This site is aimed at professional installers and service technicians, and gives you easy access to alarm codes and technical data sheets for Airwell products.

YDAX-140H-09T35

7SP063175

Display
Alarm code meaningIndoor units mode conflict(match with multi outdoor unit)
DisplayEC 07
Alarm code meaningNo fan motor feedback on outdoor unit board (DC fan motor only)
DisplayEC 0d
Alarm code meaningSee alarm code on outdoor unit
DisplayEC 51
Alarm code meaningOutdoor unit EEPROM parameter error
DisplayEC 52
Alarm code meaningOutdoor exchanger temperature sensor T3 disconnected or short circuited
DisplayEC 53
Alarm code meaningOutdoor ambiant temperature sensor T4 disconnected or short circuited
DisplayEC 54
Alarm code meaningDischarge temperature sensor Tp disconnected or short circuited
DisplayEC 55
Alarm code meaningIGBT temperature sensor TH is in open circuit or has short circuited
DisplayEC 71
Alarm code meaningDC fan motor of outdoor unit overcurrent
DisplayEC 72
Alarm code meaningMissing phase on fan motor
DisplayEC 73
Alarm code meaningZero speed failure of outdoor unit DC fan
DisplayEC 74
Alarm code meaningOutdoor external fan current sampling bias fault
DisplayEC 75
Alarm code meaningOutdoor external fan module protection/hardware overcurrent protection
DisplayEH 00 / EH 0A
Alarm code meaningEEPROM empty or damaged
DisplayEH 03
Alarm code meaningFaulty indoor fan motor
DisplayEH 0E
Alarm code meaningWater flow detector in high position or disconnected
DisplayEH 30
Alarm code meaningParameters error of indoor external fan
DisplayEH 35
Alarm code meaningPhase failure of indoor external fan
DisplayEH 36
Alarm code meaningIndoor external fan current sampling bias fault
DisplayEH 37
Alarm code meaningIndoor external fan zero speed failure
DisplayEH 38
Alarm code meaningIndoor external fan stall failure
DisplayEH 39
Alarm code meaningOut of step failure of indoor external fan
DisplayEH 3A
Alarm code meaningLow voltage protection of indoor external fan DC bus
DisplayEH 3b
Alarm code meaningIndoor external fan DC bus voltage is too high fault
DisplayEH 3E
Alarm code meaningDéfaut de surintensité du ventilateur externe intérieur
DisplayEH 60
Alarm code meaningIndoor ambiant temperature sensor T1 disconnected or short circuited
DisplayEH 61
Alarm code meaningIndoor exchanger temperature sensor T2 disconnected or short circuited
DisplayEH bA
Alarm code meaningCommunication error between indoor unit and indoor external fan module
DisplayEH EF
Alarm code meaningIndoor external fan module protection/hardware overcurrent protection
DisplayEL 01
Alarm code meaningNo communication between indoor and outdoor unit
DisplayEL 0C
Alarm code meaningRefrigerant Leakage
DisplayLC 01
Alarm code meaningFrequency limit caused by T3
DisplayLC 02
Alarm code meaningFrequency limit caused by TP
DisplayLC 03
Alarm code meaningFrequency limit caused by current
DisplayLC 05
Alarm code meaningFrequency limit caused by voltage
DisplayLC 06
Alarm code meaningFrequency limit caused by PFC
DisplayLC 30
Alarm code meaningFrequency limit caused by high pressure
DisplayLC 31
Alarm code meaningFrequency limit caused by low pressure
DisplayLH 00
Alarm code meaningFrequency limit caused by T2
DisplayLH 07
Alarm code meaningFrequency limit caused by remote controller
DisplayLH 30
Alarm code meaningIndoor external fan current limit
DisplayLH 31
Alarm code meaningIndoor external fan voltage limit
DisplayPC 00
Alarm code meaningPower board (IPM) or protection again high current
DisplayPC 02
Alarm code meaningHigh temperature protection on power board or compressor
DisplayPC 03
Alarm code meaningHigh or low pressure protection
DisplayPC 06
Alarm code meaningcompressor discharge temperature too high protection
DisplayPC 0A
Alarm code meaningCondenser high temperature protection
DisplayPC 0F
Alarm code meaningPFC module protection
DisplayPC 0L
Alarm code meaningOutdoor low ambient temperature protection
DisplayPC 10
Alarm code meaningLow voltage protection
DisplayPC 11
Alarm code meaningOver voltage protection
DisplayPC 12
Alarm code meaningDC voltage protection
DisplayPC 30
Alarm code meaningHigh pressure protection
DisplayPC 31
Alarm code meaningLow pressure protection
DisplayPC 40
Alarm code meaningNo communication between main and inverter board
DisplayPC 41
Alarm code meaningCurrent Input detection protection
DisplayPC 42
Alarm code meaningCompressor start error
DisplayPC 43
Alarm code meaningLack of phase (3 phase) protection
DisplayPC 44
Alarm code meaningZero crossing protection
DisplayPC 45
Alarm code meaningOutdoor unit IR chip drive failure
DisplayPC 46
Alarm code meaningCompressor out of control
DisplayPC 49
Alarm code meaningCompressor over current
DisplayPC08
Alarm code meaningOutdoor current protection
DisplayPH 09
Alarm code meaningAnti-cold air in heating mode
DisplayPH 0C
Alarm code meaningIndoor unit humidity sensor failure
DisplayPH 90
Alarm code meaningEvaporator coil temperature over high protection
DisplayPH 91
Alarm code meaningEvaporator coil temperature over low Protection