13 Troubleshooting
40
Installation and maintenance instructions Energy
7
0020300877_01
B
A
5.
Remove the gas pipe .
B
3
4
A
6.
Undo the clip underneath the condensate tray
(4)
.
7.
Undo the two screws
(3)
.
A
5
C
B
8.
Lift the heat exchanger up slightly and remove it to-
gether with the condensate tray.
9.
Remove the ignition transformer
(5)
.
10. Replace all the seals.
11. Install the new heat exchanger in reverse order.
13.6.4 Replacing the PCB
C
C
D
B
C
C
D
B
A
A
1.
Open the electronics box. (
2.
Pull all of the plugs out from the PCB.
3.
Undo the clips on the PCB.
4.
Remove the PCB.
5.
Install the new PCB in such a way that it clicks into the
groove at the bottom and into the clip at the top.
6.
Plug in the PCB plugs.
7.
Close the electronics box.
13.6.5 Replacing the PCB for the user interface
B
C
C
D
A
A
1.
Open the electronics box. (
2.
Pull the plug out of the PCB.
3.
Undo the clips on the PCB.
4.
Remove the PCB.
5.
Install the new PCB in such a way that it clicks into the
groove at the bottom and into the clip at the top.
6.
Plug in the PCB plug.
7.
Close the electronics box.
