66 ACH550 Installation, Operation and Maintenance Manual
ACH550 E-Clipse Bypass
Note: In the Parameter Edit mode the current parameter value appears below the
parameter name.
Note: To view the default parameter value, press the Up/Down arrows
simultaneously. Press Enter to restore the default parameter value or press ESC to
leave the Parameter Edit mode.
Diagnostics
Fault listing
9 Press ESC to return to the Default
Display from the Main Menu.
Fault
Code
Fault Name In
Panel
Fault Possible Cause Corrective Action
3001 COIL CURR FBK RBCU is sensing
abnormal current
feedback when neither
contactor should be
energized
Defective component
on RBCU
Change RBCU
3002 BYP CNTACT
STUCK
M2 contactor indicates
it is not prepared to
move on a power up
check of the contactor
or after contact is
commanded to open
Defective Contactor
Defective RBCU
Disconnect incoming
power from unit
Check if contactor
armature moves freely.
If armature moves
freely, then change the
RBCU. If armature
does not move freely,
then change individual
contactor (M2) or the
complete assembly
(RCSA-0x)
3003 DRV CNTACT
STUCK
M1 contactor indicates
it is not prepared to
move on a power up
check of the contactor
or after contact is
commanded to open
Defective Contactor
Defective RBCU
Disconnect incoming
power from unit
Check if contactor
armature moves freely.
If armature moves
freely, then change the
RBCU. If armature
does not move freely,
then change individual
contactor (M1) or the
complete assembly
(RCSA-0x)
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