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glow worm 18HXi central heating boiler ?

boiler operates well for periods of days then for some reason will not ignite goes through ignition sequence th ree times then gives F4 code you can then reset .
any ideas on the cause.?

m.l.g., October 2010

home Fix label Heating label_important Home Heating Systems

Fix Fault - Heating

home label Heating label_important Home Heating Systems

Fix Fault - Heating

home label Heating label_important Home Heating Systems

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home Fix label Heating label_important Home Heating Systems

glow worm 18HXi central heating boiler ?

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glow worm 18HXi central heating boiler ?

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glow worm 18HXi central heating boiler ?

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