Low
2.0 on Worcester Bosch Greenstar R29 40 HE

Your boiler is operating normally and there is no fault present.

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

Normal mode / Operating mode setting

From this model's manual
Verified against the Worcester Bosch Greenstar 25he 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 your boiler is functioning as intended.

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Avoid the next call-out bill

A cover plan would handle faults like 2.0: no call-out fees, no surprise bills.

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