The most common cause of airflow-related problems in air-conditioning units is:
A) Dirty air filters. B) Dirty condenser coils.
C) Electrical issues. D) Low refrigerant charge.
A
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What does PD stand for?
Review drawing number 523597B0A and then answer the question.
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What is illumination?
A) The candlepower incident on a surface. B) Candela per unit area incident on a surface. C) Lumens per unit area incident on a surface.
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____________________ systems use a spark igniter (direct spark ignition) or a silicon carbide igniter (hot surface ignition) to light the main gas burner directly.
Fill in the blank(s) with the appropriate word(s).
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Modern engines and transmissions require service by highly skilled and trained technicians.
Answer the following statement true (T) or false (F)
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