❄ Compressor Code Lookup

Guides

Troubleshooting, maintenance, and buying guidance for the people who keep industrial air compressors running.

Start with the symptom

These guides are organized around what the machine is doing, not around the brand on the nameplate. If the controller is showing a specific code or message, start with the code lookup instead: each brand page lists every documented code with its meaning, the likely causes, and the checks you can safely make yourself. If there is no code, or the display only says something general like "high temperature" or "shutdown," pick the guide that matches the symptom:

One rule applies to every guide here: one reset is diagnosis, repeated resets are damage. If the same fault comes back after a single reset, the condition behind it is real. Before you reset again, write down the exact code or message, the pressure and temperature readings on the display, and how long the machine ran before it tripped. That record is what separates a quick fix from an expensive service call, and it is the first thing a technician will ask for.

Anything inside the electrical cabinet, anything still under pressure, and anything involving the drive or the airend belongs to a qualified technician. The guides say so wherever it applies.

Why does my rotary screw compressor keep tripping on high temperature?
The most common compressor shutdown there is — and the checklist that fixes most of them without a service call.
Why is my air compressor running but not building pressure?
Motor's running, gauge isn't moving. The short list of real causes and how to narrow it down fast.
What maintenance does a rotary screw compressor actually need?
Every service item on the controller's reminder list maps to a specific fault code you'll see later if you skip it.
How do you read the fault codes on your air compressor's controller?
Six brands, each with its own controller language. Identify yours and go straight to the right code list.
Why does my air compressor keep shutting down?
Repeated shutdowns are the machine protecting itself from one of five things. Identify which before the next reset.
Why is there water in my compressed air lines?
Every compressor makes water — gallons of it in humid weather. The question is why yours is reaching the tools.
What size air compressor does my shop need?
It's CFM, not horsepower — and both oversizing and undersizing cost you real money every month.
Equipment still down? If you're in Middle Tennessee or Central Alabama, see who services industrial air compressors near you:
Nashville, TN →  ·  Birmingham, AL →