F008Type 1 fault (auto-reset) · ThermalUsually repairable
PowerFlex 525 F008: Heatsink OvrTmp
What F008 means
The heatsink or power module inside the drive is too hot.
Symptoms
Trips after running a while, worse in summer or in a closed cabinet.
Is it repairable?
Yes: fan replacement and power-section repair are routine.
Common causes
- Blocked or dusty heatsink fins
- Failed cooling fan
- High cabinet temperature
- Drive overloaded for its size
Safe checks
- 1Check that the drive fan spins
- 2Clean the heatsink fins
- 3Measure the cabinet temperature
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
- F012HW OverCurrent
- F013Ground Fault
- F021Output Ph Loss
