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.

AW-YHPSA10-H91

7HP061068

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 meaningWater tank temperature sensor disconnected Tbt2 or short circuited
DisplayEd
Alarm code meaningWater exchanger inlet temperature sensor Tw_in disconnected or short-circuited
DisplayEE
Alarm code meaningEEPROM failure or no power setting (kw) on hydraulic module board
DisplayF1
Alarm code meaningDC voltage generator too low
DisplayH0
Alarm code meaningNo communication between main and hydraulic board
DisplayH1
Alarm code meaningNo communication between main and inverter EEPROM
DisplayH2
Alarm code meaningLiquid outlet temperature sensor T2 of air to water heat exchanger disconnected or short-circuited
DisplayH3
Alarm code meaningAir to water exchanger gas inlet temperature sensor T2B disconnected or short-circuited
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 Tw2 water outlet temperature sensor disconnected or short-circuited
DisplayHA
Alarm code meaningWater exchanger outlet temperature sensor Tw_out disconnected or short-circuited
DisplayHb
Alarm code meaningPP protection appeared 3 times and Tw_out<7?
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
Number of led blinking8
Alarm code meaningInverter module protection
DisplayL1
Number of led blinking9
Alarm code meaningDC voltage too low protection
DisplayL2
Number of led blinking10
Alarm code meaningDC voltage too high protection
DisplayL4
Number of led blinking12
Alarm code meaningFaulty contactor
DisplayL5
Number of led blinking13
Alarm code meaningZero crossing fan motor protection
DisplayL7
Number of led blinking15
Alarm code meaningPhase missing
DisplayL8
Number of led blinking16
Alarm code meaningCompressor frequency variation protection > 15Hz in 1 second
DisplayL9
Number of led blinking17
Alarm code meaningProtection Current compressor frequency differs from the target frequency by more than 15Hz
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 meaningProtection of high water temperature difference between water exchanger outlet and inlet
DisplayP6
Alarm code meaningIPM module protection if codes L0, L1, L2, L4, L5, L7, L8 or L9 appear
DisplayPb
Alarm code meaningFrost protection on water exchanger side
DisplayPd
Alarm code meaningHigh temperature protection of the refrigerant outlet in cooling mode
DisplayPP
Alarm code meaningExchanger inlet water temperature Tw_in is > the outlet temperature Tw-out in heating and domestic hot water production mode