Haeir btu 14500 unit, shuts downs on its own after 1 minute

SOURCE: "Cool" mode shuts off

An E1 error is automatically generated after the AC runs for so many hours to remind you to clean the filter. The owners manual says to clean the filter and unplug the unit, then plug unit back in and code will be reset. However, a User review stated that his code was not reset until he followed a fairly simple routine. "Unplug the unit. Hold down the power button and plug back in. Wait to hear a "beep" and then unplug it again. Plug unit in again and it should restart without E1 code."

SOURCE: Unit shuts down

Hi,
The E4 error in display its mean the wire sensor connector to thermostat is loose pls fix , or have a problem in PCB Board on thermostat, pls go to the nearest repairman to repair that.

Thank you,have a nice day


Edgz

SOURCE: Brand new right out of box Everstar MPK-10CR-1 portable 10,000 BTU's

It sounds to me like it is overheating. Make sure that all of the literature that came with the unit is accounted for. Many times the manual or instructions are blocking the exhaust causing it to overheat. If this is not the problem then I would suggest exchanging it for a new one. It may be a manufacturer defect.

SOURCE: 3 year old Beckett AFG

Called Beckett at 1-800-OIL-BURN and explained the problem. They told me that the solenoid on the oil pump (Clean Cut) was the cause. I purchased a new pump for $50 at the local plumbing supply and installed it. Problem solved.

SOURCE: LG 1200 btu ac unit works fine for 20 minutes then

You do not say if it is outdoor or indoor fan which operates. However I presume all your filters are clean and the drainpipes are clear. The only other thing you could suspect is the thermostat or air flow sensor.