Low
Orange LED on on Sime Planet Dewy BFR

Your boiler is simply in standby mode and is working correctly, waiting for a request for heating or hot water.

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

Stand-by / off — normal stand-by condition

From this model's manual
Verified against the P3 Sime Murelle He System 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 your thermostat is turned up high enough to demand heatCheck that your heating programmer or timer is set to 'ON'Check if hot water is requested by turning on a tap

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