䇳㪑㪦㪥䇭䋭㪑㪦㪝㪝 ԙ Set to an appropriate capacity using the model selector switch(SW6).
'10 • SR-T-091 • Power PCB PSB012D953A This PCB is a general PCB. Replace the PCB according to this instruction. Ԙ Replace the PCB (refer to right dwg.) 1. Unscrew terminal of the wiring(yellow/green) soldered to PCB from the box. 2. Cut the band that binds the wiring (red and blue) from connector CNW1 and CNW2, and the wiring (yellow/green) from PCB (T2/T3) . (Note 1) 㵘(However, do not cut the band that binds only the red and blue wirings.) 3.
'10 • SR-T-091 ٨DIP switch setting list Switches SW2 SW6-1 SW6-2 SW6-3 SW6-4 SW7-1 SW7-2 SW7-3 SW7-4 JSL1 Description Default setting Address No.
'10 • SR-T-091 (4) Check of anomalous operation data with the remote 01 Data Item (Operation Mode) 02 (Set Temperature) 03 (Return Air Temperature) 04 (Remote Controller Thermistor Tempeature) 05 (Indoor Heat Exchanger Thermistor / U Bend) 06 (Indoor Heat Exchanger Thermistor /Capillary) 07 (Indoor Heat Exchanger Thermistor /Gas Header) 08 (Indoor Unit Fan Speed) loading). 09 (Frequency Requirements) Next, operation data of the indoor unit will be displayed. Skip to step .
'10 • SR-T-091 (5) Inverter checker for diagnosis of inverter output 䇭㩷䃂Checking method (a) Setup procedure of checker. 1) Power OFF (Turn off the breaker). 2) Remove the terminal cover of compressor and disconnect the wires (U, V, W) from compressor. 3) Connect the wires U (Red) , V (White) and W (Black) of the checker to the terminal of disconnected wires (U, V, W) from compressor respectively. (b) Operation for judgment. 1) Power ON and start check operation on cooling or heating mode.
'10 • SR-T-091 Outdoor unit controller failure diagnosis circuit diagram 242.
'10 • SR-T-091 11.2.2 Troubleshooting flow (1) List of troubles No. Remote controller display Description of trouble Reference page 1 None Operates but does not cool. 210 2 None Operates but does not heat.
'10 • SR-T-091 (2) Troubleshooting Error code Remote controller: None 1. Applicable model LED Green Red Content Operates but does not cool Indoor Keeps flashing Stays OFF 5. Troubleshooting All models Diagnosis Countermeasure Check the indoor unit fan operation. Check the temperature differnce between return and supply air. 2.
'10 • SR-T-091 Error code Remote controller: None 1.Applicable model LED Green Red Content Operates but does not heat Indoor Keeps flashing Stays OFF 5. Troubleshooting All models Diagnosis Countermeasure Check the indoor unit fan operation. Check the temperature differnce between return and supply air. 2. Error detection method Is the temperature differnce between return and supply air 10-30degC at heating? YES Does the heat load increase after installtion? NO It is normal.
'10 • SR-T-091 Error code Remote controller: None 1.Applicable model LED Green Red Content Earth leakage breaker activated Indoor Stays OFF Stays OFF 5. Troubleshooting All models Diagnosis Are OK the insulation resistance and coil resistance of compressor? Countermeasure NO Replace compressor.* NO Secure insulation resistance. YES 2.
'10 • SR-T-091 Error code Remote controller: None 1.Applicable model LED Green Red Indoor – – Content Excessive noise/vibration (1/3) 5. Troubleshooting All models Diagnosis Does noise/vibration occur during or soon after stopping operation of air-conditioner? 2. Error detection method If excessive noise/vibration persists when sufficient time has elapsed after stopping the unit, it is considered that the airconditioner is not the source.
'10 • SR-T-091 Error code Remote controller: None 1.Applicable model LED Green Red Indoor – – Content Excessive noise/vibration (2/3) 5. Troubleshooting All models Diagnosis Countermeasure From 1/3 Are the pipes contacting the casing? 2. Error detection method [Unit side] Does noise/vibration occur when the cooling/ heating operation is performed normally? YES Rearrange the piping to avoid contact with the casing.
'10 • SR-T-091 Error code Remote controller: None 1.Applicable model LED Green Red Indoor – – Content Excessive noise/vibration (3/3) 5. Troubleshooting All models Diagnosis Countermeasure From 2/3 2. Error detection method Adjustment during commissioning Does noise/vibration occur when the cooling/heating operation is in anomalous condition? If insufficient cooling/ heating problem happens due to anomalous operating conditions at cooling/ heating, followings are suspicious.
'10 • SR-T-091 Error code Remote controller: None 1.Applicable model LED Green Red Content Louver motor failure Indoor Keeps flashing Stays OFF 5. Troubleshooting All models Diagnosis Countermeasure Check at the indoor unit side. Operate after waiting for more than 1 minute. 2. Error detection method Does the louver operate at the power on? NO NO Is LM wiring broken? YES YES Is LM locked? NO YES Is the louver operable with the remote controller? YES Repair wiring.
'10 • SR-T-091 Error code Remote controller: None 1.Applicable model LED Green Indoor Red Content Power supply system error Stays OFF Stays OFF (Power supply to indoor control PCB) 5. Troubleshooting All models Diagnosis Is AC220/240V detected between 1 and 2 on the terminal block of indoor unit? Countermeasure NO Is AC220/240V for 1-phase unit detected between 1 and 2 on the terminal block of outdoor unit? YES 2.
'10 • SR-T-091 Error code Remote controller: None 1.Applicable model LED Green Red Content Indoor Keeps flashing Stays OFF Power supply system error (Power supply to remote controller) 5. Troubleshooting All models Diagnosis Isn't there any loose connection of remote controller wires? Countermeasure YES Correct. YES Replace wires. YES Replace remote controller. NO Defective indoor power PCBªReplace. NO 2.
'10 • SR-T-091 Error code Remote controller: INSPECT I/U 1.Applicable model LED Green Red Content Indoor Keeps flashing Stays OFF INSPECT I/U (When 1 or 2 remote controllers are connected) 5. Troubleshooting All models Diagnosis Countermeasure Are 2 units of remote controller connected? YES NO ⑴， ⑵ 2. Error detection method ⑵ Is it set at the slave remote controller? Set one remote controller for “Master” and the other for “Slave” Note (1) Use SW1 to set at master or slave.
'10 • SR-T-091 Error code Remote controller: INSPECT I/U 1.Applicable model LED Green Red Content INSPECT I/U Indoor Keeps flashing Stays OFF (Connection of 3 units or more remote controller) 5. Troubleshooting All models Diagnosis Are more than 3 units of remote controller connected? Countermeasure YES Reduce to 2 units or less. NO 2. Error detection method Indoor unit cannot communicate for more than 30 minutes after the power on with remote controller.
'10 • SR-T-091 LED Error code Remote controller: WAIT 1.Applicable model Green Red Content Communication error at initial operation (1/3) Indoor Keeps flashing Stays OFF 5. Troubleshooting All models Diagnosis Countermeasure When the remote controller LCD displays “ WAIT ” 2 minutes after the power on. The remote controller LCD displays “ WAIT ” 2 minutes after the power on. Turn the breaker off once and then back on again 3 minutes later. Is normal condition restored? NO 2.
'10 • SR-T-091 LED Error code Remote controller: WAIT 1.Applicable model Green Red Indoor Keeps flashing Stays OFF Diagnosis Isn’t there a short-circuit between phases of outdoor PCB? Countermeasure NO Replace the outdoor PCB YES 2. Error detection method Communication error at initial operation (2/3) 5.
'10 • SR-T-091 LED Error code Remote controller: WAIT 1.Applicable model Green Red Communication error at initial operation (3/3) Indoor Keeps flashing Stays OFF 5. Troubleshooting All models When the remote controller display is extinguished after the power on. Content Diagnosis Countermeasure Remote controller display is extinguished after the power on. Is the green LED on the indoor unit flashing? NO Is the fuse on the indoor control PCB OK? 2. Error detection method NO Replace fuse.
'10 • SR-T-091 Error code Remote controller: E1 1.Applicable model LED Green Red Content Remote controller communication circuit error Indoor Keeps flashing Stays OFF 5. Troubleshooting All models Diagnosis Is it possible to reset normally by the power reset? Countermeasure Malfunction by noise Check peripheral environment. YES NO 2. Error detection method When normal communication between the remote controller and the indoor unit is interrupted for more than 2 minutes.
'10 • SR-T-091 Error code Remote controller: E5 1.Applicable model LED Green Red Content Communication error during operation Indoor Keeps flashing 2 times flash 5. Troubleshooting All models Diagnosis Countermeasure Note (1) Inspect faulty connections (disconnection, looseness) on the outdoor unit terminal block. Is the connection of signal wires at the outdoor unit side OK? 2.
'10 • SR-T-091 Error code Remote controller: E6 1.Applicable model LED Green Red Content Indoor heat exchanger temperature thermistor anomaly Indoor Keeps flashing 1 time flash 5. Troubleshooting All models Diagnosis Countermeasure Is the connection of indoor heat exchanger temperature thermistor connector OK? NO Correct. ª Insert connector securely. NO Defective indoor heat exchanger temperature thermistor ª Replace. YES Defective indoor control PCB ª Replace.
'10 • SR-T-091 Error code Remote controller: E7 1.Applicable model LED Green Red Content Indoor Keeps flashing 1 time flash Return air temperature thermistor anomaly 5. Troubleshooting All models Diagnosis Is the connection of return air temperature thermistor connector OK? Countermeasure NO Correct. ª Connect connector. NO Defective return air temperature thermistor ª Replace. YES Defective indoor control PCB ª Replace.
'10 • SR-T-091 Error code Remote controller: E8 1.Applicable model LED Green Red Content Heating overload operation Indoor Keeps flashing 1 time flash 5. Troubleshooting All models Diagnosis Countermeasure Is the air filter clogged? NO YES 2. Error detection method Indoor heat exchanger temperature thermistor (ThI-R1, R2, R3) Is the indoor heat exchanger temperature thermistor connection OK? NO Wash. Defective indoor heat exchanger temperature thermistor connectorª Correct.
'10 • SR-T-091 Error code Remote controller: E9 1.Applicable model LED Green Red Content Drain trouble Indoor Keeps flashing 1 time flash 5. Troubleshooting All models Diagnosis Countermeasure Check the error data in the remote controller. Is there any overflow? NO 2. Error detection method Float switch is activated Is the CNI connected firmly? YES NO Defective indoor control PCB ª Replace. NO Defective indoor control PCB ª Replace.
'10 • SR-T-091 Error code Remote controller: E10 1.Applicable model LED Green Red Excessive number of connected indoor units (more than 17 units) by controlling with one remoto controller Content Indoor Keeps flashing Stays OFF 5. Troubleshooting All models Diagnosis Aren't more than 17 indoor units connected to one remote controller? Countermeasure NO YES 2. Error detection method When it detects more than 17 of indoor units connected to one remote contorller 3.
'10 • SR-T-091 Error code Remote controller: E16 1.Applicable model LED Green Red Content Indoor fan motor anomaly Indoor Keeps flashing Stays OFF 5. Troubleshooting All models Diagnosis Countermeasure Does any foreign material intervene in rotational area of fan propeller? Remove foreign material. YES NO 2. Error detection method Does the fan rotate smoothly when turned by hand? Replace the fan motor.
'10 • SR-T-091 Error code Remote controller: E19 1.Applicable model LED Green Red Content Indoor Keeps flashing 1 time flash Indoor unit operation check, drain motor check setting error 5. Troubleshooting All models Diagnosis Countermeasure E19 occurs when the power ON 2. Error detection method After indoor operation check, when the communication between indoor and outdoor unit is established and SW7-1 is still kept ON.
'10 • SR-T-091 Error code Remote controller: E28 1.Applicable model LED Green Red Detection of anomalously low temperature (resistance) of remote controller temperature thermistor (Thc) Remote controller temperature thermistor anomaly Indoor Keeps flashing Stays OFF 5. Troubleshooting All models 2. Error detection method Content Diagnosis Is the remote controller temperature thermistor connected properly? 3. Condition of Error displayed 4.
'10 • SR-T-091 Error code Remote controller: E35 1.Applicable model LED Green Red Content Cooling overload operation Indoor Keeps flashing Stays OFF 5. Troubleshooting All models Diagnosis Countermeasure * For the characteristics of outdoor heat exchanger temperature Are normal sensor, refer to E37. the characteristics of outdoor heat exchanger NO temperature sensor normal? Replace outdoor heat exchanger temperature sensor. YES 2.
'10 • SR-T-091 Error code Remote controller: E36 1.Applicable model LED Green Red Content Discharge pipe temperature error Indoor Keeps flashing Stays OFF 5. Troubleshooting All models Diagnosis Countermeasure * For the characteristics of discharge Are the pipe temperature, refer to E39. characteristics of discharge pipe temperature NO sensor normal? Replace discharge pipe temperature sensor. YES 2.
'10 • SR-T-091 Error code Remote controller: E37 1.Applicable model LED Green Red Content Outdoor heat exchanger temperature sensor anomaly Indoor Keeps flashing Stays OFF 5. Troubleshooting All models Diagnosis Countermeasure Is the outdoor heat exchanger temperature sensor connector connected properly? NO Correct connector. YES 2.
'10 • SR-T-091 Error code Remote controller: E38 1.Applicable model LED Green Red Content Outdoor air temperature sensor anomaly Indoor Keeps flashing Stays OFF 5. Troubleshooting All models Diagnosis Countermeasure Is the outdoor air temperature sensor connector connected properly? NO Correct connector. YES For the characteristics of outdoor air temperature sensor, see the following graph. Is the characteristics of the NO outdoor air temperature sensor OK? 2.
'10 • SR-T-091 Error code Remote controller: E39 1.Applicable model LED Green Red Content Discharge pipe temperature sensor anomaly Indoor Keeps flashing Stays OFF 5. Troubleshooting All models Diagnosis Countermeasure Is the discharge pipe temperature sensor connector connected properly? Correct connector. NO YES 2. Error detection method For the characteristics of discharge pipe Are the temperature sensor, see the following graph.
'10 • SR-T-091 LED Green Red Indoor control PCB Keeps flashing Stays OFF Error code Remote controller: E42 1.Applicable model Content Current cut (1/2) 5. Troubleshooting All models Diagnosis Is the Power supply voltage OK? Countermeasure NO Check power supply. NO Open the valves. YES 2. Error detection method In order to prevent from overcurrent of inverter, if the current exceeds the specifications, it makes the compressor stopping.
'10 • SR-T-091 Error code Remote controller: E42 1.Applicable model LED Green Red Content Current cut (2/2) Indoor Keeps flashing Stays OFF 5. Troubleshooting All models Diagnosis Countermeasure Continue from previous page Is the checked result of power transistor module OK? 2. Error detection method In order to prevent from overcurrent of inverter, if the current exceeds the specifications, it makes the compressor stopping. NO • Defective outdoor PCBªReplace.
'10 • SR-T-091 Error code Remote controller: E47 1.Applicable model LED Green Red Content Active filter voltage error Indoor Keeps flashing Stays OFF 5. Troubleshooting All models Diagnosis Countermeasure Is the power supply normal? NO Restore normal condition. NO Restore normal condition. NO Remove foreign matter like dust, fouling, etc. YES 2. Error detection method Error is displayed if the converter voltage exceeds DC340V (3 times within 20 minutes).
'10 • SR-T-091 Error code Remote controller: E48 1.Applicable model LED Green Red Content Outdoor fan motor anomaly Indoor Keeps flashing Stays OFF 5. Troubleshooting All models Diagnosis Countermeasure Does any foreign material intervene in rotational area of fan propeller? YES Remove foreign matter. NO Replace fan motor. If resistance between (Vm):blue -(GND):black is detected 1kΩ or lower, it is faulty. NO 2.
'10 • SR-T-091 Error code Remote controller: E51 1.Applicable model LED Green Red Content Power transistor anomaly Indoor Keeps flashing Stays OFF 5. Troubleshooting All models Diagnosis Check soldered surfaces on the outdoor control PCB for foreign matter like dust, fouling,etc. 2. Error detection method Power transistor primary current Countermeasure NO Remove foreign matter like dust, fouling, etc. YES Isn’t F2 fuse (250V, 20A)blown? Replace fuse. NO 3.
'10 • SR-T-091 Error code Remote controller: E57 1.Applicable model LED Green Red Content Insufficient refrigerant amount or detection of service valve closure Indoor Keeps flashing Stays OFF 5. Troubleshooting All models Diagnosis Countermeasure Is the service valve fully opened? NO Open fully. NO Correct indoor heat exchanger, return air temperature thermistor connector connections. NO Defective indoor heat exchanger, return air temperature thermistor ª Replace. NO Charge refrigerant.
'10 • SR-T-091 Error code Remote controller: E58 1.Applicable model LED Green Red Content Current safe stop Indoor Keeps flashing Stays OFF 5. Troubleshooting All models Diagnosis Is the refrigerant amount nomal ? Countermeasure NO Adjust the refrigerant amount properly. NO Secure space for inlet and outlet. NO Replace compressor. NO Replace sensor. YES 2.
'10 • SR-T-091 Error code Remote controller: E59 1.Applicable model LED Green Red Content Compressor startup failure Indoor Keeps flashing Stays OFF 5. Troubleshooting All models Diagnosis Compressor does not start at all. Neither noise nor vibration cannot be heard Does compressor startup? Countermeasure Disconnect the outdoor fan motor connector and try to startup YES Replace outdoor fan motor NO 2.
'10 • SR-T-091 Error code Remote controller: E60 1.Applicable model LED Green Red Content Compressor rotor lock error Indoor Keeps flashing Stays OFF 5. Troubleshooting All models Diagnosis Is the power supply voltage OK? Countermeasure Check and correct the power supply voltage NO YES Reset the power supply and restart operation. 2.
'10 • SR-T-091 12. OPTION PARTS PJA012D729A 12.1 Instullation of wired remote controller (RC-E4) Read together with indoor unit's installation manual. WARNING Fasten the wiring to the terminal securely and hold the cable securely so as not to apply unexpected stress on the terminal. Loose connection or hold will cause abnormal heat generation or fire. Make sure the power supply is turned off when electric wiring work. Otherwise, electric shock, malfunction and improper running may occur.
'10 • SR-T-091 Connect the remote controller cord to the terminal block. Connect the terminal of remote controller (X,Y) with the terminal of indoor unit (X,Y). (X and Y are no polarity) Wiring route is as shown in the right diagram depending on the pulling out direction.
'10 • SR-T-091 The range of temperature setting When shipped, the range of set temperature differs depending on the operation mode as below. Heating : 16~30˚C (55~86˚F) Except heating (cooling, fan, dry, automatic) : 18~30˚C (62~86˚F) Upper limit and lower limit of set temperature can be changed with remote controller. Upper limit setting: valid during heating operation. Possible to set in the range of 20 to 30˚C (68 to 86˚F).
'10 • SR-T-091 The functional setting The initial function setting for typical using is performed automatically by the indoor unit connected, when remote controller and indoor unit are connected. As long as they are used in a typical manner, there wiil be no need to change the initial settings. If you would like to change the initial setting marked “ ”, set your desired setting as for the selected item. The procedure of functional setting is shown as the following diagram.
'10 • SR-T-091 Note 1: The initial setting marked “ Item Function No. Remote controller function02 Remote controller function06 Remote controller function07 Remote controller function13 ” is decided by connected indoor and outdoor unit, and is automatically defined as following table. Default Model "Auto-RUN" mode selectable indoor unit.
'10 • SR-T-091 Operation message Function description: setting description: How to set function 1. Stop air-conditioner and press (SET) (MODE) buttons at the same time for over three seconds, and the "FUNCTION SET " will be displayed. , Function No. Fixing button 2. Press (SET) button. 7 Finishing button 2 Starting button 3. Make sure which do you want to set, " FUNCTION " (remote controller function) or "I/U FUNCTION " (indoor unit function). 4. Press or button.
'10 • SR-T-091 12.2 Wireles kit (FDTC series : RCN-TC-24W-ER) Notes : Following functions of FDTC Type-D indoor unit series are not able to be set with this wireess remote controller (RCN-TC-24W-ER). 1. Individual flap control system 2. 4-fan speed setting (PHi/Hi/Me/Lo) → 3-fan speed setting (Hi/Me/Lo) PJA012D758 WARNING Fasten the wiring to the terminal securely and hold the cable securely so as not to apply unexpected stress on the terminal.
'10 • SR-T-091 PJA012D758 Remote controller Wireless remote controller’s operable area 1 Standard reachable area of the signal [condition] Illuminance at the receiver: 300lux (when no lighting is installed within 1m of the receiver in an ordinary office.) Installation of the controller holder Caution 1.4m Reachable area of the signal 2.4m Ceiling surface 4. Hot surface or cold surface enough to generate condensation 5. Places exposed to oil mist or steam directly. 6.
'10 • SR-T-091 12.3 Simple wired remote controller (FDTC series : RCH-E3) Notes : Following functions of Type-D indoor unit series are not able to be set with this simple wired remote controller (RCH-E3). 1. Individual flap control system (for FDTC) 2.
'10 • SR-T-091 㪠㫅㩷㪺㪸㫊㪼㩷㫆㪽㩷㪼㫄㪹㪼㪻㪻㫀㫅㪾㩷㫎㫀㫉㫀㫅㪾 㪩㪼㫄㫆㫋㪼㩷㪺㫆㫅㫋㫉㫆㫃㩷㫀㫅㫊㫋㪸㫃㫃㪸㫋㫀㫆㫅㩷㪻㫀㫄㪼㫅㫊㫀㫆㫅㫊 㪮㪸㫃㫃㩷㫊㫌㫉㪽㪸㪺㪼 㪍㪎 㪈㪈㪎 㪏㪊㪅㪌 㪮㫀㫉㫀㫅㪾 㪊㪊㪅㪌 㪈㪍 㪮㫀㫉㫀㫅㪾㩷㫆㫌㫋㫃㪼㫋 㩿㪠㫅㩷㪺㪸㫊㪼㩷㫆㪽㩷㪼㫄㪹㪼㪻㪻㫀㫅㪾㩷㫎㫀㫉㫀㫅㪾㪀 㪈㪉㬍㪎㩷㪪㫃㫆㫋㩷㪿㫆㫃㪼 㪜㫃㪼㪺㫋㫉㫀㪺㪸㫃㩷㪹㫆㫏 䋨㪧㫉㪼㫇㪸㫉㪼㩷㫆㫅㩷㫊㫀㫋㪼䋩 㪠㫅㫊㫋㪸㫃㫃㪸㫋㫀㫆㫅㩷㪿㫆㫃㪼 㪐㬍㪋㪅㪌㩷㪪㫃㫆㫋㩷㪿㫆㫃㪼㩷䋨㪉㩷㫇㫃㪸㪺㪼㫊䋩 㪥㫆㫋㪼㪑㩷㪠㫅㫊㫋㪸㫃㫃㪸㫋㫀㫆㫅㩷㫊㪺㫉㪼㫎㩷㪽㫆㫉㩷㫉㪼㫄㫆㫋㪼㩷㪺㫆㫅㫋㫉㫆㫃㫃㪼㫉 㪤㪋㩷㪪㪺㫉㪼㫎㩷㩿㪉㩷㫇㫀㪼㪺㪼㫊㪀 㪈㪌 㪠㫅㩷㪺㪸㫊㪼㩷㫆㪽㩷㪼㫏㫇㫆㫊㫀㫅㪾㩷㫎㫀㫉㫀㫅㪾 㪫㪿㪼㩷㫉㪼㫄㫆㫋㪼㩷㪺㫆㫅㫋㫉㫆㫃㫃㪼㫉㩷㫎㫀㫉㫀㫅㪾㩷㪺㪸㫅㩷㪹㪼㩷㪼㫏㫋㫉㪸㪺㫋㪼㪻㩷㪽㫉㫆㫄㩷㫋㪿㪼㩷㫌㫇㫇㪼㫉㩷㪺㪼㫅㫋㪼㫉㪅㩷 㪘㪽㫋㪼㫉㩷㫋㪿㪼㩷㫋㪿㫀㫅㩷㫇㪸㫉㫋㩷㫀㫅㩷㫋㪿㪼㩷㫌㫇㫇㪼㫉㩷㫊㫀㪻㪼㩷㫆㪽㩷㫋㪿㪼㩷㫉㪼㫄㫆㫋㪼㩷㪺㫆㫅㫋㫉㫆㫃㫃㪼㫉㩷㫌㫇㫇㪼㫉㩷 㪺
'10 • SR-T-091 Simple Remote Controller Installation Manual PJZ012D069 In case of exposing cord ⑴ Make certain to remove a screw on the bottom surface of the remote controller. Read together with indoor unit's installation manual. WARNING ⑴ Screw ● Fasten the wiring to the terminal securely and hold the cable securely so as not to apply unexpected stress on the terminal. Loose connection or hold will cause abnormal heat generation or fire.
'10 • SR-T-091 3. Master/ slave setting when more than one remote controller are used ⑴ Up to two remote controllers can be connected to one unit (or one group) of indoor unit. Switch indoor unit㩷 㩷 SW1-1 㩷 Setting Function detail Slave remote controller ON OFF Master remote controller 䌘䂾 䌙㩷 䂾 Remote controller line (nonpolarity) 䂾 䌘䂾 䌙㩷 Remote controller “Master” 㩷 SW1-1 “OFF” 㩷 䂾 䌘䂾 䌙㩷 Remote controller “Slave” 㩷 SW1-1 “ON” SW1-1 of the slave remote controller is “Slave” (ON).
'10 • SR-T-091 6. Function setting Each function of the remote controller and the indoor unit is automatically set to the initial setting, which is the standard use, on the occasion of connecting the remote controller with the indoor unit. In the case of the standard use, the setting change is unnecessary. However, if you whould like to change the initial setting “ ○ ”, change the setting for only the item of the function number. Record the setting contents and stored them.
'10 • SR-T-091 7. How to set functions by button operation ⑴ Stop air-conditioning, and simultaneously press AIR CON NO. and at the same time for over three seconds. The function number “01” blinks in the upper right. MODE buttons Function number End button ⑵ Press TEMP△ or TEMP▽ button. Select the function number. Decide button Select button MODE button. ⑶ Press Decide the function number.
'10 • SR-T-091 12.4 Interface kit (SC-BIKN-E) RKZ012A088 a Accessories included in package Be sure to check all the accessories included in package. No. Before use, please read these Safety Precautions thoroughly before installation. Safety precautions Part name Quantity Ԙ Indoor unit's connection cable (cable length: 1.
'10 • SR-T-091 Installation of the interface Install the interface within the range of the connection cable length (approximately 1.3m) from the indoor unit. Wiring inlet Be sure not to extend the connection cable on site. If the connection cable is extended, malfunction may occur. Fix the interface on the wall, pillar or the like. DO NOT install the interface and wired remote controller at the following places.
'10 • SR-T-091 Functions of CNT connector It is available to operate the air conditioning unit and to monitor the operation status with the external control unit (remote display) by sending the input/output signal through CNT connector on the indoor control PCB. 0.3 mm2(Keep the distance between the relay and the CNT terminal within 2 m.) ԘConnect a external remote control unit (locally procured) to CNT terminal. ԙIn case of the pulse input, switch OFF the DIP switch SW2-1 on the interface PCB.
'10 • SR-T-091 Connection of wired remote controller Regarding the connection of wired remote controller, refer to the instruction manual of wired remote controller. ԘSwitch ON the DIP switch SW2-2 (Factory setting : ON) on the interface PCB. DIP suitch (SW2-2) Caution:Wireless remote controller attached to the indoor unit can be used in parallel, after connecting the wired remote controller. However, some of functions other than the basic functions such as RUN/STOP, Temperature Setting, etc.
'10 • SR-T-091 F 12.
'10 • SR-T-091 - 267 -
INVERTER RESIDENTIAL AIR CONDITIONERS Air-Conditioning & Refrigeration Systems Headquarters 16-5, 2-chome, Kounan, Minato-ku, Tokyo, 108-8215, Japan Fax : (03) 6716-5926 Because of our policy of continuous improvement, we reserve the right to make changes in all specifications without notice. C Copyright MITSUBISHI HEAVY INDUSTRIES, LTD.
