Question about LG Heating & Cooling

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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 to 5 second and after that indoor unit stops cooling and just fan runs. No cooling is done after that and room temperature keep increasing. The green LED of compressor in indoor unit is ON, compressor does not work. To achieve cooling again I have to switch off whole unit for like half an hour and then switch it on, it works fine. But next day same problem. I am not able to figure out where is the problem.

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  • Vijay Jadav Apr 09, 2011

    Thanks for the reply. I think the first reason you gave seems right to me. I might have a proper voltage supply problem. Previously it used to occur once in a day but now it happens, everytime I switch ON AC. After every 5 to 6 minutes, it makes some noise and compressor goes OFF.

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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.

Posted on Apr 08, 2011

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