Worcester CDi Combi N.G Service Booklet page 47

EA
and RESET button and fault indicator LED are flashing.
During operation: flame not detected.
Check
15. Electrode assembly defective?
B Switch OFF the appliance.
B Remove electrode assembly.
Electrode assembly burnt out or
cracked?
16. B Switch OFF the appliance.
B Disconnect the boiler power
connection.
B Check if the 20-pin connector
lead assembly is damaged.
17. The PCB is damaged.
Tab. 25 EA Error codes
8 716 115 748 (2009/09)
Supplied By www.heating spares.co Tel. 0161 620 6677
Action
yes: B Replace electrode assembly.
B Switch ON the appliance.
B Press the reset button for 3 seconds and release it.
After releasing the appliance re-starts.
EA? go to 16
no: B Refit electrode assembly.
B Switch ON the appliance.
B Press the reset button for 3 seconds and release it.
After releasing the appliance re-starts.
EA? go to 16
B Change the connector lead assembly.
B Reconnect the appliance power connection.
B Switch ON the appliance.
B Press the reset button for 3 seconds and release it.
After releasing the appliance re-starts.
EA? go to 17
B Make a note of the altered service settings.
B Switch OFF the appliance.
B Disconnect the boiler power connection.
B Change PCB control board.
B Reconnect the appliance power connection.
B Switch ON the appliance.
B Restore service settings previously noted down.
RECTIFYING FAULTS
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