ERR Orange Flashing, NET Green OFF — Router and indoor unit connection failed

What does ERR Flashing NET OFF (Router Fail, Indoor Fail) mean?

Both the connection to your Router and the connection to the indoor air conditioner unit have failed. This indicates a comprehensive communication issue for the Wi-Fi interface.

• Wi-Fi interface completely unable to connect to the Router
• Physical connection issue to the indoor unit
• Power issue affecting either the Wi-Fi interface or indoor unit's communication module

Click steps to track your progress.

1. 1

   Check your Router's status and ensure it is powered on and broadcasting Wi-Fi.

2. 2

   Verify the physical connection between the Wi-Fi interface and the indoor unit is secure.

3. 3

   Review the Wi-Fi interface setup steps and ensure all network settings are correct.

4. 4

   Push the RESET Button on the Wi-Fi interface for more than 15 seconds to retry pairing.

5. 5

   If problems persist, contact your local Mitsubishi Electric office.