Low
4 (Flashing) on Ferroli Tempra 12 18

Your boiler is working correctly and is currently in standby mode, waiting for a signal from your thermostat or hot water tap to start.

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 your room thermostat is set to a higher temperature than the current room temperatureEnsure your heating timer or programmer is currently in an 'ON' periodTurn up the heating dial on the front of the boiler if it is set too low

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