ERR Orange ON, NET Green Flashing — Server connected, but cannot connect to indoor unit

What does ERR ON NET Flashing (Server OK, Indoor Fail) mean?

The Wi-Fi interface has successfully connected to the Mitsubishi Electric server but failed to establish a connection with the indoor air conditioner unit. This suggests an issue with local communication between the interface and the unit.

• Problem with the communication cable between Wi-Fi interface and indoor unit
• Indoor unit is not powered on or not responding
• Internal fault with the Wi-Fi interface or indoor unit's communication module

Click steps to track your progress.

1. 1

   Check the physical connection between the Wi-Fi interface and the indoor unit to ensure it is secure.

2. 2

   Ensure the indoor unit is powered on and operating correctly.

3. 3

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

4. 4

   If the problem persists, consult your local Mitsubishi Electric office or dealer.