WALL MOUNT AC DOES NOT COOL ALL THE TIME , I FIND THE AIR COMING OUT OF THE UNIT IS NOT AS COOL AS IT ONCE WAS .THERES NO FROST ON THE WALL UNIT AND I DONT SEE ANY WATER LEAKS.

Where you see frost all the time, wait for unit to thaw and start cooling again and carefully slide hand up in that hole and see if you can feel cool air leaking in from divider that separates cool and return air, that will cause freeze-ups as well. Use foil tape if necessary to stop any cool air coming in to return air from around divider. Also, if you have any diffusers closed, (on ducted system in ceiling) or partially closed, open them all up full flow. If you restrict the cold air from coming out too much, it can also cause freeze up. One more thing, take cover off where cool air box is and double check that something isn't restricting the flow of cold in to the duct work if it has ducted system.

Dear it is a thermostat system. You can simply check it by setting temp at 30 then check either warm air is coming or cool air. at this time warm air should come. If warm air is not coming means there is a fault is realy in your pcb. It can be simply remove no need to worry.

The frost on the pipe indicates you have a dirty filter, dirty evaporator coil, Blower not running at the proper speed (to slow) or you are low on refrigerant.

good morning,
with this unit there are two issues that could be cusing this...
check to make sure you can hear the fan in the freezer,
2nd check your back wall for frost, sometimes this model ices up in the air chanels, to know for sure you will have to remove both the walls and the back wall, it takes a lil time but it can be done with only a screwdriver,
once you get the back wall off look up in the corners, of the freezer, it there is frost or ice blocks , remove those and reassemble you should be ok
make sure the drawer is closing properly

it sounds like your bottom mount refrig. has a defrost problem. check for heavy frost on the frzr's rear wall. also make sure your frzr fan motor is running.if your fan is running,then check for air flow coming out the air vent in the freshfood compartment. i need a model# to see how your defrost system is controlled.

Is this a wall mount thermostat or manual control unit? What is the model of the air conditioner? The only way that this is going to happen is that power is jumping somewhere to the heater coil from the cool side.

If it is a wall mount thermostat, the yellow wire is the cool mode (compressor on) and both the tan and blue wires are the fan mode. The orange wire is for the heat strip. So if you set the thermostat on High/Cool, then you should have power at the yellow and blue wires, not the orange. If the orange wire is energized, then there is a problem.

Remove the orange wire from the thermostat, try it again. If the breaker trips, then remove the wire from the connection at the relay board. Once again, try the unit. If the breaker trips due to the same problem, then it has to be a bad relay board. If the breaker does not trip this time, then you have problem with your wiring between your thermostat and the control unit.

Sounds like you don't have manual controls since it has a relay board.

Hope this helps,

Jeff

If you don’t see any frost on the suction line or big line on the furnace
(that goes from the furnace to the outdoor unit) and the filter and coil are clean then you are probably low on refrigerant.

If the Ac unit can not fit your window, you can put a wall unit, you don’t have to open the wall and mount a stable unit, you just need to buy a portable AC unit put on.

This way cost you not too much.

The differance between a window and wall mounted A/C is the mounting system.
Window units are usually smaller BTU systems they set in the window, so you do not have to cut a hole in the wall to install it.
For a bedroom say 10 x 10 you can use @ 5000 btu it plugs into a standard 120 volt electric outlet. If the room is bigger then go bigger say @ 6000 btu or so. Take your room dementions with you when shopping for a unit. sometimes they have sizing on the side of the unit box.
Wall units are usually larger units. Like whole house 18,000 btu
they slide in and out of the case and use a 240 volt seperate circuit.
Best place to shop for A/C's are Home Depot, Lowes, Sams Club, B.J.'s, and Cosco they buy in large volumeusually give a Good deal I've seen 5000 btu units as low as $89.00
Just don't drop the unit out the window when installing it
From the second floor it will void your warranty. LOL
Good Luck Phil