Low
4 (Flashing Light) on Ferroli Tempra

Your boiler is working correctly and is simply waiting for your thermostat to tell it to turn the heating on.

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.

Technical description

Central heating standby

DIY fix possible

Check that your room thermostat is turned up high enough to call for heatEnsure your heating programmer or timer is set to an 'ON' periodCheck that any thermostatic radiator valves (TRVs) are turned to an open position

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