High
398 055 on Ideal Mexico Super CF3 40-80

Your boiler's main burner is not receiving the correct flow of gas needed to ignite and stay lit, meaning your heating system will not work.

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 4100)

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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