Symptom: Heat Pump Failure; Symptom: The System Is Making Gurgling Noises After Commissioning - Daikin Altherma 3 H MT F+W User Reference Manual

8.5 Symptom: Heat pump failure

8.6 Symptom: The system is making gurgling noises after commissioning

ETVH/X12S(U)18+23EA6V+9W + ETBH/X12EF6V+9W
Daikin Altherma 3 H MT F+W
4P634888-1 – 2021.03
When the heat pump fails to operate, the backup heater and/or booster heater
can serve as an emergency heater. It then takes over the heat load either
automatically or by manual interaction.
▪ When Emergency is set to Automatic and a heat pump failure occurs:
- For ETVH/X: The backup heater automatically takes over the domestic hot
water production and space heating.
- For ETBH/X: The backup heater automatically takes over the heat load, and the
booster heater in the optional tank takes over the domestic hot water
production.
▪ When Emergency is set to Manual and a heat pump failure occurs, the
domestic hot water heating and space heating stops.
To manually recover it via the user interface, go to the Malfunctioning main
menu screen and confirm whether the backup heater and/or booster heater can
take over the heat load or not.
▪ Alternatively, when Emergency is set to:
- auto SH reduced/DHW on, space heating is reduced but domestic hot
water is still available.
- auto SH reduced/DHW off, space heating is reduced and domestic hot
water is NOT available.
- auto SH normal/DHW
domestic hot water is NOT available.
Similarly as in Manual mode, the unit can take the full load with the backup
heater and/or booster heater if the user activates this via the Malfunctioning
main menu screen.
When the heat pump fails,
Possible cause
Heat pump is damaged.
INFORMATION
When the backup heater or booster heater takes over the heat load, electricity
consumption will be considerably higher.
Possible cause
There is air in the system.
Incorrect hydraulic balance.
off, space heating operates as normally but
or will appear on the user interface.
See "8.1 To display the help text in case
of a malfunction" [
Purge air from the system.
To be performed by the installer:
1 Perform hydraulic balancing to
assure that the flow is correctly
distributed between the emitters.
2 If hydraulic
sufficient,
limitation settings ([9-0D] and [9-0E]
if applicable).
8 Troubleshooting
|
Corrective action
4
57].
Corrective action
(a)
balancing is
change the pump
User reference guide
not
59