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10
10 Faults / troubleshooting
This heat pump is a quality product and is designed for trouble-
free operation. If you cannot correct the fault yourself, please
contact your after-sales service technician.
ATTENTION!
Any work on the heat pump must only be performed by an authorised and
qualified after-sales service technician.
10.1 Troubleshooting
The symptoms listed below do not
indicate a malfunction.
Check the following points before contacting the after-sales service.
The operating LED flashes and an error code appears on the
operator panel display.
Switch the device off and inform your retailer of the error
code.
As soon as an error code appears, the timer function is
deactivated.
Emergency heating operation button
The indoor unit's supplementary heating can be used as an
emergency heater if the outdoor unit experiences a fault.
Press
to switch emergency heating operation on.
Press
to switch emergency heating operation off
again.
During emergency heating operation, no other
operations may be performed.
Symptom
Possible cause
Operation takes around 5 minutes to resume after a restart.
This is a mechanism intended to protect the device.
The outdoor unit does not work.
If the external temperature is outside the operating range,
the heat pump system activates protective functions.
The system does not heat properly.
The air inlet / outlet openings on the outdoor unit may be blocked by
snow.
If the hot water outlet temperature is set too low, it is possible that
the required heat output will not be achieved.
The device starts to operate after a power failure.
This is the automatic device restart feature.
Symptom
Possible cause
The device does not heat properly.
Set the temperature correctly.
Is the radiator valve closed?
Ensure that the air inlet and outlet openings
of the outdoor unit are not obstructed.
The device is noisy when running.
Check whether the device has been installed tilted
or whether the cover is not properly closed.
The device does not work.
Check whether the circuit breaker has tripped.
The operating LED does not light up or the display on the
operator panel is blank.
Has the power supply been interrupted or has the power failed?
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