Daikin Altherma 3 WS, Installer'S Reference Manual

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15 | Troubleshooting
Installer reference guide
228
EWSAH/X06D
Daikin Altherma 3 WS
4P675764-1 – 2022.04
Possible causes Corrective action
The water or central water loop volume
in the installation is too high Make sure that the water or central
water loop volume in the installation is
below the maximum allowed value (see
"8.1.3 To check the water volume and
flow rate of the space heating circuit
and the central water loop
circuit"
[
4
74] and "8.1.4 Changing the
pre-pressure of the expansion
vessel"
[
4
75]).
The water circuit head is too high The water circuit head is the difference
in height between the unit and the
highest point of the water circuit. If the
unit is located at the highest point of
the installation, the installation height is
considered 0 m. The maximum water
circuit head is 10 m.
Check the installation requirements.
15.3.5 Symptom: The pressure relief valve leaks
Possible causes Corrective action
Dirt is blocking the water pressure relief
valve outlet Check whether the pressure relief valve
works correctly by turning the red knob
on the valve counterclockwise:
▪ If you do NOT hear a clacking sound,
contact your dealer.
▪ If the water keeps running out of the
unit, close both inlet and outlet shut-
off valves first and then contact your
dealer.