All of a sudden a red light began flashing below the power button. The unit seems to be working fine but what does that mean?
This is not a split system a/c unit guys. Look at the picture. The blinking light means the air filter may need cleaning. Reset power to turn it off.
SOURCE: lg split system air conditioner
Try sutting off the power to both units. This may reset the unit. Check out the service manual at LG website www.lgusa.com. Go to their support page and put the model number in. Remove and replace the batteries in the remote. If there is a communication error, the inside unit will display 3 flashes. If all else fails, call LG at 1-800-243-0000. Good Luck!
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SOURCE: LG split system air conditionsr
3 flases indicates a communication error. Have a technician check wiring and connections.
SOURCE: LG LWHD8000RY6 Air Conditioner Not Cooling Room
Remove the front cover of the unit to expose the cooling coil. Put the unit on and observe if there will be formation of frost (ice) on the coil. If there's frost formation, the common cause is dirty cooling coil. Have it cleaned using an alkali base coil cleaner. If the coil is clean, then the problem is the fan motor. It might be turning slow due to copper loss. Have it replaced.
SOURCE: LG air conditioner model LG LP1210BXR
Well it needs to be fix by a professional, so if you or someone you know are good at tinkering go for it. It as a sensor problem at the evaporator.
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