Low
204 on Worcester Bosch Greenstar Ri

Your boiler has temporarily paused because the water inside is already hotter than what you have requested on your thermostat.

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

System waiting, primary flow temperature above set temperature point

From this model's manual
Verified against the Worcester Bosch Greenstar Ri installation & service manual, page 37.
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 and turn it up higher than the current room temperature.Ensure your radiator thermostatic valves are turned up.Wait 10-15 minutes for the boiler to naturally cool and restart itself.

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