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Continuous Flash

Amber LED Continuous Flash — Emergency Mode (No Infinity Thermostat)

Carrier · Heat Pumps

What does Continuous Flash mean?

The Amber LED is continuously flashing, indicating the system is operating in Emergency Mode. This occurs when a regular thermostat is used instead of an Infinity User Interface, limiting the system to nominal (fixed speed) capacity.

Common Causes

  • Regular thermostat used in Emergency mode
  • No Infinity User Interface installed

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    If full variable capacity operation is desired, install an Infinity User Interface.

  2. 2

    Verify that the system is intended to be in emergency mode if an Infinity User Interface is not present.

  3. 3

    Understand that in this mode, the system will operate at nominal capacity only.

Browse all codes in this manual (40)
Verified technical data. Last updated: April 2026

Related Faults

1 (1 sec ON), longer pause (2 sec OFF)Amber LED flashes 1 time (1 sec ON) then longer pause (2 sec OFF) — Variable Capacity Range Cutback1, pauseAmber LED flashes 1 time then pauses — Variable Capacity Operation16Communication Loss Event 16
Source: Carrier Heat Pumps
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