Alarm 137 — Low Outdoor Airflow

What does Alarm 137 mean?

This alarm is triggered when the actual outdoor air intake is less than the target outdoor air by a specified percentage (set by Parameter 239) for a prolonged period (set by Parameter 243).

• Outdoor air damper is not opening sufficiently.
• Obstruction in the outdoor air intake.
• Malfunctioning outdoor air sensor.
• Incorrect settings for Parameter 239 or 243.
• Reduced supply airflow demand.

Click steps to track your progress.

1. 1

   Inspect the outdoor air intake for obstructions.

2. 2

   Verify the operation of the outdoor air damper.

3. 3

   Check the outdoor air sensor for accuracy.

4. 4

   Review the settings for Parameter 239 (Advanced Airflow Outdoor CFM Alarm Set Point) and Parameter 243 (duration).

5. 5

   Ensure the system is correctly configured for outdoor air intake.