10 Troubleshooting
22
Installation and maintenance instructions ecoFIT pure 0020230531_01
10.2
Calling up and clearing the fault memory
The last 10 fault messages are stored in the fault memory.
▶
Call up the installer level. (
→
Page 15)
▶
Navigate to the
fault codes
.
◁
The number of faults that have occurred is shown in
the display and the faults that are currently called up
are displayed with their fault numbers
F.xx
.
▶
Press
or
to call up individual fault messages.
▶
To delete the entire fault list, navigate to diagnostics code
D.094
in the installer level.
▶
Set the diagnostics code to
1
, and confirm by pressing
.
10.3
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
.
10.4
Preparing the repair work
1.
Switch off the product.
2.
Disconnect the product from the power mains.
3.
Remove the front casing.
4.
Close the gas isolator cock.
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-bearing
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 sealing materials.
10.5
Replacing defective components
10.5.1 Replacing the burner
1.
Remove the gas-air mixture unit. (
→
Page 26)
2.
Remove the two burner seals.
3.
Remove the burner.
4.
Insert the new burner.
5.
Insert two new burner seals in the burner cover.
6.
Install the gas-air mixture unit. (
→
Page 28)
10.5.2 Replacing the gas-air mixture unit
1.
Remove the gas-air mixture unit. (
→
Page 26)
2.
Install the new gas-air mixture (
→
Page 28).
10.5.3 Replacing the heat exchanger
1.
Remove the front casing. (
→
Page 10)
2.
Remove the gas-air mixture unit. (
→
Page 26)
1
A
B
3.
Remove the gas pipe
(1)
.
1
2
3
2
4
A
B
4.
Remove the temperature sensor
(3)
.
5.
Remove the upper clip
(1)
.
6.
Remove the lower clip
(4)
.
7.
Remove the supply pipe
(2)
.
2
2
3
B
1
A
8.
Remove the upper clip
(1)
.
9.
Remove the lower clip
(3)
.
10. Remove the return pipe
(2)
.
