About

Industrial Error Code Fixes exists for one reason: when your equipment throws a fault code at 2am and you need to know if it’s a filter or a cracked heat exchanger, you shouldn’t have to dig through a 300-page service manual.

Every guide on this site covers a real fault code on real equipment. Carrier, Fanuc, Mitsubishi, Hoshizaki, Navien, Trane, and 30+ other manufacturers. Each covers what the code means, the most likely causes in order of frequency, and a step-by-step diagnostic sequence. Parts tables list what you might need and where to get it.

These guides are built from OEM service literature, manufacturer fault code databases, and field experience. They’re written for technicians and experienced DIYers. We assume you know how to use a multimeter and aren’t afraid to pull a panel.

What we cover

• HVAC: furnaces, mini splits, commercial RTUs
• Commercial refrigeration: walk-in coolers, reach-in cases, ice machines
• CNC machines: Fanuc, Haas, Mazak, Siemens, Okuma
• VFDs and motor drives: ABB, Yaskawa, Allen-Bradley
• Boilers: gas and condensing, residential and commercial

If you need a part, the parts tables link to suppliers. If you need a tech, call one. Some of these repairs require a manometer, combustion analyzer, or licensed gas work. The guides tell you when that line is crossed.

Contact

For partnership inquiries, content corrections, or press: info@errorcodefixes.com