Home/Boiler Fault Codes/Worcester Bosch C6
WORCESTER BOSCH FAULT CODE
Worcester Bosch C6
Indicates a fan fault — the boiler's fan is either running at the wrong speed or has stopped working, which prevents safe combustion.
WHAT C6 TYPICALLY INDICATES
Indicates a fan fault — the boiler's fan is either running at the wrong speed or has stopped working, which prevents safe combustion.
WHAT TO DO
There is no safe homeowner check for this fault. This is not a DIY fix — it requires a Gas Safe registered engineer to diagnose and repair safely.
A NOTE ON GAS SAFE REGISTRATION
Any work on the gas side of a boiler in the UK legally requires a Gas Safe registered engineer, it isn't optional. Our engineers are fully Gas Safe registered, and you're always welcome to ask to see ID on the day. This page is general information about what a fault code typically indicates; it is not a substitute for an engineer diagnosing your specific boiler.
Seeing Worcester Bosch C6 on your boiler?
Tell us the code and your postcode. A fully Gas Safe registered engineer will diagnose the actual cause before quoting a fix.
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