Low
4 (Flashing Light) on Ferroli Tempra 12 18

Your boiler is currently in standby mode and is working exactly as it should while waiting for a signal from your thermostat to provide heating.

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

Central heating standby

From this model's manual
Verified against the Ferroli Boiler Tempra 24 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

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' periodVerify the central heating dial on the boiler front panel is not turned to the off position

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