Low
203 on Worcester Bosch 1000

Your boiler is perfectly healthy and simply waiting for a signal from your thermostat to turn on the 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.

Technical description

Boiler in standby, no heat energy demand

What causes this fault?

Status code - normal operation

DIY fix possible

Turn up your room thermostat or smart controller settingsCheck that your hot water timer or programmer is set to 'On'Wait for a few minutes to see if the boiler fires up once a heat request is sent

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