20
TROUBLE SHOOTING
Code Description Troubleshooting steps
E0
CPU error
The processor has detected an error. Press to clear. If the problem continues, call for
service.
E1
Improper configuration
The column has not been assigned a position, and is connected to a locked system. Press
to clear. To add the column to the system, first power down the column, and then unlock the
system. Power up the column, assign a position, then re-lock the system.
E2
Improper column pairing Unless a column is run by itself in single mode, it must be selected and moved with it’s pairing
column. Press to clear.
E3
Communication Error 1) Check for a powered down column. If one column has been powered down, the other
columns must be powered down to re-initialize the system.
2) Check if EStop Button is active on Remote Control. The Remote's EStop will disable
communication.
E4
Out of Level One or more columns in the system can not maintain level synchronization
1) Ensure that no columns are hung up on the safety locks
2) Check battery power
3) Check for overloading
Press to clear. Individually move each column back into a level position. Once all the
columns are level, they may be moved as a group.
E5
Emergency Stop To restore operation, clear the emergency stop button at the indicated column.
E6
Potentiometer Error An error has occurred with the string potentiometer, and synchronization can no longer be
guaranteed. Follow manual lowering procedures.
E7_
(E71, E72,
E73, E74)
Short circuit detected Short circuit detected in lift system. Please contact your service representative for assistance.
First instance of error can be cleared by pressing to clear. Second instance of error can
be cleared by pressing , but error message will show up at the start of each lift cycle and
until service representative has been able to troubleshoot and clear error. Third instance of
error the column will be inoperable until component has been replaced and Error message
reset.
For Service Representative only: See E7 DIAGNOSTIC TROUBLESHOOTING and replace
required component. To Reset Error message install an SD service card, and press .
E7 DIAGNOSTIC TROUBLESHOOTING
E71 – First contactor short: Replace first contactor (located between the disconnect and the
second contactor).
E72 – Second contactor short: Replace second contactor (located between the first contactor
and the motor).
E73 – (Board Relay Short): Replace control board.
E74 – (Board Overcurrent): An overcurrent has been detected on the lift actuators. To determine
the faulty component, clear the error and run the faulty column by itself Press the buttons below
in the exact order until the error is generated (control board replacement possibly required):
1) Up button (Error? Check/replace motor contactors and wiring)
2) Slow lower (Error? Check/replace small lowering valve and wiring)
3) Lower to Locks (Error? Check/replace large lowering valve and wiring)
4) Down Button (Error? Check/replace lock solenoid and wiring)
E8
Software mismatch Power down and disconnect the column from the system. Load the column with the newest
software code. To check the revision level of the software, insert a service card. Revision level
is indicated in the service menus as “r__”.
E9
Stuck Key A stuck keypad button or motion push button has been detected on startup, or a motion push
button has been held on for longer than 2-1/2 minutes.
E10
Display Communication Error Communication lost between display board and control board inside control cabinet. Check
cable connections.
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