Low
265 on Worcester Bosch Junior 28i

Your boiler is temporarily limiting its power output because it is producing more heat than your radiators or taps can currently take away.

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

The boiler is waiting in response to a heat demand – the boiler regularly switches to partial load

From this model's manual
Verified against the Worcester Bosch Junior 28i 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

Ensure all radiator valves (TRVs) are fully open to allow heat to circulate.Check that the boiler pressure is between 1 and 1.5 bar on the pressure gauge.Deep-clean any magnetic system filters if you are familiar with the process.

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