Why Is My Air Compressor Not Working? | A Comprehensive Guide

As experts in the air compressor industry, we understand how important it is to keep your equipment running smoothly. Unfortunately, even with proper maintenance, problems can arise, leaving you wondering what’s wrong with your air compressor.

In this article, we’ll provide a comprehensive guide to diagnosing common air compressor issues, so you can get back up and running in no time.

Common Air Compressor Issues

When it comes to compressor troubleshooting, it’s essential to identify the root cause of the issue before implementing any fixes. We’ll cover the most common compressor issues and how to resolve them.

Compressor Fails to Start

If your compressor fails to start, the first thing to check is the power source. Ensure that the compressor is plugged in correctly and that the outlet is functioning correctly. If the outlet is working correctly, then check the power switch on the compressor. If the power switch is in the “on” position, then the issue may be with the motor starter or the pressure switch.

Compressor Runs but Fails to Build Pressure

If your compressor is running, but the pressure is not building, it’s likely due to a leak in the system. Check all the fittings, hoses, and valves to ensure that there are no leaks. If there are no leaks, then the issue may be with the pressure switch.

Compressor is Noisy

Compressor noise can be due to several factors, including worn bearings, a loose belt, or a malfunctioning motor. Start by inspecting the motor and compressor pulley for any signs of wear. If you don’t find any issues, then check the belts for proper tension.

Compressor is Overheating

If your compressor is overheating, it could be due to a malfunctioning thermal overload switch, a dirty air filter, or insufficient airflow around the compressor. Start by checking the air filter and cleaning it if necessary. If the air filter is not the issue, then check the thermal overload switch and replace it if necessary.

Most common cause of air compressor failure

1. Power Supply: Issues If your air compressor won’t start, the first thing to check is the power supply. Ensure that the air compressor is correctly plugged into a grounded electrical outlet, and the circuit breaker is not tripped. You may also want to check the power cord for any visible damage or loose connections. If the power supply is okay, move on to the next step.
2. Pressure Switch Issues: The pressure switch is responsible for turning the air compressor on and off when the tank reaches the maximum or minimum pressure levels, respectively. If the air compressor won’t start or won’t stop running, the pressure switch may be faulty. To test the pressure switch, disconnect the power supply, remove the cover, and check the switch for continuity using a multimeter. If there is no continuity, replace the pressure switch.
3. Motor Issues: If the air compressor motor won’t start or runs slowly, there may be a problem with the motor. Check the motor for visible damage, such as burned-out windings, and listen for any unusual sounds, such as grinding or humming. Also, check the motor capacitor, which provides the initial burst of energy to start the motor. If the capacitor is defective, replace it.
4. Air Leaks: If the air compressor runs continuously, but the tank pressure does not increase, there may be an air leak. Check the connections, fittings, hoses, and valves for leaks. To do this, spray soapy water on the suspect areas and look for bubbles. Tighten loose connections or replace damaged components.
5. Clogged Air Filter: Air compressor is running but not delivering enough air pressure, the air filter may be clogged with dirt or debris. Clean or replace the air filter to restore proper airflow.
6. Defective Pressure Relief Valve: The pressure relief valve is a safety feature that releases excess pressure from the tank to prevent it from exploding. If the pressure relief valve is defective, it may release pressure continuously or not at all. To test the pressure relief valve, turn off the air compressor, remove the valve, and blow into it. If air comes out, the valve is defective and needs to be replaced.
7. Tank Issues: If the air compressor tank is damaged or corroded, it may leak air or fail to hold pressure. Check the tank for visible damage or leaks, and replace it if necessary.
8. Check for Electrical Issues: When your air compressor is not working, there may be an issue with the electrical components. Now check the power supply to ensure that the compressor is properly connected to the electrical outlet. Check the fuse or circuit breaker, and reset it if necessary. If the compressor still doesn’t work, inspect the power cord for any signs of damage or fraying. If you notice any damage, the cord may need to be replaced.
   
   In addition, check the on/off switch to make sure it is functioning properly.

Troubleshooting Air Compressor Issues

Air compressor troubleshooting can be a simple process if you identify the root cause of the issue.

Inspecting and Cleaning the Compressor

Before troubleshooting any compressor issues, it’s essential to inspect and clean the compressor. Start by inspecting the air filter, hoses, fittings, and valves for any signs of damage or leaks. Clean the air filter and replace any damaged or leaking components.

Replacing the Pressure Switch

If your compressor is failing to build pressure, the pressure switch may need to be replaced. Start by identifying the pressure switch on your compressor and removing it. Check the switch for any signs of damage, and replace it if necessary.

Adjusting the Belt Tension

If your compressor is making noise, the issue may be due to a loose belt. Start by turning off the compressor and unplugging it from the power source. Locate the belt and adjust the tension according to the manufacturer’s instructions.

Replacing the Thermal Overload Switch

If your compressor is overheating, the thermal overload switch may need to be replaced. Start by identifying the thermal overload switch on your compressor and removing it. Check the switch for any signs of damage and replace it if necessary.

Air Compressor Stopped Working? Watch This Video To See How To Fix It.

Most Common Asking Question About Air Compressor Troubleshooting

Why is my air compressor making a loud noise?

An air compressor may make a loud noise due to loose or worn parts, improper installation, or lack of maintenance.

Do all air compressors require regular oil changes?

No, not all air compressors require oil changes. However, it’s important to follow the manufacturer’s recommendations for maintenance to keep your compressor running smoothly.

What causes an air compressor to trip a breaker?

An air compressor may trip a breaker if the circuit is overloaded, the breaker is defective, or the air compressor motor is drawing too much current.

Why Is My Air Compressor Overloading?

If your air compressor is overloading, it is likely because it is not properly sized for your needs. When choosing an air compressor, you must consider the CFM (cubic feet per minute) output of the compressor and match it to the needs of your air tools.

If your air compressor cannot provide enough CFM to power your air tools, it will overwork itself and eventually overload.

why does my air compressor keep shutting off

1. Pressure Switch: Your air compressor has a pressure switch that turns the motor on and off as needed. If the pressure switch is not set correctly or is faulty, it can cause the air compressor to shut off prematurely. You can try adjusting the pressure switch or replacing it if necessary.
2. Low Oil: If your air compressor has an oil level sensor, low oil levels can cause it to shut off. Check the oil level and add more if needed.
3. Overheating: If your air compressor is overheating, it may shut off to prevent damage. Make sure that the air intake vents are not blocked and that the motor is properly lubricated.
4. Circuit Breaker: If your air compressor keeps tripping the circuit breaker, it may be drawing too much power. Check to make sure that the electrical circuit can handle the power requirements of your air compressor.
5. Faulty Motor: If the motor on your air compressor is faulty, it may shut off frequently. This can be caused by worn-out brushes, a faulty capacitor, or other issues. A professional can diagnose and repair the motor if needed.
6. Clogged Air Filter: A clogged air filter can cause the air compressor to work harder than it should, leading to overheating and premature shut off. Clean or replace the air filter as needed.

Why Is My Air Compressor Unresponsive?

If your air compressor is unresponsive, there are a few things you can check to troubleshoot the issue.

First, check the power supply to the air compressor. Make sure that the power cord is plugged in securely and that the outlet has power.

Next, check the air compressor’s pressure gauge. If the needle is in the red zone, the air compressor is over-pressurized and needs to be turned off immediately.

If the power supply and pressure gauge are both fine, then the issue may be with the air compressor’s motor. Try resetting the motor by unplugging the air compressor for 30 seconds and then plugging it back in.

Final Verdict

When your air compressor isn’t working, it can be frustrating and can disrupt your work. By following the tips outlined in this article, you can troubleshoot common issues and get your compressor up and running again. Remember to check the power supply, inspect the air filter, and check the oil level and pressure switch. If you’re not comfortable with DIY maintenance, you can always seek the help of a professional. With proper care and maintenance, your air compressor should last for years to come.