Hitachi Inst. P-F fault code meaning

Series: HFC-VWS

Instantaneous power failure

AC drive

Meaning: A momentary power failure of 15 ms or more cuts off the output. With auto-restart selected, a long failure exhausts control power and the failure signal is released; operation resumes if a run command is present. | Check input disconnect device and input contactor (replace defective equipment). If power was turned off then on with POWER OFF still displayed, turn on again only after POWER OFF disappears (stays longer at light load).

Possible causes

Source: Hitachi HFC-VWS Instruction Manual P50