DIY Doctor

Hot water but cold radiators

Postby Sergetov » Wed Oct 21, 2009 7:45 am

Hi - I have a 5 year old Worcester Combi R28 HE boiler which I have tried using for central heating for the first time in around 8 months. While the water heater has been used all over the summer, on using the central heating this week none of the radiators warm up at all (they are all cold all over). I have tried bleeding them all to no effect. I have checked the thermostat control and power to the boiler and can hear it whirring when the heating is switched on.

The fault code is C1 which according to the manual means that the fan speed is too low

Any ideas?
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