DS3 indicates what?

Prepare for the IC "A" School Test on Airflow, H2S, and Refrigerants. Utilize flashcards and multiple-choice questions with detailed hints and explanations to ensure success. Get exam-ready today!

Multiple Choice

DS3 indicates what?

Explanation:
DS3 is the Airflow Alarm Indicator. It signals that the system’s airflow has dropped below the safe range or there’s a ventilation fault, so you know to check that air supply is being delivered properly and that the sensors and fans are functioning. This isn’t about electrical power status (that would be a Power Indicator), nor is it the signal for a flag-drop situation, nor a sound-only alert (Local Audible Alarm). When DS3 comes on, review airflow readings, inspect ducts and filters, verify damper positions, and confirm the blower is operating to restore safe ventilation.

DS3 is the Airflow Alarm Indicator. It signals that the system’s airflow has dropped below the safe range or there’s a ventilation fault, so you know to check that air supply is being delivered properly and that the sensors and fans are functioning. This isn’t about electrical power status (that would be a Power Indicator), nor is it the signal for a flag-drop situation, nor a sound-only alert (Local Audible Alarm). When DS3 comes on, review airflow readings, inspect ducts and filters, verify damper positions, and confirm the blower is operating to restore safe ventilation.

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