An Airzone is an ancillary device for Mitsubishi Electric AC units. It is installed by your HVAC unit to read settings and programming from the thermostat.

If your device is listed as "Unreachable" in our platform, this means that we have lost our connection signal and are unable to monitor or manage it's programming.

Unreachability could be caused by the device needing a reset or issues caused by WiFi, power or hardware malfunctions.

Troubleshooting Steps:

First, check that the thermostat has power

1. Click on the home screen to "wake up" the thermostat

2. If it powers on, the thermostat does not have power issues

3. If it does not power on, check our other guides for assistance
   

Next, reboot the Airzone device

1. Locate the device in your store

2. Press and hold the reset button until the LED signal switches off

3. The device should reboot and reestablish it's connection

If problems persist, reach out to our team for assistance:

• Email: success@davidenergy.com

• Phone: 347-771-8233