Low
208 on Worcester Bosch Greenstar Ri

Your boiler is currently set to a special testing mode used by engineers to calibrate the system, rather than operating in its normal heating mode.

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

Appliance in service Test mode (Min/Max)

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

Locate the 'Service' or 'Test' button on the boiler control panel.Press the button to toggle the mode off, or simply turn the boiler off at the fused spur for 30 seconds and switch it back on to reset.Ensure no dials are stuck in the 'test' or 'max' position.

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