Low
2968 O on Worcester Bosch Greenstar 8000+ GR8701iW 32 C

Your boiler is automatically topping up its internal water pressure to keep the system running smoothly.

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

Refilling system pressure. The auto filling function is active. The filling valve opens in order to feed fresh water to the heating system automatically.

From this model's manual
Verified against the Worcester Bosch/Worcester Bosch Wb 47114 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

Wait a few moments for the automatic filling process to finish.Check your system pressure gauge to see if it stabilizes in the green zone (usually 1 to 1.5 bar).If the message does not clear after a short while, reset the boiler according to the user manual.

Find a Gas Safe engineer
Search the official register →

Avoid the next call-out bill

Monthly cover means no unexpected bills when your boiler breaks down.

Approved partner
Domestic Appliance Guard
Unlimited call-outs, 24/7 helpline, no price-hike promise
Get a quote →

Affiliate links. We may earn a commission at no extra cost to you.

Related fault codes

All 99 fault codes on the Greenstar 8000+ GR8701iW 32 C

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

Related guides you might find useful