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11
Troubleshooting and customer service
The unit has been manufactured using state-of-the-art production methods and tested several times to
ensure its correct function. However, in the event that malfunctions should occur, the device should be
checked against the following list. Please inform your dealer if the unit is still not working correctly after all of
the functional checks have been performed.
Fault
The heat pump does
not start or switches
itself off
Heat circuit pump fails
to switch off
Heat circuit pumps fail
to switch on
Troubleshooting
Troubleshooting A corresponding error code
appears on the heat pump manager display in the
event of a fault in the heating system. The mean-
ings of the displayed error codes can be taken
from the table on the next page. The system
should be restarted after a brief shut-down after
the fault has been rectified (turn the mode switch
off then on again). Subsequently the heat-pump
manager will re-start, automatically reconfigure and
continue to operate with the set values.
Possible causes
Power outage, under-voltage
Defective mains fuse Master switch off
Damaged mains cable
Power company off-period
Operational temperature limits too low
or too high
Set-point temperature exceeded Incor-
rect mode
Incorrect pump switching
Incorrect mode set
Control PCB fuse in indoor module
switching cabinet faulty
Incorrect heating program set
Temperature overlapping, e.g. external
temperature greater than room tem-
perature
Remedial measures
Check the voltage and, if necessary,
wait for it to come back on
Exchange mains fuse, master switch on
Repair by specialist firm
Wait until the power-company off-
period is over and the heat pump starts
up as required
Observe temperature ranges
The set-point temperature has to be
higher than the heat-source tempera-
ture, check mode
Disconnect the outdoor module, then
establish the correct clamp order using
the connection plan Re-establish
voltage to the outdoor module. Also
make sure that the protective earth is
connected correctly.
Arrange to have pump switching
checked in "heating circuit" expert level
Check mode
Exchange the fuse on the left side of
the control PCB
Check heating program We recom-
mend the operating mode "heat" in the
cold heating season
Observe temperature ranges
Heat pump manager error codes
The error codes listed in the table can be called up
in the display of the heat pump manager. See Con-
troller ---> Displays ---> System ---> Errors. If an
error with a corresponding code is present, an
error scan can be performed by pressing the
assigned function key. After a short period of time
the 10 most recent faults, including the date and
time, are listed with the exception of error codes 54
and 55. They are treated as recurring messages
and are not listed in the error scan.
59
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