Low
201 on Worcester Bosch Greenstar 8000+ GR8701iW 30 S

Your boiler is simply letting you know that it is currently busy heating up water for your taps or shower.

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

Boiler in hot water mode

From this model's manual
Verified against the Worcester Bosch/Worcester Bosch Wb 47115 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

No action is required as this is an operational status message rather than a breakdown.Check that your hot water taps are fully turned off.Wait for the boiler to finish its current cycle, after which the code should disappear.

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Related fault codes

All 103 fault codes on the Greenstar 8000+ GR8701iW 30 S

Seeing a different code? Every code this model can display, in one place.

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