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DELAY UP TO 20 SEC

Display Message - DELAY UP TO 20 SEC

Lennox · PRODIGY 2.0 Unit Controller

What does DELAY UP TO 20 SEC mean?

A short delay is in progress, typically before the compressor starts after the outdoor fan is energized. This is normal operation for some models.

Common Causes

  • Normal system start-up sequence
  • Compressor start-up delay

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Wait for the 20-second delay to complete.

  2. 2

    The compressor should start automatically.

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