Midea Group is a Chinese electrical appliance manufacturer. With headquarters in Beijao town, Shunde District – the company offers its services on a national and international level. Covering a wide range of products they take on everything from lighting, and floor care, to kitchen appliances, commercial cooking appliances, refrigerators, and air conditioners. Additionally, the company is the world’s largest appliance and robot producer.
Starting from a small workshop the company has made strides over the years. Creating one of the most successful private companies in China. They started manufacturing air conditioners in 1985, and that is still the most vital component of their business. With a range of choices, you can easily find a residential or commercial air conditioner that gets the job done efficiently and effectively. However, even with decades under the belt, there are times one cannot expect a bulletproof system.
Midea ac error codes are easy to understand and can help you deal with the issue without having to call for professional help. As most of these are easy fixes, that you can take on your own without having to spend an extra dime. The best way to deal with the situation is to note down the error code and match it using the list below. Once you have the error code you can easily work your way to the fix. To help you out we have listed down some of the most common error codes for Midea AC.
The tables below contain lists of error codes for several models of the Midea Air Conditioners.
R Series Codes
| Error Codes | Meaning |
|---|---|
| E0 | EEPROM parameter error |
| E1 | Indoor /outdoor units communication protection |
| E2 | Zero-crossing signal error |
| E3 | Fan speed out of control |
| E5 | Open or short circuit of outdoor temperature sensor |
| E6 | Open or short circuit of room or evaporator temperature sensor |
| E7 | Outdoor fan speed out of control |
| P0 | IGBT over-strong current protection |
| P1 | Over voltage or too under voltage protection |
| P2 | Temperature protection of compressor top. |
| P4 | Inverter compressor drive error |
| P5 | Inverter module protection |
| EL OC | Pressure fault, check dirty filter, blocked fan, indoor unit not working, refrigerant leak. |
Outdoor Unit Codes
| Error Code | Malfunction |
|---|---|
| E0 | EEPROM error |
| E1 | No A Indoor unit coil outlet temp. sensor or connector of sensor is defective |
| E2 | No B Indoor unit coil outlet temp. sensor or connector of sensor is defective |
| E3 | No C Indoor unit coil outlet temp. sensor or connector of sensor is defective |
| E4 | Outdoor unit temp. sensor or connector of temp. sensor is defective |
| E5 | Compressor voltage protection |
| E6 | No D Indoor unit coil outlet temp. sensor or connector of sensor is defective |
| E7 | Communication malfunction between outdoor main chip and compressor control chip |
| P0 | Temperature protection of compressor discharge or compressor top. For M4OC-36HRDN1-Q,it only means compressor discharge temp. protection. |
| P1 | High pressure protection(only for M4OC1-27HRDN1-Q, M4OC-36HRDN1-Q) |
| P2 | Low pressure protection(only for M4OC1-27HRDN1-Q, M4OC-36HRDN1-Q) |
| P3 | Compressor current protection |
| P4 | Inverter module protection |
| P6 | Condenser high-temperature protection |
Wall Type AC Codes
| Fault Code | Meaning |
|---|---|
| PO | IGBT over-strong current |
| P1 (Led 6 Green: Bright - Led 5 Red: Bright) | Over voltage or too low voltage protection |
| P1 (Led 6 Green: Bright - Led 5 Red: Blink) | MCE malfunction |
| P4 (Led 6 Green: Extinguished - Led 5 Red: Blink) | MCE start malfunction |
| P4 (Led 6 Green: Blink - Led 5 Red: Bright) | MCE phase lack protection, MCE zero speed protection, PWM in-phase malfunction |
| PO (Led 6 Green: Blink - Led 5 Red: Extinguished) | IGBT over-strong current |
| P4 (Led 6 Green: Blink - Led 5 Red: Blink) | Communication malfunction |
Outdoor Units Codes
| Error Code | Malfunction |
|---|---|
| E0 | EEPROM error |
| E1 | No A Indoor unit coil outlet temp. sensor or connector of sensor is defective |
| E2 | Communication malfunction between outdoor unit and indoor units |
| E3 | Communication malfunction between outdoor main chip and compressor control chip |
| E4 | Outdoor unit temp. sensor or connector of temp. sensor is defective |
| E5 | Compressor voltage protection |
| E6 | PFC module protection |
| P0 | Compressor top. temperature protection |
| P1 | High pressure protection |
| P2 | Low pressure protection |
| P3 | Compressor current protection |
| P4 | Compressor discharge high-temperature protection |
| P5 | Condenser high-temperature protection |
| P6 | Inverter module protection |
| F1 | No A Indoor unit coil outlet temp. sensor or connector of sensor is defective |
| F2 | No B Indoor unit coil outlet temp. sensor or connector of sensor is defective |
| F3 | No C Indoor unit coil outlet temp. sensor or connector of sensor is defective |
| F4 | No D Indoor unit coil outlet temp. sensor or connector of sensor is defective |
| F5 | No E Indoor unit coil outlet temp. sensor or connector of sensor is defective |
Midea AC Codes List And Definitions
| Error Codes | Solution |
|---|---|
| E01 | The temp. sensor is off, or short-circuit. |
| E02 | Compressor is over current /Turn off the unit, wait for a moment and then restart. If many times of this operation do not work, please contact service people. |
| E04 | Outdoor unit protection /Turn off the unit, wait for a moment and then restart. If many times of this operation do not work, please contact service people. |
| P02 | Compressor is over load /Turn off the unit, wait for a moment and then restart. If many times of this operation do not work, please contact service people. |
| P03 | The temperature of evaporator coil of indoor unit is too low (when cooling) /Turn off the unit, remove the obstacles in the air-inlet and clean the air filter, then restart the unit. If many times of this operation do not work, please contact service people. |
| P04 | The temperature of evaporator coil of indoor unit is too high (when heating) /Turn off the unit, remove the obstacles in the air-inlet and clean the air filter, then restart the unit. If many times of this operation do not work, please contact service people. |
| P05 | The temperature of air outlet of indoor unit is too high (when heating) /Turn off the unit, remove the obstacles in the air-inlet and clean the air filter, then restart the unit. If many times of this operation do not work, please contact service people. |
If the above procedures still do not work, please contact our local dealers or after sales service people, inform them your air conditioner model and trouble details, they will help you solve the problem. Please do not repair the air conditioner by yourself.
Portable AC Codes
| Error Codes | Cause |
|---|---|
| E1 | Room temperature sensor error- Unplug the unit and plug it back in. If error repeats, call for service |
| E2 | Evaporator temperature sensor error- Unplug the unit and plug it back in. If error repeats, call for service. |
| E4 | Display panel communication error- Unplug the unit and plug it back in. If error repeats, call for service. |
| E5 | The auto sliding panel malfunction- Unplug the unit and plug it back in. If error repeats, call for service. |
| E0 | Unit malfunction- Unplug the unit and plug it back in. If error repeats, call for service. |
Remote Control Buttons Meaning
Troubleshooting
When troubles occur, please check the following points before contacting a repair company.
Problem: Poor Cooling Performance
Possible Causes:
- Temperature setting may be higher than ambient room temperature
- The heat exchanger on the indoor or outdoor unit is dirty
- The air filter is dirty
- The air inlet or outlet of either unit is blocked
- Doors and windows are open
- Excessive heat is generated by sunlight
- Too many sources of heat in the room (people, computers, electronics, etc.)
- Low refrigerant due to leak or long-term use
- SILENCE function is activated
Solution:
- Lower the temperature setting
- Clean the affected heat exchanger
- Remove the filter and clean it according to instructions
- Turn the unit off, remove the obstruction and turn it back on
- Make sure that all doors and windows are closed while operating the unit
- Close windows and curtains during periods of high heat or bright sunshine
- Reduce amount of heat sources
- Check for leaks, re-seal if necessary and top off refrigerant
- SILENCE function can lower product performance by reducing operating frequency. Turn off SILENCE function.
Problem: The unit is not working
Possible Causes:
- Power failure
- The power is turned off
- The fuse is burned out
- Remote control batteries are dead
- The Unit’s 3-minute protection has been activated
- Timer is activated
Solution:
- Wait for the power to be restored
- Turn on the power
- Replace the fuse
- Replace batteries
- Wait three minutes after restarting the unit
- Turn timer off
Problem: The unit starts and stops frequently
Possible Causes:
- There’s too much or too little refrigerant in the system
- Incompressible gas or moisture has entered the system
- The compressor is broken
- The voltage is too high or too low
Solution:
- Check for leaks and recharge the system with refrigerant
- Evacuate and recharge the system with refrigerant
- Replace the compressor
- Install a manostat to regulate the voltage
Problem: Poor heating performance
Possible Causes:
- The outdoor temperature is lower than 7°C (44.5°F)
- Cold air is entering through doors and windows
- Low refrigerant due to leak or long-term use
Solution:
- Use auxiliary heating device
- Make sure that all doors and windows are closed during use
- Check for leaks, re-seal if necessary and top off refrigerant
NOTE: If your problem persists after performing the checks and diagnostics above, turn off your unit immediately and contact an authorized service center.
Wiring Diagram
Manuals PDF
Portable Air Conditioner Manual
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