EF (7105) - Address setting error

What does EF (7105) mean?

There is an error in the address settings of one or more units within the Mitsubishi Electric PUMY Air Conditioner system, preventing them from communicating or being recognized correctly.

• Incorrect address settings for indoor or outdoor units
• Duplicate addresses assigned to multiple units on the network

Click steps to track your progress.

1. 1

   Note the error code displayed on the remote controller or outdoor unit.

2. 2

   Power off the Mitsubishi Electric PUMY Air Conditioner system at the main electrical breaker.

3. 3

   Wait for at least 30 seconds, then restore power to the system.

4. 4

   If the error persists, contact a qualified service technician to check and correct the address settings of all connected units.