What does DS1 indicate if it is extinguished?

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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

What does DS1 indicate if it is extinguished?

Explanation:
DS1 is a status indicator that lights when 115 VAC external power is available. If DS1 is extinguished, it means there is no external power reaching the system, so the power supply has been lost. The indicator going dark specifically points to a loss of 115 VAC external power rather than a sensor fault, nuisance alarm, or a reset request. When power is restored, DS1 should light again, confirming the power is back.

DS1 is a status indicator that lights when 115 VAC external power is available. If DS1 is extinguished, it means there is no external power reaching the system, so the power supply has been lost. The indicator going dark specifically points to a loss of 115 VAC external power rather than a sensor fault, nuisance alarm, or a reset request. When power is restored, DS1 should light again, confirming the power is back.

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