Working on a pu24ek mr slim the suction is being pulled down to 5 psi yet the high side coming out at 140 psi on other side of cap tube i cleaned the screen going into evap distibuter possible restricted cap tube

That's 2 psi on the suction side of the compressor, which should be about -10 degrees. I suspect the high pressure side will be the 140 psi. If you need to add freon (134), you have a leak and it needs to be fixed.

Unit short of refrigerant or outside condenser very dirty. Clean outside thoroughly and make sure there is plenty of warmth coming from it when working.

L-2 stands for Open phase detective.Check power for all phases and rectify.

the metering device is in the outside unit on mini splits that is why the liquid line sweats. pressure reading depend on load high load high readings i would shoot for arount a 40f suction saturation temp

Make sure the outside fan is running. Also check the high side pressure, I assume the 70# is the low side pressure, so you can tell what the compressor is doing. If the fan and compressor are both working, make sure there is good airflow through outdoor coil and check that it is clean. Let me know what you find.

God day,
Some thoughts.
1. Are the evap fan motors running, and at full speed. That would give you abnormally low suction pressure.
2. Cap tube sized too small. or partial restriction in the dryer cap tube/dryer when brazing in the lines.
3. Low ambient. What's the temp the machine is running in.
4. Over sized compressor.
5. Moisture. God, 134A is touchy on that one.
6. Was original cap tube soldered to the suction line to create a heat exchanger. Needed on many apps. Definately would cause flash back on start up.
7. Superheat a little low, should be 12 to 15 degrees.

check cooling coil(in door unit)if there ice buil up then feel air vent if no air mean your fin block aready need to clean / air vent ok meant there have a leak .you need r22 test gauge and hose,reamer,tube cutter and flaring kit. 1)check suction pressure(big tube at out door unit) remove 2 way cap and 3 way cap valve then connect blue hose at service port 3 way valve (port locate at left or right depent on manufacturer) you will get pressure about 40-45 psi(air cond is running) then use a allen key(hexagonal wrench) to close 2 way valve(small tube or gas discharge side) wait 1-2 minute then close 3 way valve (suction tube or big tube) IMMEDIATELY SHUT OFF AIRCOND AND PLUG OUT POWER CORD (you need 2 person one at in door unit and the other at out door unit). this method is to keep remaining gas inside the compresser.Then leak check ,open 2 way valve about 90 degree hold it for 10 minute then close it .MEASURE THE PRESSURE keeep it for 5-10 minute. If the pressure indicate not same during the first time measured it meant there have a leakage, for air cond 1- 5 year the leakage will happen at the copper tubing connection and improper flaring .Then U need to clean in door and out door unit ,used a spanner or wrench to losen the copper FLARE NUT at out door unit and in door unit( inside insulation) then use pvc tape to cover all copper pipe/tube hole to prevent dirt go inside tube/pipe. Then lift up out door unit and used coil cleanner ditergent wait 5 minute then flush with water. Remove indoor front panel then disconnect out door unit cable at front panel in door unit then lift up indoor unit to disangage the hook and pull out the indoor unit, then clean the cooling coil ,cover electrical part with plastic .last step u need to cut (used cooper cutter)the copper pipe/tube FLARE NUT connection low side(big tube) and high side(small tube) in door connection and out door connection .Then u need to remove the burr from cut edge using reamer make sure metal powder not goes in Then make a flare after inserting FLARE NUT onto the copper pipes Then U can install back the unit check the low side pressure if the pressure 55-67 psi no need to charge

The foreign made market is different than the USA.

First if the unit doesn't get a change or input from a manual command (on the remote on mine) it will shut off because it assumes there is no one there.

2nd if it is in the timer mode it may be different in orientation than what you are used to looking at.

TO make sure these are not your problem review the instructions.

If this is R22 or R410A there is not a pressure switch that will cut it "OFF" at 140#. And if your fluctuating tween 30 and 140 It is almost sure its low on charge especially if its new. Now I assume you mean 140 on the high side, right?

The cap tube is clogged and the unit is overcharged. Get used to this on beverage air units.