Symptom: The Space Is Not Sufficiently Heated At Low Outdoor Temperatures; Symptom: The Pressure At The Tapping Point Is Temporarily Unusually High; Symptom: Tank Disinfection Function Is Not Completed Correctly (Ah-Error); Solving Problems Based On Error Codes - Daikin Altherma 3 GEO Series Installer's Reference Manual
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- Installer's reference manual (252 pages) ,
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- User reference manual (36 pages)
Table of Contents
14.3.6
Symptom: The space is NOT sufficiently
heated at low outdoor temperatures
Possible causes
The backup heater operation is
not activated
The backup heater equilibrium
temperature has not been
configured correctly
There is air in the system.
Too much heat pump capacity is
used for heating domestic hot
water
14.3.7
Symptom: The pressure at the tapping
point is temporarily unusually high
Possible causes
Failing or blocked pressure relief
valve.
EGSAH/X06+10DA9W(G)
Daikin Altherma 3 GEO
4P569820-1A – 2019.09
Corrective action
Check the following:
▪ The backup heater operation
mode is enabled. Go to:
▪ [9.3.8]:
Installer
settings > Backup heater
> Operation [4‑00]
▪ The backup heater overcurrent
circuit breaker is on. If not, turn
it back on.
▪ The thermal protector of the
backup
heater
is
NOT
activated. If it has, check the
following, and then press the
reset button in the switch box:
▪ The water pressure
▪ Whether there is air in the
system
▪ The air purge operation
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]
Purge air manually or
automatically. See the air purge
function in the chapter
"11 Commissioning" [ 4 87].
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]
Corrective action
▪ Flush and clean the complete
tank
including
the
piping
between pressure relief valve
and the cold water inlet.
▪ Replace the pressure relief
valve.
14.3.8
Symptom: Tank disinfection function is
NOT completed correctly (AH-error)
Possible causes
The disinfection function was
interrupted by domestic hot water
tapping
Large domestic hot water tapping
happened recently before the
programmed start-up of the
disinfection function
The disinfection operation was
stopped manually: [C.3]
Operation > Tank was turned off
during disinfection.
14.4
Solving problems based on error
>
codes
If the unit runs into a problem, the user interface displays an error
code. It is important to understand the problem and to take
measures before resetting an error code. This should be done by a
licensed installer or by your local dealer.
This chapter gives you an overview of all possible error codes and
their descriptions as they appear on the user interface.
For detailed troubleshooting of each error, see the service manual.
14.4.1
To display the help text in case of a
malfunction
>
In case of a malfunction, the following will appear on the home
screen depending on the severity:
▪
: Error
▪
: Malfunction
You can get a short and a long description of the malfunction as
follows:
>
1 Press the left dial to open the main menu and go to
Malfunctioning.
Result: A short description of the error and the error
code is displayed on the screen.
2 Press
in the error screen.
Result: A long description of the error is displayed
on the screen.
14.4.2
Error codes: Overview
Error codes of the unit
Error code
7H-01
Water flow problem
14 Troubleshooting
Corrective action
Program the start-up of the
disinfection function when the
coming 4 hours NO domestic hot
water tapping is expected.
If in [5.6] Tank > Heat up mode
the mode Reheat only or
Schedule + reheat 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).
If in [5.6] Tank > Heat up mode
the mode Schedule only is
selected, it is recommended to
program a Eco action 3 hours
before the scheduled start-up of
the disinfection function to
preheat the tank.
Do NOT stop tank operation
during disinfection.
Description
Installer reference guide
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Troubleshooting
