Low
270 on Worcester Bosch Greenstar Ri

Your boiler is currently resetting or performing its initial startup sequence, which is a normal process it goes through after being switched on.

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

Power up mode.

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

Wait 5 to 10 minutes to see if the boiler begins normal operation automaticallyIf the code persists, turn the boiler off at the fused spur switchWait 30 seconds and switch the boiler back on to initiate a fresh startup sequence

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