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Amber LED blinking

Wi-Fi Error — Connection issue

Lennox · Communicating Systems

What does Amber LED blinking mean?

A blinking amber light on the System Status LED indicates a problem with the Wi-Fi connection. This could mean Wi-Fi is not connected, no network is in range, or there might be a hardware issue.

Common Causes

  • Wi-Fi not connected
  • No Wi-Fi network in range
  • Intermittent Wi-Fi connection
  • Wi-Fi hardware error

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure your Wi-Fi router is powered on and functioning.

  2. 2

    Check if the Wi-Fi network is within range of the device.

  3. 3

    Restart your Wi-Fi router and the Lennox system.

  4. 4

    Verify Wi-Fi credentials and network settings in the app or system interface.

Browse all codes in this manual (41)
Verified technical data. Last updated: April 2026

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Source: Lennox Communicating Systems
Open Manual (Page 23)Search more codes in this manual