Help..
Pilot is lit, pump runs constantly, won't fire for htg or hot water (flow switch makes OK)
Is this likely to be a PCB fault?
thanks in advance![Frown :( :(](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Pilot is lit, pump runs constantly, won't fire for htg or hot water (flow switch makes OK)
Is this likely to be a PCB fault?
thanks in advance