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ravenheat csi85at fuse blowing on board?

my ravenheat boiler has developed a problem. the main fuse on the pcb keeps blowing. it blows when the boiler starts to fire. it is 2 years old. has anyone had this problem before?
steve, January 2010
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
link Click here to see other fixes for Ravenheat CSI85AT.