Allen-Bradley Error Code and Repair Guides - 32 Guides
Allen-Bradley industrial controls troubleshooting hub with 32 guides for fault codes, alarms, symptoms, parts checks, and repair decisions.
Use this page when your Allen-Bradley drive, CNC, servo, or controls hardware posts an alarm during production. Start with the exact code, then open the fix guide for overloads, encoder faults, communication alarms, power quality issues, and drive or board failures.
Tip: search the exact brand, model, and alarm together, for example "Allen-Bradley F0001" or "Allen-Bradley overcurrent fault".
Start With These Allen-Bradley Guides
Allen-Bradley FAQ
Where should I start with Allen-Bradley error codes?
Start with the exact Allen-Bradley model and displayed code or alarm, then open the closest guide on this page. Match the symptom, recent service history, and any secondary codes before resetting the equipment or ordering parts.
Do Allen-Bradley fault codes always mean a bad control board?
No. Many Allen-Bradley codes point to airflow, water flow, sensors, wiring, power quality, filters, switches, or operating conditions. Check the simple causes in the guide before replacing an expensive board.
When should I stop troubleshooting a Allen-Bradley fault myself?
Allen-Bradley industrial alarms can involve stored energy, moving machinery, high-voltage drives, servo systems, and production interlocks. Stop and use the repair checklist or compare service options when the guide points to line voltage, machine guarding, stored energy, safety circuits, or repeated faults after a reset.
| Error Code | What It Means | Guide |
|---|---|---|
| Allen-Bradley PowerFlex 40 Complete Fault Code Guide | Complete fault code guide for the Allen-Bradley PowerFlex 40 VFD, including common F-code trips, causes, and practical troubleshooting steps. | Fix → |
| Allen-Bradley PowerFlex 4M Fault Codes | PowerFlex 4M fault-code guide for F2, F4, F5, F7, F12, auxiliary input, undervoltage, overload, drive overtemp, and reset checks. | Fix → |
| Allen-Bradley PowerFlex 755 Fault Codes | PowerFlex 755 fault-code guide for F7 overload, F12 overvoltage, F25 ground faults, cooling kits, brake resistors, and motor insulation tests. | Fix → |
| Allen-Bradley PowerFlex F004 Fault | DC Bus Undervoltage | Fix → |
| Allen Bradley PowerFlex 525 F043 Fault Code | Phase VW Short | Fix → |
| Allen-Bradley MicroLogix 1400 Common Fault Codes | Allen-Bradley MicroLogix 1400 guide for major and minor faults, RSLogix 500 fault queues, LED indicators, LCD messages, and battery issues. | Fix → |
| Allen-Bradley PowerFlex 70 Fault Codes | F2, F5, F7, F13, and F111 | Fix → |
| Allen-Bradley CompactLogix 0x08 Watchdog Timeout Fault | Allen-Bradley CompactLogix 0x08 watchdog guide for task timeouts, infinite loops, AOI issues, periodic-task overloads, and recovery checks. | Fix → |
| Allen-Bradley CompactLogix Fault 0x04 | CompactLogix major fault 0x04 means the I/O configuration no longer matches the rack. Check missing modules, keying, backplane power, and wiring. | Fix → |
| Allen-Bradley PowerFlex 40 F3 Fault | Power Loss | Fix → |
| Allen-Bradley PowerFlex 40 F7 Motor Overload Fault | Allen-Bradley PowerFlex 40 F7 guide for motor overload trips, parameter 22, motor FLA, mechanical load, cooling, and nuisance resets. | Fix → |
| Allen-Bradley PowerFlex 755 Fault 7 | Motor Overload | Fix → |
| Allen-Bradley PowerFlex F002 Fault | Auxiliary Input Trip | Fix → |
| Allen-Bradley PowerFlex F012 Fault | Output Overcurrent | Fix → |
| Allen-Bradley PowerFlex F025 Fault | Drive Overtemperature | Fix → |
| Allen-Bradley PowerFlex F041 Motor Overload Fault | PowerFlex F041 guide for motor overload trips, including load checks, motor current, drive settings, cooling, and reset decisions. | Fix → |
| Allen-Bradley PowerFlex Fault F063 | Software Overcurrent | Fix → |
| Allen-Bradley PowerFlex Fault F111 | Motor Overspeed | Fix → |
| Allen-Bradley PowerFlex VFD Fault F7 | Motor Stalled Fix | Fix → |
| PowerFlex 753 F35 Heatsink Overtemp | PowerFlex 753 F35 guide for heatsink overtemperature, blocked filters, cooling fans, cabinet heat, drive load, and repeat thermal trips. | Fix → |
| Allen Bradley PowerFlex 40 F2 Fault | Ground Fault Trip | Fix → |
| Allen Bradley PowerFlex 40 F7 Fault | Motor Overload | Fix → |
| Allen Bradley PowerFlex 523 F7 Fault | Motor Overload | Fix → |
| Allen Bradley PowerFlex 525 F005 Fault | DC Bus Overvoltage | Fix → |
| Allen Bradley PowerFlex 525 F7 Fault | Motor Overload | Fix → |
| Allen Bradley PowerFlex 700 F7 Fault | Motor Overload | Fix → |
| Allen Bradley PowerFlex 753 F12 Fault | DC Bus Overvoltage | Fix → |
| Allen Bradley PowerFlex 753 F35 Fault | Heatsink Overtemperature | Fix → |
| Allen Bradley PowerFlex Fault Codes | Complete Reference | Fix → |
| PowerFlex 525 F7 Motor Overload Fault | Allen-Bradley PowerFlex 525 F7 guide for motor overload faults, P046 current settings, nameplate FLA, wiring, load, and nuisance trips. | Fix → |
| PowerFlex 753 F12 DC Bus Overvoltage | PowerFlex 753 F12 guide for DC bus overvoltage, short decel ramps, high-inertia loads, braking resistors, line voltage, and repeat trips. | Fix → |
| PowerFlex 755 F12 Hardware Overcurrent Fault | PowerFlex 755 F12 guide for hardware overcurrent trips, shorted output wiring, IGBT faults, motor leads, grounding, and drive replacement. | Fix → |