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Neo plasma error code ch 21 - LG Art Cool LA121HNP Split System Air Conditioner

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I have a neo plasma lg 7kw will not heat LG Air conditioner


Make sure the setting on the remote is correct . Sun symbol for heating. Make sure the filters are clean. On heating, the indoor unit will 1/2 open the flap but the fan shouldn't start. The outdoor unit should start and if working properly, will be blowing cold air. The indoor unit will open the flap fully and the indoor fan will start once it gets hot then you should feel warm air. If the outdoor unit is blowing warmish air, I would say the reversing valve coil has failed or one of the indoor temp or pipe sensors are faulty. If a sensor fails, a "CH" error should appear on the display.

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LG neo plasma error code


It means the lid is open OR it has a short circuit.

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I have an LG neo plasma airconditioner and suddenly it turns off after about two minutes and it comes up with a code C5. Can anyone help please


Comms Error: check your wiring, remove external pumps. Split/Multi - check volts from terminal N to 3 = 0 - 65 Vdc, Multi V - 4 Vdc terminals 3 and 4.

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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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Error ch 5


check all wiring and connections - ch 5 is a communication error between the indoor unit and the outdoor unit......

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1 Answer

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i have the same, only way to get goin is turn off at mains. ive now tried running on fan low .... got this tip from another problem and seems to work.
good luck

Nov 04, 2007 | Computers & Internet

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