High
Overheat indicator light on Baxi Solo 3 40 PF

Your boiler has detected that it got too hot or lost power, so it has automatically turned itself off to stay safe and needs to be reset.

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

The 'overheat' indicator light will be illuminated if the appliance needs resetting. This occurs should the system overheat or due to an interruption to the electricity supply.

From this model's manual
Verified against the Baxi Boiler Solo 3 Pfl 30 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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