I had a Trane XR 11 heat pump installed with the matching air handler. For the second time in two weeks I noticed no heat coming from the vents. I checked the air handler and found the Freon line had snow all over it and the coils in the air handler and the compressor outside were iced over. The first time this happened my installer came out and replaced the defrost board.

Does anyone suspect there is a problem with some other component than the defrost board. I doubt the new defrost board failed as well.

Thanks for your input

PS - I will never own another Trane again. I should have went with the Goodman and saved a couple of hundred bucks.