Low
03 on Grant Spira

Your boiler is currently idle and waiting for a signal from your thermostat or internal settings to tell it that your home needs more heat.

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

BOILER WAIT THERMOSTAT: Boiler is in standby awaiting a switched live input signal or boiler temperature to drop below set point.

DIY fix possible

Check your room thermostat is turned up to a temperature higher than the current room temperatureEnsure your heating programmer or central heating timer is set to 'On'Check that any external weather compensation sensors are not faulty or obscured

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