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RED on, GRN blink, YEL off

RED LED on, GREEN LED blinking, YELLOW LED off - Normal operation

Samsung · Air Conditioning

What does RED on, GRN blink, YEL off mean?

This LED pattern indicates that the outdoor unit is operating normally. The RED LED is continuously on, the GREEN LED blinks, and the YELLOW LED is off.

Common Causes

  • The air conditioner is functioning as expected.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    No action is required as this indicates normal operation.

  2. 2

    Monitor the unit for any changes in performance or other error displays.

  3. 3

    Ensure the indoor unit display also shows expected status.

Browse all codes in this manual (137)
Verified technical data. Last updated: April 2026

Related Faults

Abnormal displayAbnormal outdoor LED display - Error modeAll LEDs offAll outdoor unit LEDs off - No powerC101/C102C101 or C102 - Indoor to outdoor communication error
Source: Samsung Air Conditioning
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