ravenheat csi85at fuse blowing on board?

The PCB commonly fails often giving one of the following symptoms:
Fuse on PCB blown - boiler does nothing.
Pump runs but fan not running or erratic.
Pump and fan run but gas valve doesn't open (but check air pressure switch).
Pump, fan & gas valve operate but no spark ignition.
Boiler lights but shuts down after a few seconds because it doesn't detect flame (but check electrode leads and condensate trap if conncted).

PCBs are available on Ebay.

Phil T
June 2010

if its blowing fuse you must a a fault either on the mains supply to the boiler or on the pcb,you need to check the electric with a multi meter

skippy
January 2010