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34
Rectifying faults
Error F7
2. Electrode assembly defective?
B Power OFF the appliance.
B Remove electrode assembly.
Electrode assembly burnt out?
B Replace electrode assembly.
B Turn ON the appliance.
B Press , restart the appliance.
FA? ↓3.
3. Problem with flue?
B Check CO
2
level in combustion
air.
Is CO
2
level above 0,2 % ?
yes: B Check flue, clean if necessary.
B Press , restart the appliance.
FA? ↓4.
no: ↓4.
4. The gas valve is damaged. B Power OFF the appliance.
B Disconnect the boiler electrical connection.
B Turn off gas cock.
B Change the gas valve.
B Open the gas cock.
B Reconnect the boiler electrical connection.
B Turn ON the appliance.
B Check appliance for leaks.
B Press , restart the appliance.
FA?↓5.
5. Check if the 20-pin connector lead
assembly is damaged.
B Power OFF the appliance.
B Disconnect the boiler electrical connection.
B Change the 20-pin connector lead assembly.
B Reconnect the boiler electrical connection.
B Turn ON the appliance.
B Press , restart the appliance.
FA? ↓6.
6. The PCB control board is damaged. B Make a note of the altered service settings (see
table 1 on page 7).
B Power OFF the appliance.
B Disconnect the boiler electrical connection.
B Change PCB control board.
B Reconnect the boiler electrical connection.
B Turn ON the appliance.
B Restore service settings previously noted down.
FA and flashing.
After appliance switches off flame is detected
Check Action
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