6600 (A0) Duplex address error

What does 6600 (A0) mean?

This error indicates that two or more units (outdoor, indoor, Fresh Master, Lossnay, or remote controller) in the system have been assigned the same address. This can also be caused by noise interference.

• There are 2 units or more with the same address in their controller.
• Noise interference on indoor/outdoor connectors.

Click steps to track your progress.

1. 1

   Check the address settings for all outdoor units, indoor units, Fresh Master units, Lossnay units, and remote controllers to ensure each has a unique address.

2. 2

   Turn off the power to the entire system for at least 5 minutes, then restart to clear any temporary communication glitches.

3. 3

   Inspect all indoor/outdoor connectors for secure connections and any signs of damage that could cause noise interference.

4. 4

   Consult the installation manual for correct addressing procedures and noise reduction guidelines.

5. 5

   If the error persists after verifying addresses, contact a qualified technician.