Cool air when running; warm air when compressor is off.

sounds like issues with vent line

put a xtra fan on you to blow the cooler air around. this might help. but i think you will find it is to small to cool what your trying to cool. good luck and good day
saw

I would drain the water out of the machine via the plug on the back once the unit is drained turn on, wait a few minutes. If compressor does not come on or comes on and does not cool, you need service beyond diy.

This is an old question, but I am having the same problem with APE07AHM1 that I bought second hand. I'd like to recharge it.

The answer by binev_78 seems to be for outdoor AC compressor units but this is a portable stand alone unit, no outdoor unit.

If the out door fan keeps running and the compressor cycles off that would be the overload in the compressor.
What keeps the windings cool is the refrigerant back to the compressor.
For the overload to cycle it would have to be either not enough cooling back to the compressor or high amp draw, which could be the metering device (txv or orifice) or low on charge, or other things would be a bad capacitor, sometimes a bad start relay not staying open, when compressor gets up to speed or anything causing the compressor to draw high amps.
To check the refrigerant, he needs to check the superheat at the compressor it should be appoximately 12° to15°, and next time the compressor goes off if you shut the power off and feel the top of the compressor and if it's hot 130° or higher it's probably refrigerant.

If its blowing air, but not cold, the compressor isn't engaging. There are many different possibilities on this.
Bad compressor, unit out of gas, bad run capacitor, etc, all could cause this, even a bad control panel.

Hope its something simple.

Greg.

every single component in your cooling unit is needed for it to work, so anything can shut it down. If you could provide more information as to what type of unit you have: is it a central heat and air package unit? or central split system (furnace indoors and condenser outside)? or a wall a/c? Does any part of the system/unit do anything?

If you set you r AC to FAN mode the unit will not cool, it only runs in the indoor but the outdoor will off. If you set to AUTO the unit will cool but the indoor blower will automatically run slower when the room is cool or attain the room temp. setting. If you set it to COOL the fan speed is fix depending on your setting and it also operate in cool.

when you removed the back panel inside refrig was there any sign of cooling, perhaps only top 1 pass of the coil was frosted, or completly warm no signd of frost at all?

Some units do cool/dehumidify only im afraid why cant you let the unit dump its hot air into the room then it wont heat or cool the room?