Stiebel Eltron WPM 234727 Guide Des Menus Et Messages page 10

NOTIFICATION LIST
WPM (CN) 234727, 239693
Message code Notifica-
tion from
10002 Heat pump
10003 Heat pump
10004 Heat pump
10005 Heat pump
10006 Heat pump
10013 Heat pump
10015 Heat pump
10019 Heat pump
10023 Heat pump
10024 Heat pump
10025 Heat pump
10027 Heat pump
10028 Heat pump
10029 Heat pump
10034 Heat pump
10042 Heat pump
10047 Heat pump
10048 Heat pump
10049 Heat pump
10099 Heat pump
10108 FES
10115 FES
20012 Heat pump
20014 Heat pump
20022 Heat pump
20033 Heat pump
20035 Heat pump
20036 Heat pump
20037 Heat pump
20038 Heat pump
20039 Heat pump
10 | V2.3
Reason for fault code being triggered
Compressor or starting contactor stuck
The minimum low pressure limiter has been trig-
gered.
The high pressure limiter has responded.
The low pressure switch has been triggered.
The minimum mean pressure limiter has been trig-
gered.
The minimum low pressure (< 0.9 bar absolute) lim-
iter has been triggered.
The frost stat has been triggered in defrost mode.
Sensor value of the "outside temperature sensor"
outside the permissible range
The maximum high pressure limiter has been trig-
gered.
Hot gas temperature has exceeded limit.
Sensor value of the "high pressure sensor" outside
the permissible range.
High pressure does not increase significantly above
low pressure following compressor start-up and a
delay time.
Superheating of the refrigerant at the evaporator
discharge or the compressor intake for too long
below the permissible limit.
Unexpectedly high deviation of the expansion valve
opening from the pre-control characteristic
Flow rate monitoring from heating output, flow
temperature and return temperature
Sensor value of the "condenser discharge sensor"
outside the permissible range
The low pressure limiter has been triggered in de-
frost operation.
The low pressure limiter has been triggered in cool-
ing operation.
The frost protection pressure sensor has responded.
Sensor value of the "oil sump temperature sensor"
outside the permissible range
Low supply voltage FES
Incorrect communication with the FES.
Outlet limiter for high pressure compressor has
been triggered.
Outlet limiter for low pressure compressor has been
triggered.
Start limiter – fault for high pressure compressor has
been triggered.
Minimum flow temperature not reached; switching
point 6.5 °C.
Limiter for power interruption to inverter of low
pressure compressor has been triggered.
Temperature limiter for inverter of low pressure
compressor has been triggered.
Rotor stalled limiter for low pressure compressor
has been triggered.
Start limiter – fault for low pressure compressor has
been triggered.
Limiter for power failure to inverter of high pressure
compressor has been triggered.
Possible cause of fault / remedy
Check contactors K1 and K2.
Refrigerant escaped. Expansion valve does not
open. Fan not running.
Check the flow rate and sensor connection on the
heating side. Check the selected room temperature
or heating curve.
Refrigerant escaped. Expansion valve does not
open.
Refrigerant escaped. Expansion valve does not
open.
Refrigerant escaped. Expansion valve does not
open.
Water flow rate too low, water temperature too low.
Check sensor, leads and the relevant plug-in con-
nectors, and replace if faulty.
Heating flow rate too low, selected room tempera-
ture / heating curve too high.
Injection valve not working correctly. Expansion
valve not working correctly. Refrigerant leak.
Check sensor, leads and the relevant plug-in con-
nectors, and replace if faulty.
Phase sequence incorrect or heat pump connection
fuse has blown. Remove the cause. Then carry out a
WPM reset.
Expansion valve not working correctly.
Refrigerant leak. Expansion valve not working cor-
rectly.
Check flow rate.
Check sensor, leads and the relevant plug-in con-
nectors, and replace if faulty.
Refrigerant escaped. Expansion valve does not
open.
Non-return valve leaks. Expansion valve not work-
ing correctly.
Check sensor, leads and the relevant plug-in con-
nectors, and replace if faulty.
Check power source and wiring to the FES.
Check the communication cable terminal or replace
the communication cable.
Mains voltage for compressor supply may be too
low or mains impedance of the compressor supply
may be too high.
Mains voltage for compressor supply may be too
low or mains impedance of the compressor supply
may be too high.
Mains voltage for compressor supply may be too
low or mains impedance of the compressor supply
may be too high.
Check heating water flow rate. Check cooling flow
sensor.
Value is reset automatically. If necessary, check the
compressor wiring.
Value is reset automatically. If necessary, clean the
inverter heat sink.
Value is reset automatically.
Mains voltage for compressor supply may be too
low or mains impedance of the compressor supply
may be too high.
Value is reset automatically. If necessary, check the
compressor wiring.
WPMsystem