I have a Viessmann Vitodens 100-W boiler which was installed in March 2010 by a registered installer.
It has been fine up to now but since yesterday it has started to switch itself off every half an hour. The control panel shows the house shape but the heating mode and DHW heating icons go off.
There is no fault icon and the burner in operation and current burner output icons also go off. The radiators cool down completely.
The only way to get the boiler back on is to reset it. Once reset, the temperature starts to come back up and all of the icons reappear and the radiators become hot in a few minutes. After about 30 minutes, the system appears to switch off again. The room temperatures are cold, it's definitely not reaching the desired temperature before this happens.
Its freezing here at the moment so could really do with some advice, we have tried to phone the installer but it just goes to answer machine, with it being Christmas it could be they are away?
Many thanks
It has been fine up to now but since yesterday it has started to switch itself off every half an hour. The control panel shows the house shape but the heating mode and DHW heating icons go off.
There is no fault icon and the burner in operation and current burner output icons also go off. The radiators cool down completely.
The only way to get the boiler back on is to reset it. Once reset, the temperature starts to come back up and all of the icons reappear and the radiators become hot in a few minutes. After about 30 minutes, the system appears to switch off again. The room temperatures are cold, it's definitely not reaching the desired temperature before this happens.
Its freezing here at the moment so could really do with some advice, we have tried to phone the installer but it just goes to answer machine, with it being Christmas it could be they are away?
Many thanks