High
62 on Alpha E-Tec Plus

Your boiler has lost its saved settings for the air and gas mixture and needs to be professionally reconfigured to run safely and efficiently.

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.

What the manual says

Manufacturer manual

Full boiler calibration required - This may occur when the PCB is replaced or if the parameters are altered in the air/gas section

From this model's manual
Verified against the Alpha E Tec Plus 28 installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

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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