• Heat won't turn off

    Nov.9.2009

    My heat won’t turn off even when I switch to the air conditioning or turn the heat off. I have electric.

    Brenda, Chester, SC

    Try turning the thermostat to the “OFF” position. If the heat continues to operate, you have a problem. Among the possibilities are a faulty thermostat, a short between the R and the W terminal (R and W are your thermostat wires) that is keeping the heat on, or a stuck relay or sequencer in the furnace. Since there are a host of possible issues, the best course is to contact a professional HVAC contractor, like ARS/Rescue Rooter of Columbia, SC, at (803) 754-0600, for a preseason system check at your earliest convenience.

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