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Atlas Copco air compressors are a worldwide operating company, that provides a broad range of air compressor technology to users around the globe. One thing with Atlas Copco air compressors, like any compressor, they will require troubleshooting in order to diagnose & fix a problem.

This article will provide examples of troubleshooting tips, including the problems, possible causes, and solutions, for an Atlas Copco air compressor taken from an operator’s manual.

Table of Contents

Atlas Copco Air Compressor Troubleshooting

I have picked out this manual for an Atlas Copco air compressor which provides tips on various troubleshooting problems and their possible causes. Though these troubleshooting tips are specifically provided by Atlas Copco for one of their models of compressors, it is likely that you will be able to transfer this information and apply it to your Atlas Copco air compressor.

However, I recommend reviewing your specific Atlas Copco air compressor’s owner’s manual to find the troubleshooting guide provided by them.

We will take a look at the possible causes, and the correct action to take for the following symptoms with tables to follow:

  • Compressor doesn’t unload
  • Compressor pressure output too low
  • Safety valve blows after loading
  • Compressor stops or does not start

Atlas Copco Air Compressor Doesn’t Unload

Possible CausesCorrect Actions
Solenoid valve out of orderReplace the valve
The inlet valve doesn’t closeCheck the valve, replace the valve if necessary
Atlas Copco Air Compressor Doesn’t Unload Possible Causes and Correct Actions Table

Atlas Copco Air Compressor Pressure Output Too Low

Possible CausesCorrect Actions
Choked air filter element Replace filter element
Leak in control air tubesReplace leaking tubes
The Inlet valve doesn’t fully openCheck valve, replace if necessary
Malfunctioning solenoid valveReplace the valve
Atlas Copco Air Compressor Pressure Output Too Low Possible Causes and Correct Actions Table

Atlas Copco Air Compressor Safety Valve Blows After Loading

Possible CausesCorrect Actions
Inlet valve malfunctioningInspect the valve, replace if necessary
Faulty safety valveReplace
Oil separator element cloggedReplace the oil separator element
Atlas Copco Air Compressor Safety Valve Blows After Loading Possible Causes and Correct Actions Table

Atlas Copco Air Compressor Stops or Does Not Start

Possible CausesCorrect Actions
Faulty electrical power supply Do not use an extension cord, check the supply
Thermal overload has trippedThe motor will restart when motor windings cool down
Atlas Copco Air Compressor Stops or Does Not Start Possible Causes and Correct Actions Table

FAQs (Frequently Asked Questions)

What would cause an air compressor to not turn on?

It is possible that a fuse has been blown or that a breaker has been tripped if the air compressor is not turning on. It could also be that the compressor isn’t receiving sufficient power.

Additional Troubleshooting Pages

Atlas Copco Troubleshooting

Reader Questions & Responses

Atlas Copco XAS 375 JDC Shuts Down

Question

XAS 375 JDC – before it is warmed up enough to load it shuts down

Starting hard battery cranks starter for a while before it starts than before it is warmed up enough to load it shuts down.

Atlas Copco XAS-375 air compressor
Atlas Copco XAS-375 air compressor

Fluid levels are fine just had its 300-hour service.


If you have any Atlas Copco air compressor troubleshooting questions, please leave a comment below, with a photo if applicable, so that someone can help you!