Daikin EKOMBG22ABV1 Installationsanleitung Seite 45

No electrical supply (24 V).
8.3.4 The power is reduced
Possible causes:
At high rpm, the power has decreased.
8.3.5 CH is not reaching correct temperature
Possible causes:
Water pressure in installation is too low.
No
Room thermostat is not set correctly.
No
Temperature is set too low.
No
No flow through the installation.
No
The boiler power is not set correctly.
No
No heat transfer due to contamination in the CH
boiler/installation.
8.3.6 No domestic hot water
Possible causes:
The service display shows nothing.
No
The service display shows nothing.
No
Flow sensor does not work.
No
Tap flow < 1.5 l/min.
No
No electricity supply on flow sensor (5V DC).
No
S3 faulty.
No
The thermostatic shower or bath tap is faulty.
8.3.7 DHW is not reaching the correct temperature
Possible causes:
Tap flow too high.
No
DHW temperature set too low.
CH installation becomes hot during tapping.
No
Insufficient heat transfer due to lime scale or
contamination in the CH boiler on DHW side.
Daikin Europe NV
Replace the faulty controller. Check the wiring in accordance with the diagram.
Yes Check the connector X4.
Replace the faulty controller.
Solution:
Clean the unit and siphon.
Yes
Check the flue tube and the air supply system.
Solution:
Yes Top up the installation. See par. 6.1.1.
Yes Check the setting and adjust if required.
Increase the CH temperature See Operation CH. If there is an outdoor sensor:
Yes
Check the outdoor sensor for short circuit: rectify this.
Check the ∆T (± 20° C) between the supply and return CH. Ensure there is good
Yes
flow through the installation.
Yes Adjust the boiler power. See Setting maximum CH power.
Yes Rinse the CH boiler/installation on the side of the CH.
Solution:
Yes Check whether the plug is in the socket.
Yes Check the fuse, see Electrical diagram par. 10.1
Yes Replace the flow sensor.
Yes Increase the tap flow.
Yes Check the wiring in accordance with the diagram.
Yes Replace S3.
The thermostatic tap only lets through cold water. This means the tap flow through
Yes
the boiler remains under 1.5 l/min. Check the thermostatic tap.
Solution:
Reduce the tap flow. Check the dosing disk (EKOMBG22ABV1 and
Yes
EKOMBG28ABV1)
Yes Increase the DHW temperature, see par. 7.1.
Unwanted circulation in the ch circuit during hot water request due to thermosiphon
Yes 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.
Yes Remove lime scale or rinse the CH boiler on the DHW side.
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