11 Inspection and maintenance
22
Installation and maintenance instructions ecoTEC plus 0020239015_05
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.
10.6.4 Replacing the main PCB
C
C
D
B
A
A
1.
Open the electronics box. (
→
Page 13)
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.
10.6.5 Replacing the PCB for the user interface
B
C
C
D
A
A
1.
Open the electronics box. (
→
Page 13)
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.
10.7
Checking the product for leak-tightness
▶
Check that the product is leak-tight. (
→
Page 19)
11 Inspection and maintenance
11.1
Using original seals
If you replace components, use only the enclosed original
seals; additional sealing materials are not required.
11.2
Observing inspection and maintenance
intervals
▶
Adhere to the minimum inspection and maintenance in-
tervals. The inspection may require maintenance to be
carried out earlier, depending on the results.
–
Inspection and maintenance work (
→
Appendix)
11.3
Checking the CO
₂
content
1.
Start up the product with check programme
(P.01)
.
Installer level
–
Overview (
→
Page 27)
2.
Wait until the value that is read is stable.
–
Waiting period for reading a stable value: 5 min
