Daikin EKOMB28AAV1 [51/60] Ch installation stays warm unwanted

Daikin EKOMB28AAV1 [51/60] Ch installation stays warm unwanted
Daikin Europe NV
51
Insufficient heat transfer due to lime scale or
contamination in the CH boiler on the tap water
side.
Yes Remove lime scale or rinse the CH boiler on the tap water side.
8.3.8 CH installation stays warm unwanted
Possible causes:
Solution/cause:
Room thermostat/weather dependent regulation
faulty or short circuited.
Yes
Check
the wiring.
Check OpenTherm and On/off connection of the unit.
Replace the thermostat.
Replace the weather-dependent regulation.
No
CH installation is heated due to Tap comfort.
The service display regularly shows code 7.
Yes
Unwanted circulation
in the
CH
circuit due to thermo
siphon effect or second pump in
the CH circuit. Install a check valve in case of thermosiphon effect or a two-way
valve in case of a second pump.

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