Question about Heating & Cooling

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Lg ac running for one hour supper cooling after stop that compressor & odu fan. but supply is here in odu output chek that ovltage 226 v .but not running for odu components.what can i do

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  • Master
  • 2,133 Answers

Check wiring in out door connector, may be wire cut or merging between. Replace the wiring in the out door unit.

Posted on May 07, 2014

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

22yooper
  • 828 Answers

SOURCE: Compressor starts and doesn't stop

Relay for the compressor may be stuck ( Contacts welded) both the fan and the compressor should operate at the same time. Have the relay(s) checked and possibly replaced.

Posted on May 31, 2008

  • 124 Answers

SOURCE: High Pressure cutoff

YOUR OUTDOOR FAN MOTOR SHOULD NEVER SHUT OFF IN THE AC MODE. IT IS SUPPOSED TO SHUT OFF IN THE HEAT MODE WHEN ITS IN DEFROST. IF THE UNIT IS RUNNING IN COOL AND THE OUTSIDE MOTOR QUITS ,THE COMPRESSOR WILL QUIT SOON AFTER. EITHER THE RUN CAPACITOR FOR THE FAN IS BAD OR THE FAN MOTOR ITSELF IS BAD, IF CAP IS GOOD THEN THE MOTOR IS At FAULT. THE OUTDOOR PRESSURE SWITCH CAN ALSO OPEN IF THE INDOOR FAN MOTOR FAILS IN HEAT OR THE FILTER IS PLUM NASTY in heat OR THE INDOOR COIL IS PLUGGED UP in heat.. THE PRESSURE SWITCH USUALLY TRIPS AT 400 TO 425 SO ITS WORKING CORRECTLY. YOU MAY BE CONFUSING THE ISSUE SAYING THAT THE AIR IS HOT AND COLD INSIDE. IT IS COLD WHEN AC IS RUNNING HOT WHEN HEAT PUMP IS RUNNING IN HEAT BUT ESSENTIALLY not cold or hot if compressor isn't running, but a lot of folks describe the lack of cold air as hot when the compressor isnt running. but it basically is warm or house air temp.you test the capacitor with a capacitor tester or take it to motor shop and let them test it. odds are its a 5 , 7.5 or a 10. it should test within 10 % of rated value . ask for a RESCUE brand replacement motor. they are great ,reversable etc.carefully oil and sand the motor shaft and note exactly where the blade was located in relation to the grill so you get it back just the same. usually they wire up black to a leg of 220 power. white to the other leg of 220 power. brown and brown with white stripe to the capacitor.you can also pull whole fan shroud assembly on some units and take whole thing to motor shop and let them test motor cap, replace and all you do is return to unit and connect two power leads,

Posted on Oct 26, 2008

louislevel_2
  • 374 Answers

SOURCE: Samsung Ac compressor stops after 20 minutes and fan keep running

eventually,cycling process is doing done if the thermostat sense the configure temperayure set up it will trigger to stop your compressor motor as well as the blower fan,blower fan independenly to you compressor.if your thingking that your compressor is tripping off,check your operating current on one line using clamp ammeter and compare to the rated current that tag on
motor compressor body,if the current flow is higher than the rated current specified on compressor motor,well problem occured it will trip your compressor,because overload protector is becoming your thermostat.but if you got same current result it was cycling process.If tripping off maybe air is present in your system call qualified ac tech, to purge out air in system.

Posted on Mar 16, 2009

  • 587 Answers

SOURCE: RV air conditioner. Compressor running, fan stops before cool

The fan motor is getting hot and going off on the internal overload in the motor.
This is caused by either a low voltage, a bad capacitor, or tight or dry bearings in the motor.
To check the bearings turn the power off to the unit, then spin the fan blade if it spins freely then the bearings are ok.
To check the capacitor you will need some kind of tester or you can buy a capacitor and replace it, that's what a lot of people do. They usually don't cost very much.
To check the voltage you will need a voltmeter and measure the volts at the unit.

Posted on Jun 09, 2009

  • 534 Answers

SOURCE: Amana Cooling Condensing Unit fan won't kick on

be aware that not repairing this asap that you are causing yourself more problems First I would change out the fan capacitor and see if this could be the problem. Secondly if the capacitor isn,t the problem change out the motor . By continuing to allow the system to cycle like this the compressor will take a dive on you costing more . Good Luck

Dave

Posted on Aug 04, 2009

Testimonial: "Yes, it's dual run capacitor problem. I used a stick to spin the fan blades and it starts to slowly spin and up to normal speed, so motor is good."

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1 Answer

What is the minimum volts required to run 1.5 ton 5 star AC?


Low voltage will burn out all the motors Higher currents will ruin the start capacitor on the compressor and fan motors too. 220 vac is the minimum. You have to allow for inrush or start up current which most likely is the cause of the under voltage. You'll have to get a larger capacity stabilizer.

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AC Starts normally but after some time of coolinf compressor in outdoor unit trips. Compressor running light in indoor unit remains on and outdoor unit fan remains on. But no cooling. After a break of...


Probably overheating. Check the outdoor coil and see if it is stopped up with dust, grass etc. If so, disconnect power to the unit, and clean the condenser coil with water or air. Be careful not to bend the fins if you use a water sprayer.

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Hi. I recently installed 1.5 T, 3 * Split AC, LG. Whole day the AC works fine and no problem in cooling too. But once in 2 day outdoor unit start making thudding noise continously and does not stop for 4...


Hello

Sounds like the compressor is shuting down on high heat.There could be a couple reasons for this.
1 Check that proper voltage is being supplied to compressor.
2 Freon level may be low.This would be a service call.
3 Bad or intermitent connection at thermostat.
4 Main contacts to compressor sticking,usually burnt or pitted.

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1 Answer

Kenmore AC compressor on and off while outside unit fan running


If the out door fan keeps running and the compressor cycles off that would be the overload in the compressor.
What keeps the windings cool is the refrigerant back to the compressor.
For the overload to cycle it would have to be either not enough cooling back to the compressor or high amp draw, which could be the metering device (txv or orifice) or low on charge, or other things would be a bad capacitor, sometimes a bad start relay not staying open, when compressor gets up to speed or anything causing the compressor to draw high amps.
To check the refrigerant, he needs to check the superheat at the compressor it should be appoximately 12° to15°, and next time the compressor goes off if you shut the power off and feel the top of the compressor and if it's hot 130° or higher it's probably refrigerant.

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1 Answer

Ac fan does run


you mean it is not running, ok it will run the same time with the compressor, monitor if the compressor clutch engage while fan not ,check supply going to the fan if present. The fan is damaged and need to be repair.

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Compressor fan and compressor not running new 2 yr old system puron


No power to outside unit. Check to see if contactor on outside unit is pulled in. Most AC units inside have float switch. When the drain stops up it shuts off outside unit. Located in overflow or underneath unit. No Problem Rusty

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2 Answers

The fan in the outside part of my AC doesn't run


On most air cons there is a time delay before the outside unit starts and LG are no exception. This function means that erratic power supplies wont kill the compressor (outside bit). If the internal fan runs for a few minutes and then the trip goes then it sounds like you have a faulty compressor. This tends to be a scenario for a failed compresssor. What you can try is putting the unit on FAN ONLY (no cooling) and see if the power stays on. If you are more technically competent you could isolate the power to the compressor on the external unit (AFTER ISOLATING THE POWER TO THE WHOLE SYSTEM). And then try putting it on cooling to see if the external fan works. If the trip is not thrown then you have a faulty compressor. I would also like to point out that most A/C manufacturers offer a three year parts warranty so you may have some sort of cover depending on the age of your unit. In which case get an aircon guy out who knows what they are doing (personal reccomendation is always a good starting point). Hope this helps.

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