These tips help you to take the first troubleshooting steps:
- any fault can be acknowledged. To do this, please keep the adjustment button of the heat pump control unit pressed for 10 seconds.
- If the measures described here do not help to correct the fault, please contact your local accredited installer.
First troubleshooting steps
All units except brine/water compact (23 kW and 33kW) and water/water compact (28 kW and 44 kW) Here you must check whether an additional heat generetar is installed.
Undo the quick-release screws of the front or side panel (depending on the unit model). Please ensure that the fuses (of the control and load current) are switched off before opening the housing.
A safety temperature limiter is installed in the electric heating element. In the event of a heat pump failure or air in the system, please check whether the reset button has tripped.
If "gurgling" can be heard while the circulation pump is running, the heating system may need venting. The heat pump controller can be used to activate the circulation pumps individually to check their function.
To do this, go to Service > Settings > Vent system and set a tick next to the respective pump. The selected pump runs immediately following the confirmation.
The intake and discharge openings of the heat pump must be clear so that the heat pump can "breathe" properly. Increased running costs (efficiency of the heating pump worsens) and faults can be avoided in this way.
If the fan is not running the heat pump cannot remove the cold air produced and the air heat exchanger (evaporator) freezes. The result is a low-pressure fault. The fan can be activated via the heat pump controller to check its function.
To do this, go to Service > Settings > Vent system and set a tick next to BOSUP fan. The fan runs immediately following the confirmation. It runs for the duration of the set time or can be ended manually by removing the tick next to BOSUP fan.
Check the plausibility of the displayed value. This should correspond to the current outdoor temperature and be roughly the same as the heat source inlet temperature.
You will find these values under Service > Information > Temperatures.