Unit is blowing cold. The LED on the board is blinking 4 times indicating the TCO (Temprature limit switch) is open. I isolated it and used a jumper to see if that would get it running but the board still blinks 4 times. Help please.
Trane package unit (Model # YCC036F1H0B) with control board CNF1634.
Mar 21, 2013
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