The Quincy QGS 15 Air Compressor is a sophisticated piece of machinery known for its exceptional performance and durability.


However, like any mechanical device, it may occasionally experience issues that require troubleshooting. This document aims to provide a comprehensive guide to diagnosing and rectifying common problems that may arise with your Quincy QGS 15.


Whether it’s a pressure imbalance, a motor issue, or a problem with the cooling system, we’ve got you covered.


With our Quincy air compressor guide, you’ll have your air compressor back up and running in no time. Remember, consistent maintenance and understanding your compressor’s operation are key to ensuring its longevity and optimal performance.


Quincy QGS 15 Troubleshooting


Quincy QGS 15 Troubleshooting:



If your Quincy QGS 15 air compressor is not starting, first check the power supply and ensure it is connected correctly.

If power isn’t the issue, check the pressure switch, which may fail to activate if there is residual pressure in the tank.

Another common issue is overheating, which can be caused by a blocked air intake, overly viscous oil, or a malfunctioning cooling system.

If your compressor is making unusual noises, this could indicate issues with the bearings or belts.

Regular maintenance and timely replacement of parts can help prevent most of these issues.


20 Common Quincy QGS 15 Air Compressor Problems And Solutions:


1. Overheating Issues:

Overheating is a common problem with the Quincy QGS 15 Air Compressor. This could be due to several reasons such as a blockage in the vents or a faulty cooling system.


The solution is to first identify the cause of overheating. If it’s a blockage, cleaning the vents can help. If it’s due to a faulty cooling system, you may need to replace the cooling system or seek professional help.


2. Pressure Problems:

If the compressor is not building up enough pressure, it may be due to air leakage, a worn-out valve or issues with the pump. To solve this, check for any leaks and fix them. If the valve is worn out, it will need to be replaced. A faulty pump may need professional attention or replacement.


3. Noise Issues:

Excessive noise can be due to improper lubrication, loose parts, or internal damage. Ensure that all the parts are properly tightened and lubricated. If the noise continues, it might be due to internal damage, for which professional help should be sought.


4. Motor Problems:

If the motor of your Quincy QGS 15 Air Compressor is not functioning properly, it could be due to a motor burnout or electrical issues. Check the power supply and ensure that the motor is not overloaded. If the problem persists, seek professional help.


5. Oil Leakage:

Oil leakage can be due to damaged seals, improper installation or a cracked sump. Replacing the seals, ensuring proper installation or replacing the damaged sump can solve this problem. If the problem persists, consult a professional.


6. Clog or Jam:

A clog or jam in the Quincy QGS 15 Air Compressor can be due to debris build-up or damage to internal components. Make sure to regularly inspect and clear out any blockages or debris that could cause a jam. If there are signs of damage, consult a professional.


7. Wear and Tear:

The Quincy QGS 15 Air Compressor is prone to wear and tear due to its constant use. To avoid this, make sure to regularly inspect the compressor for any signs of damage or weakened components. Replace any worn-out parts and ensure that all connections are secure.


8. Faulty Pressure Switch:

A faulty pressure switch can cause your compressor to shut off unexpectedly. To fix this, check the pressure switch for any signs of damage or wear and tear. If needed, replace the faulty components with a new one and secure all connections.


9. Leaky Cylinders:

Leaky cylinders are usually caused by damaged seals or gaskets. Check the seals and gaskets for wear and tear and replace any that are damaged. If you are unsure of what to do, consult a professional.


10. Stuck Valves:

Stuck valves can be caused by debris or corrosion buildup in the valves themselves. Make sure to inspect your compressor regularly for signs of damage or blockages. Clean any debris or corrosion to ensure a free-flowing valve. If the problem persists, replace any worn-out parts with new ones.


11. Burned Out Motors:

Burned out motors are usually caused by an overload of electrical current. Check your power source and make sure it is not providing too much current for your compressor’s motor. If the problem persists, you may need to replace the motor or seek professional help.


12. Leaky Hoses:

Leaky hoses can be caused by worn-out rubber seals or improper installation. Inspect your hoses and replace any seals that are damaged. Make sure all connections are secure and no air is leaking from them.


13. Vibrations:

Vibrations can be caused by loose parts or worn-out mounts. Ensure that all bolts and screws are tight, and replace any worn-out mounts with new ones. If the problem persists, consult a professional for further assistance.


14. Tripped Circuit Breakers:

If your circuit breaker trips often, it could be due to overloading or a faulty compressor. Make sure you are not running too many appliances at the same time and replace any worn-out parts that may be causing the problem. If needed, consult an electrician for further advice.


15. Inadequate Air Flow:

Inadequate air flow can be caused by blocked air filters or air hoses. Make sure to inspect the filters and hoses for any blockages and replace them if needed. If the problem persists, seek professional help.


16. Short Cycling:

Short cycling can be caused by overloading, low-pressure problems or faulty pressure switches. Check that your compressor is not being overloaded and that all components are working correctly. If the problem persists, consult a professional for further advice.


17. Leaky Piston Rings:

Leaky piston rings can be due to damaged seals or improper installation of the rings themselves. Check the seals and make sure they are secure. If needed, replace them with new ones and ensure that all connections are properly tightened.


18. Condensation Buildup:

Excessive condensation buildup can be due to a faulty cooling system or improper air flow. Make sure that the vents are open and not blocked, and replace any worn-out cooling components if needed. If the problem persists, consult a professional for further advice.


19. Blocked Intake Valve:

A blocked intake valve can cause low air pressure and inadequate air flow. Make sure to inspect your compressor’s intake valves for any signs of blockage or damage, and replace them if needed. If the problem persists, consult a professional for further assistance.


20. Damaged Valves:

Damaged valves can be caused by wear and tear or debris buildup in the valves. Make sure to regularly inspect your compressor for any signs of damage or blockages and replace any worn-out parts. If the problem persists, consult a professional for further advice.


In addition to these common problems, it is important to ensure regular maintenance of your Quincy QGS 15 Air Compressor in order to keep it running smoothly.


Always follow the manufacturer’s instructions when performing any maintenance and make sure that all parts are properly lubricated and tightened. If you run into any problems, seek professional help to ensure a safe and effective repair of your compressor.


Benefits Of Troubleshooting Quincy QGS 15 Air Compressor:

Troubleshooting your Quincy QGS 15 air compressor can have a multitude of benefits. Here are a few:


1. Cost Savings:

Regular troubleshooting can save costs in the long run as it helps identify minor issues before they escalate into major, costly repairs.


2. Extended Lifespan:

By identifying and fixing problems in a timely manner, you can extend the lifespan of your air compressor, ensuring you get the most out of your investment.


3. Improved Efficiency:

Troubleshooting can help improve the efficiency and performance of your air compressor. It ensures your machine runs at its optimal capacity, delivering the best results.


4. Safety:

Regular troubleshooting can also contribute to the safety of the workplace as it helps prevent accidents caused by malfunctions of the air compressor.


5. Ease of Maintenance:

With timely troubleshooting, maintaining your Quincy QGS 15 air compressor becomes much easier as you’re aware of what needs to be addressed and when.


Remember that troubleshooting is not just about fixing problems as they occur, but about preventive maintenance for a hassle-free operation of your Quincy QGS 15 air compressor.


Maintenance Tips For Your Quincy QGS 15 Air Compressor:

Here are some key maintenance tips to ensure the smooth operation of your Quincy QGS 15 air compressor:


1. Regular Inspection:

Regularly inspect your air compressor for any signs of wear and tear. This includes checking for leaks, ensuring all parts are in good working condition, and monitoring the compressor’s performance.


2. Clean Regularly:

Keep your air compressor clean. Excessive dirt and dust can lead to poor performance and may even cause damage. Ensure that the air intake vents are clean and clear of debris.


3. Change Air Filters:

Change your air filters regularly. Clogged or dirty air filters can reduce the efficiency of your air compressor and can lead to other problems.


4. Monitor Oil Levels:

Keep an eye on the oil levels in your air compressor. Low oil levels can cause overheating and result in damage to the compressor. Follow the manufacturer’s guidelines on when and how much oil to add.


5. Service Regularly:

Schedule regular servicing for your air compressor. This will ensure that any minor issues are identified and addressed before they can become major problems.


Remember, preventive maintenance is the key to the longevity and optimal performance of your Quincy QGS 15 air compressor.



How Do You Reset A Quincy QGS 15 Air Compressor?

Resetting your Quincy QGS 15 air compressor can be done in a few simple steps, ensuring your compressor is ready to operate as efficiently as possible:


1. Turn Off the Compressor:

First and foremost, switch off the air compressor. It’s important to ensure safety during the resetting process, and turning it off eliminates the risk of accidental start-ups.


2. Disconnect from Power Source:

Once the compressor is off, disconnect it from the power source. By doing this, you further ensure safety during the resetting process.


3. Wait for a Few Minutes:

After disconnecting the compressor from the power source, wait for a few minutes. This will allow any residual power within the unit to dissipate.


4. Reconnect to Power Source:

After waiting for a few minutes, reconnect your air compressor to the power source.


5. Turn On the Compressor:

Lastly, switch your Quincy QGS 15 air compressor back on. The compressor should now be reset and ready to operate.


Remember, if the compressor continues to experience issues after a reset, it might indicate a more serious problem. In such cases, it is recommended to consult a professional or refer to the troubleshooting section of your user manual.


How Do I Know If My Quincy QGS 15 Air Compressor Is Bad?

Knowing when your Quincy QGS 15 air compressor might be experiencing issues can save you from costly repairs and extended downtime.


Here are some common signs that may indicate a problem with your air compressor:


1. Strange Noises:

If your compressor starts making unusual noises, it could be a sign of internal damage or wear. This could be anything from knocking, rattling, hissing, or excessively loud operation.


2. Decreased Efficiency:

A decrease in the air compressor’s efficiency could be a sign of a problem. If your compressor is not delivering the same pressure as before, or if it’s taking longer to fill up, there could be an issue.


3. Excessive Moisture:

Air compressors naturally produce some moisture, but excessive moisture could be a sign of a malfunctioning aftercooler or a problem with the dryer.


4. Oil in Air Lines:

If you start to notice oil in your air lines, this could indicate a failing separator.


5. Constantly Running:

If your air compressor is constantly running and never reaches its cut-out pressure, this could suggest a problem with the pump or a leak in the system.


If you notice any of these signs, it is recommended that you refer to the troubleshooting section of your Quincy QGS 15 air compressor manual or consult a professional.


Remember, regular maintenance and timely troubleshooting can help prevent severe damage and extend the lifespan of your air compressor.


What Would Cause A Quincy QGS 15 Air Compressor To Not Build Pressure?

There could be several reasons why your Quincy QGS 15 air compressor is not building up pressure. Here are some of the most common causes:


1. Leaky Pipes:

If there are leaks in the air lines or fittings, they can prevent the air compressor from building up pressure. Regular inspection can help detect and address leaks promptly.


2. Open Safety Valve:

An open safety valve could be another cause. If the safety valve is stuck open, it will continuously vent air, thereby preventing pressure buildup.


3. Worn Out Seals:

Over time, seals in the compressor can wear out, leading to air leakage and thus preventing the buildup of pressure.


4. Damaged Check Valve:

A faulty check valve may allow air to flow back into the pump when it should be flowing into the tank, causing a decrease in pressure.


5. Poorly Performing Pump:

If the compressor pump is not functioning correctly, it may not be able to generate enough pressure.


If your Quincy QGS 15 air compressor is experiencing issues with building pressure, it is recommended to inspect these common problem areas.


If the problem persists after addressing these issues, consider consulting a professional or the troubleshooting section in your user manual.


Quincy QGS 15 Air Compressor Won’t Start:

When your Quincy QGS 15 air compressor refuses to start, it could be due to several reasons. Here are some of the most common causes and their potential solutions:


1. Power Supply Issues:

Check if the compressor is connected to a working power outlet. Try plugging in another device to ensure the outlet is functioning properly.


2. Circuit Breaker Tripped:

If your air compressor is connected to a circuit that’s overloaded, the circuit breaker might trip, preventing the compressor from starting. Reset the circuit breaker and try starting the compressor again.


3. Motor Overload:

The motor overload protector could have tripped due to overheating. If this is the case, let the motor cool down before attempting to restart.


4. Faulty Pressure Switch:

If the pressure switch is faulty or not set correctly, it might prevent the air compressor from starting. You might need to adjust or replace the pressure switch.


5. Damaged Starter or Capacitor:

A damaged starter or capacitor could also prevent your air compressor from starting.


These components might need replacement. If your Quincy QGS 15 air compressor still doesn’t start after troubleshooting these common issues, it is recommended to consult a professional or refer to the troubleshooting section of your user manual.


Remember, regular maintenance can prevent many common issues and ensure your air compressor runs smoothly.


Quincy QGS 15 Air Compressor Not Building Pressure:

If your Quincy QGS 15 air compressor is failing to build pressure, there could be several causes. Here are some common issues to investigate:


1. Air Leaks:

Check for any signs of air leaks in the compressor system, such as hissing sounds or visible signs of air escaping. Leaks could be present in multiple areas, including the hoses, connections, and the tank itself.


2. Malfunctioning Pressure Switch:

A faulty pressure switch might not signal the motor to stop once the tank has reached the desired pressure, leading to the motor continuously running and not building pressure.


3. Damaged Seals or Gaskets:

Worn-out or damaged seals and gaskets can result in air escaping the system, thus reducing the pressure build-up. Inspect these components for any signs of wear and tear and replace if necessary.


4. Faulty Compressor Valves:

If the intake or exhaust valves in your compressor are broken or malfunctioning, they could be preventing the compressor from pressurizing the air effectively.


5. Clogged Air Filter:

An air filter that’s clogged with dust or debris might restrict the amount of air reaching the compressor, leading to a drop in pressure.


If you’ve inspected these areas and your Quincy QGS 15 air compressor is still not building pressure, it’s recommended to seek professional help or refer to the troubleshooting section of your user manual.


Regular maintenance is key to keeping your air compressor functioning optimally and can help to preemptively identify and rectify issues.


Quincy QGS 15 Air Compressor Reset Button:

The reset button on your Quincy QGS 15 air compressor is a crucial component that safeguards the motor from overheating or overloading.


If you’re having trouble with the reset button, below are a few potential issues you might encounter and steps to rectify them:


1. Reset Button Doesn’t Pop Out:

If the reset button doesn’t pop out when the motor is overheating, it might be faulty. Consider replacing the reset button or consulting a professional.


2. Frequent Need to Reset:

If you’re constantly needing to press the reset button, it could indicate a problem with the motor overheating. Ensure the motor is not overloaded and that there’s sufficient ventilation.


3. Reset Button is Stuck:

If the reset button is stuck and won’t press down, it might be jammed or broken. Avoid using force to push the button; instead, seek professional assistance.


4. Unresponsive Reset Button:

If pressing the reset button doesn’t start the compressor, there might be a problem with the button’s wiring or connection. A thorough inspection by a professional is recommended.


If your Quincy QGS 15 air compressor continues to have issues with the reset button after troubleshooting these potential problems, consider seeking professional help or referring to the troubleshooting section of your user manual.


Remember, regular maintenance can help prevent such issues and ensure your air compressor operates smoothly.


Quincy QGS 15 Air Compressor Won’t Turn On:

If your Quincy QGS 15 air compressor won’t turn on, there could be several underlying causes. Here are some common issues and their potential solutions:


1. Power Supply Issues:

Ensure the compressor is plugged into a functioning power outlet. Check the power cord and plug for any signs of damage or wear.


2. Faulty On/Off Switch:

If the on/off switch is broken or malfunctioning, the air compressor might not turn on. Inspect the switch for any signs of damage. A replacement might be needed.


3. Motor Issues:

The compressor’s motor could be faulty or burnt out. If the motor smells like it’s burning or you notice excessive noise or vibration, it might need to be replaced.


4. Start Capacitor Problems:

The start capacitor boosts the motor at startup. If it’s faulty, the compressor may not turn on. It might need replacement.


5. Pressure Switch Issues:

If the pressure switch isn’t set correctly or is faulty, it might prevent the air compressor from turning on. Adjust or replace as necessary.


If your Quincy QGS 15 air compressor still doesn’t turn on after troubleshooting these common problems, it is advised to consult a professional or refer to the troubleshooting section in your user manual.


Regular maintenance can help prevent such issues and ensure your air compressor operates efficiently.


Quincy QGS 15 Air Compressor Check Valve Problem:

If your Quincy QGS 15 air compressor is experiencing problems with the check valve, there could be several reasons behind this. Here are some common issues and suggested solutions:


1. Check Valve Leak:

If you notice air leaking from the compressor when it’s off, this might indicate a problem with the check valve. It could be faulty and might need replacement.


2. Slow Build-up of Pressure:

A malfunctioning check valve can affect the air pressure build-up in the compressor. If you’re experiencing this issue, inspect the check valve for any signs of damage.


3. Compressor Doesn’t Shut Off:

If the compressor doesn’t shut off when the tank is filled, the check valve might be at fault. It may not be closing properly due to debris or damage and needs to be cleaned or replaced.


4. Excessive Noise:

A dysfunctional check valve can cause the compressor to make more noise than usual. If you notice this, inspect and replace the valve if necessary.


If your Quincy QGS 15 air compressor continues to experience check valve problems after troubleshooting these potential issues, consider consulting a professional or referring to the troubleshooting section of your user manual.


As always, regular maintenance can prevent such issues and ensure that your air compressor operates optimally.


Quincy QGS 15 Air Compressor Cleaning Tips:

Cleaning your Quincy QGS 15 air compressor on a regular basis is vital to maintain its performance and longevity. Here are some tips to help you with this process:


1. External Cleaning:

Use a clean, dry cloth to wipe down the exterior of your air compressor. Avoid any solvents or harsh chemicals that might damage the finish.


2. Air Filter Cleaning:

Depending on the usage, clean or replace the air filter every 6 months. If it’s clogged or dirty, it can reduce the efficiency of your compressor.


3. Drain the Tank:

Moisture can accumulate in the tank over time, which can cause rust or corrosion. Drain the tank regularly to remove this moisture.


4. Cleaning the Check Valve:

The check valve should be cleaned regularly to ensure no debris is affecting its functionality. Use an approved cleaning solution recommended in the user manual.


5. Regular Oil Changes:

For oil-lubricated models, changing the oil regularly can extend the life of your compressor. Refer to the user manual for the recommended oil change schedule.


Remember, regular cleaning and maintenance can significantly extend the lifespan of your Quincy QGS 15 air compressor and ensure it continues to function optimally.


Quincy QGS 15 Air Compressor Lubrication Tips:

Lubricating your Quincy QGS 15 air compressor correctly is crucial for its performance and durability. Here are some effective lubrication tips:


1. Choose the Right Oil:

Always use the oil recommended by Quincy. Using the wrong type could lead to poor performance and damage to your air compressor.


2. Regularly Check Oil Levels:

Checking the oil level regularly is crucial to ensure the compressor is properly lubricated. The oil level should ideally be at the midpoint of the sight glass.


3. Change Oil Promptly:

Refer to your user manual for the recommended oil change frequency. Regular oil changes can prevent contaminants from damaging the internal components of your compressor.


4. Avoid Overfilling:

Overfilling the oil can lead to leaks and may cause damage to the compressor. Always stick to the recommended oil levels.


5. Clean the Oil Filter:

Regularly cleaning or replacing the oil filter can help maintain the efficiency and longevity of the compressor.



Remember, lubrication is an essential aspect of regular maintenance that helps your Quincy QGS 15 air compressor operate smoothly and efficiently.


Storing Your Quincy QGS 15 Air Compressor:

Storing your Quincy QGS 15 air compressor properly is essential to ensure its longevity and effectiveness. Here are some tips to help you store it correctly:


1. Clean Before Storage:

Before storing your air compressor, clean it thoroughly to remove any dust, oil or debris. Always ensure it is dry before storage to prevent corrosion.


2. Store in a Cool, Dry Place:

The air compressor should be stored in a cool and dry place to avoid damage due to moisture, heat or freezing temperatures.


3. Cover the Air Compressor:

Use a cover to prevent dust accumulation. Make sure the cover is breathable to prevent condensation build-up.


4. Disconnect all Attachments:

Any hoses, tools or other attachments should be disconnected and stored separately.


5. Empty the Tank:

Drain all water from the tank before storing. This prevents corrosion caused by stagnant water.


6. Regularly Check the Compressor:

Even in storage, check the compressor regularly for any signs of damage, corrosion or leaks.


Remember, appropriate storage can significantly prolong the life of your Quincy QGS 15 air compressor and ensure optimal performance when it’s back in use.