Question about Heating & Cooling
Hello,KY the defrost function is not working.The wire goes to frost sensor or the outside unit control.It is LOW voltage wire.Turn the unit off and carefully look for a abandond/bare wire.Maybe a single wire with a wire nut/cap or splice.Reconnect the wire as there should be no EXTRA wires.The unit will make a strange noise when restarted.Good luck.
Posted on Apr 23, 2010
Testimonial: "Thank you. I will try this tomorrow."
Your unit will have wires that need to be wire nut connected to the thermostat wire coming from your air handler.
The colors of the wires out your outdoor unit are:
Brown or Black - Common
Red - Hot wire
Yellow - Contactor
Orange - Reversing Valve
White - Electric Heat (used to turn on electric heat when in defrost mode).
So, in summary, you need only 5 wires for your Heat Pump to function properly.
You may be having a problem with the defrost function that could include a failed defrost thermostat or a failed defrost board.
Also check to ensure that your unit will run in air conditioning mode and blow cold air (this will ensure the reversing valve is working).
If the ice starts to form in an uneven pattern around your unit, it is possibly low on refrigerant.
I'll look forward to hearing back from you with further questions, comments, concerns. :-)
Posted on Apr 24, 2010
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Posted on Jan 02, 2017
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