VFD68 Variable Frequency Drives
58
Troubleshooting
When an improper operating condition occurs in the VFD, the operation panel display changes to one of the
status indications shown in Table 37. If the fault does not correspond to any of the faults in Table 37 on page 59
(or if you have any other problem), contact PENN by Johnson Controls Application Engineering at
1-414-524-5535 or 1-800-275-5676.
Table 36 defines the indication categories. Table 37 provides descriptions of the individual indicator messages.
When a fault occurs, take the appropriate corrective action, then reset the VFD and resume operation. See
on page 69. Failure to take corrective action and reset the VFD may lead to a
repeat of the fault condition and damage the VFD. For further information on troubleshooting, see
.
Table 36: Indication Categories on the Operation Panel Display
Indication
Category
Description
Error message
A message regarding operational or setting errors displays. The VFD continues operating.
Warning
The VFD continues operating. Failure to take appropriate measures will lead to a fault.
Alarm
The VFD continues operating. You can also output an alarm signal by adjusting a parameter
setting.
Fault
When a fault occurs, the VFD output reduces to 0 Hz, the motor stops, and the VFD outputs a
fault signal.
