REMKO WKF 85 - Manual (Page 75)

13 Troubleshooting and customer service
13.1 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 Possible causes Remedial measures
The heat pump does
not start or switches
itself off
Power outage, under-voltage Check the voltage and, if necessary,
wait for it to come back on
Defective mains fuse Master switch off Exchange mains fuse, master switch on
Damaged mains cable Repair by specialist firm
Power company off-period Wait until the power-company off-
period is over and the heat pump starts
up as required
Operational temperature limits too low
or too high
Observe temperature ranges
Set-point temperature exceeded Incor-
rect mode
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.
Heat circuit pump fails
to switch off
Incorrect pump switching Arrange to have pump switching
checked in "heating circuit" expert level
Heat circuit pumps fail
to switch on
Incorrect mode set Check mode
Control PCB fuse in indoor module
switching cabinet faulty
Exchange the fuse on the left side of
the control PCB
Incorrect heating program set Check heating program We recom-
mend the operating mode "heat" in the
cold heating season
Temperature overlapping, e.g. external
temperature greater than room temper-
ature
Observe temperature ranges
Red indicator lamp Failure outdoor module Contact customer service
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