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Error Code
Description and Corrective Action
Output Transistor Fault
Short circuit, excessive load, excessive cable charging current
Verify correct load (motor HP, motor wiring, cable length, cable type).
Motor Short to Ground
Motor Thermal OL
Check actual motor current against FLA (P108).
Flying Restart Fault
Failed motor speed sync attempt
Single Phase Fault
Incoming AC line phase loss
Check supply power.
Start Fault
Start command was present on power-up
Cycle start command.
179 diagnostics running display options
Error Code
Description and Corrective Action
Fault History
(n.xxx)
N = 1–8
xxx = Fault code
Software Version
Drive ID
Internal Code (x.yz)
DC Bus Voltage
(divided by 1.414 = approximate line input voltage)
RMS Equivalent Motor Voltage at Drive Output Terminals
Motor Load
(% of drive output rating)
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