I have a Tempstar T9UHX100L201A 90 % furnace. I have noticed that mid operation the unit shuts down and quickly restarts. I have noticed it also happens during the cooling cycle and Heating cycle. While in the cooling cycle the unit including the condenser will shut down for three seconds and quickly restart. When in the heating stage I have notice the click of the thermostat disconnecting and quick initiating a call again. I have removed the wires from thermostat and installed a jumper lead to see if it would correct the problem it has not. Maybe someone has had a similar glitch. Thanks for you time.
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