Daikin EHBX08DA9W - To Install the Water Filter; 12 Troubleshooting; Overview: Troubleshooting; Precautions When Troubleshooting

12 Troubleshooting
Installer reference guide
86
ERGA04~08DAV3(A) + EHBH/X04+08DA
Daikin Altherma – Low temperature split
4P496758-1 – 2017.12
12.3.6 Symptom: The space is NOT sufficiently
heated at low outdoor temperatures
Possible causes Corrective action
The backup heater operation is
not activated
Check and make sure that:
▪ The backup heater operation
mode is enabled. Go to:
▪ [9.3.8]: Installer settings >
Backup heater > Operation
[4‑00]
▪ The backup heater overcurrent
fuse has not been turned off. If
it has, check the fuse and turn
it back on.
▪ The thermal protector of the
backup heater has not been
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
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
"9Commissioning"on page78.
Too much heat pump capacity is
used for heating domestic hot
water (applies only to
installations with a domestic hot
water tank)
Check and make sure that the
"space heating priority" settings
have been configured
appropriately:
▪ Make sure that the "space
heating priority status" 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 >
Offset BSH setpoint [5‑03]
12.3.7 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.
12.3.8 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.
12.3.9 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
When Tank > Heat up mode >
Reheat only or Schedule +
reheat is selected, it is
recommended to program the
start-up 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).
When Tank > Heat up 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.
The disinfection operation was
stopped manually: [C.3]
Operation > Tank was turned off
during disinfection.
Do NOT stop tank operation
during disinfection.
12.4 Solving problems based on error
codes
When a problem happens, an error code appears on the user
interface. It is important to understand the problem and to take
measures before resetting the error code. This should be done by a
licensed installer or by your local dealer.
This chapter gives you an overview of all error codes and the
content of the error code as it appears on the user interface.
For a more detailed troubleshooting guideline for each error, please
see the service manual.
12.4.1 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.
Final English - Tanslations in progress