We have a split system LG air con. Our local people cannot help us. The problem we have is that the unit seems to give off an offensive, unhealthy musky smell when not in use & also the temp when set at a certain degrees (eg. 23) within a few hours of use the temp drops to 19 deg or lower without lowering the controls.

Lift the front cover of the air con, on the right hand side there is a button or a hole which has a button inside which you can press which is for manual starting of the air con. If this works, then you will know the remote is faulty, if it still doesn't work, check that the isolator switch for the air con hasn't been turned off. There will be 9Or should be) a switch outside next to the air con outdoor unit to switch power on / off to the air con. If not, there should be switch inside the meter box at the front of the house. Make sure they are switched on.

Hi Emanuel,
Your out door unit could be very dirty or the outdoor unit temperature sensor is out of position.

Larger split system air con gets power from the external unit while smaller air con gets power from the internal unit. Can you find any power switch or power socket/plug around the external or internal units?

From my experience mini splits are a very quiet unit. You may need to check local code though, and consult your neighbor first. Better to be proactive over making an enemy.

Was it pretty cold outside the last few times you ran it?

Im trying to find out roughly how old my air con unit is, can anyone help?? It's an LG S12AW 3.5kw High Wall Split Air Conditioning System
Thanks

According to the service manuals:

6 is:
Excessive current at inverter
DC power circuit

so the unit shouldnt run?!?

The fault is also coming up as:
indoor unit coil sensor faulty

source:
http://www.mylg.co.uk/data%20for%20site/LG%20Fault%20Codes%20for%20SMS%20%2807%20Sept%29.pdf

all the best

i am air con tech and i face all ready this problem may be it will help u . e5 error is ur air con not have gas becoze of that the low presser switch give error on disply thanks best regard for all. pls let now if its help full

Make sure the unit is tilted downward at the back. About 1" lower than the front is good. Even with a drain, the water will pool inside if it doesn't have a slope for drainage.

The compressor valve weak