CAMT - Certified Apartment Maintenance Technician HVAC Systems and Service Questions and Answers

Question 1

A resident reports that their air conditioning unit is running, but the air blowing from the vents is not cold.
During your inspection, you notice a significant amount of ice buildup on the evaporator coil.
What is the MOST likely cause of this issue?

Accepted Answer

A dirty air filter restricting airflow.

Answer

A malfunctioning thermostat.

Answer

A clogged condensate drain line.

Answer

An oversized HVAC unit.

Question 2

As part of a preventive maintenance schedule for an apartment community's HVAC systems, which of the following tasks should be performed most frequently?

Accepted Answer

Inspecting and cleaning or replacing air filters.

Answer

Checking refrigerant levels.

Answer

Cleaning the evaporator and condenser coils.

Answer

Lubricating motor bearings.

Question 3

A resident complains of weak airflow coming from the vents in their apartment. After confirming the air filter is clean, which of the following is the next logical step in troubleshooting the problem?

Accepted Answer

Checking for blocked or closed supply and return vents.

Answer

Immediately adding more refrigerant to the system.

Answer

Replacing the thermostat.

Answer

Inspecting the compressor for electrical faults.

Question 4

When handling refrigerants during HVAC service, a CAMT must adhere to specific safety and environmental protocols mandated by the EPA. According to the Clean Air Act, what is strictly prohibited?

Accepted Answer

Intentionally venting refrigerant to the atmosphere.

Answer

Recycling refrigerant on-site.

Answer

Topping off a system that is low on refrigerant.

Answer

Using a universal refrigerant for all system types.

Question 5

You respond to a work order for an HVAC unit making a loud banging or clanking noise during operation. What is the most probable cause of this specific sound?

Accepted Answer

A loose or damaged component, such as a blower fan blade or motor mount.

Answer

Low refrigerant levels.

Answer

A dirty condenser coil.

Answer

An electrical issue with the thermostat.

Question 6

To ensure the outdoor condenser unit functions efficiently, what is a critical, routine maintenance task a CAMT should perform?

Accepted Answer

Ensuring the area around the unit is clear of leaves, debris, and vegetation.

Answer

Painting the unit to prevent rust.

Answer

Building a fence tightly around the unit for protection.

Answer

Frequently spraying the unit with a high-pressure water hose.

A resident reports that their air conditioning unit is running, but the air blowing from the vents is not cold.During your inspection, you notice a significant amount of ice buildup on the evaporator coil.What is the MOST likely cause of this issue?

A resident reports that their air conditioning unit is running, but the air blowing from the vents is not cold.
During your inspection, you notice a significant amount of ice buildup on the evaporator coil.
What is the MOST likely cause of this issue?