Indoor/Outdoor Unit Address Setting Error (Duplication)

What does E31 mean?

There is a duplication of an indoor unit address number within the U00-U47 range, or an outdoor unit address setting error has occurred. This conflict prevents proper system communication and unit identification.

• Multiple indoor or outdoor units assigned the same address.
• Address setting switches (DIP switches) on multiple units are set identically.
• Auto-addressing mechanism failed to resolve address conflicts.
• Incorrect address setting on the master controller.
• Duplicate unit IDs in the system configuration.

Click steps to track your progress.

1. 1

   Verify the address settings of all indoor units, ensuring each has a unique address within the U00-U47 range.

2. 2

   Check the outdoor unit address setting for correctness according to system design.