What the manual says
Manufacturer manualMax. combustion point reached (the maximum burner time is reached)
From this model's manual
Verified against the Worcester Bosch/Worcester Bosch Greenstar 4000 Combi installation & service manual.
DIY fix possible
Wait 10 to 15 minutes to allow the boiler to cool down and automatically reset.Turn the heating or hot water off and on again using your room thermostat or boiler controls.If the code persists, try turning the boiler off at the fused spur, waiting one minute, and turning it back on.
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Related fault codes
All 92 fault codes on the Greenstar 4000 GR4700iW 25 C
Seeing a different code? Every code this model can display, in one place.
200201202203204208214224227228232233234235237238242245249250251252253254258259262263265268269273281283284305306353357358360362363101010171018101910211023103710651068107010711072107310741075107620852908291029142915291629202923292729282931294029462948294929502951295229572961 V2962 V2963 B2964 B2965 B2966 B2967 B2968 O2969 –2970 B2971 B2972 V3071 –