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F1 fault Glow worm 24ci combi boiler?

How do i fix an F1 fault on Glow worm 24ci combi boiler?
Sarah, February 2007
heating keeps coming on even when turn off on the settings

Joseph, July 2012
my boiler keeps loosing its water pressure?

terry, December 2009
lose pressure, when heating goes off, it is ok with hot water

stephen, December 2009
f12 fault glow worm 24ci combi boiler

d price, November 2009
F1 is caused by no gas or no detection, also known as lockout. Could be gas filter blockage, flame sense electrode, or pcb.

get the user manual here.:-

http://www.glow-worm.co.uk/manuals/pdf/24ci-18si.pdf


please note , if you are in UK it is illegal to break into any gas connection unless you are qualified to do so.

Pete, February 2007
link Click here to see other fixes for Glow-worm 24ci.