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Power is there checked it we overrode everything to see if we could get the compresser to work

Fan turns on but not by its self...the compresser still will not turn on...please help

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Ok You need to find out if the compressor is getting the power it needs to run. It's a little tough to get to and if you slip you can get a really nasty shock so be super safe and careful.. Turn the 220v supply voltage off to the condenser, remove the service panel from the unit. Find the compressor and remove the compressor terminal access cover. There's a red black and yellow wire and/or the terminals are labeled either inside the compressor terminal cover or by the terminals: (R)-Run-Red wire, (S)-Start-Yellow, (C)-Com-Black wire.
You need to set your volt meter in the 220vAC Rng and remove the red wire from the (R) terminal and connect it to the red lead of your meter then remove the black wire from the (C) terminal and connect it to the other meter lead being careful that neither connector can touch any metal parts when the circuit is energized. Turn power on to the unit if your meter shows 210 -230v Then your compressor is bad or of on internal overload.
Internal overload can sometimes take an hour or so to cool off and reset. Turn the power off to the unit and check for continuity between each compressor terminal. If you have continuity then check from (R) to Grnd. If theres is continuity between terminals but not to ground then replace any run and start capacitors reconnect wiring and try running the compressor again with an amp meter on the yellow wire so you can see whats happening.
If your not getting 220v then backtrack, Check the wireing harness to the compressor the relay and so on till you find the 220v your compressor is looking for :) GL Hope this was somewhat helpful.

Posted on Jun 09, 2008

  • Wes Rackley Jun 09, 2008

    This is a new unit and you said the fan runs but not by it self?
    Do you mean that when you turn the fan by hand it starts spinning you probably do not have the required 220v line voltage to the unit.
    It sounds like you may have an improperly wired installation and could be a potentially dangerous situation you need to get a qualified technician on location to help you straighten this out. GL!



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