Forward Lift MCH13 Guía De Instalación, Operación Y Mantenimiento página 21

Code Description
E0 CPU error
E1 Improper configuration
E2 Improper column pairing Unless a column is run by itself in single mode, it must be selected and moved with it's pairing
E3 Communication Error
E4 Out of Level
E5 Emergency Stop
E6 Potentiometer Error
E7 Short circuit detected
E8 Software mismatch
TROUBLE SHOOTING
Troubleshooting steps
The processor has detected an error. Press "x" to clear. If the problem continues, call for
service.
The column has not been assigned a position, and is connected to a locked system. Press
"x" 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.
column. Press "x" to clear.
1) Check for a loosened or unhooked communication cable. Reattach the cable and press "x"
to clear.
2) 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.
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 "x" to clear. Individually move each column back into a level position. Once all the
columns are level, they may be moved as a group.
To restore operation, clear the emergency stop button at the indicated column.
An error has occurred with the string potentiometer, and synchronization can no longer be
guaranteed. Follow manual lowering procedures.
Short circuit detected in lift system. Please contact your service representative for assistance.
First instance of error can be cleared by pressing "X" to clear. Second instance of error can be
cleared by pressing "X" , 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 "X".
E7 DIAGNOSTIC TROUBLESHOOTING
E71 – First contactor short: Check motor wiring to ensure there no loose connections. Replace first
contactor (located between the disconnect and the second contactor).
E72 – Second contactor short: Check motor wiring to ensure there no loose connections. Replace
second contactor (located between the first contactor and the motor).
E73 – (Board Relay Short): Replace control board.
E74 – (Board Over current): An over current 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)
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__".
21