BoilerFaultCodesWhat the manual says
Manufacturer manualBoiler in anti-cycle mode
Shared across the Greenstar 8000 Style range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
DIY fix possible
Check that your radiators are turned on and not blocked by furnitureEnsure your room thermostat is set to a temperature higher than the current room temperatureWait 5-10 minutes to see if the system clears the message automatically as it stabilizes
Find a Gas Safe engineer
Search the official register →
Boiler cover options
Avoid the next call-out bill
Monthly cover means no unexpected bills when your boiler breaks down.
Approved partner
Get a quote →
Domestic Appliance Guard
Unlimited call-outs, 24/7 helpline, no price-hike promise
Affiliate links. We may earn a commission at no extra cost to you.
Related fault codes
All 33 fault codes on the Greenstar 8000 Style Combi
Seeing a different code? Every code this model can display, in one place.