YASKAWA HV600 Technical Reference page 495

Code Name
Uv3 Soft Charge Answerback Fault
Note:
• Do a Fault Reset to clear the fault.
• Fault trace is not available for this fault.
Code Name
VLTS Thermostat Fault
Note:
• Do a Fault Reset to clear the fault.
• Parameter L5-53 [Thermostat Fault Retry Selection] sets the Auto Restart function of this fault.
YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
Causes
The relay or contactor on the soft-charge bypass relay
is damaged.
Causes
The digital input from the terminal set for Thermostat
Fault [H1-xx = 88] is active.
Possible Solutions
• Re-energize the drive.
• If the fault stays, replace the control board or the drive.
• Check monitor U4-06 [PreChargeRelayMainte], which shows
the performance life of the soft-charge bypass relay. If U4-06 is
more than 90%, replace the board or the drive. For information
about replacing the board, contact Yaskawa or your nearest sales
representative.
Possible Solutions
Examine the wiring or wait for the motor to cool.
6.5 Faults
6
495