: Once the hardware circuit is closed (restoring the signal to H1 and H2), the "Hbb" code should clear from the display. If it persists, a power cycle may be required to clear the latch.
Locate parameter (Previous Fault) to see the most recent error code. YASKAWA V1000 FAULTS yaskawa error code h66
A common point of confusion is that H66 appears even when the motor is running. If the cable is partially damaged, the motor might physically spin, but the drive sees "noise" or "no signal" and trips, leaving the motor coasting to a stop. Operators often claim, "The motor was running fine, then it just quit!" This confirms the issue is likely signal degradation, not a total mechanical seizure. : Once the hardware circuit is closed (restoring
Worn, pinched, or frayed cables connecting the control board to external modules often cause intermittent H66 errors. YASKAWA V1000 FAULTS A common point of confusion