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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:

Sep 28, 2017

by Nancy H. from Oshawa on Twintech Heating and Cooling

Furnace And Plentum

Work was performed in a clean and timely manner. The furnace and metal work was performed by the Twintech team (did not require separate contractor to do the metal work). Energy audit was arranged and promised rebates were received. The overall price was very competitive. We have recommended Twintech to several of our friends and family. Awesome job.

Sep 20, 2017

by Syd from Whitby on Twintech Heating and Cooling

HVAC System For New Home

Grant and Greg installed a heating and AC system in our new Linwood post and beam home. Post and beam can be challenging structures for running ductwork and their high ceilings and open concept frequently frustrate efforts at balancing air flow and controlling temperatures. But these guys did it and did it right the first time. Even the building inspector was impressed with what he saw. More importantly, the boys brought a high degree of trust and integrity to the job. Something in short supply these days.

Sep 13, 2017

by jenner iksmom from Oshawa on Twintech Heating and Cooling

New Furnace And A/C Installation

Very polite and professional. They removed my o
ld furnace and A/C and installed my new ones. They were efficient and thoroughly cleaned up when they were done! I would highly recommend them!

Sep 13, 2017

by Rob from Toronto on Twintech Heating and Cooling

New Furnace

Pro from start to finish. They were able to fix my gas fireplace at very little cost as well.

Aug 8, 2017

by murray mcmichael from Ajax on Twintech Heating and Cooling

Air Conditioner

Excellent installation very knowledgeable gentlemen! Would highly recommend them to all my friends for any hvac work !

Jul 23, 2017

by Private User from Private User on Twintech Heating and Cooling

Air Conditioner Repair

I have used Twintech many times over the years. They always arrive quickly and get the issue fixed. The most recent incident was when my air conditioner broke last week I called Greg at 11:30am and he was at my home by 2:30pm he had the unit fixed by 3:30pm. Twintech are very reliable and honest and they are experts in the field. I have already recommended them to many of my friends. I would not use anyone but them for my heating and air conditioning issues.

Jul 17, 2017

by Kate A in Pickering on Twintech Heating and Cooling

Air Condition

I would highly recommend these guys, professional, fast and competitive pricing. I moved into this place with no working AC unit with a 8 month baby, he was able to come with in a week to fix even in the busy summer days. He really values his customers , I am already recommending to my neighbors.

Jul 2, 2017

by Private User in Whitby on Twintech Heating and Cooling

Air Conditioner Purchase & Installation

Very impressed they arrive to quote even though I had forgotten to call them back to confirm date & time. They showed the day before installation to deliver the unit. Returned the next day as promised at 9am. Project was completed in a professional manner. They even fixed a few things that they noticed were not installed correctly, or to code by previous heating & air contractors we had at our residence before. Would recommend this company to everyone!

Jun 29, 2017

by Private User from Bowmanville on Twintech Heating and Cooling

Furnace Replacement

Greg removed old oil furnace and oil tank from basement relocated new Napoleon propane furnace to allow duct work to be rerouted to a much more suitable location. Moved air conditioner to the new furnace. Dave recommended two available grants to assist with cost. They kept to their original quoted price which was substantially lower than a competitors for the same furnace and work. They completed the work as stated when stated and left the area clean and tidy. We are very pleased with the outcome.

Jun 28, 2017

by astephenson in Oshawa on Twintech Heating and Cooling

Furnace And AC Installation

Twintech installed a Goodman furnace and ac init. Very professional install, both units are working well.