Worcester ZWBR 7-30 R 30 HE PLUS COMBI Service Booklet page 23

C1
flashing.
Fan speed too low
Check
1. Fan lead connector properly con-
nected?
2. Is fan lead defective?
B Measure the fan lead for
continuity.
Is there continuity for each one of
the cores?
3. Fan defective.
4. The PCB control board is damaged.
7 181 465 347 (05.01)
Supplied By www.heating spares.co Tel. 0161 620 6677
Action
↓2.
yes:
B Power OFF the appliance.
no:
B Plug in connector.
B Turn ON the appliance.
C1? ↓2.
↓3.
yes:
B Power OFF the appliance.
no:
B Replace fan lead.
B Turn ON the appliance.
C1? ↓3.
B Power OFF the appliance.
yes:
B Unplug the connection wire.
B Replace fan.
B Plug the connection wire.
B Turn ON the appliance.
C1? ↓4.
↓4.
no:
B Make a note of the altered service function set-
tings (see table 1 on page 7) in order to keep
the altered values.
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 C1
23