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why does the central heating come on when the thermostat is turned off alon?

why does the heating remain on when the thermostat is turn down and the heating is turned off

Steve
November 2008
Heating, Home Heating SystemsHeating Turned Turn
The thermostat could be faulty. If you disconnect any one of the two wires in the thermostat the heating should stop. If it does the thermostat is faulty. If it doesn't, you'll need an electrician to sort out the wiring. This is the only explanation I can offer without a good deal more information.

Bob Chett.
November 2008

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Heating On When Thermostat Off? - Common Causes