Chapter 14 Fault CodesMH300
ID No.
Display Fault Name Description
77
STO Loss 2
(STL2)
S2–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
STO2 and SCM2 short circuit
lines are not connected
Re-connect the short circuit lines
Hardware failure
After you make sure all the wiring is correct, if STL2 fault still exists after
cycling
the power, return to the factory for repair.
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