LG split inverter model LSL122V3 and it doesn't cool and shuts down after a few minutes with the green led flashing five times repeating.

Question edited for clarity and spelling 'Gallery' and toss in some CAPS.
Question moved from LG Office Equipment Category.

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Try disconnecting the power at the breaker for at least 2 hours and preferably overnight. This fully resets the units and it will do a Self Test when you switch it back on. Wait 15 minutes before operating it. 5 Blinks is a loss of communication.

Fault Codes for all LG wall mounted and Artcool split system

airfusion.co.uk https://www.airfusion.co.uk > fault-codes-all-lg-wall-...
Fault code C5, CH5 or 5 flashes This fault code indicates a communication error between the indoor and outdoor units. If there is a communication error fault ...

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[LG Air-Conditioner Error Codes] Checking code CH53

LG Electronics https://www.lg.com > Home > Support Home

Jun 9, 2023 - The second LED indicates error at 10's digit. Ex) After the second LED blinks 3 times with certain interval, if the first LED blinks 5 times .

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Hi Jimbo, generally this issue is from defective LED lamps, the inverter is shutting down because of over current because of shorted LED's. All the main board knows (the board that issues the error codes) is the inverter shut down, it has no way of knowing why.

possibly the filter...

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

Hi Marie, does the green indicator light on the front panel flash after it shuts down? If it does...count how many times it flashes this will refer to a fault code diagnostic.

Keith.

The outside and inside coils may need cleaning. Clogged coils cause excess pressures and heat of the freon that can cause safety switches to shut er down. Eveen a faulty power relay in the outside unit.Otherwise you may need a serviceman to locate the cause.

Might be dirty coil so unit is shutting off on high head pressure. Clean coil

I would first check the condensate drain pipe. This can be done by blowing back into the drainpipe from outside. Not to worry it is not dirty or dangerous. Also make sure that your air filters are clean.

The operating LED will be blinking 5 times, means that there is a
comunication error (serial comunication) between the outdoor and the indoor unit.

It may very well be a connection issue with one of the wire connections as its not giving you a error code. I would double check the wire plug connections

I have had this same problem twice in the past 3 months. So far both times I've been able to get it back after a week or two. I'm not sure what works, but unplugging and detaching the antenna and cable and waiting a few days seems to be the key. In both instances, I unplugged it for a few days then plugged it in for a few days and repeated the processes until I eventually got the steady red led. Both times prior to the red led the led would flash red then green and make a clickiing noise for several hours before I was able to get it working again.