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MAC-558/559 LED 1 0.2 sec interval, LED 2 ON, LED 3 OFF

MAC-558/559 LED 1 flashes 0.2 sec, LED 2 solid ON — WPS Activated (PIN)

Mitsubishi Electric · Wi-Fi Interfaces

What does MAC-558/559 LED 1 0.2 sec interval, LED 2 ON, LED 3 OFF mean?

On MAC-558/559 models, a very rapid 0.2-second flash of LED 1 with LED 2 solid ON signifies that WPS (Wi-Fi Protected Setup) PIN mode is activated. This mode uses a PIN for pairing, often through router settings.

Common Causes

  • WPS PIN mode initiated on the Wi-Fi interface.
  • The interface is awaiting a PIN input for connection.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Refer to your router's manual or settings to locate the WPS PIN input option.

  2. 2

    Input the PIN displayed by the Wi-Fi interface (if applicable) into your router settings.

  3. 3

    Alternatively, reset the interface and try WPS PBC (Push Button Connect) if your router supports it.

  4. 4

    Consider using Access Point mode if WPS PIN setup proves difficult.

Browse all codes in this manual (19)
Verified technical data. Last updated: April 2026

Related Faults

App says 'unit was not found'App says 'unit was not found' — Wi-Fi Interface not communicating with home networkLED 1 flashingLED 1 flashing — WPS pairing in progress (MAC-558/559 models)MAC-558/559 LED 1 0.5 sec interval, LED 2 0.5 sec interval, LED 3 0.5 sec intervalMAC-558/559 LED 1, 2, and 3 flash at 0.5-sec intervals — Power ON or Software Download
Source: Mitsubishi Electric Wi-Fi Interfaces
Open Manual (Page 42)Search more codes in this manual