I have a Fujiaire split unit( wall type). The problem i have now is when i run the unit, it show a thick icing on the discharge side till to the indoor unit and also the air coming out from the unot os not cool. Can you please tell me what should i do or what it cause this problem please.

try switch the unit off till ice melts and try running the unit again after. if the ice is till coming back check the filters are clean and outside coil clean. sounds like a restriction in piping,possibly a blockage.
c1 err caused by the indoor pipe sensor being out of spec, possibly due to the ice buildup.

Low on freon, dirty evap, dirty filter or maybe restricted at the metering device

On e right side of wall unit near refrigeration pipes

Code for fujiaire 090

Icing is caused by one of two things.
1. The air coming in is too much and has a lot of water vapor in it.
2. The evaporator is too cold. This could be because of a low refrigerant charge

Sounds like the water valve For the ice maker fill is leaking. these are solenoid type usually found at the back bottom outside of unit. turn water to this valve off at connection in wall . You can have that valve replaced

I have a Fujiaire split unit(wall type). I have this problem quite frequently, an error code E04 display, Try to look at the operating manual, it does not specify the problem, I check the compressor motor winding, the amount of F22 charge and clean the outdoor and indoor unit. Wonder why put an Error code when there is nothing on the troubleshooting list. But whenever the authorize repair man come for servicing, he could not tell me. Does anyone has a solution?????

First check your circuit breaker or fuse that supplies power to the outside unit. It's probably separate from the inside unit. Then try to turn unit on. If the fan and compressor just make a humming sound then turn it off and check the capacitor if you have a multimeter. You can also look at it and see if the top looks expanded. That's a good sign its bad, but not all bad one's look expanded. Tomorrow I will have access to an LG service manual and can let you know what the code means. Sorry I can't get it sooner. Let me know what you find.

If is heating on outside temp must bee max 5 degree
Celsius.If leak inside unit then check drain hose.

the fact the bowl was filled with water and that you said the inside of the freezer was coated with ice, indicates a failure of the defrost system.
now the ice has gone, reset the temps and wait to see what happens