7 181 465 347 (01.07)
34
Rectifying faults
FA
and
flashing.
After appliance switches off flame is detected
Check
Action
1.
Is condensation trap in condensing
boiler blocked?
yes:
B
Clean condensation trap discharge pipe.
B
Press
, does appliance restart???
FA?
↓
2.
no:
↓
2.
2.
Electrodes faulty.
B
Replace electrode assembly.
B
Turn ON the appliance.
B
Press
, does appliance restart???
FA?
B
Power OFF the appliance.
↓
3.
3.
Problem with flue?
B
Check CO
2
level in combustion
air.
> 0,2 % CO
2
?
yes:
B
Check flue and repair or replace if necessary.
B
Press
, does appliance restart???
FA?
B
Power OFF the appliance.
↓
4.
no:
↓
4.
4.
The gas valve is damaged.
B
Change the gas valve.
B
Turn ON the appliance.
B
Press
, does appliance restart???
FA?
B
Power OFF the appliance.
↓
5.
5.
Check if the 20-pin connector lead
assembly is damaged.
B
Change the 20-pin connector lead assembly.
B
Turn ON the appliance.
B
Press
, does appliance restart???
FA?
B
Power OFF the appliance.
↓
6.
6.
The PCB control board is damaged.
B
Disconnect the boiler electrical connection.
B
Change PCB control board.
B
Reconnect the boiler electrical connection.
B
Turn ON the appliance.
Summary of Contents for ZBR 8-35 ICS1
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