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worcester 35cdi combi hot water fault?

have worcester 35cdi combi heating working but hot water is not the light is flashing fast book says air flow fault likely cause but how do i fix problem
kf02val, November 2008
Tricky one to pin down, could be fault with fan, aps, flue, harness or pcb.

You'd need to be au fait with a multimeter and frankly some of what needs checking is mains electricity - I wouldn't feel comfortable talking someone through it.

Get an engineer.

BunSlinger, November 2008
link Click here to see other fixes for Worcester 35cdi.