Daikin EHVZ04S18EA6V, Руководство по установке для специалистов

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14 | Troubleshooting
Installer reference guide
234
ERGA04~08EA + 08S18+23EA
Daikin Altherma 3 R F
4P629093-1A – 2021.11
Possible causes Corrective action
The water volume in the installation is
too high Make sure that the water volume in the
installation is below the maximum
allowed value (see
"8.5.3 To check the
water volume and flow rate" [
4
86] and
"8.5.4 Changing the pre-pressure of the
expansion vessel"
[
4
88]).
The water circuit head is too high The water circuit head is the difference
in height between the indoor unit and
the highest point of the water circuit. If
the indoor 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.
14.3.7 Symptom: The water 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 the water inlet and
outlet shut-off valves first and then
contact your dealer.
14.3.8 Symptom: The space is NOT sufficiently heated at low outdoor temperatures
Possible causes Corrective action
The backup heater operation is not
activated Check the following:
▪ The backup heater operation mode is
enabled.
Go to: [9.3.8]: Installer
settings > Backup heater >
Operation [4‑00]
▪ The backup heater overcurrent circuit
breaker is on. If not, turn it back on.
▪ The thermal protector of the backup
heater is NOT activated. If it has,
check the following, and then press
the reset button in the switch box:
- The water pressure
- Whether there is air in the system
- The air purge operation