12
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Troubleshooting
Installer reference guide
192
EPGA11~ EAV23DA6V
Daikin Altherma 3 H F
4P606487-1 – 2019.12
Possible causes
Corrective action
Too much heat pump capacity is used
for heating domestic hot water
Check if the
Space heating
priority
settings have been
configured appropriately:
▪
Make sure that the
Space heating
priority
has been enabled.
Go
to
[9.6.1]:
Installer
settings
>
Balancing
>
Space
heating priority
[5‑02]
▪
Increase the "space heating priority
temperature" to activate backup
heater operation at a higher outdoor
temperature.
Go
to
[9.6.3]:
Installer
settings
>
Balancing
>
Priority temperature
[5‑03]
12.3.9 Symptom: The pressure at the tapping point is temporarily unusually high
Possible causes
Corrective action
Failing or blocked pressure relief valve.
▪
Flush and clean the complete tank
including the piping between pressure
relief valve and the cold water inlet.
▪
Replace the pressure relief valve.
12.3.10 Symptom: Decoration panels are pushed away due to a swollen tank
Possible causes
Corrective action
Failing or blocked pressure relief valve.
Contact your local dealer.
12.3.11 Symptom: Tank disinfection function is NOT completed correctly (AH-error)
Possible causes
Corrective action
The disinfection function was
interrupted by domestic hot water
tapping
Program the start-up of the disinfection
function when the coming 4 hours NO
domestic hot water tapping is expected.
