Symptom: Heat Pump Failure; Symptom: The System Is Making Gurgling Noises After Commissioning - Daikin ETVZ16S23DA6V User Reference Manual

7 | Troubleshooting

7.5 Symptom: Heat pump failure

7.6 Symptom: The system is making gurgling noises after commissioning

User reference guide
62
When the heat pump fails to operate, the backup 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, the
backup heater automatically takes over the domestic hot water production and
space heating.
▪ 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 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 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 takes over the heat load, electricity consumption will be
considerably higher.
Possible cause
There is air in the system.
Various malfunctions.
(a)
We recommend to purge air with the air purge function of the unit (to be performed by
the installer). If you purge air from the heat emitters or collectors, mind the following:
off, space heating operates as normally but
or will appear on the user interface.
See "7.1 To display the help text in case
of a malfunction" [
Purge air from the system.
Check if
home screen of the user interface. See
"7.1 To display the help text in case of a
malfunction" [
information about the malfunction.
Corrective action
4
60].
Corrective action
(a)
or is displayed on the
4
60] for more
ETVZ16S18+23DA6V+9W
Daikin Altherma 3 H HT F
4P586461-1A – 2020.01