Peter asked ... How can I mend a Powerwasher PRO PRO1800PWE?    |    Mike asked ... Bosch WTA74200GB Vented Dryer?    |    Stuart G asked ... C3 Front Wiper control problem?    |    Clare S asked ... Repair Electriq dehumidifier?    |    Bob asked ... Charger fault?    |    Click here to ask your question

the boiler is making a loud buzzing noise when on standby?

the boiler is making a loud buzzing noise when in standby (not used) mode. The noise is coming from the top left side of Britonny Flexiflue - where the fan and printed circuit board are.I suspected the fan so I stopped the fan manually by holding it but the buzzing noise did not stop. I also disconnected the power and moved the fan manually - no noise

What is causing the noise? The PCB? It seems to be too loud to be coming from the PCB

Please help-
P. Patel, June 2009