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Posted on Oct 08, 2010

My LG Heat/Cool unit does not heat, AC cooling is excellent, how do I fix the heating part of unit?

5 Related Answers

fixr1st

  • 49 Answers
  • Posted on Nov 28, 2007

SOURCE: goodman ac / heat pump

Goodman energizes it reversing valve in the cooling mode. Usually in the "o" circuit of the thermostat wiring.You may have that wired hot somehow.

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Daniel Phillips

  • 63 Answers
  • Posted on Jan 25, 2008

SOURCE: GE Zoneline 2100 heater/ac won't heat/doesn't shut off

Unplug them and wash out the condenser coils outside then check them again. See if there is any change.

Anonymous

  • 124 Answers
  • Posted on Nov 04, 2008

SOURCE: Won't heat or cool

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.

Anonymous

  • 540 Answers
  • Posted on Dec 22, 2009

SOURCE: I have a ruud ac

We need model # and serial #s please!

Anonymous

  • 2 Answers
  • Posted on May 04, 2010

SOURCE: LG Ductless Mini Split System LAN125hv: Heat pump doesn't run.

CA: Compressor Discharge Sensor Fault

Contact a qualified service technician and have them replace this sensor.

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1answer

When I turn the heat on my wall unit the air door closes and the cooling light flashes 7 times. Will cool but will not heat.

Pls check indoor to out door 6 wirings. May be interchanged by mistake.

Example- Black wire in N with indoor but connected in C with out door.

And also check whether the sensor wire from indoor to out door has connected.

Tnx
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Check the controls, this unit most likely a reverse cycle air conditioner. It can be set to cooling or to heating. The conpressor is reversed to heat or running normally to cool.
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I just turned on our heat unit "FA4A AC/Heat Pump"

There probably isn't a reset button=magic fix. With it in heat pump mode and tstat set above indoor temp, check your outdoor unit to see if it's operating. If not, check all breakers to it. Can you see any ice accumulated on the outdoor unit? If it is running and not producing heat, turn the tstat to emergency/auxiliary heat. and the heat pump turned off to prevent damage. You'll need a service tech.
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You may not have a problem.
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Hi- Can not tell if my unites are straight cool / heat or a heat pump.

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