Troubleshooting 13
0020300877_01 Energy
7
Installation and maintenance instructions
39
13 Troubleshooting
13.1
Eliminating faults
▶
If fault codes (
F.XX
) are present, consult the table in the
appendix for advice or use the check programme(s).
Overview of fault codes (
Check programmes
–
Overview (
If several faults are present at the same time, the fault codes
are displayed alternately followed by the time at which the
respective fault occurred.
▶
Hold the
button down for more than 3 seconds.
▶
If you are unable to clear the fault code and it reappears
despite several reset attempts, contact customer service.
13.2
Calling up the fault memory
The last ten fault codes are stored in the fault memory (to-
gether with the time at which the respective fault occurred).
▶
Press and hold the
button for more than
seven seconds.
Overview of fault codes (
▶
Press the
button to exit this menu.
13.3
Deleting the fault memory
▶
Delete the fault memory (d.94).
Overview of diagnostics codes (
13.4
Resetting parameters to factory settings
1.
Navigate to diagnostics code
D.096
in the installer level.
2.
Set the diagnostics code to 1, and confirm by pressing
.
13.5
Preparing the repair work
1.
Decommission the product.
2.
Disconnect the product from the electrical installation.
3.
Remove the front casing.
4.
Close the gas stopcock.
5.
Close the service valves in the heating flow and in the
heating return.
6.
Close the service valve in the cold water pipe.
7.
Drain the product if you want to replace water-carrying
components of the product.
8.
Ensure that water does not drip on live components
(e.g. the electronics box).
9.
Use only new seals and O-rings. Do not use any addi-
tional components.
13.5.1 Procuring spare parts
The original components of the product were also certified
by the manufacturer as part of the declaration of conformity.
If you use other, non-certified or unauthorised parts during
maintenance or repair work, this may void the conformity of
the product and it will therefore no longer comply with the
applicable standards.
We strongly recommend that you use original spare parts
from the manufacturer as this guarantees fault-free and safe
operation of the product. To receive information about the
available original spare parts, contact the contact address
provided on the back page of these instructions.
▶
If you require spare parts for maintenance or repair
work, use only the spare parts that are permitted for the
product.
13.6
Replacing defective components
13.6.1 Replacing the burner
1.
Remove the gas-air mixture unit. (
2.
Remove the burner seal.
3.
Remove the burner .
4.
Install the new burner complete with new burner seal on
the heat exchanger.
5.
Install the gas-air mixture unit. (
13.6.2 Gas-air mixture, replacing
1.
Remove the gas-air mixture unit. (
2.
Install the new gas-air mixture (
13.6.3 Replacing the heat exchanger
1.
Remove the side section. (
2.
Remove the gas-air mixture unit. (
E
1
2
D
B
C
A
3.
Remove the flow pipe
(1)
.
4.
Remove the return pipe
(2)
.
