High
E01 374 on Ideal Mexico Super CF3 40-80

Your boiler's right-hand burner is failing to ignite, meaning the system cannot generate any heat for your radiators or water.

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: RH (RS 4125)

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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