ESCO Air Conditioning Practice Exam

Low operating pressures and low system amperage draw in a residential split system are indicative of what issue?

1. Faulty condenser fan motor

2. High refrigerant charge

3. Low airflow across the evaporator

4. Loose TEV sensing bulb

The correct answer is: Faulty condenser fan motor

Low operating pressures and low system amperage draw in a residential split system are indicative of a faulty condenser fan motor. When the condenser fan motor is not functioning properly, it can lead to reduced heat transfer in the condenser unit, causing low operating pressures and low system amperage draw. This can result in poor cooling performance and inefficiency in the air conditioning system. In contrast, high refrigerant charge, low airflow across the evaporator, and a loose TEV sensing bulb are unrelated to the specific symptoms of low operating pressures and low system amperage draw in this scenario.