Daikin EHFH03S18DA3V [176/204] Solving problems based on error codes
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Daikin EHFH03S18DA3V [176/204] Solving problems based on error codes

Daikin EHFH03S18DA3V [176/204] Solving problems based on error codes
13 | Troubleshooting
Installer reference guide
176
ERLA03DAV3 + EHFH03S18DJ3V
Daikin Altherma 3 R F
4P596806-1A – 2020.05
13.3.9 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.
13.3.10 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.
13.3.11 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.
Large domestic hot water tapping
happened recently before the
programmed start-up of the disinfection
function
When the Domestic hot water >
Type > Reheat or Reheat + sched.
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 via the installer
settings (disinfection function).
When the Domestic hot water >
Type > Scheduled only is selected,
it is recommended to program a
Storage eco 3hours before the
scheduled start-up of the disinfection
function to preheat the tank.
The disinfection operation was stopped
manually: with the user interface
displaying the DHW home page and its
user permission level set to
Installer, the button was pressed
during disinfection operation.
Do NOT press the button while the
disinfection function is active.
13.4 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.

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