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Green Heartbeat Steady On

Heartbeat LED - Green Steady On

Lennox · PRODIGY 2.0 Unit Controller

What does Green Heartbeat Steady On mean?

The Heartbeat LED is solid green, indicating the unit is in configuration or test mode, not normal operating mode.

Common Causes

  • Unit is in configuration mode
  • Unit is in test mode

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Exit configuration or test mode through the control interface.

  2. 2

    Ensure the unit is set to normal operating mode if needed.

  3. 3

    Consult the manual for specific steps to exit test/configuration mode.

Browse all codes in this manual (56)
Verified technical data. Last updated: April 2026

Related Faults

12Alarm 12 - High Pressure Switch S414Alarm 14 - High Pressure Switch S716Alarm 16 - High Pressure Switch S28
Source: Lennox PRODIGY 2.0 Unit Controller
Open Manual (Page 97)Search more codes in this manual