12
Troubleshooting
12.1
No heat to the elements (circulation water) although the
compressor is running
Cause: - All heat goes to the hot water tank first. If there is a
heating requirement, the heat is switched to the circulating
water after 30 minutes. (Time adjustable).
(D) Gear valve or gear valve control failure. If this is the case,
you will receive an alarm "Overpressure hot gas" or "Over
temp VV" after 1-2 hours.
Measure: - Wait until the heat is switched over to the circulation water.
(E) You can also turn down the desired hot water
temperature to e.g. 0° C. The heat should then be
switched over to the circulation water within one minute.
12.2
The heat pump heats up the HW tank and then stops
Cause: The heat pump heats up the hot water tank and then
stops.
Measure: - No action needed. When the temperature drops,
the compressor will start again.
(F) If you want to test the heat for the radiator alt underfloor
heating, the system can temporarily raise the desired room
temperature, for example to 30° C, and / or temporarily
switch to a higher heating curve. Remember to lower to
normal value when the test is complete.
12.3
Overheated auxiliary heater – smell of burnt rubber
Cause: Air in the auxiliary heater. The heat pump is
commissioned without water filling first.
If the heater has been in the switched-on position for
an extended period of time, unpleasant odors may
occur. There is no risk of fire.
Measure: - Add water and vent the system.
(G) Reset the overheat protection by pressing the
reset button.
(H) If there is an unpleasant smell, the insulation on the
heater must be checked and, if necessary, replaced
with a new 9 mm Armaflex mat.
12.4
Poor hot water capacity.
Cause: Too low values set for hot water temperature and
hot water priority.
Measure: - Check the settings. Higher values give higher
hot water capacity.
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