Mitsubishi Electric · MSZ-AP Air Conditioners
The ERR or NET LED on the Wi-Fi interface is flashing once per second, signaling an issue with the DNS (Domain Name System) settings required for internet communication.
Click steps to track your progress.
Check the DNS settings of your Router and ensure they are correct and functional.
Verify the DNS address settings configured for the Wi-Fi interface.
If settings appear correct, push the RESET Button on the Wi-Fi interface for more than 15 seconds to retry pairing.
Try using public DNS servers (e.g., Google DNS 8.8.8.8) in your Router settings temporarily to test.