Question about LG LSC121PMA Split System Air Conditioner

1 Answer

Air conditioner my air conditioner is saying c6 and the fan outside is not working and when you turn the power off at the main switch it works for awhile

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 236 Answers
Re: air conditioner

Remote control units have diagnostic program in the
control, after 3 to 5 minutes of operating if the diagnostic
tools detect abnormal operation, then its shutdown the unit
to protect from damage. Thermistor sensor is one of the
parts that detect the operation of the unit. Out of range
or defective thermistor can shut the operation of the unit.
If your indoor and outdoor is clean start the unit in cool mode and monitor the outdoor pipes. If your suction pipe is icing or dry then your unit is under charge, but if your suction is cold and sweating then the system is ok and sure that the thermistor sensor is defective.
- Out of range thermistor sensor in both return air and freeze up sensor can cause the tripping “off “ the unit. The resistance of both thermistor is 8 to 10k ohms, so can test by using ohm meter


Posted on Jan 12, 2008

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

My air conditioner is not blowing cold air in the house

because the fan inside the house is working doesn't mean that the compressor outside is working
It may be a faulty start /run capacitor for the outside unit ,out of gas or failed power board
I suggest that you get an accredited technician to come and give you a proper diagnosis of the fault.

Jul 17, 2015 | Air Conditioners

1 Answer

I have a Ruud heat pump/air conditioner. The out side fan and unit works fine and cools fine but now the inside fan that blows the cool air in will not turn on. We can turn the fan with our hand so I don't...

You didn't mention if you checked for 115 volts at the power supply to the air handler. The unit outside has its own power supply. A lot of times the switch that is on the wall doesn't like to work after its been turned off and back on for service, also check the blower door safety switch. If the blower door hasn't been put back in place properly and snugly it will kill power to the whole air handler. Hope this helps. Good luck

Jul 31, 2013 | Ruud UBHC Air Conditioner

2 Answers

Fujitsu airon ASTA24LCC 2 flashes green and red then 5 red flashes any idea what it means

Had similar problem (ie. 2 green & red flashed followed by 5 red flashes - Fan blowing but not cooling ... I also noted that the outside unit fan wasn't going). Tried restarting several time after waiting only a minute or two after turning the mains power off but with no change. So turned the unit off at the mains power and then fired it up about 2hrs later and it was all working fine.

Jan 24, 2013 | Fujitsu 24C1 Air Conditioner

1 Answer

Unit stops rinning after 15 minutes ande a sign appears in the window saying c6. turn off unit at main switch and wait for 15 minutes and unit starts adain for a further 10 to 15 minutes and cuts off...

Compressor run current high. Check condenser coil dust blocked. Clean it. Check fan motor- if less rpm, replace capacitor.
Best solution:Do water Service and then check. If still amps gradually increase, replace capacitor.

Thanks and hope helpful.

Jan 28, 2011 | LG Air Conditioners

1 Answer

Is the fan on the outside unit supposed to turn when the heat is on or only for the air conditioner? Our unit is omitting a strange odor and the fan will not move even if we switch the unit to air...

The outside fan is used when ever the compresser needs to be cooled. So depending upon the outside temp as well as the temp of the refrigeration, it may not come on. When you say "our unit is ommiting a strange odor" are you refering to the outside condenser? or from the air handler? and what does it smell like? Please give us more to work with to be able to help you. Yes there are people looking and working on problems here at

Jan 22, 2011 | Ruud UAKA042 Air Conditioner

1 Answer

Air con unit saying 'C6"

According to the service manuals:

6 is:
Excessive current at inverter
DC power circuit

so the unit shouldnt run?!?

The fault is also coming up as:
indoor unit coil sensor faulty


all the best

Jul 05, 2010 | LG LSC183VMA Split System Air Conditioner

2 Answers

C6 error code on LG art cool

Try turning the power off at the fuse box, waiting 5 minutes turning the system back on and spray some water on the vents on the side of the outside condenser. If the fan isnt spining get a twig and spin it in an anti-clockwise direction after 1 or 2 spins it should start spinning on its own. continue to hose the vents with water for another 5 minutes. Its important to have the fan spinning as it extracts the heat from the condenser box.

Jan 03, 2009 | LG LSC121PMA Split System Air Conditioner

Not finding what you are looking for?
Air Conditioners Logo

768 people viewed this question

Ask a Question

Usually answered in minutes!

Top LG Air Conditioners Experts


Level 3 Expert

1033 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Tim Whalen

Level 3 Expert

3056 Answers

Are you a LG Air Conditioner Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides