BoilerFaultCodes
Glow-worm Boiler Fault Codes
3,183 fault codes across 72 Glow-worm boiler models — explained in plain English.
UK boiler brand owned by Vaillant Group. Popular budget-to-mid-range option.
Just want the most common Glow-worm problems?
The top 8 faults across the whole Glow-worm range — causes, DIY checks, repair costs.
High-severity Glow-worm fault codes
01 02 03 04 05
Your boiler has stopped working because it cannot light the gas burner to provide heating or hot water, usually because the gas supply is interrupted or the ignition spark has failed.
30ci Plus
Your boiler has stopped working because the fan isn't starting up to safely clear waste gases from the system.
30ci Plus
Your boiler has detected an issue with how it moves air and waste gases through the system, causing it to shut down for safety.
30ci Plus
Your boiler has stopped working because it cannot light the gas needed to provide heating and hot water.
30ci Plus
Your boiler has shut down because it has detected it is getting too hot, usually due to a lack of water flow or a circulation blockage.
30ci Plus
All models
72 Glow-worm boiler models
30ci Plus
Combi Discontinued
Glow-worm Fuelsaver 56 3E
Regular Discontinued
Betacom
Combi Discontinued
Flexicom 18sx
System Discontinued
Flexicom cx
Combi Discontinued
Fuelsaver Complheat 40 55
Regular Discontinued
Hideaway 40B
Regular Discontinued
Glow-worm Micron 100FF 120FF
Regular Discontinued
Micron 30ff
Regular Discontinued
Space Saver 30 40 50
Regular Discontinued
Space Saver Compleheat 30 40 50
Regular Discontinued
Swift Flow 100
Combi Discontinued
Ultracom 24cx 30cx
Combi Discontinued
Xtrafast 96 120
Combi
Xtramax HE
Combi
Energy7 System
System
Betacom C
Combi Discontinued
Compact (2006-2011)
CombiSystem Discontinued
Ultracom 2 CXI
Combi Discontinued
Ultracom 2 SXI
System
Ultracom 2 HXI
Regular Discontinued
Ultracom cxi
Combi Discontinued
Ultracom sxi
System
Ultracom 35 Store
Combi Discontinued
Flexicom hx
System Discontinued
Flexicom sx
System Discontinued
Xtrafast 96
Combi Discontinued
Xtrafast 120
Combi Discontinued
Ci Range
CombiSystem Discontinued
Ci Plus
CombiSystem Discontinued
CXi
Combi Discontinued
Ultimate3 Combi
Combi
Ultracom hxi
Regular Discontinued
Micron 40FF
Regular Discontinued
Micron 50FF
Regular Discontinued
Micron 60FF
Regular Discontinued
EnergySaver
Regular Discontinued
EnergySaver Combi
Combi Discontinued
Ultimate
CombiSystem Discontinued
Space Saver
Regular Discontinued
Hideaway 80
Regular Discontinued
Hideaway 100
Regular Discontinued
30cxi
Combi Discontinued
38cxi
Combi Discontinued
Flexicom hxi
Regular Discontinued
23c
Combi Discontinued
CXi / CSi
CombiSystem Discontinued
Flexicom 56 3E
Combi Discontinued
Flexicom 24c / 28c
Combi Discontinued
Easicom3 Combi
Combi
Jaguar Combi
Combi Discontinued
Ultimate 3 25R
Regular
Energy7 Combi
Combi
Energy7 Regular
Regular
Flexicom CXi
Combi Discontinued
Ultimate3 System
System
Easicom3 System
System
Compact
Combi
MicraCom
Combi
Betacom4
Combi
Essential
Combi Discontinued
Energy
Combi Discontinued
Energy System
System Discontinued
Energy Regular
Regular Discontinued
Sustain 12s
System Discontinued
Easicom 24
Combi Discontinued
Hideaway 50BFF
Regular Discontinued
Hideaway 60BFF
Regular Discontinued
Hideaway 50CFF
Regular Discontinued
Hideaway 60CFF
Regular Discontinued
Swiftflow 100
Combi Discontinued
18si
CombiSystem Discontinued
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