BoilerFaultCodesWhat the manual says
Manufacturer manualBoiler in anti-cycle mode
Shared across the 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
Wait 15 to 30 minutes for the countdown to finishEnsure your room thermostat is turned up higher than the current room temperatureCheck that at least two radiator valves are fully open to allow heat to move away from the boiler
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Related fault codes
All 93 fault codes on the 24 RSF
Seeing a different code? Every code this model can display, in one place.
2 pulses5 pulses9A 3629U 233200200 O201201 O202203203 0204204 O208208 0212224 V226227 V228 V235260265268270283284305305 0306 V328356360360 V1010 O1017 W1021 B1022 B1037 W1065 B1068 W1073 W1074 W1075 W1076 W2920 V2924 V2925 V2927 B2946 V2948 B2950 B2963 B2964 B2965 B2966 B2967 B2970 B2971 BA1A7A8B1C6CC 800E2E9EAEA 227EA 229EA 261EF 349EH 258F0F2 1.25ATF7FAFA 306FA 364Fast flashFB 365FDFD 231Light offLight onNo lightrET1T2T3T4T6