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Mend Glow-worm C30i Boiler Glowworm F9

what does f9 fault sign on glow worm c30i mean?

f9 flasing on the boiler panel

bola
August 2009
Glow-wormGlow-worm C30iHeating, Home Heating SystemsBoiler Glowworm F9
Hi try the presure sensor,isolate flow and return,drain boiler and remove presure sensor and check the small hole in botton of sensor is not blockedalso chech small hole in housing it sits in is not blocked,refit in reverse order

andy
August 2009

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