ID
Description
Desig.
Details
ID7319
WKF fault code E554
Refrigerant quantity / refrigerant loss malfunction
ID7320
WKF fault code E556
Power ratings for the com. kit board (IM) and the moth-
erboard (AM) differ - check board versions.
ID7328
Open contact -
2nd mixed heating cycle
return flow temp.
S06
Open contact - 2. mixed heating cycle return flow temp.
ID7329
Short circuit - 2. mixed
heating cycle return
flow temp.
S06
Short circuit - 2. mixed heating cycle return flow temp.
ID7332
Anti-freeze protection
µ
PC
The anti-freeze protection in the heat pump's heat
exchanger was triggered due to an inlet temperature
that is too low. After eliminating the cause of the error,
the controller must be restarted to reset the error
ID7333
Negative temp. differ-
ential
The temperature difference when the heat generator is
active is implausible
ID7334
Comm. signal
Communication between operating unit SMT 1 and
power unit SMT 1 I/O was interrupted.
Warnings
ID
Description
Desig.
Details
ID8100
The system tempera-
ture is too low
The system temperature is too low to start the heat
pump
ID8102
Temperature discrep-
ancy in solar cycle
The collector temperature is at least 60K higher than
the storage tank temperature
ID8103
Overnight collector
temperature
A collector temperature of at least 45°C (113 °F)
occurred overnight
ID8105
Target flow rate
The flow rate has dropped below the target flow rate
ID8106
Low pressure
Low pressure. The compressor is disabled temporarily
ID8107
Compressor status
The active operating mode is safety mode because the
compressor is active without demand
ID8108
Compressor start error
µ
PC
Compressor start error
ID8109
EVD EVO probe fault
µ
PC
EVD EVO probe fault
ID8110
Driver offline
µ
PC
Driver offline
ID8111
Device offline
Device offline - please check the data connection
between the controller board and the inverter
ID8132
Anti-freeze protection
active
The anti-freeze protection function is currently active -
check the room climate mode set
ID8138
HW storage tank set
temp.
The hot water storage tank set temperature was
reduced due to low outside temperatures
ID8139
Lower application area
(heating)
The temperature has currently dropped below the guar-
anteed application area of the external unit in heating
mode
37
