What does p9 mean on air conditioner it’s an akai split system

SOURCE: Split System Air conditioner

There normally two types of leakages from the wall unit.
1.The warm air in the room when comes in contact with the cooling coil of heat exchanger (consisting of fine fins where compressed refrigerant evaporates) looses its heat & cannot retain the same moisture content at lower temperature at the point of contact with evaporator. There is a provision of a drain pipe to carry this condensed water to outside water drain. So if the drain pipe is choked or the coupling joint of the drain pipe at the bottom of cooling coil is not proper, there will be water leakage, This can be easily attended by physically looking at the fittings.
2.The second problem can be the leakage of the refrigerant. If there is second type of problem, then there will be very little or no cooling irrespective of continuous running of air conditioner. This can be easily checked by feeling the temperature of outlet air from the air conditioner.

Conclusion-As you have written that there is leakage from the air conditioner, but you have not written whether it is visible or invisible. If the leakage is visible, it is problem number 1 & if it is invisible, it is problem number 2.

If you are not satisfied you are free to ask for more explanations.

SOURCE: Remove and relocate split air conditioner

The simplest way of explaining this is as per the following. On your outdoor compressor unit there should be two pipes, one smaller diameter [high pressure] and a larger diameter pipe [low pressure]. Turn your A/C on inside the house and then shut off the smaller diameter pipe. Run the unit for a around 3 to 4 minutes and then check if the cooling is reducing from the unit inside the house. When you feel room temperature air [not cool] being emitted from the indoor unit shut off the larger diameter pipe and turn off unit. Isolate electrics, disconnect A/C piping and immediately seal the piping with good quality tape to prevent egress of dirt. When re-installing a quick purge of gas is usually only required to clear the lines if they were sealed properly and kept clean. Ideally running a vacuum pump is recommended but if care was taken then it may not be needed, as in many of my installations.

SOURCE: Art Cool LA181CNW Split System Air Conditioner: hi, i am using an lg split airconditioner. the sp...

Sound like a defective receiver board. Have this checked. Also check to see that your remote transmits. Hold the top part of the remote to your phone or digital camera lens. press a button and a light should appear on the screen of your phone or digital camera screen.
Hope this helps I take the time to answer your question so please rate me

SOURCE: I have a TCL split system air conditioner with error code E2

I have the same problem with my TCL unit. I have had the Tech out to day and I am told it is an internal senor in the unit that fails. I am informed by the tech that this is a very common fault with the TCL unit. Also if you live in Australia like me prepare yourself for a fight with TCL due to them not liking to honour the 5 year warranty. I would not recommend this product to anyone

SOURCE: replacement parts Amcor AmcorAire UCHW-H12AF2

Amcoraire USA went bankrupt in 2010. Bought out by Pridiom group. Service Dept 1-201-266-8234 or 1-201-562-9777