Medium
Lockout on Baxi Solo 3 PF

Your boiler has automatically turned itself off because it became too hot, acting as a safety measure to prevent damage.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

What the manual says

Manufacturer manual

Lockout light on indicates the boiler has overheated. Reset by turning control knob OFF, waiting 10 seconds, then turning ON.

From this model's manual
Verified against the Baxi Solo 3 Pf 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.

DIY fix possible

Turn the boiler control knob to the OFF position.Wait for at least 10 seconds to allow the internal sensors to reset.Turn the control knob back to the ON position and observe if the boiler fires up normally.

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