Question about Amana Comfort Zone 12M32PBEH Air Conditioner

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Won't heat or cool

The unit turns on and fan runs. When I select heat or cool, it sounds like the compressor is trying to start, but does not and no heat or cooling is produced.

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As a general rule you sound like you have a compressor that is mechnically locked up. in other words it can't free itself from a stationary position and begin pumping and moving the piston. this is caused by one of several things. first kill power ,and carefully, and methodically examine all wires and terminal connections. be sure all are clean , snug and not burnt off etc. even the ones attached to the compressor itself. the compressor wire cover comes gently off and is usually held in place by a spring clamp be sure to replace when your done checking. if all wires check good then go to step two. that is a check of the capacitors. the silver metal large capacitor is the run capacitor. it keeps the compressor power in the windings out of phase so it runs same way everytime. it has a rated value stamped on its side. it should check with a volt meter that checks capacitors at not less than 90 percent of its rating . a 60 needs to check no less than 54 microfareds. etc. some capacitors have a common input side and a dual output side. they are labeled on top where the wires connect.one goes to the condensor fan and the other goes to the compressor. the larger circuit ,common in, to herm out is for the compressor. if in doubt label all wires , make a diagram and remove it and take to an electric motor shop and let them test it. in addition to the run capacitor that keeps the compressor going, you may also have a start cap that is usually black plastic. they have a" Yes by gosh you will" start function and store up voltage and deliver a powerful boost on start up to make the compressor get going. it can be tested the same way. be sure to ground the capacitors before testing after power is turned off by shorting across the terminals to bleed off any stored voltage. , with a screwdriver blade. by the way if you look at the silver run capacitor and its swollen up or bloated looking then its bad. you'll know what i mean if you ever see one. looks like it has the mumps. they really puff up. top and bottom should be normally close to flat. if all that checks good then you must apply and amp probe to the black wire going to the compressor. when it tries to start observe the amp draw. if it is like 48 to 65 amps then the compressor is mechically locked up and probably needs replacing. if you don't have a plastic hard start capacitor and relay you can add one and it can many times break the compressor loose and you can get a few more years out of a compressor thats getting weak. try a T05 hard start kit or a KS1 hard start kit. to5 for up to three ton and a ks1 for 4 and 5 ton. simple to install .be sure the start relay is positoned correctly, instructions are on the package. good luck let me know outcome.

Posted on Nov 04, 2008

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tnx 4 using fixya,

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