Low
15 on Sime Planet Super 4 WM

Your boiler is currently indicating that it has reached the pre-set temperature target for your home and is temporarily pausing its heating cycle.

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

Pre-set ambient temperature value

From this model's manual
Verified against the Sime Planet Super 4 Wm installation & service manual, page 13.
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 set to a temperature lower than your current room temperatureIncrease the temperature setting on your room thermostat or boiler control panelWait for the ambient room temperature to drop naturally to trigger the boiler to restart

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