Error 212 — 3 or more indoor units have the same address

What does 212 mean?

Three or more indoor units have been assigned the same address. Each unit must have a unique address for proper system communication.

• Duplicate address settings on multiple indoor units
• Incorrect address configuration during installation
• Human error in setting addresses

Click steps to track your progress.

1. 1

   Check the address settings for all indoor units.

2. 2

   Ensure each indoor unit has a distinct and unique address.

3. 3

   Refer to the system's manual for the correct procedure to set addresses.

4. 4

   If using rotary switches, confirm their positions are unique.