BoilerFaultCodesWhat the manual says
Manufacturer manualNo heating demand: Summer mode, eBUS controller, waiting period
From this model's manual
Verified against the Glow Worm/Glow Worm Betacom4 installation & service manual, page 35.
DIY fix possible
Check your room thermostat or smart controller settings to ensure they are set to a temperature higher than the current room temperatureEnsure your heating programmer is switched to 'ON' or 'Timed' modeCheck if your boiler is set to 'Summer' mode and switch it to 'Winter' or 'Heating and Hot Water' mode if you require radiators
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Related fault codes
All 89 fault codes on the Betacom4
Seeing a different code? Every code this model can display, in one place.
F.00F.01F.10F.11F.13F.20F.22F.23F.24F.25F.27F.28F.29F.32F.49F.61F.62F.63F.64F.65F.67F.68F.70F.71F.72F.73F.74F.75F.77F.78F.83F.84F.85F.86F.87F.88F.89F22P.01P.02P.03P.04P.05P.06P.07S.0S.01S.02S.03S.04S.05S.06S.07S.08S.10S.11S.13S.14S.15S.16S.17S.20S.21S.22S.23S.24S.25S.26S.27S.28S.30S.32S.33S.34S.39S.41S.42S.46S.53S.54S.88S.91S.96S.97S.98S.99S.108S.109