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.

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AW-WHPMA26-H93

7HP061087

Technical data
Alarm code
DisplaybH
Alarm code meaningFaulty PED board
DisplayC7
Alarm code meaningTransducer module temperature protection too high protection
DisplayE0
Alarm code meaningNo water flow (E8 alarm code appeared 3 times)
DisplayE1
Alarm code meaningPhase reversal (3-phase 400V/3/50 models)
DisplayE2
Alarm code meaningNo communication between hydraulic and remote controller
DisplayE3
Alarm code meaningPlate heat exchanger outlet temperature sensor T1 disconnected or short-circuited
DisplayE4
Alarm code meaningDomestic Hot Watern temperature sensor T5 disconnected or short circuited
DisplayE5
Alarm code meaningOutlet air exchanger air temperature sensor t3 disconnected or short-circuited
DisplayE6
Alarm code meaningIndoor ambiant temperature sensor T4 disconnected or short circuited
DisplayE7
Alarm code meaningWater tank temperature sensor disconnected Tbt1 or short circuited
DisplayE8
Alarm code meaningWater flow missing during 3 minutes continuously
DisplayE9
Alarm code meaningSuction temperature sensor Th disconnected or short circuited
DisplayEA
Alarm code meaningDischarge temperature sensor Tp disconnected or short circuited
DisplayEb
Alarm code meaningSolar temperature sensor Tsolar disconnected or short circuited
DisplayEc
Alarm code meaningIndoor exchanger temperature sensor T2B disconnected or short circuited (case multisplit installation)
DisplayEd
Alarm code meaningWater exchanger inlet temperature sensor Tw_in disconnected or short-circuited
DisplayEE
Alarm code meaningEEPROM empty or damaged
DisplayF1
Alarm code meaningDC voltage generator too low
DisplayH0
Alarm code meaningNo communication between main and hydraulic board
DisplayH1
Alarm code meaningCommunication error between outdoor unit main control chip and hydronic box main control chip
DisplayH2
Alarm code meaningWater side heat exchanger refrigerant outlet (liquid pipe) temperature sensor error
DisplayH3
Alarm code meaningWater side heat exchanger refrigerant inlet (gas pipe) temperature sensor error
DisplayH4
Alarm code meaningIPM module protection (L0/L1 appear 3 times in 1 hour)
DisplayH5
Alarm code meaningIndoor ambiant temperature sensor Ta disconnected or short circuited
DisplayH6
Alarm code meaningFaulty DC fan motor
DisplayH7
Alarm code meaningAbnormal voltage on main board
DisplayH8
Alarm code meaningPressure sensor disconnected or short circuited
DisplayH9
Alarm code meaningZone 2 water outlet temperature sensor Tw2 error
DisplayHA
Alarm code meaningWater side heat exchanger water outlet temperature sensor error
DisplayHb
Alarm code meaningPP protection appeared 3 times and Tw_out<7℃
DisplayHd
Alarm code meaningCommunication fault between master unit and slave unit (in parallel)
DisplayHE
Alarm code meaningCommunication error between main board and thermostat transfer board
DisplayHF
Alarm code meaningEEPROM failure or no power setting (kw) refrigerant circuit
DisplayHH
Alarm code meaningAlarm code H6 appeared 10 times in 120 minutes
DisplayHP
Alarm code meaningLow pressure protection (pressure < 0.6MPa 3 times in 1 hour)
DisplayL0
Alarm code meaningInverter module protection
DisplayL1
Alarm code meaningDC bus low voltage protection
DisplayL2
Alarm code meaningDC bus high voltage protection
DisplayL4
Alarm code meaningMCE malfunction
DisplayL5
Alarm code meaningZero speed protection
DisplayL8
Alarm code meaning>15Hz speed difference protection between forward and reverse clock
DisplayL9
Alarm code meaningSpeed ​​difference protection >15Hz between actual speed and set speed
DisplayP0
Alarm code meaningLow pressure protection
DisplayP1
Alarm code meaningHigh pressure protection
DisplayP3
Alarm code meaningCompressor over current
DisplayP4
Alarm code meaningDischarge temperature sensor Tp protection
DisplayP5
Alarm code meaningHigh temperature difference between water side heat exchanger water inlet and water outlet temperatures protection
DisplayP6
Alarm code meaningIPM module protection if codes L0, L1, L2, L4, L5, L7, L8 or L9 appear
DisplayPb
Alarm code meaningAntifreeze mode
DisplayPd
Alarm code meaningHigh temperature protection of condenser refrigerant outlet temperature
DisplayPP
Alarm code meaningExchanger inlet water temperature Tw_in is > the outlet temperature Tw-out in heating and domestic hot water production mode