$7.99
About
Fault Finder Pro is a fast, no-nonsense troubleshooting reference built by an industrial electrician for industrial electricians and maintenance technicians.
Stop wasting time digging through manuals on the job site. Everything you need is right here — offline, organized, and ready when you are.
STEP-BY-STEP FAULT DIAGNOSIS
Walk through guided fault trees for the most common industrial electrical problems. Answer yes/no questions and get a recommended action fast.
- Motor won't start
- Breaker keeps tripping
- VFD faults
- 3-phase power issues
- Transformer faults
- Generator and transfer switch faults
- Servo and motion control faults
- Panel and distribution faults
- Allen-Bradley PLC faults — MicroLogix, CompactLogix, and ControlLogix (communication, I/O, and program faults)
FAULT CODE LOOKUP
Searchable database of fault codes with cause and fix for every code.
- Allen-Bradley PowerFlex VFDs
- Fanuc CNC alarms
- Fanuc Robot alarms (SRVO, SYST, MOTN, MEMO, COLL, and more)
- Siemens SINAMICS drives
- Yaskawa drives
ELECTRICAL REFERENCE
- NEC wire sizing table — AWG 14 through 500kcmil
- 3-phase voltage drop calculator
- Conduit fill reference
- 3-phase formulas
TOOLS
- Ohm's Law calculator — enter any 2 values, solve for the rest
- Motor nameplate decoder — enter HP, voltage, and FLA to calculate overload relay, breaker size, fuse size,
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What's New in Fault Finder Pro
1.1.0
August 3, 2026
What's new in 1.1.0 • Reorder your tabs — press and hold a category on Reference, Tools, or NFPA 70E and drag your most-used sections to the front. Your order is saved. • Save fault codes — tap the star to pin codes, and filter to your saved list. • More drives — added fault codes for ABB (ACS), Schneider Electric Altivar, Danfoss VLT, and Mitsubishi FR. • Rate the app — a quick prompt after you've used the troubleshooter a few times. • Fixes & polish — corrected a Panel/Distribution diagnostic path, the safety disclaimer now appears only on first launch, and cleaned up tab labels and buttons.
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