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

Steve, November 2008

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