C6 and fault indicator LED are flashing. Fan speed too low

StepCheck Action
1.Fan cable connector correctly connected on fan?yes:go to step 2
no:▶ Switch OFF the appliance.
▶ Reconnect connector.
▶ Switch ON the appliance.
C6? go to step 2
2.Check power supply to appliance, check supply with all electrical appliances on. Is the supply voltage within tolerance (230 V AC 10)?yes:go to step 3
no:▶ Switch off some electrical appliances. go to step 3
3.Is fan cable defective?
▶ Switch OFF the appliance.
▶ Disconnect the boiler power
connection.
▶ Measure the fan lead for
continuity.
Is there continuity for each one of the cores?
yes:go to step 4
no:▶ Replace fan cable.
▶ Reconnect the appliance power connection.
▶ Switch ON the appliance.
C6? go to step 4
4.Fan defective.yes:▶ Switch OFF the appliance.
▶ Disconnect the boiler power connection.
▶ Un-plug the connection wire.
▶ Replace fan.
▶ Push on the connection wire.
▶ Reconnect the appliance power connection.
▶ Switch ON the appliance.
C6? go to step 5
5.The PCB is damaged.▶ Make a note of the altered service function settings (see table 4 on page 6) in order to keep the altered values.
▶ Switch OFF the appliance.
▶ Disconnect the boiler power connection.
▶ Change PCB control board.
▶ Reconnect the appliance power connection.
▶ Switch ON the appliance.
▶ Restore service settings previously noted down.

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