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Midea Air Conditioner E4 Error Code
Portable AC display panel communication fault on Midea air conditioners.
MideaAll Midea air conditioner codes
The control panel on the portable lost its data link with the main board. A loose connection or a failed display board are the likely causes.
Compatible models
Portable units from Midea's US range. The support page gives the code but no model list.
Also shown as
On older Midea mini-splits E4 is a room sensor fault (now EH 60), which is a different problem.
Difficulty
Try the basic checks, but the usual fix is a technician's job.
Not sure you are reading the code right? See how to read Midea air conditioner codes.
How to fix Midea E4
Restart the unit
Unplug it for several minutes, plug it back in, and try the buttons again.
Try the remote
If the unit responds to the remote but not to the panel, mention it when you call service.
When to call a technician
If E4 doesn't clear after a restart, contact Midea service. The fix involves opening the cabinet.
Parts linked to E4
These are the parts most often behind this code. Tap one to see what it does and the signs it is failing.
Order parts by your full model number so they fit.
Frequently asked questions
Which Midea models show the E4 code?
Portable units from Midea's US range. The support page gives the code but no model list.
Can I fix Midea E4 myself?
Only the basic checks. You can safely try the steps above, but E4 usually points to a part or fault that needs a technician.
Other Midea air conditioner codes
- EL 01Indoor and outdoor units have lost contact
- EH 00Indoor board memory (EEPROM) fault
- EH 03Indoor fan speed out of range
- EH 60Room temperature sensor fault
- EH 61Indoor coil sensor fault
- EH 0bIndoor main board and display aren't talking
- EL 0CPossible refrigerant leak detected
- EC 07Outdoor fan speed out of control
- EC 53Outdoor air temperature sensor fault
- EC 52Outdoor coil sensor fault
- EC 54Compressor discharge sensor fault
- PC 00Inverter power module (IPM) protection
- PC 01Supply voltage too high or too low
- PC 02Compressor or power module overheating
- PC 04Inverter compressor drive error
- PC 08Over-current protection
- PC 0LToo cold outside to run
- P1Portable AC water tank is full
- E1Portable AC room temperature sensor fault
- E2Portable AC evaporator sensor fault
- ASWindow AC room temperature sensor fault
Last reviewed 2026-10-19. Codes and steps can vary by model; check your owner's manual.