AIR CONDITIONER Wall mounted type SERVICE MANUAL INDOOR ASUH18LMAS ASUH24LMAS OUTDOOR AOUH18LMAS1 AOUH24LMAS1 SR_AS052EF_03 2021.11.
Notices: • Product specifications and design are subject to change without notice for future improvement. • For further details, please check with our authorized dealer. Trademarks FGLair™ is trademark of Fujitsu General Limited in the United States, other countries or both. Google Play™ is trademark of Google Inc. App Store® is a service mark of Apple Inc., registered in the U.S. and other countries. Copyright © 2021 Fujitsu General Limited. All rights reserved.
CONTENTS 1. GENERAL INFORMATION 2. TECHNICAL DATA AND PARTS LIST 3. TROUBLESHOOTING 4. CONTROL AND FUNCTIONS 5.
1. GENERAL INFORMATION 2021.11.
CONTENTS 1. GENERAL INFORMATION 1. Specifications..............................................................................................01-1 1-1. Indoor unit ......................................................................................................................01-1 1-2. Outdoor unit....................................................................................................................01-3 2. Dimensions.......................................................................
GENERAL INFORMATION GENERAL INFORMATION 1. Specifications 1-1. Indoor unit Wall mounted Type Inverter heat pump Model name ASUH18LMAS Power supply Power supply intake Available voltage range Rated Cooling Min.—Max. Rated Capacity Heating Min.—Max. Heating (17°F)*1 Cooling Input power Heating Heating (17°F)*1 Cooling Heating Current EER Rated Max. Rated Min.—Max. Rated Min.—Max. Rated Max.
GENERAL INFORMATION GENERAL INFORMATION Wall mounted Type Inverter heat pump Model name Operation range ASUH18LMAS Cooling Heating °F (°C) %RH °F (°C) ASUH24LMAS 64 to 90 (18 to 32) 80 or less 86 (30) or less →ireless (→ired, Mobile app*4 [FGLair™] [option]) Remote controller type NOTES: • Specifications are based on the following conditions: – Cooling: Indoor temperature of 80°FDB (26.67°CDB) /67°F→B (19.44°C→B), and outdoor temperature of 95°FDB (35°CDB) / 75°F→B (23.9°C→B).
Type Inverter heat pump Model name AOUH18LMAS1 Power supply Power supply intake Available voltage range Starting current Airflow rate Fan A Cooling Heating Type × Q'ty Motor output Sound pressure level *1 7.
GENERAL INFORMATION 2-1. Indoor unit ¢ Model: ASUH18LMAS Unit: in (mm) 9-7/16 (240) 11 (280) 38-9/16 (980) 16-7/16 (417) 19 (482) 20-1/16 (510) 16-1/4 (413) 15-3/4 (400) Outline of indoor unit 3-9/16 (90) 1-15/16 (50) 3-1/16 (77) 1-15/16 (50) GENERAL INFORMATION 2. Dimensions for pipe inlet Ø3-1/8 (80) 2-1/16 (52) 2-3/8 (60) 2-1. Indoor unit 16-15/16 (430) for pipe inlet Ø3-1/8 (80) 16-7/16 (418) - (01-4) - 3-9/16 (91) 2-13/16 (72) 2.
CAUTION Do not place any other electrical products or household belongings under the product. Condensation dripping from the product might get them wet, and may cause damage or malfunction to the property. Unit: in (mm) 2 (40) or more 5 (117) or more 71 or more Wall hook bracket 3 (70) or more Outline of the indoor unit 7 (160) or more 71 (1,800) or more 60 (1,500) or more 2-1. Indoor unit - (01-5) - 2. Dimensions GENERAL INFORMATION Provide sufficient installation space for product safety.
13-6/16 (340) 19 (483) 11 (280) 21-7/16 (544) 22-1/16 (560) 45-1/4 (1,150) 20-1/2 (520) 13/16 (20) 20-1/2 (520) 3-9/16 (90) Outline of unit 2-1/2 (64) 10/16 (16) 13-6/16 (340) 1-15/16 (50) 1-15/16 (50) 2-1. Indoor unit 0 ø8 2-6/16 (61) 18-7/8 (479) 19-6/8 (502) - (01-6) - 4-1/4 (108) 7/16 (11) 2.
CAUTION Do not place any other electrical products or household belongings under the product. Condensation dripping from the product might get them wet, and may cause damage or malfunction to the property. 3-8/1 (80) or more 2-1/2 (63) or more Unit: in (mm) Outline of unit 1-15/16 (50) or more 1-15/16 (50) or more 2-3/4 (70) or more 5-1/2 (140) or more 59-1/16 (1,500) or more 2-1. Indoor unit - (01-7) - 2. Dimensions GENERAL INFORMATION Provide sufficient installation space for product safety.
GENERAL INFORMATION ¢ Models: AOUH18LMAS1 and AOUH24LMAS1 Unit: in (mm) 5-5/8 (143) A 11-5/8 (296) Gas 13-15/16 (354) 3-way valve (Gas) 3-way valve (Liquid) 10-1/2 (266) Liquid 1-9/16 (40) 12-5/8 (320) 2-3/16 (55) Liquid 25-9/16 (650) 2-1/2 (64) Gas 5-13/16 (147) 1-1/4 (48) Liquid Top view Detail A Detail B 12-5/8 (320) 37 (940) 1-9/16 (40) 9/16 (14) 2-Ф7/8 (22) Cable port 2-Ф1/8 (28) Cable port 2-Ф7/8 (22) Cable port 2-Ф1/8 (28) Cable port Front view 5-1/2 (140) Side view C 5/8 (1
2. TECHNICAL DATA AND PARTS LIST 2021.11.
CONTENTS 2. TECHNICAL DATA AND PARTS LIST 1. Precautions..................................................................................................02-1 2. Indoor unit parts list....................................................................................02-2 2-1. Model: ASUH18LMAS ....................................................................................................02-2 2-2. Model: ASUH24LMAS .......................................................................................
1. Precautions CAUTION • Service personnel – Any person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from an industry-accredited assessment authority, which authorizes their competence to handle refrigerants safely in accordance with an industry recognized assessment specification. – Servicing shall only be performed as recommended by the equipment manufacturer.
2. Indoor unit parts list ¢ Exterior parts TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST 2-1. Model: ASUH18LMAS 1 20 19 17 a b 2 3 2 16 4 18 15 5 6 c 15 8 14 7 9 9 10 11 13 12 2-1. Model: ASUH18LMAS - (02-2) - 2.
Part no. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 a b c 9388158013 9387476002 9313951047 9383729027 9387597035 9383765056 9387479010 9323342033 9332911008 9317250009 9332438895 9318912005 9384977007 9387756210 9323340008 9333719009 9333704005 9323341036 9333608006 9383730030 — — — 2-1.
¢ Chassis TECHNICAL DATA AND PARTS LIST 51 54 b 52 53 55 57 56 c 70 58 69 59 71 72 61 59 60 61 61 68 63 62 66 67 d 64 e f 65 2-1. Model: ASUH18LMAS - (02-4) - 2.
Part no. 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 9383735158 9387467000 9901013010 9316577008 9711732026 9900627041 9711146052 9711147011 9387587173 9388150000 9388155005 9388182001 9603821005 9387488043 9387714012 9901011016 9383728006 9901011023 9387590142 9316177017 9316904002 9333628004 9387055054 — 9901010071 a b c d e f — — — — — — 2-1.
2-2. Model: ASUH24LMAS TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ¢ Exterior parts 1 13 2 3 a 4 5 6 12 11 7 11 8 11 11 9 8 10 2-2. Model: ASUH24LMAS - (02-6) - 2.
Part no. 1 2 3 4 5 6 7 8 9 10 11 12 13 a 9386990004 9313951047 9386958004 9386959001 9383765063 9387074017 9315212016 9386960007 9332438895 9318912005 9386986007 9387072211 9382114039 — 2-2.
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ¢ Chassis a b c 52 50 51 53 d 55 54 56 69 57 68 f 58 67 e 59 65 66 60 h 65 g 61 65 64 63 2-2. Model: ASUH24LMAS - (02-8) - 62 2.
Part no. 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 a b c d e f g h 9387064155 9901013010 9711732033 9316577008 9900627027 9386988001 9711146090 9711147035 9603933005 9361756007 9387063004 9900139186 9387062007 9900384234 9387060034 9318743012 9388540009 9316177017 9387055009 9306628017 — — — — — — — — 2-2.
3. Outdoor unit parts list ¢ Exterior parts and chassis TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST 3-1. Models: AOUH18LMAS1 and AOUH24LMAS1 1 2 25 23 24 a 3 3 4 5 22 8 21 7 6 20 13 9 10 15 b 16 19 14 11 17 18 3-1. Models: AOUH18LMAS1 and AOUH24LMAS1 - (02-10) - 12 3.
Part no. 1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 17 18 19 20 21 22 23 24 25 9383880001 9383779008 9375361013 313728262708 9900984038 9900727154 9383607004 9383874000 9384997005 9709686317 9711431578 9711431585 9900203085 9383871016 313166024302 9303029015 9383876004 9384196019 9380114000 9383863035 9350680009 9383336003 9603732011 9383862007 9383882005 9374420711 — 9711198006 — 9711203038 — 9711204004 — 9711205001 — 9711212009 — 9711213006 — 9711214003 a b — — 11 3-1.
A 54 TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ¢ Compressor 55 50 56 52 51 57 53 A B a 58 B 66 65 59 64 65 61 65 64 60 63 64 62 3-1. Models: AOUH18LMAS1 and AOUH24LMAS1 b - (02-12) - 3.
Part no. 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 a b 9380516064 9379647243 9900565091 9357804002 9900186029 9374425723 9970194016 9383855115 9970209000 9370947328 9379079013 9377958037 9900985035 9810028006 9379179096 9377973016 9810666000 — — 3-1. Models: AOUH18LMAS1 and AOUH24LMAS1 Part name Sound insulator (Top) Sound insulator (Body) Thermistor (Outdoor temp.
4. Accessories ¢ Model: ASUH18LMAS Part name Exterior Q’ty Part name Exterior Q’ty Operating manual 1 Tapping screw (large) 5 Installation manual 1 Tapping screw (small) 2 Remote controller 1 Battery 2 Remote controller holder 1 Filter holder 2 Cloth tape 1 Air cleaning filters 1 →all hook bracket 1 4-1. Indoor unit - (02-14) - 4. Accessories TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST 4-1.
¢ Model: ASUH24LMAS Exterior Q’ty Part name Exterior Q’ty Operating manual 1 Drain hose insulation 1 Installation manual 1 Cloth tape 1 →all hook bracket 1 Tapping screw (large) 8 Remote controller 1 Tapping screw (small) 2 Battery 2 Air cleaning filters 1 Remote controller holder 1 Filter holder 2 4-1. Indoor unit - (02-15) - 4.
4-2. Outdoor unit Part name Exterior Q’ty Installation manual 1 Drain pipe 1 4-2. Outdoor unit Part name Drain cap - (02-16) - Exterior Q’ty 3 4.
5.
6. Wiring diagrams ¢ Models: ASUH18LMAS and ASUH24LMAS 6-1. Indoor unit - (02-18) - TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST 6-1. Indoor unit 6.
6-2. Outdoor unit TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ¢ Models: AOUH18LMAS1 and AOUH24LMAS1 6-2. Outdoor unit - (02-19) - 6.
7. PC board diagrams TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST 7-1. Models: ASUH18LMAS and ASUH24LMAS CONTROL UNIT 18 model: EZ-0200HHSE 24 model: EZ-0200KHSE TERMINAL L OUTDOOR UNIT POWER SOURCE AC208-230V 60Hz OPTION UNIT (2-WIRE REMOTE CONTROLLER) 1 N 2 AWG22 BLACK AWG22 WHITE AWG22 SERIAL RED 3 EARTH 1 2 3 4 5 CN14 B3 ( 5.
7-2. Models: AOUH18LMAS1 and AOUH24LMAS1 Temperature Thermistor ( Heatsink temp. ) TECHNICAL DATA AND PARTS LIST 32 ℉ 68 ℉ 86 ℉ 15.83 k 5.90 k 3.78 k 0.43 V 1.01 V 1.42 V Thermistor DC5V-1 UL1015 AWG20 GREEN 1 P700 B03B-XAKK-1-A TERMINAL EMI FILTER (A) GRFC-13 2 TURN P108 B3 ( 8.
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST 7-2. Models: AOUH18LMAS1 and AOUH24LMAS1 - (02-22) - 7.
3. TROUBLESHOOTING 2021.11.
CONTENTS 3. TROUBLESHOOTING 1. Error code ....................................................................................................03-1 1-1. How to check the error memory......................................................................................03-1 1-2. How to erase the error memory ......................................................................................03-1 1-3. Error code table (Indoor unit and wired remote controller)..............................................
CONTENTS (continued) 3. Troubleshooting without error code........................................................03-52 3-1. Indoor unit—No power..................................................................................................03-52 3-2. Outdoor unit—No power...............................................................................................03-53 3-3. No operation (Power is on) ...........................................................................................03-54 3-4.
1. Error code →hen a problem occurs in the system or the connected device, the error content is notified by displaying the code. NOTE: This function is only available in a system with indoor or IR receiver units equipped with LED lamps to indicate the error content. If another error occurs later, the stored error memory will be updated automatically and replaced with the new one. (Previous error will be erased.) 1-1.
1-3. Error code table (Indoor unit and wired remote controller) Indoor unit display TROUBLESHOOTING Error contents E: 11.↓. Serial communication error (Serial reverse transfer error) (Outdoor unit) E: 11.↓. Serial communication error (Serial forward transfer error) (Indoor unit) E: 12.↓. →ired remote controller communication error (Indoor unit) E: 18.↓. External communication error (Indoor unit) E: 18.↓. External communication error between indoor unit and →LAN adapter E: 18.↓. Communication error E: 18.
TROUBLESHOOTING Error contents E: 95.↓. Compressor motor control error (Outdoor unit) E: 97.↓. Outdoor unit fan motor error (Outdoor unit) E: 99.↓. 4-way valve error (Outdoor unit) E: A1.↓. Discharge temperature error (Outdoor unit) E: A5.↓. Low pressure error (Outdoor unit) E: AC.↓. Heat sink temperature error (Outdoor unit) 1-3.
1-4. Error code table (Outdoor unit) The operation status is determined by the lighting up and blinking of the LED lamp. After check that ERROR LED lamp blinks, press the ENTER button once. NOTE: For the positions of LED lamp and buttons, refer to "Function settings (for outdoor unit)" in Chapter 5. FIELD →ORK. E: 11.↓. Serial communication error (Serial forward transfer error) (Indoor unit) (Occurs immediately after starting operation) E: 11.↓.
Error contents E: 86.↓. Pressure sensor error (Outdoor unit) TROUBLESHOOTING E: 94.↓. Trip detection (Outdoor unit) E: 95.↓. Compressor motor control error (Outdoor unit) E: 97.↓. Outdoor unit fan motor error (Outdoor unit) E: 99.↓. 4-way valve error (Outdoor unit) E: A1.↓. Discharge temperature error (Outdoor unit) E: A5.↓. Low pressure error (Outdoor unit) E: AC.↓. Heat sink temperature error (Outdoor unit) ● : Light on ○ 1-4.
1-5. Error code table (Wireless LAN indicator) • →ireless LAN control system diagram example Indoor unit Internet Controller PCB Cloud Mobile app (Smart device) TROUBLESHOOTING Outdoor unit TROUBLESHOOTING Wireless LAN router Parts: WLAN adapter • Name of parts Wireless LAN adapter Wireless LAN label MAC: SSID: AP-WF PIN: Connection port • →ireless LAN indicator For confirmation of the error contents, refer the flashing pattern as follows.
1-6. Error code table (Mobile app) • Error display If there is an abnormality on the air conditioning, refer to as follows. →hen the (error button) on the home screen is tapped, error code and error name is displayed. – For Android TROUBLESHOOTING TROUBLESHOOTING Error button Error code Error Name – For iOS Error button Error code Error Name 1-6. Error code table (Mobile app) - (03-7) - 1.
• Error code Error contents Error code 11.1 11.2 11.3 11.4 Outdoor unit main PCB model information error E: 11.↓. Serial communication error (Serial reverse transfer error) (Outdoor unit) E: 11.↓. Serial communication error (Serial forward transfer error) (Indoor unit) E: 12.↓. →ired remote controller communication error (Indoor unit) E: 32.↓. Indoor unit main PCB error (Indoor unit) E: 35.↓. MANUAL AUTO button error (Indoor unit) E: 41.↓. Room temperature sensor error (Indoor unit) E: 42.↓.
1-7. Error message for wireless LAN control (Mobile app) • Error display If there is an abnormality on the wireless control system, refer to error messages as follows. The error message disappears after 5 seconds and the normal screen is displayed. For iOS Error message 1-7. Error message for wireless LAN control (Mobile app) - (03-9) - TROUBLESHOOTING TROUBLESHOOTING For Android Error message 1.
• Error message list – For Android Error message Cause →i-Fi must be enabled to set up new device →e weren’t able to sign you onto null. Please goto the →iFi settings and join the network from there. Return to the app when you’re done. Could not connect to the device at this time. Please reset the device and try again. The user has disabled →i-Fi on the smart device. The smart device and air conditioner are connected to difference →i-Fi networks when attempting to register.
General error TROUBLESHOOTING Cause The smart device has no internet access. Solution Connect the mobile device to the internet. The router the air conditioner Check if the router connected to the air is connected to, has no conditioner has internet access. (↔ou can internet access. check by connecting the mobile device to the router, then opening the website.) If there is no access, connect the router to the internet.
Registration error Cause Solution General error Error message Cause Failed to change password. The smart device has no Cloud not determine service internet access. reachability. Failed to update property. Could not retrieve schedules. The operation couldn’t be completed. Operation timed out. “Device name” is offline. (Device name varies depending on the air conditioner) Solution Connect the mobile device to the internet. Check if the router connected to the air conditioner has internet access.
2.
Check point 4. Check serial signal (Reverse transfer signal) Check serial signal (Reverse transfer signal) • • • • WHITE N BLACK L RED 3 WHITE 2 BLACK 1 + - Check if indicated value swings between AC 90 V and AC 270 V at the outdoor unit terminal 1 —3. If it is abnormal, check the parts below. – Outdoor unit fan motor in "Service parts information" on page 03-80 If outdoor fan motor is abnormal, replace outdoor unit fan motor and main PCB. If the checked parts are normal, replace the main PCB.
Indicator Indoor unit TROUBLESHOOTING Outdoor unit Detective actuator Indoor unit Operation indicator Timer indicator Economy indicator Error code Main PCB Fan motor Forecast of cause 1 time flash 1 time flash Continuous flash E: 11 Refer to "Error code table (Outdoor unit)" on page 03-4 →hen the indoor unit cannot receive the serial signal from outdoor unit more than 2 minutes after power on, or the indoor unit cannot receive the serial signal more than 15 seconds during normal operation.
Check point 4. Check serial signal (reverse transfer signal) Check serial signal (Forward transfer signal) • • • • WHITE N BLACK L RED 3 WHITE 2 BLACK 1 + - Check if indicated value swings between AC 30 V and AC 130 V at outdoor unit terminal 2—3. If it is abnormal, replace main PCB. If it is abnormal, check indoor unit fan motor. (Indoor unit fan motor in "Service parts information" on page 03-80) If indoor unit fan motor is abnormal, replace indoor unit fan motor and main PCB.
TROUBLESHOOTING Indicator Detective actuator Indoor unit outdoor unit Indoor unit Operation indicator Timer indicator Economy indicator Error code Main PCB →ired remote control Forecast of cause 1 time flash 2 time flash Continuous flash E: 12 Refer to "Error code table (Outdoor unit)" on page 03-4 →hen the indoor unit cannot receive the signal from →ired remote controller more than 1 minute during normal operation.
Indicator Indoor unit outdoor unit TROUBLESHOOTING Detective actuator Indoor unit Operation indicator Timer indicator Economy indicator Error code External communication error Forecast of cause 1 time flash 8 time flash Continuous flash E: 18 Refer to "Error code table (Outdoor unit)" on page 03-4 After receiving a signal from the external input and output PCB, the same signal has not been received for 15 seconds. Connection failure →LAN adapter failure Main PCB Check point 1.
Indicator Indoor unit Outdoor unit TROUBLESHOOTING Detective actuator Operation indicator Timer indicator Economy indicator Error code Indoor unit Forecast of cause 2 time flash 3 time flash Continuous flash E: 23 Refer to "Error code table (Outdoor unit)" on page 03-4 The outdoor unit receives the serial signal of applied refrigerant information from indoor unit. Incorrect indoor unit is selected. Check point 1. Check the type of indoor unit • Check the type of the connected indoor unit.
Indicator Indoor unit Operation indicator Timer indicator Economy indicator Error code TROUBLESHOOTING outdoor unit →ired remote controller (2-wire) Detective actuator Indoor unit controller PCB Forecast of cause 2 time flash 6 time flash Continuous flash E: 26 Refer to "Error code table (Outdoor unit)" on page 03-4 • →hen the address number set by auto setting and manual setting are mixed in one remote controller group • →hen the duplicated address number exists in one remote controller group →rong
Indicator TROUBLESHOOTING Detective actuator Indoor unit Operation indicator Timer indicator Economy indicator Error code outdoor unit →ired remote controller (2-wire) Indoor unit main PCB Forecast of cause 2 time flash 9 time flash Continuous flash E: 29 Refer to "Error code table (Outdoor unit)" on page 03-4 →hen the number of the connected indoor unit exceeds the limitation.
Indicator Indoor unit outdoor unit TROUBLESHOOTING Detective actuator Indoor unit Operation indicator Timer indicator Economy indicator Error code main PCB Forecast of cause 3 time flash 2 time flash Continuous flash E: 32 Refer to "Error code table (Outdoor unit)" on page 03-4 →hen power is on and there is some below case. 1. →hen model information of EEPROM is incorrect. 2. →hen the access to EEPROM failed. External cause Defective connection of electric components Main PCB failure Check point 1.
Indicator TROUBLESHOOTING Detective actuator Indoor unit Operation indicator Timer indicator Economy indicator Error code outdoor unit Indoor unit controller PCB Indicator PCB Manual auto switch Forecast of cause 3 time flash 5 time flash Continuous flash E: 35 Refer to "Error code table (Outdoor unit)" on page 03-4 →hen the MANUAL AUTO button becomes on for consecutive 30 (for 18 model) or 60 (for 24 model) or more seconds.
TROUBLESHOOTING Indicator Detective actuator Indoor unit Operation indicator Timer indicator Economy indicator Error code outdoor unit →ired remote controller (2-wire) Indoor unit controller PCB circuit Forecast of cause 3 time flash 10 time flash Continuous flash E: 3A Refer to "Error code table (Outdoor unit)" on page 03-4 →hen the indoor unit detects the configuration of remote controller group abnormal or the indoor unit detects lack of the primary remote controller Terminal connection abnormal
Tip Depending on the connected remote controller type, following setting is required: Connected remote controller DIP switch Jumper (JM9) JM9 2-wire type 2WIRE/3WIRE Factory setting: 2WIRE Disconnected TROUBLESHOOTING 3-wire type 2WIRE/3WIRE Factory setting: 3WIRE Connected (Factory setting) • 2-wire type remote main PCB If the communication PCB is not connected and JM9 is disconnected, 3A error is displayed.
Indicator TROUBLESHOOTING Detective actuator Indoor unit Operation indicator Timer indicator Economy indicator Error code outdoor unit Indoor unit main PCB Room temperature thermistor Forecast of cause 4 time flash 1 time flash Continuous flash E: 41 Refer to "Error code table (Outdoor unit)" on page 03-4 Room temperature thermistor is open or short is detected always. Connector failure Thermistor failure Main PCB failure Check point 1.
2-12. E: 42.X. Indoor unit heat exchanger sensor error (Indoor unit) Detective actuator Indoor unit outdoor unit Indoor unit main PCB Heat exchanger temperature thermistor 4 time flash 2 time flash Continuous flash E: 42 Refer to "Error code table (Outdoor unit)" on page 03-4 →hen heat exchanger temperature thermistor open or short circuit is detected. Connector connection failure Thermistor failure Main PCB failure Forecast of cause Check point 1.
Indicator Indoor unit outdoor unit TROUBLESHOOTING Detective actuator Indoor unit Operation indicator Timer indicator Economy indicator Error code main PCB Fan motor Forecast of cause 5 time flash 1 time flash Continuous flash E: 51 Refer to "Error code table (Outdoor unit)" on page 03-4 →hen the actual rotation number of the indoor unit fan motor is below 1/3 of the target rotation number continuously for more than 56 seconds.
Indicator TROUBLESHOOTING Detective actuator Indoor unit Operation indicator Timer indicator Economy indicator Error code Outdoor unit Indoor unit main PCB Micro switch Forecast of cause 5 time flash 8 time flash Continuous flash E: 58 Refer to "Error code table (Outdoor unit)" on page 03-4 →hen the Micro switch is detected open while running the compressor. Micro switch failure Shorted connector/wire Main PCB failure Check point 1. Check limit switch • • Check operation of Micro switch.
Indicator Indoor unit outdoor unit TROUBLESHOOTING Detective actuator Outdoor unit Operation indicator Timer indicator Economy indicator Error code Main PCB Forecast of cause Check point 1. Reset power supply and operate Does error indication show again? 6 time flash 2 time flash Continuous flash E: 62 Refer to "Error code table (Outdoor unit)" on page 03-4 Access to EEPROM failed due to some cause after outdoor unit started.
Indicator TROUBLESHOOTING Detective actuator Forecast of cause Indoor unit outdoor unit Outdoor unit Operation indicator Timer indicator Economy indicator Error code Inverter PCB Check point 1. Turn the power on again? 6 time flash 3 time flash Continuous flash E: 63 Refer to "Error code table (Outdoor unit)" on page 03-4 Error information received from inverter PCB External cause Power supply to inverter PCB wiring disconnection or open Inverter PCB failure If no, go to "Check point 1-2".
Indicator Indoor unit outdoor unit TROUBLESHOOTING Detective actuator Outdoor unit Operation indicator Timer indicator Economy indicator Error code Main PCB Forecast of cause 6 time flash 4 time flash Continuous flash E: 64 Refer to "Error code table (Outdoor unit)" on page 03-4 • →hen inverter input DC voltage is higher than 420 V for over 3 seconds, the compressor stops. • If the same operation is repeated 5 times, the compressor stops permanently.
Indicator Indoor unit outdoor unit TROUBLESHOOTING Detective actuator Outdoor unit Operation indicator Timer indicator Economy indicator Error code Main PCB Forecast of cause 6 time flash 5 time flash Continuous flash E: 65 Refer to "Error code table (Outdoor unit)" on page 03-4 →hen the signal from FO terminal of IPM is “L” (0 V) during the compressor stopping. Main PCB failure Check point 1. Check main PCB Replace the outdoor unit main PCB. End 2-18. E: 65.↓.
Indicator TROUBLESHOOTING Detective actuator Indoor unit Operation indicator Timer indicator Economy indicator Error code outdoor unit Outdoor unit main PCB Discharge pipe temperature thermistor Forecast of cause 7 time flash 1 time flash Continuous flash E: 71 Refer to "Error code table (Outdoor unit)" on page 03-4 →hen discharge pipe temperature thermistor open or short circuit is detected at power on or while running the compressor Connector failure Thermistor failure Main PCB failure Check point
TROUBLESHOOTING Indicator Detective actuator Indoor unit Operation indicator Timer indicator Economy indicator Error code outdoor unit Heat exchanger liquid temperature thermistor Heat exchanger middle temperature thermistor Forecast of cause 7 time flash 3 time flash Continuous flash E: 73 Refer to "Error code table (Outdoor unit)" on page 03-4 • Heat exchanger liquid temperature thermistor short or open detected • Heat exchanger middle temperature thermistor short or open detected Connector failure
TROUBLESHOOTING Indicator Detective actuator Indoor unit Operation indicator Timer indicator Economy indicator Error code outdoor unit Outdoor unit main PCB Outdoor temperature thermistor Forecast of cause 7 time flash 4 time flash Continuous flash E: 74 Refer to "Error code table (Outdoor unit)" on page 03-4 →hen outdoor temperature thermistor open or short circuit is detected at power on or while running the compressor Connector failure Thermistor failure Main PCB failure Check point 1.
Indicator TROUBLESHOOTING Detective actuator Indoor unit Operation indicator Timer indicator Economy indicator Error code outdoor unit Heat sink temperature thermistor Forecast of cause 7 time flash 7 time flash Continuous flash E: 77 Refer to "Error code table (Outdoor unit)" on page 03-4 Heat sink temperature thermistor short or open detected Connector failure Thermistor failure Inverter PCB failure Check point 1. Check connection of connector • • • Check if connector is loose or removed.
Indicator Indoor unit outdoor unit TROUBLESHOOTING Detective actuator Outdoor unit Operation indicator Timer indicator Economy indicator Error code main PCB Forecast of cause Check point 1.
Indicator TROUBLESHOOTING Detective actuator Indoor unit Operation indicator Timer indicator Economy indicator Error code 8 time flash 6 time flash Continuous flash E: 86 Refer to "Error code table (Outdoor unit)" on page 03-4 →hen pressure switch open is detected in 10 seconds after the power is turned on.
Indicator Operation indicator Timer indicator Economy indicator Error code Indoor unit Outdoor unit Outdoor unit main PCB TROUBLESHOOTING Detective actuator High pressure switch Forecast of cause 8 time flash 6 time flash Continuous flash E: 86 Refer to "Error code table (Outdoor unit)" on page 03-4 30 seconds or more after power-on, when pressure sensor detection value detects the condition below continuously for 30 seconds or more.
Indicator Indoor unit outdoor unit TROUBLESHOOTING Detective actuator Outdoor unit Operation indicator Timer indicator Economy indicator Error code Inverter PCB Main PCB Compressor Forecast of cause 9 time flash 4 time flash Continuous flash E: 94 Refer to "Error code table (Outdoor unit)" on page 03-4 Protection stop by over-current generation after inverter compressor start processing completed generated consecutively 10 times. NOTE: The number of generations is reset when the compressor starts up.
Indicator Indoor unit TROUBLESHOOTING outdoor unit Detective actuator Outdoor unit Operation indicator Timer indicator Economy indicator Error code Inverter PCB Main PCB Compressor Forecast of cause 9 time flash 5 time flash Continuous flash E: 95 Refer to "Error code table (Outdoor unit)" on page 03-4 1. →hen running the compressor, if the detected rotor location is out of phase with actual rotor location more than 90°, the compressor stops. 2.
Indicator Indoor unit TROUBLESHOOTING outdoor unit Detective actuator Outdoor unit Operation indicator Timer indicator Economy indicator Error code Inverter PCB Main PCB Fan motor Forecast of cause 9 time flash 7 time flash Continuous flash E: 97 Refer to "Error code table (Outdoor unit)" on page 03-4 1. →hen outdoor fan rotation speed is less than 100 rpm in 20 seconds after fan motor starts, fan motor stops. 2.
Check point 4. Check output voltage of inverter PCB Check outdoor unit circuit diagram and the voltage. (Measure at inverter PCB side connector) RED FAN MOTOR BLACK WHITE YELLOW BROWN FM TROUBLESHOOTING TROUBLESHOOTING 1 2 3 4 5 6 7 NOTE: For details of wiring diagram, refer to "→iring diagrams" in Chapter 2. TECHNICAL DATA AND PARTS LIST on page 02-18. Read wire DC voltage Red—Black 280 V (AC 220 V -10 %) to 373 V (AC 240 V +10 %) →hite—Black 15±1.
TROUBLESHOOTING Indicator Indoor unit Operation indicator Timer indicator Economy indicator Error code outdoor unit Indoor unit main PCB Heat exchanger temperature thermistor Room temperature thermistor Detective actuator 4-way valve Forecast of cause 9 time flash 9 time flash Continuous flash E: 99 Refer to "Error code table (Outdoor unit)" on page 03-4 →hen the indoor heat exchanger temperature is compared with the room temperature, and either following condition is detected continuously two times,
Check point 4. Check the solenoid coil and 4-way valve TROUBLESHOOTING TROUBLESHOOTING NOTE: Refer solenoid coil and 4-way valve in "Service parts information" on page 03-80. • Solenoid coil Remove P60 from PCB and check the resistance value of coil. Resistance value is 1.97 kΩ. If it is open or abnormal resistance value, replace solenoid coil. • 4-way valve Check each piping temperature, and the location of the valve by the temperature difference.
Indicator TROUBLESHOOTING Detective actuator Indoor unit Operation indicator Timer indicator Economy indicator Error code outdoor unit Outdoor unit main PCB Discharge temperature thermistor Forecast of cause 10 time flash 1 time flash Continuous flash E: A1 Refer to "Error code table (Outdoor unit)" on page 03-4 Protection stop by discharge temperature ≥ 230 °F (110 °C) during compressor operation generated 2 times within 24 hours.
Check point 5. Check the refrigerant amount Check the refrigerant leakage. Check point 6. Replace main PCB TROUBLESHOOTING TROUBLESHOOTING If check point 1 to 5 do not improve the symptom, replace the main PCB. End 2-30. E: A1.↓. Discharge temperature error (Outdoor unit) - (03-48) - 2.
Indicator TROUBLESHOOTING Detective actuator Indoor unit Operation indicator Timer indicator Economy indicator Error code outdoor unit Outdoor unit main PCB Suction pressure sensor Forecast of cause 10 time flash 5 time flash Continuous flash E: A5 Refer to "Error code table (Outdoor unit)" on page 03-4 Protection stop by suction pressure ≥ 0.02 MPaG continued 5 minutes repeats 5 times within 24 hours.
Check point 6. Check the refrigerant amount Check the refrigerant leakage. Check point 7. Replace main PCB TROUBLESHOOTING TROUBLESHOOTING If check point 1 to 6 do not improve the symptom, replace the main PCB. End 2-31. E: A5.↓. Low pressure error (Outdoor unit) - (03-50) - 2.
Indicator TROUBLESHOOTING Detective actuator Indoor unit Operation indicator Timer indicator Economy indicator Error code outdoor unit Outdoor unit inverter PCB Heat sink temperature thermistor Forecast of cause 10 time flash 12 time flash Continuous flash E: AC Refer to "Error code table (Outdoor unit)" on page 03-4 Protection stop by heat sink temperature ≥ 176 °F (80 °C) during heat sink operation generated 2 times within 24 hours.
3. Troubleshooting without error code 3-1. Indoor unit—No power TROUBLESHOOTING Forecast of cause Check point 1. Check installation condition • • Isn’t the breaker down? Check loose or removed connection cable. -> If abnormal condition is found, correct it by referring to the installation manual or the “DESIGN & TECHNICAL MANUAL”. Check point 2. Check external cause at indoor and outdoor (voltage drop or noise) • • • Instant drop: Check if there is a large load electric apparatus in the same circuit.
3-2. Outdoor unit—No power Power supply failure External cause Electrical components defective Forecast of cause • • Is the circuit breaker on or off? Check loose or removed connection cable. If abnormal condition is found, correct it by referring to the installation manual or the “DESIGN & TECHNICAL MANUAL”. Check point 2. Check external cause at indoor and outdoor (voltage drop or noise) • • • Instant drop: Check if there is a large load electric apparatus in the same circuit.
3-3. No operation (Power is on) Setting/ Connection failure External cause Electrical components defective Forecast of cause TROUBLESHOOTING • • Indoor unit: – Check incorrect wiring between indoor unit and remote controller. – Check if there is an open cable connection. Are these indoor unit, outdoor unit, and remote controller suitable model numbers to connect? -> If there is some abnormal condition, correct it by referring to the installation manual and “DESIGN & TECHNICAL MANUAL”.
3-4. No cooling/No heating Indoor unit error Outdoor unit error Effect by surrounding environment Connection pipe/Connection wire failure Refrigeration cycle failure Forecast of cause • • • • TROUBLESHOOTING TROUBLESHOOTING Check point 1. Check Indoor unit Does Indoor unit fan run in the HIGH mode? Is air filter dirty? Is heat exchanger clogged? Check if energy save function is operated. Check point 2. Check outdoor unit operation • • • • Check if outdoor unit is operating.
NOTES: • Strainer normally does not have temperature difference between inlet and outlet as shown below. Pipe (Out) • If there is a difference like shown below, there is a possibility of inside clogged. In this case, replace the strainer. Pipe (In) 3-4. No cooling/No heating Pipe (Out) - (03-56) - 3.
3-5. Abnormal noise Abnormal installation (indoor unit/outdoor unit) Fan failure (indoor unit/outdoor unit) Compressor failure (outdoor) Forecast of cause Abnormal noise is coming from Outdoor unit. (Check and correct followings) Abnormal noise is coming from Indoor unit.
3-6. Water leaking Erroneous installation Drain hose failure Forecast of cause Diagnosis method when water is spitting out Diagnosis method when water leak occurs • • • • Is main unit installed in stable condition? Is main unit broken or deformed at the time of transportation or maintenance? Is the filter clogged? Is drain hose connection loose? Is there a trap in drain hose? Is drain hose clogged? Check gas pressure and correct it if there was a gas leak.
3-7. Too warm House insulation setting has not been changed. Temperature sensing location has not been changed. Installation location of the wired remote. Function settings have not been changed. Forecast of cause Is insulation level greater than R-13? If no, go to "Check Point 4". Check point 2. Check function setting If insulation level is greater than R-13 set function 95 to 01. NOTE: For details of function setting number 95, refer to "Function settings " in Chapter 5. FIELD →ORKING on page 05-1.
Check point 6. Check the remote controller TROUBLESHOOTING TROUBLESHOOTING Hold down the THERMO SENSOR button until the thermo sensor icon is turned off. If the space is still too warm, go to "Check point 7". End Check point 7. Check function settings Using the table on the right adjust function 31. (Room Temperature Control for indoor unit sensor) NOTE: For details of function setting number 31, refer to "Function settings " in Chapter 5. FIELD →ORKING on page 05-1. End Check point 8.
Check point 10. Location of the remote controller Is the mounting location of the wired remote controller affecting the temperature sensing? (Sunlight on the remote, heat source next to the remote) If no, go to "Check point 12". Move the remote controller. If the space is still too warm, go to "Check point 12". TROUBLESHOOTING TROUBLESHOOTING Check point 11. Location of the remote controller End Check point 8-1.
Check point 9-1. Check function setting Change setting of function 48 (Room temperature sensor switching) to 01. NOTE: For details of function setting number 48, refer to "Function settings " in Chapter 5. FIELD →ORKING on page 05-1. Did this function setting improve temperature control? If the space is still too warm, go to "Check point 10". TROUBLESHOOTING TROUBLESHOOTING Check point 9-2. Check the effects of function setting change End Check point 12.
3-8. Too cool House insulation setting has not been changed. Temperature sensing location has not been changed. Installation location of the wired remote. Function settings have not been changed. Forecast of cause Is insulation level greater than R-13? If no, go to "Check Point 4". Check point 2. Check function setting If insulation level is greater than R-13 set function 95 to 01. NOTE: For details of function setting number 95, refer to "Function settings " in Chapter 5. FIELD →ORKING on page 05-1.
Check point 6. Check the remote controller TROUBLESHOOTING TROUBLESHOOTING Hold down the THERMO SENSOR button until the thermo sensor icon is turned off. If the space is still too cool, go to "Check point 7". End Check point 7. Check function settings Using the table on the right adjust function 30. (Room Temperature Control for indoor unit sensor) NOTE: For details of function setting number 30, refer to "Function settings " in Chapter 5. FIELD →ORKING on page 05-1. End Check point 8.
Check point 10. Location of the remote controller Is the mounting location of the wired remote controller affecting the temperature sensing? (Sunlight on the remote, heat source next to the remote) If no, go to "Check point 12". Move the remote controller. If the space is still too cool, go to "Check point 12". TROUBLESHOOTING TROUBLESHOOTING Check point 11. Location of the remote controller End Check point 8-1.
Check point 9-1. Check function setting Change setting of function 48 (Room temperature sensor switching) to 01. NOTE: For details of function setting number 48, refer to "Function settings " in Chapter 5. FIELD →ORKING on page 05-1. Did this function setting improve temperature control? If the space is still too cool, go to "Check point 10". TROUBLESHOOTING TROUBLESHOOTING Check point 9-2. Check the effects of function setting change End Check point 12.
4. Troubleshooting with error code (For wireless LAN adapter) TROUBLESHOOTING Indicator Operation indicator 1 time flash Timer indicator 8 time flash Indoor unit Economy indicator Continuous flash Error code E: 18 Flashing fast →ireless LAN LED1 (green) adapter LED2 (orange) On →ireless LAN adapter PCB After receiving a signal from the wireless LAN adapter, the same signal has not been received for 15 seconds.
TROUBLESHOOTING Indicator Detective actuator Operation indicator No indication Timer indicator No indication Indoor unit Economy indicator No indication Error code — LED1 (green) Flashing fast →ireless LAN adapter LED2 (orange) Flashing fast →ireless LAN adapter setting →hen the setting button becomes on for consecutive 60 button seconds or more. →ireless LAN adapter PCB Setting button →ireless LAN adapter setting button failure →ireless LAN adapter PCB failure Forecast of cause Check point 1.
TROUBLESHOOTING Indicator Operation indicator No indication Timer indicator No indication Indoor unit Economy indicator No indication Error code — LED1 (green) On →ireless LAN adapter LED2 (orange) Flashing fast →ireless LAN router →hen the not connection between wireless LAN adapter and wireless LAN router.
Check point 4. Replace wireless LAN adapter. If check point 3 do not improve the symptom, replace the wireless LAN adapter and cancel the registration of air conditioner on the mobile app. After replacing the adapter, perform the pairing on the mobile app. End Check point 2-2. Check the transmission state Check the wireless transmission state pf the wireless LAN router (LED status). -> If the wireless transmission from the wireless LAN router has not been outgoing, inquire to the wireless LAN router maker.
TROUBLESHOOTING Indicator Operation indicator 1 time flash Timer indicator 8 time flash Indoor unit Economy indicator Continuous flash Error code E: 18 LED1 (green) Flashing fast →ireless LAN adapter LED2 (orange) Flashing fast →ireless LAN router →hen the external communication error between indoor unit and →LAN adapter and network communication →ireless LAN adapter PCB error between wireless LAN router and →LAN adapter has occurred simultaneously.
Check point 3-1. Turn on the power again of air conditioner. If check point 1 to 2 do not improve the symptom, turn on the power of the air conditioner again and wait for 60 seconds. -> →hen the flashing pattern of the LED 2 (orange) is on, go to "Check point 3-2". -> →hen the flashing pattern of the LED 2 (orange) is flashing fast, go to "Check point 4". • Check any loose or removed connection of between the wireless LAN adapter PCB and controller PCB. -> If there is abnormal condition, correct it.
Indicator TROUBLESHOOTING Detective actuator Forecast of cause Operation indicator 1 time flash Timer indicator 8 time flash Indoor unit Economy indicator Continuous flash Error code E: 18 LED1 (green) Off →ireless LAN adapter LED2 (orange) Off Indoor unit controller PCB →hen the voltage (DC 12 V) does not output from the controller PCB. →ireless LAN adapter PCB Indoor unit controller PCB failure →ireless LAN adapter PCB failure →iring connection failure Check point 1. Check the connection.
Indicator Indoor unit →ireless LAN adapter TROUBLESHOOTING Detective actuator Operation indicator Timer indicator Economy indicator Error code LED1 (green) LED2 (orange) Sleep mode Forecast of cause No indication No indication No indication — Off Off →hen the state in which fly a wireless(SSID) have passed 1 hour. Sleep mode Check point 1. Cheak the sleep mode Press the →ireless LAN adapter setting button the 3 seconds or more.
4-7. Mobile app setting method ¢ Air conditioner deregistration method →hen the wireless LAN adapter is replaced, deregistration of all air conditioner is necessary on the mobile app. 1. Launch the mobile app. 2. Press and hold the registered device name of the air conditioner. 3. If the Unregister button is displayed, tap the button. 4. Tap the ↔es button. 5. Deregstration of the air conditioner is completed. 4-7. Mobile app setting method - (03-75) - 4.
¢ Air conditioner registration pairing method NOTES: • Before starting this setting, wait for 60 seconds or more after the power supply is connected to the air conditioner (via breaker or plug). • Check that the smartphone or tablet PC is linked to the wireless router to be connected to the air conditioner. The setting does not work if the same wireless LAN router is not connected. • The displayed screen design may differ depending on the version of the mobile app.
6. Confirm LED 2 is flashing (On/Off at 2 seconds intervals). Then press and hold the setting button on the wireless LAN adapter for 3 seconds. on/off: 2 sec/2 sec LED 2 lighting will change. (On/Off: 2 sec./2 sec. 2 sec./0.5 sec.) Confirm both of the LED 1 and 2 are on to proceed. 7. Press Register button to start the connection with the wireless LAN router. Register Registration Successful! 2 times Both of the LED 1 and 2 flash 2 times and a message appear when the setup is completed. 4-7.
Manual mode (For Android) 1. Launch the mobile app. FGL air 2. Sign in with your E-mail address and password following the screen on the mobile app. ÛÛÛÛÛÛ TROUBLESHOOTING TROUBLESHOOTING john@fgl.com Sign in 3. Press the + button to add a new air conditioner. + 4. Select manual mode. Button mode Manual mode If both of the LED 1 and 2 are off, push the setting button once. 5. Select the SSID of the air conditioner to be connected.
Manual mode (For iOS) 1. Launch the mobile app. FGL air 2. Sign in with your E-mail address and password following the screen on the mobile app. ÛÛÛÛÛÛ TROUBLESHOOTING TROUBLESHOOTING john@fgl.com Sign in 3. Press the + button to add a new air conditioner. + 4. Select manual mode. Button mode Manual mode If both of the LED 1 and 2 are off, push the setting button once. 5. Select Open →-LAN setting button or activate the wireless LAN by pressing the Home button Setting button →i-Fi button.
5. Service parts information 5-1. Compressor Does not start up Stops soon after starting up Abnormal noise Is there open or loose connection cable? Is there open or loose connection cable? Check if vibration noise by loose bolt or contact noise of piping is happening. Check main PCB, connection of compressor, and winding resistance.
5-2. Inverter compressor Check point 1. Check connection Check terminal connection of compressor (loose or incorrect wiring) S(V) T(W) (WHITE) (BLACK) TROUBLESHOOTING TROUBLESHOOTING • Main PCB R(U) (RED) • Check terminal connection of main PCB (loose or incorrect wiring) Main PCB W400(U) W401(V) W402(W) BLACK WHITE RED Compressor Check point 2. Check winding resistance Check winding resistance of each terminal. Resistance value: 1.
5-3. Outdoor unit Electronic Expansion Valve (EEV) Check point 1. Check connections Check point 2. Check coil of EEV TROUBLESHOOTING TROUBLESHOOTING Check connection of connector. (Loose connector or open cable) NOTE: For details of wiring diagram, refer to "→iring diagrams" in Chapter 2. TECHNICAL DATA AND PARTS LIST on page 02-18. Remove connector, check each winding resistance of coil.
Check point 6. Check strainer Strainer normally does not have temperature difference between inlet and outlet as shown below. TROUBLESHOOTING Pipe (In) • Pipe (Out) If there is a difference like shown below, there is a possibility of inside clogged. In this case, replace the strainer. Pipe (In) 5-3. Outdoor unit Electronic Expansion Valve (EEV) Pipe (Out) - (03-83) - 5.
5-4. Indoor unit fan motor Check point 1. Check rotation of fan Check point 2. Check resistance of indoor fan motor Refer to below. Circuit-test “Vm” and “GND” terminal NOTE: Vm: DC voltage, GND: Earth terminal If they are short-circuited (below 300 kΩ), replace indoor fan motor and controller PCB.
5-5. Outdoor unit fan motor Check point 1. Check rotation of fan Check point 2. Check resistance of outdoor fan motor Refer to below. Circuit-test “Vm” and “GND” terminal NOTE: Vm: DC voltage, GND: Earth terminal If they are short-circuited (below 300 kΩ), replace outdoor fan motor and controller PCB.
5-6. Pressure switch • Type of contact C H Pressure Pressure switch 1 Contact: Short Contact: Open Open Short TROUBLESHOOTING TROUBLESHOOTING • Characteristics of pressure switch 4.2 — 4.05 MPa 3.2 ± 0.15 MPa 18/24 model: P770 5-6. Pressure switch - (03-86) - 5.
5-7. 4-way valve coil (solenoid coil)/4-way valve Check point 1. Check connection Check the connection of connector P60. SOLENOID COIL BLACK 11 TROUBLESHOOTING BLACK 33 TROUBLESHOOTING 4WV P60 • Check Point 2 : Check solenoid coil Remove P60 from PCB and check the resistance value of coil. Resistance Value ≈ 1.97 kΩ If it is Open or abnormal resistance value, replace solenoid coil.
6. Thermistor resistance values 6-1. Indoor unit Temperature °F (°C) Resistance (kΩ) Voltage (V) 14.0 (-10.0) 23.0 (-5.0) 32.0 (0.0) 41.0 (5.0) 50.0 (10.0) 59.0 (15.0) 68.0 (20.0) 77.0 (25.0) 86.0 (30.0) 95.0 (35.0) 104.0 (40.0) 113.0 (45.0) 58.25 44.03 33.62 25.93 20.18 15.84 12.54 10.00 8.04 6.51 5.30 4.35 0.73 0.93 1.15 1.39 1.66 1.94 2.22 2.50 2.77 3.03 3.27 3.49 Temperature °F (°C) Resistance (kΩ) Voltage (V) -22.0 (-30.0) -13.0 (-25.0) -4.0 (-20.0) 5.0 (-15.0) 14.0 (-10.0) 23.0 (-5.0) 32.
6-2. Outdoor unit 6-2. Outdoor unit Temperature °F (°C) Resistance (kΩ) Voltage (V) -22.0 (-30.0) -12.0 (-25.0) -4.0 (-20.0) 5.0 (-15.0) 14.0 (-10.0) 23.0 (-5.0) 32.0 (0.0) 41.0 (5.0) 50.0 (10.0) 59.0 (15.0) 68.0 (20.0) 77.0 (25.0) 86.0 (30.0) 95.0 (35.0) 104.0 (40.0) 113.0 (45.0) 122.0 (50.0) 131.0 (55.0) 140.0 (60.0) 149.0 (65.0) 158.0 (70.0) 167.0 (75.0) 176.0 (80.0) 185.0 (85.0) 194.0 (90.0) 203.0 (95.0) 212.0 (100.0) 221.0 (105.0) 230.0 (110.0) 239.0 (115.0) 248.0 (120.0) 1,013.11 729.09 531.
6-2. Outdoor unit Temperature °F (°C) Resistance (kΩ) Voltage (V) -22.0 (-30.0) -12.0 (-25.0) -4.0 (-20.0) 5.0 (-15.0) 14.0 (-10.0) 23.0 (-5.0) 32.0 (0.0) 41.0 (5.0) 50.0 (10.0) 59.0 (15.0) 68.0 (20.0) 77.0 (25.0) 86.0 (30.0) 95.0 (35.0) 104.0 (40.0) 113.0 (45.0) 122.0 (50.0) 131.0 (55.0) 140.0 (60.0) 149.0 (65.0) 158.0 (70.0) 167.0 (75.0) 176.0 (80.0) 185.0 (85.0) 194.0 (90.0) 203.0 (95.0) 212.0 (100.0) 221.0 (105.0) 230.0 (110.0) 239.0 (115.0) 248.0 (120.0) 1,013.11 729.09 531.56 392.31 292.91 221.
Temperature °F (°C) Resistance (kΩ) Voltage (V) -22.0 (-30.0) -12.0 (-25.0) -4.0 (-20.0) 5.0 (-15.0) 14.0 (-10.0) 23.0 (-5.0) 32.0 (0.0) 41.0 (5.0) 50.0 (10.0) 59.0 (15.0) 68.0 (20.0) 77.0 (25.0) 86.0 (30.0) 95.0 (35.0) 104.0 (40.0) 113.0 (45.0) 122.0 (50.0) 131.0 (55.0) 140.0 (60.0) 149.0 (65.0) 158.0 (70.0) 167.0 (75.0) 176.0 (80.0) 95.57 68.89 50.31 37.19 27.81 21.02 16.05 12.38 9.63 7.56 5.98 4.77 3.84 3.11 2.53 2.08 1.71 1.42 1.19 1.00 0.84 0.71 0.61 0.24 0.32 0.43 0.57 0.73 0.92 1.14 1.39 1.65 1.
6-2. Outdoor unit Temperature °F (°C) Resistance (kΩ) Voltage (V) -22.0 (-30.0) -12.0 (-25.0) -4.0 (-20.0) 5.0 (-15.0) 14.0 (-10.0) 23.0 (-5.0) 32.0 (0.0) 41.0 (5.0) 50.0 (10.0) 59.0 (15.0) 68.0 (20.0) 77.0 (25.0) 86.0 (30.0) 95.0 (35.0) 104.0 (40.0) 113.0 (45.0) 122.0 (50.0) 131.0 (55.0) 224.33 159.71 115.24 84.21 62.28 46.58 35.21 26.88 20.72 16.12 12.64 10.00 7.97 6.40 5.18 4.21 3.45 2.85 0.73 0.97 1.25 1.56 1.90 2.26 2.61 2.94 3.25 3.52 3.76 3.97 4.14 4.28 4.41 4.51 4.59 4.65 - (03-92) - 6.
4. CONTROL AND FUNCTIONS 2021.11.
CONTENTS 4. CONTROL AND FUNCTIONS 1. Rotation number control of compressor...................................................04-1 1-1. Cooling operation ...........................................................................................................04-1 1-2. Heating operation ...........................................................................................................04-3 1-3. Dry operation ............................................................................................
CONTENTS (continued) 8-6. Low outdoor temperature protection.............................................................................04-33 8-7. High temperature and high pressure release control ....................................................
1. Rotation number control of compressor 1-1. Cooling operation • Rotation number of compressor range Unit: rps 1-1. Cooling operation Model name Minimum frequency Maximum frequency ASUH18LMAS ASUH24LMAS 10 10 63 80 - (04-1) - 1.
• Limit of maximum speed based on outdoor temperature Outdoor temperature rises Outdoor temperature drops 86.0°F (30°C) 66.2°F (19°C) 50.0°F (10°C) CONTROL AND FUNCTIONS 32.0°F (0°C) A zone 96.8°F (36°C) B zone 89.6°F (32°C) C zone 69.8°F (21°C) D zone 53.6°F (12°C) E zone 35.6°F (2°C) F zone Unit: rps Model name ASUH18LMAS ASUH24LMAS 1-1.
1-2. Heating operation A sensor (room temperature thermistor) built in indoor unit body will usually perceive difference or variation between setting temperature and present room temperature, and controls operation rotation number of compressor. • If the room temperature is 11 °F (6.0 °C) lower than a set temperature, the operation rotation number of compressor will attain to maximum performance. • If the room temperature is 2 °F (1.0 °C) higher than a set temperature, the compressor will be stopped.
1-4. Rotation number of compressor at normal start-up Compressor frequency soon after starting is controlled as below. Frequency VI Frequency V Frequency IV Frequency III Frequency II Frequency I CONTROL AND FUNCTIONS Frequency (rps) Time (sec) I 35 1 60 1-4. Rotation number of compressor at normal start-up II 52 2 140 Time 2 Time 3 III 64 3 170 - (04-4) - Time 4 IV 71 4 200 Time 5 Time 6 V 89 5 350 VI 97 6 410 1.
1-5. Rotation number of compressor limitation by outdoor temperature Model name AOUH18LMAS1 AOUH24LMAS1 1-5. Rotation number of compressor limitation by outdoor temperature 107.6°F (42°C) K zone 100.4°F (38°C) J zone 87.8°F (31°C) I zone 69.8°F (21°C) H zone 55.4°F (13°C) G zone 44.6°F (7°C) F zone 35.6°F (2°C) E zone 23.0°F (-5°C) D zone 14.0°F (-10°C) C zone 5.
68.0°F (20°C) G zone 44.6°F (7°C) F zone 35.6°F (2°C) E zone 19.4°F (-7°C) D zone 14.0°F (-10°C) C zone 5.0°F (-15°C) B zone A zone Model name Outdoor temperature zone Limitation of compressor frequency AOUH18LMAS1 AOUH24LMAS1 A zone B zone C zone D zone E zone F zone G zone 71 rps 53 rps 44 rps 39 rps 29 rps 23 rps 21 rps 1-5. Rotation number of compressor limitation by outdoor temperature - (04-6) - 1.
2. Auto changeover operation →hen the air conditioner is set to AUTO mode by remote controller, operation starts in the optimum mode from among heating, cooling, dry and monitoring modes. During operation, the optimum mode is automatically switched in accordance with temperature changes. The temperature can be set between 64.4°F (18°C) and 86.0°F (30°C) in 1.8°F (1.0°C) steps. Room temperature Operation mode Tr > Ts + 3.6°F (2°C) Ts + 3.6°F (2°C) ≥ Tr ≥ Ts - 3.6°F (2°C) Tr < Ts - 3.
Operation flow chart Start Ts: Setting temperarure Monitor mode Room temp. > Ts+3.6°F(2°C)? Yes No Room temp. < Ts-3.
3. Fan control Tr: Room temperature Ts: Setting temperature 3-1. Indoor fan control ¢ Fan speed Indoor fan speed is defined as below.
¢ Dry operation During dry operation, fan speed setting can not be changed as shown in “Fan speed” above. ¢ Heating operation Switch the airflow AUTO, and the indoor fan motor will run according to a room temperature, as below. On the other hand, if switched in HIGH—QUIET, the indoor motor will run at a constant airflow of HEAT operation modes QUIET, LO→, MED, HIGH as shown in “Fan speed” above.
• Powerful operation Indoor heat exchanger temperature rises Indoor heat exchanger temperature drops POWERFUL 107.6°F (42°C) HIGH 98.6°F (37°C) LOW 93.2°F (34°C) Cool air prevention 89.6°F (32°C) 102.2°F (39°C) 98.6°F (37°C) 86.0°F (30°C) 82.4°F (28°C) S-LOW 7 minutes later: Indoor heat exchanger temperature rises CONTROL AND FUNCTIONS 107.6°F (42°C) 102.2°F (39°C) 98.6°F (37°C) 86.0°F (30°C) HIGH 98.6°F (37°C) LOW 93.2°F (34°C) LOW 89.6°F (32°C) LOW 82.
3-2. Outdoor fan control ¢ Outdoor fan motor This outdoor unit has a DC fan motor. (Control method is different between AC and DC motors.) ¢ Fan speed AOUH18LMAS1 Fan speed is defined by outdoor temperature and compressor frequency.
AOUH24LMAS1 Fan speed is defined by outdoor temperature and compressor frequency. Fan step Cooling or dry Heating 13 12 11 10 9 8 7 6 5 4 3 2 1 S-HIGH 830 830 740 700 650 570 570 540 510 480 480 400 200 — — — — 830 740 690 620 590 480 410 340 270 200 830 • →hen the compressor frequency increases, the outdoor fan speed also changes to the higher speed. • →hen the compressor frequency decreases, the outdoor fan speed also changes to the lower speed.
4. Louver control 4-1. Vertical airflow direction louver control Each time the button is pressed, the air direction range will change as below: Side view 1 2 3 4 5 1 2 6 3 4 5 6 Operation mode Cooling/Dry Heating ASUH18LMAS ASUH24LMAS Horizontal flow 1 Downward flow 6 Downward flow 5 • During AUTO operation, for the first a few minutes after beginning operation, airflow will be horizontal 1; the air direction cannot be adjusted during this period.
4-3. Swing operation • To select vertical airflow swing operation →hen the swing signal is received, the vertical airflow direction louver starts to swing. – Swinging range • Cooling mode/dry mode/fan mode (1 to 3): 1 4 • Heating mode/fan mode (4 to 6): 3 6 – →hen the indoor fan is S-LO→ or stop mode, the swing operation is interrupted and it stops at either upper end or bottom end.
5. Timer operation control 5-1. Wireless remote control On/Off timer Program timer Sleep timer Weekly timer ○ ○ ○ — ¢ On/Off timer • Off timer: →hen the clock reaches the set timer, the air conditioner will be turned off. Operation mode Stop mode • On timer: →hen the clock reaches the set timer, the air conditioner will be turned on. Operation mode Stop mode Set time of timer ¢ Program timer • The program timer allows the off timer and the on timer to be used in combination one time.
¢ Sleep timer If the sleep timer is set, the room temperature is monitored and the operation is stopped automatically. If the operation mode or the set temperature is change after the sleep timer is set, the operation is continued according to the changed setting of the sleep timer from that time on. • In the cooling operation mode →hen the sleep timer is set, the setting temperature is increased 1.8°F (1°C). It increases the setting temperature another 1.8°F (1°C) after 1 hour.
5-2. Wired remote control On/Off timer Program timer Sleep timer Weekly timer Temperature set back timer ○ ○ ○ ○ ○ ¢ On/Off timer • Off timer: →hen the clock reaches the set timer, the air conditioner will be turned off. Operation mode Stop mode Set time of timer • On timer: →hen the clock reaches the set timer, the air conditioner will be turned on.
¢ Sleep timer If the sleep timer is set, the room temperature is monitored and the operation is stopped automatically. If the operation mode or the set temperature is change after the sleep timer is set, the operation is continued according to the changed setting of the sleep timer from that time on. • In the cooling operation mode →hen the sleep timer is set, the setting temperature is increased 1.8°F (1°C). It increases the setting temperature another 1.8°F (1°C) after 1 hour.
¢ Temperature set back timer • The SET BACK timer only changes the set temperature for 7 days, it cannot be used to start or stop air conditioner operation. • The SET BACK timer can be set to operate up to two times per day but only one temperature setting can be used. • During COOLING/DR↔ mode, the air conditioner will operate at a minimum of 64°F (18°C) even if the SET BACK temperature is set to 63°F (17°C) or lower. Case of SET BACK timer on the Cooling operation.
6. Defrost operation control Tn: Outdoor unit heat exchanger temperature Ta: Outdoor temperature Tn10: Temperature at 10 minutes after compressor start Tnb: Temperature before 5 minutes • Triggering condition Compressor integrating operation time Less than 17 min. 17 to 57 min. More than 57 min. Condition Does not operate Tn ≤ 15.8°F (-9°C) and Tn-Ta ≥ 9.0°F (5°C) Tn ≤ 23.0°F (-5°C) CONTROL AND FUNCTIONS – 2nd time and after Compressor integrating operation time Less than 35 min.
6-1. Defrost operation in heating operation stopped If the outdoor unit is frosted when stopping the heating operation, it stops after performing the automatic defrosting operation. In this time, if the indoor unit operation lamp flashes slowly (6 sec on/2 sec off), the outdoor unit allow the heat exchanger to defrost, and then stop.
7. Various control 7-1. Auto restart →hen the power was interrupted by a power failure etc. during operation, the operation contents at that time are memorized and when the power is recovered, operation is automatically started with the memorized operation contents.
7-3. Forced cooling operation The outdoor unit may not operate depending on the room temperature. →hen FORCED COOLING OPERATION button is pressed more than 10 seconds, forced cooling operation starts as shown in the table below. Auto changeover AUTO Continuous (no timer setting available) 75.2°F (24°C) Standard According to memory position Off Off Off • During the forced cooling operation, it operates regardless of room temperature sensor.
7-6. POWERFUL operation The PO→ERFUL operation starts by pressing PO→ERFUL button on the remote controller. The indoor unit and outdoor unit operate at maximum power as shown in the table below. ASUH18LMAS Compressor frequency Fan mode Vertical airflow direction louver setting ASUH24LMAS Maximum PO→ERFUL Cooling Dry Heating 3 6 5 7-7. Fresh air control The fan motor for Fresh Air is operated in synchronization with the indoor fan operation as below.
7-9. External electrical heater control The external electrical heater is operated as below. When the room temperature rises Ts: Setting temperature Heater : Off Ts -1.8°F (Ts -1°C) Ts -5.4°F (Ts -3°C) Heater : On Ts -21.6°F (Ts -12°C) Heater : Off Ts -18.0°F (Ts -10°C) NOTES: • →hen the compressor stop, external electric heater is off. • It operates only in heating mode and when the indoor fan operates. (However, S-LO→ is excluded.) 7-10.
7-13. Peak cut operation The current value is limited to reduce the power consumption by external input. Peak cut level Peak cut for rated capacity Level 1 Forced thermostat off Level 2 Level 3 Level 4 50% 75% 100% NOTES: • During defrost operation, peak cut operation becomes invalid. • Even during the peak cut operation, the operations of current overload, economy, and low noise are effective and the outdoor unit operates by lowest current of them.
Available Sensor ID Unit 057 070 080 081 082 083 084 090 Limit switch 3 (For left filter) On/Off Current sensor Indoor unit total energized hours Total filtering hours Indoor unit fan total operation hours Indoor unit fan 2 total operation hours Indoor unit fan 3 total operation hours Temperature sensor 08: On/Off 09: A 11: h 11: h 11: h 11: h 11: h 12: % 00 095 Presence or absence detected by human sensor 00: — 00 140 Operation or Stop (External input) 00: — 00 141 Emergency stop (External in
Available Sensor ID Item Unit 00 160 External heater On/Off (External output) 00: — 00 161 Heating operation status (External output) 00: — 00 162 External output command by remote controller (External output) 00: — 00 163 Set-point temp.
Available Sensor ID 089 090 100 110 01 111 01 112 01 113 01 114 01 115 01 145 Item Unit Base heater output On/Off Belt heater output On/Off Operating current Outdoor unit total power-on hours Compressor total heating operation hours Compressor total cooling operation hours Compressor total operation hours Outdoor unit fan 1 total operation hours Outdoor unit fan 2 total operating hours Outdoor low noise input (External input) 08: On/Off 08: On/Off 09: A 11: h 11: h 11: h 11: h 11: h 11: h 00
8. Various protections 8-1. Discharge gas temperature over-rise prevention control Trigger condition Compressor frequency Release condition Compressor protection temperature 219.2°F (104°C) -14 rps/120 seconds 213.8°F (101°C) 230.0°F (110°C) CONTROL AND FUNCTIONS CONTROL AND FUNCTIONS The discharge gas temperature sensor (discharge thermistor: outdoor unit side) detects the discharge gas temperature.
8-3. Current release control The rotation number of compressor is controlled so that the outdoor unit input current does not exceeds current limit value set according to the outdoor temperature. The rotation number of compressor returns according to the operation mode, when the current becomes lower than the release value. Operation mode Cooling CONTROL AND FUNCTIONS Heating Outdoor temp. (Ta) Trigger condition Release condition 125.6 °F (52 °C) ≤ Ta 122.0 °F (50 °C) ≤ Ta < 125.6 °F (52 °C) Ta < 122.
8-6. Low outdoor temperature protection →hen the outdoor temperature sensor detects lower than the trigger condition below, the compressor is stopped. Operation mode Trigger condition Release condition Cooling/Dry -4°F (-20°C) 5°F (-15°C) 8-7. High temperature and high pressure release control CONTROL AND FUNCTIONS Indoor unit heat exchanger temperature rises Indoor unit heat exchanger temperature drops Zone A AB AB: 149.0°F (65°C) BC: 143.6°F (62°C) CD: 140.
CONTROL AND FUNCTIONS CONTROL AND FUNCTIONS 8-7. High temperature and high pressure release control - (04-34) - 8.
5. FILED WORKING 2021.11.
CONTENTS 5. FILED WORKING 1. Function settings .......................................................................................05-1 1-1. Function settings by using remote controller ..................................................................05-1 1-2. Custom code setting for wireless remote controller ......................................................05-10 1-3. Switching the temperature unit of remote controller......................................................05-11 2.
1. Function settings To adjust the functions of this product according to the installation environment, various types of function settings are available. NOTE: Incorrect settings can cause a product malfunction. 1-1. Function settings by using remote controller Some function settings can be changed on the remote controller. After confirming the setting procedure and the content of each function setting, select appropriate functions for your installation environment.
NOTES: • The air conditioner custom code is set to prior to shipment. FIELD WORKING FIELD WORKING • If you do not know the air conditioner custom code setting, try each of the custom codes ( ) until you find the code that operates the air conditioner. 1-1. Function settings by using remote controller - (05-2) - 1.
¢ Contents of function setting Each function setting listed in this section is adjustable in accordance with the installation environment. NOTE: Setting will not be changed if invalid numbers or setting values are selected.
2) Room temperature control for indoor unit sensor NOTE: Before performing this setting, refer to Function 95. Depending on the installed environment, correction of the room temperature sensor may be required. Select the appropriate control setting according to the installed environment. The temperature of the room temperature sensor is corrected as follows: Corrected temp. = Temp. of the room temp. sensor - Correction temp. value Example of correction: →hen the temperature of the room temp.
3) Room temperature control for wired remote controller sensor NOTE: Before performing this setting, refer to Function 95. Depending on the installed environment, correction of the wire remote temperature sensor may be required. Select the appropriate control setting according to the installed environment. To change this setting, set Function 42 to “Both“ (01). Ensure that the Thermo Sensor icon is displayed on the remote controller screen.
6) Remote controller custom code (Only for wireless remote controller) The indoor unit custom code can be changed. Select the appropriate custom code. Function number Setting value Setting description Factory setting A B C D ♦ 44 00 01 02 03 Function number Setting value Setting description Factory setting Operation/Stop mode 1 (R.C. enabled) (Setting prohibited) Forced stop mode Operation/Stop mode 2 (R.C. disabled) ♦ 46 00 01 02 03 8) Room temperature sensor switching (Aux.
10) Switching functions for external output terminal Functions of the external output terminal can be switched. For details, refer to “External input and output”.
13) Outdoor temperature zone boundary temperature A Setting required if changing of the outdoor temperature setting for heat pump prohibition zone is required when auxiliary heater control by outdoor temperature 1 and 2 are performed on the indoor unit. For details, refer to “External heater output” in Chapter 2-4. "Details of function" on page 0519. Function number Setting value Setting description Factory setting -4.0 °F (-20 °C) -0.4 °F (-18 °C) 3.2 °F (-16 °C) 6.8 °F (-14 °C) 10.4 °F (-12 °C) 14.
16) Heat pump backup setting Enables or disables the heat pump backup instruction from the outdoor unit. This function will be usable provided that the corresponding outdoor unit is connected. Function number Setting value Setting description Factory setting 72 00 01 Disable Enable ♦ 17) Emergency heat for external output terminal Enables or disables emergency heat input.
1-2. Custom code setting for wireless remote controller To interconnect the air conditioner and the wireless remote controller, assignment of the custom code for the wireless remote controller is required. NOTE: Air conditioner cannot receive a signal if the air conditioner has not been set for the custom code.
1-3. Switching the temperature unit of remote controller Displayed temperature unit on the remote controller LCD can be switched between °F (Fahrenheit) and °C (Celsius). To change temperature unit, do as follows: 1. FIELD WORKING FIELD WORKING 2. 3. Press the TEMP. (Up) button ( ) for at least 5 seconds to display the current temperature unit. (Factory setting: °F) Press the TEMP. ( ) ( ) buttons to switch the temperature unit between °F and °C.
2. External input and output External input and output PCB Indoor unit PCB CN65 (Ext. in/out PCB) CN47 (Ext. out) CN46 (Ext.
2-1. External input →ith using external input function, some functions on this product can be controlled from an external device. • “Operation/Stop” mode or "Forced stop" mode can be selected with function setting of indoor unit. • A twisted pair cable (22A→G) should be used. Maximum length of cable is 492 ft (150 m). • The wire connection should be separate from the power cable line. ¢ Indoor unit Indoor unit functions such as Operation/Stop can be done by using indoor unit connectors.
¢ External input and output PCB The indoor unit Operation/Stop can be set by using the input connector on the PCB. • Input select: Use either one of these types of connectors according to the application. (Both types of connectors cannot be used simultaneously.) – Dry contact In case of internal power supply, set the slide switch of S→301 to "NON VOL" side.
2-2. External output Use an external output cable with appropriate external dimension, depending on the number of cables to be installed. ¢ Indoor unit • • • • A twisted pair cable (22A→G) should be used. Maximum length of cable is 82 ft (25 m). Output voltage: High DC 12 V ± 2 V, Low 0 V. Permissible current: 50 mA For details, refer to "Combination of external input and output" on page 05-17.
¢ External input and output PCB • • • • A twisted pair cable (22A→G) should be used. Maximum length of cable is 82 ft (25 m). Output voltage: High DC 12 V±2 V, Low 0 V. Permissible current: 50 mA For details, refer to "Combination of external input and output" on page 05-17. • When indicator or other components are connected directly: Example: Rotary S→ on External input and output PCB is set to “1”.
2-3. Combination of external input and output By combining the function setting of the indoor unit and rotary switch setting of the External input and output PCB, you can select various combinations of functions.
External output Rotary SW Indoor unit FIELD WORKING External input and output PCB CN47 1 CN310 2 CN311 0-1 60-00 1 Operation/Stop Operation/Stop Error status 0-2 60-00 2 Operation/Stop Error status 1 60-01 3 2 60-02 4 3 60-03 5 4 60-04 6 5 60-05 7 6 60-06 8 7 60-07 9 8 60-08 A 9 60-09 B 10 60-10 C 11 60-11 D 12 60-12 D Cooling thermostat On Cooling thermostat On Cooling thermostat On Cooling thermostat On Heating thermostat On Cooling high/low output O
2-4.
• When function setting is “Forced stop” mode – In the case of “Edge” input: Function setting Rotary SW on External input and output PCB 46-02 1 External input External input and output PCB Input signal Off On CN313 On Off Command Forced stop Normal On CN313 Off Forced stop Normal Indoor unit Operation Stop On Remote controller On On – In the case of “Pulse” input: 46-02 1 External input External input and output PCB Input signal Command Pulse Pulse Forced stop Normal CN313 CN314 F
• When function setting is “Operation/Stop” mode 2 – In the case of “Edge” input: Function setting Rotary SW on External input and output PCB 46-03 1 External input External input and output PCB Input signal CN313 Off On On Off Command Operation Stop (R.C. disabled) On CN313 Off Operation Indoor unit Stop (R.C.
• Forced thermostat off function Rotary SW on Function setting / External input and output PCB 60-00 60-09 60-10 60-11 60-12 / / / / / 2 B C D D Input signal External input External input and output PCB CN313 Command Off On Thermostat off On Off Normal operation On Off Input Compressor On Off Room temp. Set temp.
• Error status Rotary SW on Function setting / External input and output PCB 60-09 / B Output of indoor unit 60-00 / 2 60-00 60-09 60-10 60-11 60-12 / / / / / Output signal External output CN47 CN310 1 B C D D External input and output PCB CN311 CN312 Command Off On Off On On Off On Off Error Normal Error Normal Off On Error On Off On Off On Off Normal Error Normal The output is ON when an error is generated for the indoor unit.
• External heater output Rotary SW on Function setting / External input and output PCB Output signal External output 60-11 / D Output of indoor unit CN47 60-00 / 2 60-09 / B 60-10 / C External input and output PCB CN312 Command Off On On Off Heater on Heater off Off On Heater on On Off Heater off • Set point attainment status NOTE: This function is valid only when function setting 96 is set to “Enable” (01).
¢ External heater output FIELD WORKING Control Auxiliary heater control 1 Auxiliary heater control 2 Heat pump prohibition control Auxiliary heater control by outdoor temperature 1 Auxiliary heater control by outdoor temperature 2 Auxiliary heater control by outdoor temperature 3 Auxiliary heat pump control Auxiliary heat pump control by outdoor temperature 1 Auxiliary heat pump control by outdoor temperature 2 Auxiliary heat pump control by outdoor temperature 3 Primary heater Auxiliary heater Indoor
WARNING • Design and install external heater appropriately with considering its protection. • Inappropriate designing and installation of external heater may cause a fire by emitted heat from the external heater. • Fujitsu General Ltd. is not responsible for inappropriate designing or installation of external heating device. Auxiliary heater control 1 Operation Heater on Heater off Condition Heater is on as shown in following diagram of heating temperature.
Heat pump prohibition control Perform heating by external heater only. Indoor unit is continuous thermostat off. Operation Heater on Heater off Condition Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. • Other than heating mode • Error occurred • Forced thermostat off • Temperature of heater on (Thon): Adjustable by function number 62 (Operating temperature switching of external heaters).
Auxiliary heater control by outdoor temperature 1 This control selects heat pump or external heater according to the outdoor temperature. →hen outdoor temperature is high, the heating is performed by using heat pump only. Operation Heater on Heater off Condition Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature.
• Operation status 46.4°F (8°C) Outdoor temperature (Factory setting) 42.8°F (6°C) -0.4°F (-18°C) -4°F (-20°C) Heat pump prohibition zone Outdoor temperature zone * Combination zone Heat pump only zone On Comp. On/Off Off 12 V Heater Fan 0V On Off * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. FIELD WORKING FIELD WORKING NOTE: In following operations, compressor will be on in heat pump prohibition zone.
Auxiliary heater control by outdoor temperature 2 This control selects heat pump or external heater according to the outdoor temperature. Even when outdoor temperature is high, the heating is performed by using both of heat pump and external heater. Operation Heater on Heater off Condition Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature.
• Operation status 46.4°F (8°C) Outdoor temperature (Factory setting) 42.8°F (6°C) -0.4°F (-18°C) -4°F (-20°C) Heat pump prohibition zone Outdoor temperature zone * Combination zone On Comp. On/Off Off 12 V Heater Fan 0V On Off * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. FIELD WORKING FIELD WORKING NOTE: In following operations, compressor will be on in heat pump prohibition zone. • Other than heating • Test run 2-4.
Auxiliary heater control by outdoor temperature 3 This control selects heat pump or external heater according to the outdoor temperature. Even when outdoor temperature is high, the heating is performed by using both of heat pump and external heater. Operation Heater on Heater off Condition Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature.
• Operation status Heat pump only zone 46.4°F (8°C) Outdoor temperature (Factory setting) 42.8°F (6°C) -0.4°F (-18°C) -4°F (-20°C) Combination zone Outdoor temperature zone * Comp. On/Off Heater Fan On Off 12 V 0V On Off * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. FIELD WORKING FIELD WORKING NOTE: In following operations, compressor will be on in heat pump prohibition zone. • Other than heating • Test run 2-4.
Auxiliary heat pump control • External heater output Operation Heater on Heater off Condition Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. • Other than heating mode • Error occurred • Forced thermostat off – Temperature of heater on (Thon): Set temperature (Ts) - 0.9 °F (- 0.5 °C) – Temperature of heater off: Set temperature (Ts) + 0.9 °F (+ 0.5 °C) Tr-Ts Off Tr: Room temperature Tr-Ts (=Thon) ≤ -0.9°F (-0.
Auxiliary heat pump control by outdoor temperature 1 • External heater output Operation Heater on Heater off Condition Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. • Other than heating mode • Error occurred • Forced thermostat off – Temperature of heater on (Thon): Set temperature (Ts) - 0.9 °F (- 0.5 °C) – Temperature of heater off: Set temperature (Ts) + 0.9 °F (+ 0.
• Operation status 46.4°F (8°C) Outdoor temperature (Factory setting) 42.8°F (6°C) -0.4°F (-18°C) -4°F (-20°C) Heat pump prohibition zone Outdoor temperature zone * Combination zone On Comp. On/Off Off 12 V Heater Fan 0V On Off * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. FIELD WORKING FIELD WORKING NOTE: In following operations, compressor will be on in heat pump prohibition zone. • Other than heating • Test run 2-4.
Auxiliary heat pump control by outdoor temperature 2 • External heater output Operation Heater on Heater off Condition Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. • Other than heating mode • Error occurred • Forced thermostat off – Temperature of heater on (Thon): Set temperature (Ts) - 0.9 °F (- 0.5 °C) – Temperature of heater off: Set temperature (Ts) + 0.9 °F (+ 0.
• Operation status Heat pump prohibition zone 46.4°F (8°C) Outdoor temperature (Factory setting) 42.8°F (6°C) -0.4°F (-18°C) -4°F (-20°C) Combination zone Outdoor temperature zone * Comp. On/Off Heater Fan On Off 12 V 0V On Off * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. FIELD WORKING FIELD WORKING NOTE: In following operations, compressor will be on in heat pump prohibition zone. • Other than heating • Test run 2-4.
Auxiliary heat pump control by outdoor temperature 3 • External heater output Operation Heater on Heater off Condition Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. • Other than heating mode • Error occurred • Forced thermostat off – Temperature of heater on (Thon): Set temperature (Ts) - 0.9 °F (- 0.5 °C) – Temperature of heater off: Set temperature (Ts) + 0.9 °F (+ 0.
• Operation status Heat pump prohibition zone 46.4°F (8°C) Outdoor temperature (Factory setting) 42.8°F (6°C) -0.4°F (-18°C) -4°F (-20°C) Combination zone Outdoor temperature zone * Comp. On/Off Heater Fan On Off 12 V 0V On Off * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. FIELD WORKING FIELD WORKING NOTE: In following operations, compressor will be on in heat pump prohibition zone. • Other than heating • Test run 2-4.
¢ Heating thermostat on for humidifier Indoor unit Situation Function setting External output Mode Heating thermostat on no.
