Furnace won't shut off.Post created: 2016-05-02 Type of Equipment: Furnace Views: 215
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On 2016-05-03 Gary wrote:
This is usually caused by a relay or a limit switch on the furnace's control board. It could also be a problem with the thermostat. The first thing you should do is check the batteries on your thermostat if it is a digital model. If the batteries are going bad, it can cause the furnace to run continuously without shutting off.
If the problem is due to a problem with the control board, it should be addressed by an HVAC professional. If you'd like to have a contractor take a look at this, we can help you find one, here.