2. “Ed02” DC BUS Error (Sheet 1 of 2)
CHM538S
DC BUS Error: the drive detects the DC BUS
voltage is too high.
Power down. Is
line voltage within
specification on the machine’s
terminal block?
Contact a qualified
electrician to correct
the problem.
No
No
Yes
Yes
Yes
Does the error
only happen at the start
of a spin cycle?
If problem persists, replace inverter control board.
Replace motor.
No
Move high leg or stinger leg
to the L3 terminal on the
machines terminal block.
For X-voltage, also remove
the 3rd or high leg from the
service connection and cap it.
If problem persists, contact a
qualified electrician to
correct the problem.
Does the incoming
voltage have a high
or stinger leg?
A
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