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Green LED blinking (Wireless LAN module)

Green LED blinking — Wireless LAN module attempting to connect

Mitsubishi Electric · Air Conditioning

What does Green LED blinking (Wireless LAN module) mean?

A blinking green LED on the Wireless LAN module indicates that it is trying to establish a connection to the Wi-Fi network. This is a normal status during network setup or reconnection.

Common Causes

  • The system is in network configuration mode.
  • The system is attempting to connect to a new or existing wireless network.
  • Changes were made to the wireless router or network settings.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure the Wireless LAN module is connected to a 2.4 GHz Wi-Fi network (not 5 GHz).

  2. 2

    Verify that the distance between the module and the router is not too great.

  3. 3

    Check if the router has reached its limit for connected devices.

  4. 4

    Confirm that the router is connected to the internet.

  5. 5

    Try re-establishing the wireless network connection following the setup instructions.

Browse all codes in this manual (170)
Verified technical data. Last updated: April 2026

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Source: Mitsubishi Electric Air Conditioning
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