202 Low

Worcester Bosch 202 Fault Code

The Worcester Bosch 202 fault code means: your boiler is temporarily resting to prevent it from turning on and off too frequently, which helps protect the internal components from unnecessary wear.. It appears on 15 Worcester Bosch models in our database.

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 anti-cycle mode

What causes the Worcester Bosch 202 fault?

This occurs when your boiler reaches its target temperature too quickly and enters a protective rest period to avoid 'short-cycling'. It usually happens because the heat produced by the boiler cannot be moved away fast enough, often due to radiators being turned off or a highly efficient home needing very little energy. The boiler stays off for a few minutes to protect its internal parts from the mechanical stress of constant restarting.

This is more common during the milder months of spring and autumn when your home requires only a small amount of heat to maintain its temperature.

DIY fix possible

Check that your room thermostat is set higher than the current room temperatureEnsure all radiator valves (TRVs) are turned open to allow heat to circulateWait up to 15 minutes for the anti-cycle timer to expire and the boiler to restart automatically

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Worcester Bosch models that show the 202 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Worcester Bosch 202 fault code information on this page is sourced and cross-checked against the official Worcester Bosch service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026