trane heat pump

Discussion in 'HVAC Heating & Cooling' started by sbilly, Jan 8, 2010.

  1. sbilly

    sbilly New Member

    Messages:
    6
    Location:
    nashville, TN
    I have a 2004 model 2.5 ton trane heat pump split system. I am having problems with the unit icing up in cold weather and not defrosting. I had a company out and said it was a bad control board and sensor $850 to repair. It did not repair. The unit will only heat up to about 70 in the house and its about 35 outside now in NC. I never hear the reversing valve kick in and hear that whoosh sound. I can put it into AC mode and it will defrost no problem.
    I call out another guy and says it is a bad compressor -. His explaination is that when he put the guages on both high and low side pressures were pegged out on the high side. He tried to open the valves manually and never shifted or pressure did not bleed down. He said the gas is just blowing through the compressor. He then jumped the pins on the board to shift the reversing valve and nothing happend. He said i would be better off replacing the whole condensor unit. I don't know what to do or who to believe. Should I call yet another person out to look at it?

    thoughts?

    billy@billyharrisfishing.com
  2. jimbo

    jimbo Plumber

    Messages:
    8,997
    Location:
    San Diego
    What do you have for back up heat? At 35 outside, you are approaching the outer limits of heat pump operation.
  3. sbilly

    sbilly New Member

    Messages:
    6
    Location:
    nashville, TN
    i have auxillery heat 10kw on the unit and emergancy heat on the unit 15 kw. The auxillery heat kicks in when a 2 degree differance is on the controller and I manually put it into emergancy heat if the aux. cant keep up. The unit will keep up during the day usually. Plus I went and got a electric heater just in case.

    Do you think this guy might be right with the bad compressor?
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