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The tables below contain lists of error codes for several models of the Midea air conditioners. For each error code, there is a short explanation of the type of the malfunction. There are separate tables for the following series of Midea ACs: R series, 9V, 9A, and the Cassette / Ceiling&Floor series. If you're looking for information on AC Outdoor Units, you will also nd it below.


Midea air conditioner error code R series

CODE: E0.
RESULT: EEPROM parameter error.

CODE: E1.
RESULT: Indoor / outdoor units communication protection.

CODE: E2.
RESULT: Zero-crossing signal error.

CODE: E3.
RESULT: Fan speed out of control.

CODE: E5.
RESULT: Open or short circuit of outdoor temperature sensor.

CODE: E6.
RESULT: Open or short circuit of room or evaporator temperature sensor.

CODE: P0.
RESULT: IGBT over-strong current protection.

CODE: P1.
RESULT: Over voltage or too under voltage protection.

CODE: P2.
RESULT: Temperature protection of compressor top.

CODE: P4.
RESULT: Inverter compressor drive error.

Midea air conditioner error code 9V series

CODE: E0.
RESULT: EEPROM.

CODE: E1.
RESULT: Indoor / outdoor units communication protection.

CODE: E2.
RESULT: 3 Zero-crossing signal error.

CODE: E3.
RESULT: Indoor fan speed out of control.

CODE: E5.
RESULT: Outdoor unit temp. sensor or connector of temp. sensor is defective.

CODE: E6.
RESULT: Open or short circuit of room or evaporator temperature.

CODE: E7.
RESULT: Outdoor fan speed out of control.

CODE: P0.
RESULT: IBM malfunction or IGBT over-strong current protection.

CODE: P1.
RESULT: Over voltage or too under voltage protection.

CODE: P2.
RESULT: Temperature protection of compressor top.

CODE: P4.
RESULT: Compressor position protection.

CODE: P5.
RESULT: Inverter module protection.

Midea air conditioner error code 9A series

CODE: E0.
RESULT: EEPROM.

CODE: E1.
RESULT: Indoor / outdoor units communication protection.

CODE: E2.
RESULT: Zero-crossing signal error.

CODE: E3.
RESULT: Indoor fan speed out of control.

CODE: E5.
RESULT: Outdoor unit temp. sensor or connector of temp. sensor is defective.

CODE: E6.
RESULT: Open or short circuit of room or evaporator temperature.

CODE: E7.
RESULT: Outdoor fan speed out of control.

CODE: P0.
RESULT: IBM malfunction or IGBT over-strong current protection.

CODE: P1.
RESULT: Over voltage or too under voltage protection.

CODE: P2.
RESULT: Temperature protection of compressor top.

CODE: P4.
RESULT: Compressor position protection.

CODE: P5.
RESULT: Inverter module protection.

Midea AC Outdoor Units error code (except M5OA-36HRDN1-Q model)

CODE: E0.
RESULT: EEPROM error.

CODE: E1.
RESULT: No A Indoor unit coil outlet temp. sensor or connector of sensor is defective.

CODE: E2.
RESULT: No B Indoor unit coil outlet temp. sensor or connector of sensor is defective.

CODE: E3.
RESULT: No C Indoor unit coil outlet temp. sensor or connector of sensor is defective.

CODE: E6.
RESULT: No D Indoor unit coil outlet temp. sensor or connector of sensor is defective.

CODE: E4.
RESULT: Outdoor unit temp. sensor or connector of temp. sensor is defective.

CODE: E5.
RESULT: Compressor voltage protection.

CODE: E7.
RESULT: Communication malfunction between outdoor main chip and compressor control chip.

CODE: P0.
RESULT: Temperature protection of compressor discharge or compressor top. For M4OC-36HRDN1-Q,it only means compressor discharge temp.protection.

CODE: P1.
RESULT: High pressure protection(only for M4OC1-27HRDN1-Q, M4OC-36HRDN1-Q).

CODE: P2.
RESULT: Low pressure protection(only for M4OC1-27HRDN1-Q, M4OC-36HRDN1-Q).

CODE: P3.
RESULT: Compressor current protection.

CODE: P4.
RESULT: Inverter module protection.

CODE: P6.
RESULT: Condenser high-temperature protection.

Midea AC Outdoor Units error code For M5OA-36HRDN1-Q model

CODE: E0.
RESULT: EEPROM error.

CODE: E1.
RESULT: No A Indoor unit coil outlet temp. sensor or connector of sensor is defective.

CODE: E2.
RESULT: Communication malfunction between outdoor unit and indoor units.

CODE: E3.
RESULT: Communication malfunction between outdoor main chip and compressor control chip.

CODE: E4.
RESULT: Outdoor unit temp. sensor or connector of temp. sensor is defective.

CODE: E5.
RESULT: Compressor voltage protection.

CODE: E6.
RESULT: PFC module protection.

CODE: P0.
RESULT: Compressor top. temperature protection.

CODE: P1.
RESULT: High pressure protection.

CODE: P2.
RESULT: Low pressure protection.

CODE: P3.
RESULT: Compressor current protection.

CODE: P4.
RESULT: Compressor discharge high-temperature protection.

CODE: P5.
RESULT: Condenser high-temperature protection.

CODE: P6.
RESULT: Inverter module protection.

CODE: F1.
RESULT: No A Indoor unit coil outlet temp. sensor or connector of sensor is defective Midea air conditioner error codes.

CODE: F2.
RESULT: No B Indoor unit coil outlet temp. sensor or connector of sensor is defective.

CODE: F3.
RESULT: No C Indoor unit coil outlet temp. sensor or connector of sensor is defective.

CODE: F4.
RESULT: No D Indoor unit coil outlet temp. sensor or connector of sensor is defective.

CODE: F5.
RESULT: No E Indoor unit coil outlet temp. sensor or connector of sensor is defective.

Midea M2OC-18HRDN1-M air conditioner error code

CODE: EO.
RESULT: EEPROM parameter error.

CODE: E1.
RESULT: No 1 Indoor units pipe temp, sensor or connector of pipe temp, sensor is defective.

CODE: E2.
RESULT: No 2 Indoor units pipe temp, sensor or connector of pipe temp, sensor is defective.

CODE: E3.
RESULT: No 3 Indoor units pipe temp, sensor or connector of pipe temp, sensor is defective.

CODE: E6.
RESULT: No 4 Indoor units pipe temp, sensor or connector of pipe temp, sensor is defective.

CODE: E4.
RESULT: Open or short circuit of outdoor temperature sensor.

CODE: E5.
RESULT: Compressor volt protection.

CODE: E7.
RESULT: Communication error between outdoor IC and DSP.

CODE: PO.
RESULT: Temperature protection of compressor top.

CODE: P1.
RESULT: High pressure protection (just for 36K 1x4 units).

CODE: P2.
RESULT: Low pressure protection (just for 36K 1x4 units).

CODE: P3.
RESULT: Compressor current protection.

CODE: P4.
RESULT: Inverter module protection.

CODE: P5.
RESULT: Outdoor temp, too low protection.

CODE: P6.
RESULT: Condenser high-temperature protection.

CODE: P7.
RESULT: Compressor driving protection.

CODE: PF.
RESULT: PFC protection (just for 36K 1x4 units).

Midea MSX-07HRN1-QC2 air conditioner error code

CODE: E1.
RESULT: EEPROM error.

CODE: E2.
RESULT: Zero crossing detection error.

CODE: E3.
RESULT: Indoor fan speed has been out of control.

CODE: E4.
RESULT: Over current protection occurs 4 times.

CODE: E5.
RESULT: The T1 sensor is open circuit or short circuit.

CODE: E6.
RESULT: The T2 sensor is open circuit or short circuit.

CODE: E7.
RESULT: The T3 sensor is open circuit or short circuit.

CODE: E9.
RESULT: Indoor / outdoor units communication error.


See What Our Customers Are Saying:

by Private User on Twintech Heating and Cooling

They came the day and time they had planned for us and were very fast and efficient! The AC works amazing and it is amazing during the heat of the summer we have already got! Thanks for everything you did for us!

by Private User on Twintech Heating and Cooling

Would recommend this company to friends and family in a heartbeat. Very professional , on time and left no mess when the job was done.

by stefany on Twintech Heating and Cooling

Great customer service. Responsive and professional. I would highly recommend Twintech, I used them previously for repair service and a new air conditioner- very satisfied.

by dianeramsden on Twintech Heating and Cooling

Our air conditioner failed. Made a call and within 15 min a technician was at our door.
The issue was fixed and many suggestions were provided.
Thanks to Mitch. Great service !

by Kazuko on Twintech Heating and Cooling

Our furnace was rattling, as soon as we put our air conditioner on this past week. We had researched looking for a company that was Registered with Better Business Bureau, and this company TwinTech, had A+ Rating. Scott, was immediately helpful via text/phone and sent his technician as soon as he was able...Mitchell/technician provided great professional service. Thank you TwinTech.
Sean and Debbie

by ANOOP on Twintech Heating and Cooling

I contacted various companies when looking to install a new furnace and I found Twintech to be transparent with their communication and approach. They had options to suit my various requirements and the price vs quality was very good. The after installation communication was also very good and they answered all queries I had.

by Private User on Twintech Heating and Cooling

My furnace broke down last month. The team was quick to respond, courteous, professional and mindful of COVID-19 concerns. I highly recommend them if you are considering replacing or servicing your HVAC equipment.

by Private User on Twintech Heating and Cooling

I was very happy with the installation and price. I would definitely recommend. Thank you Twintech.

by Dorothy on Twintech Heating and Cooling

Had furnace and air conditioning unit put in. They did an excellent job great price and everything clean as can be, I was very pleased

by Barry on Twintech Heating and Cooling

All winter I have had an issue with very little heat reaching the 2nd floor of our home. After this past winter ended I decided to look into this. I found Twintech Heating and Cooling on line and started the process. After explaining my problem I had a call form Twintech and the tech came out and walked through things with me. The problem was the heating vent pipe had been dropped down in size by someone years ago causing little heat reaching the 2nd floor. Further into checking out the older furnace and AC they found a few things not properly installed by the last install of the old furnace and also that the AC was on it's last legs. I asked for a quote and waited a few days and we decided to go ahead with Twintech. They called a few days before to set up an installation time and date. The day of the install the guys were a half hour early which was a plus. The day of the install was great, the guys worked away removing the old furnace and AC.After which they installed the new furnace and AC. After they cleaned up the basement with all their tools and scrap metal etc. they came back inside to walk thru what they did. They also tested both the furnace and cooling systems to make sure everything worked and I the customer was happy. I now have heat on the 2nd floor for next winter. The guys from Twin tech were very professional. Their work habits and knowledge of the job was excellent. Their workmanship was just excellent, it was just up there with my standards as a homeowner. I am very pleased to have chosen Twintech for my new furnace and AC.. If I had to rate this experience with Twintech this company is a 10 in my books.Product,workmanship and customer care says it all.

See What Our Customers Are Saying:

by Robert Rogers on Twintech Heating and Cooling

Very pleased with the professional service that TwinTech Heating and Cooling provided in replacing my furnace. I got several quotes from different service providers. Their price was excellent and they explained the features very well. We are very glad we went with TwinTech and highly recommend their services.

by Robert Mizuno on Twintech Heating and Cooling

We were new homeowners in need of a second opinion. TwinTech Heating & Cooling were Amazing and professional. Very knowledgeable and great service all around. Recommend to anyone looking for honest and reliable services. Treated with respect and care. Thank you Greg, Mitch and Bob!

by Ruth on Twintech Heating and Cooling

TwinTech is an excellent and honest company! I called them for a second opinion after being told by another company that I needed to replace my furnace. Turns out this was not the case at all! I did not need a new furnace. TwinTech did not push to make an unnecessary sale and saved me from a huge expense. Bob and Mitch were extremely professional and above all honest! I definitely recommend TwinTech!

by Anna Chin on Twintech Heating and Cooling

Amazing experience with TwinTech Heating & Cooling! Their team was professional, knowledgeable, and efficient from start to finish. They installed my new furnace quickly and left everything spotless. The technicians took the time to explain everything and made sure I was comfortable with the system before they left. Great customer service and fair pricing. I highly recommend them for anyone needing HVAC services!

by Connor Agnew on Twintech Heating and Cooling

Great experience all around. Bob was sharp and easy to talk to, and Greg handled the installation perfectly. Would hire them again in a heartbeat.

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