Error and fault codes help a technician diagnose issues with the portable air conditioner. If the  unit is displaying an error, check the chart below for possible error code resolutions:

 

 

Fault Code Description/Reason   Solutions
E0 Indicates incoming power issues, such as a low voltage condition or excessive power consumption.

Unplug the unit for 10 minutes. Service may be required
E1 Indicates a stuck button on the front panel key pad.

Unplug unit and press each button firmly to reset the switches. Then, plug the unit back into the power supply. Service may be required
 E4  Unit has a tank built-in that must be emptied periodically. E4 indicates the tank float is stuck. Open the water tank and verify no debris is blocking the operation of the float.
STOP Unit has a tank built-in that must be emptied periodically. STOP indicates the tank must be emptied or tank float is stuck. Unit will not run while STOP appears. Empty the tank. Open the water reservoir and verify no debris is blocking the operation of the float.
High Temp Appears when ambient room temperature is over 99 degrees F. If the ambient temperature is not above 99F, then service may be required.

 

 

If you continue to have problems, please contact Haier Appliances at 1-877-337-3639 or visit https://www.haierappliances.com/support/schedule-service. Most portable air conditioners do not have repair parts available and may not be serviceable. If in-warranty, check your Owner's Manual for warranty information.