Daikin Altherma 3 H MT ECH2O, Руководство по установке для специалистов

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14 | Troubleshooting
Installer reference guide
255
EPRA08~W1 + ETSH/X(B)12P30+50EF
Daikin Altherma 3 H MT ECH₂O
4P663478-1 – 2021.07
Possible causes Corrective action
The auxiliary boiler is not working
correctly. If an auxiliary boiler is connected
directly to the tank and space heating
support is activated, make sure that:
▪ the boiler is operating correctly.
▪ the boiler capacity is sufficient.
The backup heater equilibrium
temperature has not been configured
correctly Increase the equilibrium temperature to
activate the backup heater operation at
a higher outdoor temperature.
Go to: [9.3.7]:
Installer settings
> Backup heater > Equilibrium
temperature
[5‑01]
There is air in the system. Purge air manually or automatically. See
the air purge function in the chapter
"11 Commissioning" [
4
233].
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]
14.3.10 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.
Large domestic hot water tapping
happened recently before the
programmed start-up of the disinfection
function If in [5.6] Tank > Heat up mode the
mode Reheat only is selected, it is
recommended to program the start-up
of the disinfection function at least
4 hours later than the last expected
large hot water tapping. This start-up
can be set by installer settings
(disinfection function).
The disinfection operation was stopped
manually: [C.3]
Operation > Tank was
turned off during disinfection.
Do NOT stop tank operation during
disinfection.