Drives (VFDs)
Allen-Bradley PowerFlex 525 VFD fault codes
What all 16 Allen-Bradley PowerFlex 525 VFD fault codes mean, in plain words, with a risk grade for each. These come from the manufacturer's own manual. The fix for each one is in WERCS Diagnose.
Get the fixes · plans from $49/moUpdated July 22, 2026
| Code | What it means | Risk |
|---|---|---|
| F002 | F002 Auxiliary Input An external auxiliary input signaled a trip, causing the drive to stop the equipment. | YELLOW |
| F003 | F003 Power Loss The drive lost an incoming supply phase while under load, causing the motor to stop. | YELLOW |
| F004 | F004 UnderVoltage The drive stopped because its internal voltage dropped below the minimum required level. | YELLOW |
| F005 | F005 OverVoltage The drive stopped because its internal voltage exceeded the maximum safe limit. | YELLOW |
| F006 | F006 Motor Stalled The drive stopped the motor because it could not accelerate or decelerate due to excessive current. | YELLOW |
| F007 | F007 Motor Overload The drive tripped and stopped the motor because an excessive load triggered the internal electronic overload. | YELLOW |
| F008 | F008 Heatsink OvrTmp The drive stopped because its internal heatsink temperature exceeded the maximum safe limit. | YELLOW |
| F012 | F012 HW OverCurrent The drive shut down because its output current exceeded the internal hardware limit. | YELLOW |
| F013 | F013 Ground Fault The drive stopped the motor because it detected a current path to earth ground at the output terminals. | YELLOW |
| F021 | F021 Output Ph Loss The drive stopped because one of the three output power phases to the motor is missing. | YELLOW |
| F029 | F029 Analog In Loss The drive stopped because a required analog input signal was lost during operation. | YELLOW |
| F038 | F038 Phase U to Gnd The drive shut down because it detected a phase to ground fault on the U phase going to the motor. | YELLOW |
| F041 | F041 Phase UV Short The drive stopped because it detected a short circuit between the U and V output terminals. | YELLOW |
| F059 | F059 Safety Open The drive disabled motor power because the safe torque off safety circuit opened. | YELLOW |
| F070 | F070 Power Unit The drive stopped operating because it detected a failure in its internal power section. | YELLOW |
| F081 | F081 DSI Comm Loss The drive stopped because communication with the master control device was interrupted. | YELLOW |
Every code comes from the manufacturer's own manual. Subscribers see which manual and page.