Stiebel Eltron WPM 234727 Guide Des Menus Et Messages page 11

NOTIFICATION LIST
WPM (CN) 234727, 239693
Message code Notifica-
tion from
20040 Heat pump
20041 Heat pump
20045 Heat pump
20046 Heat pump
20050 Heat pump
20051 Heat pump
20057 Heat pump
20058 Heat pump
20059 Heat pump
20060 Heat pump
20061 Heat pump
20062 Heat pump
20063 Heat pump
20064 Heat pump
20065 Heat pump
20066 Heat pump
20067 Heat pump
20068 Heat pump
20069 Heat pump
20070 Heat pump
20071 Heat pump
20072 Heat pump
20073 Heat pump
20074 Heat pump
20075 Heat pump
20076 Heat pump
20077 Heat pump
20078 Heat pump
20079 Heat pump
20080 Heat pump
20081 Heat pump
20084 Heat pump
20085 Heat pump
20091 Heat pump
20093 Heat pump
20095 Heat pump
WPMsystem
Reason for fault code being triggered
Temperature limiter for inverter of high pressure
compressor has been triggered.
Rotor stalled limiter for high pressure compressor
has been triggered.
Speed deviation between set and actual compres-
sor values for a defined time (low pressure compres-
sor in the case of two compressors)
Speed deviation between set and actual compres-
sor values for a defined time (high pressure com-
pressor in the case of two compressors)
Temperature limiter for minimum heat source flow
temperature has responded
Temperature limiter for minimum heat source re-
turn temperature has responded
Major inverter fault: Inverter IGBT excess current
Major inverter fault: PFC IGBT excess current
Major inverter fault: DC intermediate circuit excess
voltage
Major inverter fault: DC intermediate circuit under-
voltage
Major inverter fault: AC input excess voltage
Major inverter fault: AC input undervoltage
Major inverter fault: Voltage differences between
the three input phases
Major inverter fault: Desaturation
Major inverter fault: Inverter IGBTs excess tempera-
ture
Major inverter fault: PFC IGBTs excess temperature. Inverter fault
Major inverter fault: Rotor does not turn as expect-
ed.
Major inverter fault: Arithmetic fault in the measur-
ing and analysis process
Major inverter fault: Input relay open
Major inverter fault: Current differences between
the three inverter IGBTs
Major inverter fault: Current differences between
the three PFC IGBTs
Major inverter fault: LV range exceeded
Major inverter fault: Motor excess speed
Minor inverter fault: DC intermediate circuit under-
voltage
Minor inverter fault: Torque limit reached
Minor inverter fault: Modbus communication is
faulty
Minor inverter fault: Compressor scroll excess tem-
perature
Minor inverter fault: Compressor motor excess tem-
perature
Minor inverter fault: Switching circuit excess tem-
perature
Minor inverter fault: Inverter IGBTs excess temper-
ature
Minor inverter fault: PFC IGBTs excess temperature
Minor inverter fault: Temperature differences be-
tween the three inverter IGBTs
Minor inverter fault: Temperature differences be-
tween the three PFC IGBTs
Minor inverter fault: Communication between an-
alogue/digital converter and auxiliary processor is
faulty
Low relevance communication objects have been
incorrectly transferred repeatedly between the IWS
and inverter.
INV major fault central fault 1
Possible cause of fault / remedy
Value is reset automatically. If necessary, clean the
inverter heat sink.
Value is reset automatically.
Inverter or compressor not working correctly. Check
inverter BUS connection.
Inverter or compressor not working correctly. Check
inverter BUS connection.
Check brine circuit
Check brine circuit
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault
Inverter fault. Check leads and the relevant plug-in
connectors, and replace if faulty. Check the power
supply to the inverter.
Inverter fault
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