Compressor Decoder is an independent industrial compressor reference tool designed to help users interpret controller alarms and troubleshoot faults with greater clarity. Its current verified coverage focuses on Sullair STS compressors, with 46 diagnostic entries traced to identifiable original equipment manufacturer documentation. Rather than relying on generic alarm lists, the reference explains controller-specific fault wording, outlines probable causes, and provides a source trail to the relevant manual information.

The site also offers three Sullair STS field guides for situations where troubleshooting begins without a specific fault code. These cover the difference between warnings and faults, using event history to preserve useful diagnostic evidence, and performing safe first checks before replacing parts. Guidance distinguishes operator-safe observations from electrical, pressurized, or internal service work, helping users understand when trained service support is needed.

Compressor Decoder is not affiliated with Sullair or other manufacturers. It presents information as a troubleshooting aid, not a substitute for the machine-specific OEM manual or applicable site safety procedures.