Mitsubishi Air Conditioner Error EE

⚡ Quick Answer: The Mitsubishi Air Conditioner error code EE indicates a communication failure between the indoor and outdoor temperature sensors. This issue often le... ⚠️ Difficulty Varies

What Does Error EE Mean?

The Mitsubishi Air Conditioner error code EE indicates a communication failure between the indoor and outdoor temperature sensors. This issue often leads to erratic display behavior, system shutdowns, and the unit's inability to cool effectively. Common causes include a mismatch in the indoor-outdoor unit combination or communication faults due to wiring issues. Addressing these problems may require checking configurations or wiring connections to restore normal operation.

Common Symptoms:

  • System shutdown or stopped operation when EE appears
  • EE displayed on indoor unit or remote
  • Failure to respond to remote inputs

Possible Causes

  • Indoor‑outdoor unit combination mismatch (improper configuration or SW5 settings) (medium)
  • Communication fault between indoor and outdoor units wiring or interface (medium)

How to Fix Error EE

DIY Fix Check basic pairing and power cycle

  1. Turn off the air conditioner at the main power switch or breaker.
  2. Wait 1–2 minutes and restore power.
  3. Check if the code clears and the unit resumes operation.
  4. Verify that the model combination (indoor/outdoor) matches the installation documentation.

Technician Only Inspect configuration and communication wiring

  1. Verify correct indoor and outdoor unit combination based on model and refrigerant compatibility.
  2. Check and measure continuity of communication wiring between indoor and outdoor units.
  3. Inspect SW5 and configuration settings on indoor unit control board per service manual.
  4. Test communication interface boards for faults and replace if necessary.

Parts needed: Communication wiring harness, Indoor unit control board, Outdoor unit interface board

🛑 When to Call a Pro:
  • If EE reappears after power cycle
  • If you are not experienced with electrical wiring and service procedures
  • If mismatch configuration is suspected but cannot be verified

Technical Specifications

wattage N/A
component Indoor/Outdoor Temperature Sensor
resistance 10-15 kOhms
part_number Mitsubishi 281A200A03
voltage_rating AC 220V

Common Questions

What does EE error mean on Mitsubishi Air Conditioner?

EE error indicates a communication failure between the indoor and outdoor units, leading to system shutdown and erratic display.

Can I fix Mitsubishi Air Conditioner EE error myself?

Yes, you can try power cycling the unit and checking the basic pairing of the indoor and outdoor units.

How much does it cost to fix EE error?

Repair costs typically range from ¥10,000 to ¥60,000, depending on parts and labor required.

When should I call a technician for EE?

Call a technician if the EE error persists after a power cycle or if you're unsure about electrical wiring and configurations.

Sources & References

Data last verified: 2026-07-01

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