Alpha Hot Water problem

[manxtapper]

Hi

I have an Alpha Cd32 Combi

Sometimes it is not firing on hot water and there is a clicking noise coming from the pcb.

When the boiler is set to CH the hot water works fine.

I replaced the diaphram in the diverter valve 10 months ago and I have tested the flow switch which seems to be fine.

I'm thinking it is the relay that is clicking, any ideas? Don't want to replace the pcb incase it is something less costly.

I'm Gas Safe registered and can pm my details if required.

thanks
Tom

 

[Whn1]

Pm your gas safe details to Redsaw or gasman.

 

[manxtapper]

Have pm'd details to Redsaw, thanks

 

[Alpha man]

Flow switch!

 

[Petefinny]

Clicking coming from your PCB could be the ignition lead loose and sparking on the board and not coming up through the lead.