Worcester ZWBR 7-30 R 30 HE PLUS COMBI Service Booklet page 31

EA
and flashing.
During operation: flame not detected
Check
17. Check if the 20-pin connector lead
assembly is damaged.
18. The PCB control board is damaged.
1) See installation instructions
7 181 465 347 (05.01)
Supplied By www.heating spares.co Tel. 0161 620 6677
Action
B Power OFF the appliance.
B Change the 20-pin connector lead assembly.
B Turn ON the appliance.
B Press
, restart the appliance.
EA? ↓18.
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.
Rectifying faults
Error EA
31