Are you a MIDEA air conditioner user who is looking for solutions to the error code displayed by your AC? If yes, keep reading because we have explained the meaning, causes, and solutions of all Midea air conditioners below.
Midea error code E0/F4
Meaning:
Error code E0 or F4 means there is an EEPROM error in your air conditioner.
Cause of error:
- The PCB is faulty.
- There was a mistake during the installation process.
Solution:
These error codes mostly appear due to electrical interference at the time of start-up.
- Try hard restarting the AC.
- If that does not work, it means the PCB is damaged and needs to be replaced.
- If your error code is E0 then replace the indoor PCB.
- If your error code is F4 then replace the outdoor PCB.
Midea error code E1
Meaning:
There is a communication fault between the indoor and outdoor units.
Cause of error:
- The outdoor or indoor PCB is faulty.
- There is a wiring mistake.
Solution:
- Make sure all your connections are proper and stable.
- Check the cable for continuity.
- If you are using a 4-core interconnecting method then make sure the W spade connection on the condensing unit has moved to 1L.
- Power OFF the AC and restart it after 5 seconds. Does the error code appear again?
- If YES, check all the wiring between the indoor unit and the outdoor unit, outdoor main PCB, and indoor main PCB. Are all wires properly connected?
- If yes, measure the DC voltage from S to N. The value of voltage should be fluctuation-positive and negative.
- Is the value fixed and non-fluctuating? If yes, is the wiring to the indoor main PCB connected properly? If YES, then change the indoor main PCB.
- Is the value fluctuating positively only? If yes, is the wiring to the outdoor main PCB connected properly? If yes, then change the outdoor main PCB.
Midea error code E2
Meaning:
Error code E2 means zero crossing signal detection error in the AC.
Cause of error:
- Fault in the PCB.
- Fault in the power supply.
- Fault in the power cables.
Solution:
- Check if the power supply and connections are normal. If yes, it means the indoor main PCB is faulty and needs to be replaced.
- If the power supply and connections are not normal, you need to correct the connections and turn the air conditioner ON when the power supply is good.
Midea error code E3/F5
Meaning:
The fan speed is abnormal.
Cause of error:
- Power surge.
- Fault in the PCB.
- Fault in the fan motor.
- Fault in the fan wheel.
- Fault in the wiring.
Solution:
- Shut down the unit and restart 5 seconds later. Does the error code appear again? If not, the problem is solved.
- If the error code appears again, shut down the unit and check if the fan rotates by hand. If not, the movement of the fan might be blocked or the bearing is broken. Fix the problem.
- If you can rotate the fan by hand, check if all the wires and connections of the fan motor are okay. If not, correct those connections and wires.
- Check if the fan motor is normal through index 1. If not, replace the fan motor. If the error remains, replace the main PCB.
- Check if the main PCB is normal through index 2. If not replace the fan motor. If the error remains, replace the main PCB.
Midea error code E4/E5/F1/F2/F3
Meaning:
If you receive error codes E4, E5, F1, F2, or F3 then it means that there is a temperature sensor failure.
E4 = Indoor room temperature sensor fault.
E5 = Indoor coil temperature sensor fault.
F1 = Outdoor room temperature sensor error.
F2 = Outdoor coil/condenser pipe temperature sensor error.
F3 = Compressor discharge air temperature sensor error.
Cause of error:
When the sampling voltage is above 4.94V or below 0.06V then this error code appears on the screen. Other reasons include:
- Fault in the PCB.
- Fault in the sensor.
- Mistake in the wiring.
Solution:
- Check the connection between the main PCB and the temperature sensor. Are all connections okay? If not, correct the connections.
- If the connections are okay, check the resistance value of the sensor according to this table:
- Is the resistance value normal? If yes, replace the outdoor or indoor main PCB.
- If not, replace the sensor.
Midea error code EC
Meaning:
Refrigerant leak detection error
Cause of error:
The initial temperature of the evaporator coil, known as the T-cool, is measured when the compressor first starts running. If the temperature of the evaporator coil, T2, remains less than Tcool-2 degrees Celsius for less than 4 seconds, for a total of 3 occurrences within the first 8 minutes of the compressor running, the display will show an “EC” error and the air conditioner will turn off.
Other reasons include:
- Fault in indoor PCB.
- Fault in T2 sensor.
- System problems like blockage or leakage.
Solution:
- Shut down the unit and restart it 5 seconds later. Does the error code appear again?
- If yes, check if the cool air is blowing out from the indoor air outlet. If yes, check if the T2 sensor is properly fixed. Correct its installation or replace the T2 sensor. If the error code still exists, then replace the indoor PCB.
- Check for any leakages on different parts such as liquid valves or gas valves. If there is a leakage, fix it and then recharge the refrigerant.
- If there is no leakage, check if there is any blockage. Such as the wielded points of pipes or the capillary. If yes, clear the blocking to fix the problem.
Midea error code F0
Meaning:
Error code F0 means overcurrent protection.
Cause of error:
The malfunction decision conditions for the air conditioner include detecting an abnormal rise in current in the specified current detection circuit.
Possible causes for this malfunction include power supply issues, system blockages, faulty PCB, wiring mistakes, and compressor malfunction.
Solution:
To diagnose the issue, the actual current being pulled by the unit should be tested. If the current is normal but the error persists, the outdoor PCB is likely at fault. If the current is high, the outdoor coil and airflow should be checked for blockages, and the fan rotation should be checked manually. If the problem is displayed immediately after powering up in standby mode, the outdoor PCB should be replaced.
Midea error code P0
Meaning:
Error code P0 means IPM protection.
Cause of error:
The malfunction decision conditions for the air conditioner include an abnormal voltage signal being sent from the IPM to the compressor drive chip. When this occurs, the display LED will show “P0” and the air conditioner will turn off.
Possible causes for this malfunction include wiring mistakes, IPM malfunction, faulty outdoor fan motor, compressor malfunction, faulty outdoor PCB, and a surge.
To diagnose the issue, it is recommended to check the wiring, test the IPM, check the fan motor and compressor, and also check the outdoor PCB.
Solution:
Here is how to solve this error code:
- Verify that all wiring connections are secure and functioning properly, with a focus on the jack plug connections. If not, correct the wires, connections, and connectors to solve the problem.
- Test the continuity of the IPM. Replace the main PCB if it is found to be faulty.
- Use the E3 error method to inspect the fan motor. Confirm that the outdoor coil has proper airflow and ventilation.
- Measure the compressor resistances. If the values are not normal, replace the compressor.
- If all these checks are normal, replace the main PCB. Inspect the reactor. In case the problem persists, it is advisable to contact the manufacturer or a professional technician for assistance.
Midea error code P1
Meaning:
The DC voltage is abnormal.
Cause of error:
- Fault in the PCB.
- Fault in the rectifier.
- Fault in the power supply.
Solution:
- Is the power supply normal? If not, disconnect the power supply of the unit and restart it once the power supply is normal.
- Are all connections and wires good? If not, correct all the wires and connections.
- When you turn on the unit and it is in standby mode, measure the voltage between P and N. It should be around 310V, 340V, or 380V depending on the type of unit. Consult with a technical engineer to confirm the exact voltage value. Next, start up the unit and measure the voltage between P and N again. It should be within the range of 220V to 400V. If the voltage measurements are not within the specified range, there may be a problem with the power supply that should be further investigated.
- If not, replace the IPM board if it is separate from the main PCB.
- If yes, replace the outdoor main PCB.
Midea error code P4
Meaning:
Error code P4 means inverter drive error
Cause of error:
When an abnormal inverter compressor drive signal is detected by the detection circuit, it may indicate a malfunction.
Possible causes for this malfunction include errors in wiring, malfunction of the IPM, failure of the outdoor fan motor, malfunction of the compressor, a faulty outdoor PCB, or a power surge.
To troubleshoot the problem, it is necessary to check for these potential causes and take appropriate actions accordingly.
Solution:
- Check if all wires between the compressor, module PCB, and control PCB are okay. If not, correct the connections.
- Check for IPM continuity. Are the resistance values of IPM terminals uniform? If not, replace the outdoor module PCB.
- If yes, replace the outdoor control PCB. Does the error occur again? If yes, replace the compressor.
Midea error code H1
Meaning:
Error code H1 on a Midea air conditioner indicates a malfunction in the communication between the main control chip and the communication chip.
Solution:
- Check the wiring connections to the communication chip to ensure they are secure.
- Inspect the communication chip for any physical damage or malfunction.
- Check the main control board for any damage or malfunction.
- Inspect the air filter to ensure it is clean and not clogged.
- Check the air ducts to ensure they are not blocked or obstructed.
- Clean the indoor unit’s coils and fins.
- If the problem persists, it is advisable to contact a professional technician or the manufacturer for assistance.
Midea error code H2
Meaning:
Error code H2 on a Midea air conditioner indicates that the quantity of the outdoor unit has decreased.
Solution:
- Check the wiring connections between the indoor and outdoor units to ensure they are secure.
- Inspect the outdoor unit for any physical damage or malfunction.
- Check the refrigerant level in the outdoor unit. If the level is low it needs to be refilled.
- Inspect the air filter in the indoor unit to ensure it is clean and not clogged.
- Check the air ducts to ensure they are not blocked or obstructed.
- Clean the outdoor unit’s coils and fins.
If the problem persists, it is advisable to contact a professional technician or the manufacturer for assistance.
Midea error code H3
Meaning:
Error code H3 on a Midea air conditioner indicates that the quantity of the outdoor unit has increased.
Solution:
- Check the wiring connections between the indoor and outdoor units to ensure they are secure.
- Inspect the outdoor unit for any physical damage or malfunction.
- Check the refrigerant level in the outdoor unit, if the level is too high it needs to be adjusted.
- Inspect the air filter in the indoor unit to ensure it is clean and not clogged.
- Check the air ducts to ensure they are not blocked or obstructed.
- Clean the outdoor unit’s coils and fins.
Midea error code H5
Meaning:
Error code H5, which is related to P2 protection, typically indicates a problem with the high-pressure sensor in the air conditioner. The error occurs when the high-pressure sensor detects a pressure that is too high for the safe operation of the air conditioner.
Solution:
- Check the refrigerant level in the air conditioner. If the refrigerant level is too low, this could be causing the high-pressure sensor to trigger.
- Inspect the condenser and evaporator coils for any blockages or restrictions in airflow. Clean the coils if necessary.
- Inspect the compressor for any issues such as a damaged motor or faulty bearing.
- Inspect the high-pressure sensor and check if it is working properly. Replace it if necessary.
- Check the wiring and connections in the air conditioner, making sure that all connections are secure.
- If the error persists after trying the above steps, it may be necessary to replace the main control board of the air conditioner.
Midea error code H6
Meaning:
The H6 error code is a P4 error that appears three times in 100 minutes, this error is indicating that the compressor protection has been triggered.
Solution:
To solve the error code H6 (P4 protection appears three times in 100 minutes) on a Midea air conditioner, you should follow these steps:
- Check the power supply voltage and ensure that it is within the range specified by the manufacturer.
- Check all wiring connections, especially where the jack plug connections meet, to ensure that they are properly connected.
- Check the IPM (intelligent power module) continuity.
- Check the fan motor using the E3 error method. Make sure the airflow and ventilation of the outdoor coil are good.
- Check the compressor resistances.
- If all of the above checks are good, replace the main PCB.
- Inspect the Reactor and check for any issues.
If the problem persists, consult a technical engineer for further diagnosis and repair.
Midea error code H7
Meaning:
Error code H7 means faulty indoor unit quantity.
Solution:
To solve this Midea air conditioner error code, the following steps should be taken:
- Check the number of indoor units connected to the system. Make sure that the number of units is correct and that all units are functioning properly.
- Inspect the wiring connections between the indoor units and the main control board. Make sure that all connections are secure and that there are no loose or damaged wires.
- Check the communication between the indoor units and the main control board. Make sure that all units are communicating properly and that there are no interruptions in the communication.
- Inspect the indoor units for any physical damage or malfunction. If any units are found to be damaged or malfunctioning, replace them with new units.
- If the problem persists after taking these steps, it may be necessary to replace the main control board or consult with a technician for further troubleshooting.
Midea error code H8
Meaning:
Error code H8 means a malfunction of the pressure sensor for the discharge pipe
Solution:
To solve the Midea AC error code H8, you should take the following steps:
- Check the connection and wiring of the pressure sensor for the discharge pipe. Make sure there are no loose wires and everything is properly connected.
- Check the pressure sensor itself for any damage or malfunction. If it is faulty, replace it.
- Check the discharge pipe for any blockages or restrictions. Make sure that there is proper airflow through the pipe.
- Check the refrigerant level in the system. Make sure that it is at the correct level and that there are no leaks.
- Consult the user manual or contact a professional technician for further troubleshooting and repair.
- If the problem persists after following these steps, it may be necessary to replace the outdoor PCB.
Midea error code H9
Meaning:
P9 protection appears three times in 60 minutes
Solution:
- Check the refrigerant pressure and level to ensure it is within the correct range.
- Inspect the compressor for any signs of damage or malfunction, and check its resistance value.
- Check the discharge pipe for any blockages or restrictions.
- Inspect the indoor unit for proper airflow and ventilation.
- Check the PCB board for any signs of damage or malfunction.
If the issue persists, consult the user manual or contact a professional technician for further troubleshooting and repair.
Midea error code R1/R2/R3
Meaning:
The refrigerant level is insufficient.
R1 = slightly insufficient.
R2 = significantly insufficient.
R3 = critically insufficient
Solution:
To solve the error code, first, check the refrigerant level in the system to ensure it is at the correct level. If the level is low, the system may need to be recharged with refrigerant.
Also, check for any leaks in the system that could be causing the refrigerant to escape. If a leak is found, it should be repaired before recharging the system with refrigerant. Additionally, check the pressure sensor for discharge pipe and clean it if it is dirty, or replace it if it is defective. If the problem persists, contact a professional HVAC technician for further diagnosis and repairs.
Midea error code R1/R2 (excessive refrigerant)
Solution:
To solve the Midea AC error code which indicates a critical excess of refrigerant, the following steps may be taken:
- Check the refrigerant level using a refrigerant charging scale or a refrigerant pressure gauge.
- If the level is found to be excessive, locate the source of the leak and repair it.
- After the leak has been repaired, evacuate the system to remove any excess refrigerant.
- Recharge the system with the correct amount of refrigerant as specified by the manufacturer.
- Check the system for proper operation and proper refrigerant levels.
If the problem persists, consult with a professional HVAC technician to diagnose and repair the issue.
Midea error code EE
Meaning:
Failure of water level alarm
Solution:
- Check the water level in the drain pan and make sure it is not overflowing.
- Inspect the drain hose for any blockages or kinks that may be preventing proper drainage.
- Check the float switch or water level sensor and make sure it is functioning properly.
- Check the drain pump and make sure it is not clogged or malfunctioning.
If the problem persists, consult the user manual or contact a professional for further troubleshooting and repair.
Midea error code P2
Meaning:
Compressor overheating protection
Solution:
To solve the Midea AC error code P2, you should check the following:
- Check the air filter, and clean or replace it if it is dirty.
- Make sure that the air intake and outtake vents are not blocked by any objects.
- Check the condenser and evaporator coils for any blockages or debris.
- Check the compressor for any signs of damage or leakage.
- Check the refrigerant levels and make sure they are at the correct levels.
- Check the compressor and fan motor for proper operation and check for any abnormal noise or vibration.
If all of the above checks are normal and the error code still appears, it could be a malfunction of the PCB or compressor and should be inspected by a professional technician.
Midea error code P3
Meaning:
Error code P3 means low outside temperature protection.
Solution:
To solve Midea AC error code P3 (low outside temperature protection), the following steps can be taken:
- Check the outdoor unit’s air filter and clean or replace it if it is dirty.
- Check the outdoor unit’s coil and fins for any blockages or debris and clean as needed.
- Check the outdoor unit’s fan motor and make sure it is functioning properly.
- Check the compressor and make sure it is not overheating.
- Check the refrigerant levels and make sure they are correct.
- Check the outdoor unit’s thermostat and make sure it is functioning properly.
- If the problem persists, contact a licensed HVAC technician for further troubleshooting and repairs.
Please note that these steps are for general troubleshooting, for specific guidance it is better to contact the manufacturer.
Midea error code P4
Meaning:
Compressor drive error
Solution:
To solve the Midea AC error code P4 (compressor drive error), the following steps can be taken:
- Check the wiring connections and make sure they are secure and properly connected.
- Check the compressor motor and make sure it is running properly.
- Check the outdoor unit’s coil for any blockages or restricted airflow.
- Check the outdoor unit’s fan rotation by hand.
- Check the compressor’s resistances.
- If all the above steps are fine, replace the outdoor PCB.
If the problem persists, consult technical support for further assistance.
Midea error code P5
Meaning:
Mode conflict
Solution:
To solve Midea AC error code P5 (mode conflict), the following steps can be taken:
- Check the settings on the air conditioner remote control or thermostat to ensure that the desired mode (cooling, heating, etc.) is selected correctly.
- Make sure that all the indoor and outdoor units are in the same mode, as a mismatch can cause a mode conflict error.
- Check for any blockages in the air filter or ducts that could be preventing proper airflow.
- Check the refrigerant levels and pressure to ensure they are within the proper range.
- Inspect the wiring and connections to ensure that they are tight and secure.
- If the problem persists, consult the manual of the unit and the service technician of the unit to get the proper solution.
Midea error code P6
Meaning:
Compressor low-pressure protection error
Solution:
To solve Midea AC error code P6, you can try the following steps:
- Check the refrigerant level and make sure it is at the correct level. If it is low, add more refrigerant.
- Check the compressor for any signs of damage or wear, such as leaks or worn parts.
- Check the compressor’s discharge pipe for any blockages or restrictions that could be causing the low pressure.
- Check the compressor’s suction pipe for any blockages or restrictions that could be causing the low pressure.
- Check the compressor’s oil level and make sure it is at the correct level.
- Check the compressor’s cooling fan to make sure it is working properly.
- Check the compressor’s thermal protector to make sure it is working properly.
- Check the compressor’s wiring connections to make sure they are all secure and properly connected.
If you have checked all of the above and the issue persists, it may be necessary to call a professional technician to diagnose and repair the problem.
Midea error code P7
Meaning:
Error in the external IGBT sensor
Solution:
To solve the external IGBT sensor error, the following steps can be taken:
- Check the wiring connections of the IGBT sensor and ensure they are secure and properly connected.
- Inspect the IGBT sensor for any physical damage or wear and replace it if necessary.
- Check the operation of the IGBT sensor and ensure it is functioning properly.
- Check the IGBT sensor’s connections and replace any corroded or damaged parts.
- If the problem persists, contact a qualified technician for further assistance.
It’s important to note that the solution may vary based on the model of your air conditioner, it’s better to refer to the user manual for exact solutions or contact the manufacturer or a technician.
Midea error code FA
Meaning:
Malfunction of communication with the indoor unit.
Solution:
To solve the Midea AC error code FA, the following steps can be taken:
- Check the wiring connections between the indoor and outdoor units to ensure they are securely connected and not damaged.
- Check the communication cable between the indoor and outdoor units to ensure it is properly connected and not damaged.
- Make sure that the indoor and outdoor units are matched correctly.
- Check the settings of the indoor and outdoor units to make sure they are compatible and configured correctly.
- If the problem persists, contact a qualified technician to check the main control board and other electronic components for any malfunctions or damage.
- If the problem is still unresolved, the main control board may need to be replaced.
Midea error code CB3
Meaning:
The HT hydro module is beyond the connection range.
Solution:
To solve the Midea AC error code Cb3, the following steps can be taken:
- Check if the connection between the indoor unit and the hydro module is secure. Make sure the wires are not loose or disconnected.
- Check if the hydro module is functioning properly. If it’s not, replace it.
- Check if the indoor unit is communicating properly with the hydro module. Make sure the communication cable is not damaged.
- Check if the indoor unit is within the connection range of the hydro module. The distance between the indoor unit and the hydro module should not exceed the recommended range.
- If the issue persists after trying the above steps, it may be necessary to consult with a professional technician for further diagnosis and repair.
Midea error code xL5
Meaning:
Zero speed protection
Solution:
- Check the wiring connections to ensure they are secure and properly connected.
- Check the continuity of the compressor and ensure it is not damaged or malfunctioning.
- Check the fan motor and ensure it is functioning properly and not causing the zero-speed protection to activate.
- Check the outdoor coil and ensure there is proper airflow and ventilation.
- Check the compressor resistances and ensure they are within the proper range.
- Check the main PCB and replace it if it is faulty.
Midea error code xL0
Meaning:
Inverter module error
Solution:
To solve Midea AC error code xL0, first, check the wiring connections and ensure that they are properly connected. Next, check the inverter module for any signs of damage or malfunction. If the module is found to be faulty, it will need to be replaced.
Midea error code xL1
Meaning:
DC generatrix low voltage error
Solution:
To solve the error code xL1 on a Midea air conditioner, the following steps should be taken:
- Check for any loose or damaged wiring connections, particularly those related to the inverter module.
- Check the voltage of the DC generatrix and ensure it is within the correct range.
- Check for any issues with the inverter module itself, such as damage or malfunction.
If the problem persists, consult technical support or a qualified technician for further troubleshooting.