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Central heating starting and stopping within 2 minutes?

The central heating switches on then off again within a short space of time without the radiators getting hot.

POTTERTON COMBI BOILER PUMA 80
KEITH WAKE, December 2007
You need to check that the water pump is actually running - it sounds like the thermostat is shutting the boiler down because the hot water can't be dispersed.

John, December 2007
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