Low
31 on Baxi 105e

Your boiler is signalling that it is currently operating in hot water mode, which is a normal state rather than a breakdown.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Domestic Hot Water Mode

From this model's manual
Verified against the Baxi 105e installation & service manual, page 7.
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

Check if a hot water tap is currently turned on elsewhere in the houseTurn off any running hot water taps to see if the display returns to normalIf the boiler remains stuck on this code while no water is running, perform a system reset

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