EF (7102) - Connecting unit number error

What does EF (7102) mean?

The number of connected indoor units is incorrect or not properly registered with the outdoor unit of the Mitsubishi Electric PUMY Air Conditioner system. This causes a system error.

• Incorrect number of indoor units connected to the outdoor unit
• Faulty address setting for one or more indoor units
• Outdoor unit multi-controller error related to unit detection

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 verify the number and addressing of all connected indoor units.