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Glow-worm — Flexicom HX / CX
Select a fault code
Fault Codes
F.22Low water pressure🔄 Try Reset
System pressure too low.
F.28Ignition failure🔄 Try Reset
Boiler failed to ignite.
F.29Flame loss🔄 Try Reset
Flame extinguished unexpectedly.
F.62Gas valve fault🔧 Engineer Required
Gas valve not closing correctly.
F.63PCB memory fault🔧 Engineer Required
PCB memory error.
F.73Pressure sensor fault🔧 Engineer Required
Pressure sensor out of range.
F.75Pump/pressure fault🔧 Engineer Required
Pump or pressure sensor fault.
F.77Condensate blockage🔄 Try Reset
Condensate pipe blocked or frozen.
F.83No temperature rise🔧 Engineer Required
No temperature rise detected.
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Prices shown are indicative — actual cost depends on your boiler age and policy type.
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Download ↗Glow-wormManuals & Documentation
Installation guides, user manuals, technical documentation
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