Daikin Altherma 3 H HT F User Manual

7 | Troubleshooting
User reference guide
60
ETVZ16S18+23DA6V+9W
Daikin Altherma 3 H HT F
4P586461-1 – 2019.07
7.5 Symptom: Heat pump failure
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 off, space heating operates as normally but
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, or will appear on the user interface.
Possible cause Corrective action
Heat pump is damaged. See "7.1To display the help text in case
of a malfunction"[458].
INFORMATION
When the backup heater takes over the heat load, electricity consumption will be
considerably higher.
7.6 Symptom: The system is making gurgling noises after commissioning
Possible cause Corrective action
There is air in the system. Purge air from the system.
(a)
Various malfunctions.
Check if or is displayed on the
home screen of the user interface. See
"7.1To display the help text in case of a
malfunction"[458] for more
information about the malfunction.
(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:

Daikin Altherma 3 H HT F Specifications

General

Brand	Daikin
Model	Altherma 3 H HT F
Category	Heat Pump
Language	English