Have HVAC Questions? Ask an HVAC Expert for Answers
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What is happening? Does the unit run?
It could be on a compressor saver delay have you let it go for about 10 minutes to see if it comes on?
No just leave it on and do not mess with the thermostat and see what happens.
OK check the fuse in the airhandler and see if the fuse on the board is blown. That can cause that issue. Also do you have a condensate pump?
Ok check the condensate pump if the float is tripped that will cut out the outside unit, the fuse should be on the board in the airhandler.
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You would have to check the pump and see if the float is triggering on and off when the water is it it and it pumps out. If the float is stuck or bad it will kill power to the outside unit so no more water goes into the condensate pump...you should see the yellow thermostat wires attached to the pump switch.