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Boiler Fault Codes
Select your boiler brand
Most popular
All brands A–Z
Alpha
6 models
Ariston
4 models
Biasi
3 models
Chaffoteaux
2 models
Ferroli
6 models
Grant
2 models
Heatline
2 models
Intergas
3 models
Keston
2 models
Navien
3 models
Ravenheat
2 models
Remeha
5 models
Saunier Duval
3 models
Viessmann
6 models
Vokera
4 models
Want step-by-step diagnosis guides?Brand-specific troubleshooting guides for Worcester Bosch, Vaillant, Baxi, Ideal and more.
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Only a Gas Safe registered engineer may legally carry out gas work in the UK. These guides help you understand your fault code — they are not instructions for DIY gas repairs. Always verify engineers at gassaferegister.co.uk.
Only a Gas Safe registered engineer may legally carry out gas work in the UK. These guides help you understand your fault code — they are not instructions for DIY gas repairs. Always verify engineers at gassaferegister.co.uk.