Low
31 on Potterton Performa 28i

Your boiler is signalling that it is currently operating in central heating mode, which is a normal status indication rather than a system fault.

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

Central Heating Mode

From this model's manual
Verified against the Potterton Performa 28i installation & service manual, page 6.
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 your room thermostat to see if it is calling for heatObserve if your radiators are warming up as expectedNo action is required if your heating is functioning normally

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