High
398 051 on Ideal Mexico Super CF3 40-80

Your boiler has detected a communication failure with the component that controls the gas flow to the burner, meaning the boiler cannot fire up to provide heat.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Main burner injector (RS 485)

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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