Medium
10.iii on Chaffoteaux Sterling FF

Your boiler is struggling to maintain a steady temperature, causing it to rapidly turn its burner on and off rather than running smoothly.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

Rapid cycling high/low or high/low/off - By-pass if fitted not regulated

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

10.iView →10.iiView →

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