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Sir, LG package unit , error code CH21 its was start but after 5 minutes turn of its self,??kindly help me,?

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Sorry but must replace the pcboard of outdoor unit and maybe the compressor too. It isn’t worth to fix it.

Posted on Nov 11, 2017

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Posted on Jan 02, 2017

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hvac1960

R Subramaniyam Iyer

  • 2133 Answers

SOURCE: Our LG Art cool Airconditioner

Inverter compressor run current high. Check compressor windings all equal 1 to 4 OhmsCheck to earth 50 MOhm minimum, check run current. If high, winding is weak. Solution: Replace compressor.

Posted on Jan 20, 2011

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ERROR CODE ON AIRCONDITIONER LG ART COOL INVERTER MODEL NUMBER LSZ244VM4


Hi,

The first thing i'll say is you will need to get it repaired by a technician and i strongly recommend you not to do it by urself.

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.
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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.

3683b64.jpg


Goodluck..

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1 Answer

Don't understand outdoor self diagnosis code


This sounds like a fault with the inverter or the compressor motor itself,

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1 Answer

A/C runs fine for 7-8 minutes, then shuts off.


AHX18MEV
4 - 12
[8] SELF-DIAGNOSIS FUNCTION
1. Indoor unit
(AH-X18MEV, AH-X18MEV-1, AH-X24MEV, AH-X24MEV-1)
To display the self-diagnosis, hold down the AUX button for over 5 seconds on the indoor unit when the indoor unit is not operating.
• The operation lamp (red), timer lamp (orange) and Super jet lamp lighter) flash to indicate the information of malfunction.
(Display of self-diagnosis result)
The operation lamp (red) and the Super jet lamp (green) flash in synchronization with the timer lamp (orange).
(AH-XP18MV, AH-XP18MV-1, AH-XP24MV, AH-XP24MV-1)
To display the self-diagnosis, hold down the AUX button for over 5 seconds on the indoor unit when the indoor unit is not operating.
• The POWER CONSUMPTION indicator indicates the information of malfunction by showing the main category error (number) and the sub-category
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Example: Compressor high-temperature error
Remark

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Error code 67


Error code 67 is an airflow problem. Either clogged filter or bad blower motor. Unplug unit remove bucket and feel for filter in front behind cover it drops down. Clean filter with water and reinsert. Plug unit in turn to "on", fan should begin to run, after 3-5 minutes compressor should start. If fan does not start it is bad and should be replaced.

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1 Answer

Our LG Art cool Airconditioner displays the error code CH 21. The unit turns on BUT after about 5 minutes the unit turns its self off. Please Help


Inverter compressor run current high. Check compressor windings all equal 1 to 4 OhmsCheck to earth 50 MOhm minimum, check run current. If high, winding is weak. Solution: Replace compressor.

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This error is a communication error between your indoor and outdoor unit. You can try turning the breaker off for a few minutes and restart the unit. However if that does not work its best suggested to have an authorized HVAC technician service the unit.

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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.

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1 Answer

Error message


Hi

This is not an error code!
RF CH21 simply refers to a channel that the recorder is set to and is the first channel it will display. For example, there is no CH20. Your recorder is trying to find stations on all its channels from CH21 through to around CH70 and when it gets to the end if it doesn't find any stations, it starts the process again. This will often happen when you first unpack the unit from new until it has been set up.

Firstly, make sure you have a TV antenna connected, even if you use a satelite receiver. If no antenna is connected, your poor old set will keep on searching until you tell it to stop. Incidentally, connecting an antenna will allow the machine to set the clock automatically too. Next, go into the menu options, this is incredibly easy, just follow the on screen prompt.

Find "Tuning Set Up" and make sure that it is not set to auto. If the recorder still continues to show CH21, you will need to switch the unit off from the power socket and leave it for at least 15 minutes before switching back on. Then repeat the above.

I am almost certain you'll fix this, because it sounds as though the machine is doing what it is supposed to. If it still doesn't work please give me a few more details.
Best wishes.....

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Lg ductless no ac


I may not be of much help but I may be able to guide you into some diagnosos. If there is a communication problem between the inside and outside unit, both on the inside and outside units a colored LED will bling 5 times then pause for 3 seconds. The 33 and 44 codes are confusing to me because I have never seen this. Try resetting the outside unit with no call for heat or cool from the inside unit. After about 20 seconds, restore power to the outside unit. Go in and turn on the remote and make sure you lower the cool setting more than degrees cooler than the room temp. After 3 minutes the outside unit should turn on. If you get an error code of either 1, 2 or 5 blinks document it for the technician. If you continue to get your 33 and 44, you have a bad control board. If all else fails, press and hold the button located on the lower left side of the art unit and hold for about 5 seconds. If it still no longer works, now you will need the help of someone who knows these units.

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