Some ac units portable or other wise use a program where it starts on full cool and as the humidity is removed from the room the program changes to less cool or switches off for periods ( called comfort mode on some units and is used for sleeping where the room temp is maintained and does't get colder as the night goes on)
try and down load a operators manual from the net
SOURCE: Comfort Aire PAC-121 problem
E4 shows up on the screen on my PAC-121 when the water reservoir on the right-hand-side is not pushed in all the way. If it is in all the way the switch that it engages may be bad or out of place.
SOURCE: Carrier Comfort Zone 2 flashing E2
the e2 error on your thermostat is a problem with the return temp sensor on your system, the only thing you can really do is call a company and replace it, you can't bypass it or remove it cause the system wont run properly
SOURCE: Goodman AC fan working but not cool air.
0204 built the second week of 2004 sound like you have a loose or burnt wire in the a-c and arcing when the unit comes on. turn the breaker off next time you fix an outlet
SOURCE: Cool air from Carrier unit barely blows out vents,unit stays on
undersized is just that...you and I got taken to the cleaners.but i did put an adjustable vent in the cod air return vent duct next to the floor...it helped mine but i say some installers should.....well you know
SOURCE: Searching for manual for my simplicity portable air conditioner
Yes can you please provide the make and model # so We may help more.
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