Fan Speed Too Low - Worcester ZSBR 7-28 ICS1 Service Booklet

C1
flashing.

Fan speed too low

Check
1. Fan lead connector properly con-
nected?
2. Fan lead defective?
3. Fan defective?
4. The PCB control board is damaged.
7 181 465 347 (01.07)
Action
↓2.
yes:
B Power OFF the appliance.
no:
B Plug in connector.
B Turn ON the appliance.
C6? ↓2.
yes: B Power OFF the appliance.
B Replace fan lead.
B Turn ON the appliance.
C6? ↓3.
↓3.
no:
B Power OFF the appliance.
yes:
B Plug the connection wire.
B Replace fan.
B Plug the connection wire.
B Turn ON the appliance.
C6? ↓4.
↓4.
no:
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.
Rectifying faults
23