Delta VFD2A8MS21ANSAA

Chapter 14 Fault CodesMS300
598
ID
Display on LCD Keypad
Fault Name
Fault Descriptions
72
S1 internal loop
detection error
(STL1)
S1–DCM internal loop detection error
Action and Reset
Action Condition
Hardware detection
Action Time
Immediately act
Fault Treatment Parameter
N/A
Reset Method
Hardware failure, and cannot reset. Cycle the power.
Reset Condition
N/A
Record
Yes
Cause
Corrective Actions
S1 and DCM short circuit lines are
not connected
Re-connect the short circuit line
Hardware failure
After you make sure all the wiring is correct, if STL1 fault still exists after cycling
the power, return to the factory for repair.