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14
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Troubleshooting
Installer reference guide
256
EPRA08~W1 + ETSH/X(B)12P30+50EF
Daikin Altherma 3 H MT ECH₂O
4P663478-1 – 2021.07
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 most possible error codes and their
descriptions as they appear on the user interface.
INFORMATION
See the service manual for:
▪
The complete list of error codes
▪
A more detailed troubleshooting guideline for each error
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
Description
7H-01
Water flow problem
7H-04
Water flow problem during domestic hot water
production
7H-05
Water flow problem during heating/sampling
7H-06
Water flow problem during cooling/defrost
7H-07
Water flow problem. Pump deblocking active
7H-08
Pump abnormality during operation (pump
feedback)
80-01
Returning water temperature sensor problem
81-00
Leaving water temperature sensor problem
81-01
Mixed water thermistor abnormality.
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