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BamaUltra's avatar
BamaUltra
Explorer
Nov 06, 2019

A/C ghosts??

Have a 2003 36' Gulfstream Ultra Supreme. Never had issues with A/C's b4 & don't know anything about them? I do have an issue with the front unit now.Unit works as intended when controlled by thermostat. But, when Off @ thermostat & plugging up 2 shoreline; 50 amp service; &/or running power with 5500 On an generator, as soon as u plug in or generator is initiated..... the front unit Air comes on; thermostat OFF;sounds if it trying to come ON?? Trying, because it's only running w/NO air coming out??? As soon as power to Coach, it runs 4 2 to 3 mins. and off for 20 min then cycles like that throughout having power source?? I checked Converter, it was fine, but upgraded to another that has 3 step charging instead of single phase. I'm cautious of covering back up with this problem. Could u help??
Class A

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  • Chris_Bryant's avatar
    Chris_Bryant
    Explorer II
    Nov 06, 2019
    Sounds like the compressor relay is welded closed on the upper circuit board. You should shut the breaker to it, as it will run the compressor and cycle on the overload as it overheats.
  • enblethen's avatar
    enblethen
    Nomad
    Nov 06, 2019
    I would verify that the power to the rig is correct.
    Test the system to insure the neutral is in good shape.
    One of the small three light tester may aid in this test.
    best way is to use a volt meter. test at the 120/240 volt distribution panel.
    First item that could be issue is the neutral relay in the transfer sitch.

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