4 flashes — Stuck Sail Switch

What does 4 flashes mean?

The diagnostic LED flashes four times, indicating that the sail switch is stuck in the closed position. This switch ensures proper airflow before ignition.

• Debris obstructing the sail switch
• Damaged sail switch mechanism
• Blower motor not running at sufficient speed

Click steps to track your progress.

1. 1

   Inspect the sail switch for any obstructions or damage.

2. 2

   Ensure the blower motor is operating at the correct speed.

3. 3

   Gently tap the sail switch mechanism to see if it frees up.