BoilerFaultCodesChaffoteaux System 40 60 Fault Codes
System Natural Gas 11.7-17.6 kW Discontinued
This boiler uses indicator light combinations
Note which lights are on, off, or flashing and at what speed. Match the combination to the table below. Do not reset until you have noted the pattern. How to read fault codes →
Most common fault codes
4 Red indicator Red lockout indicator bulb
Your boiler has failed to light the burner on start-up and has safely shut down to prevent gas from flowing without a flame.
May be DIY safe · £100-250
Your boiler has stopped working because it cannot light its internal flame safely.
Gas Safe engineer required · £120-250
Your boiler has failed to light the flame after multiple attempts, so it has automatically shut off its gas supply as a safety precaution.
Gas Safe engineer required · £120-250
All 4 fault codes
Chaffoteaux System 40 60 is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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