High
LED 2 on Myson Midas 100

Your boiler is struggling to clear air through its internal system effectively enough to safely ignite the burner.

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

Will remain on until the fan has produced enough air for complete combustion at high rate - high rate air detector.

From this model's manual
Verified against the Myson Midas 80 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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