F122Type 2 fault (manual reset) · Control moduleUsually repairable
PowerFlex 525 F122: I/O Board Fail
What F122 means
A failure was detected in the control and I/O section of the drive.
Symptoms
Fault on power-up or when inputs change; I/O may not respond.
Is it repairable?
Yes: I/O circuits on the control module are repairable.
Common causes
- Damaged I/O circuit (often from wiring mistakes or surges)
- Control module hardware failure
Safe checks
- 1Check control wiring for wrong voltages on the terminals
- 2Cycle power. If it returns, the control module or drive needs repair
Drives hold dangerous voltage after power-off. Checks should only be done by qualified personnel, with power isolated and the DC link discharged.
Reviewed by AutomIQ repair technicians. Code and name from the PowerFlex 520-Series Adjustable Frequency AC Drive User Manual.
Related PowerFlex 525 faults
- F004UnderVoltage
- F005OverVoltage
- F007Motor Overload
- F008Heatsink OvrTmp
- F012HW OverCurrent
- F013Ground Fault