Upright TM 12 Series User Manual

LED Fault Codes Section 4 - Troubleshooting
Pa
g
e 4-6 505115-000
4-6 LED F
AULT
C
ODES
Batteries must be fully charged before troubleshooting.
Check/Repair all connections before replacing any components
Figure 4-4: Motor Controller
NOTE: Before dip switch settings will take effect, power must be disconnected or Emergency Stop switches must be
depressed.
Table 4-1:
LED Fault Codes
M2 Terminal
LED Indicator
B– Terminal
B+ Terminal
Flash Code Meaning Status Corrective Action
LED on
Power to the controller and the
controller is operational.
System is functional None.
LED off
No power to the controller, or
internal fault in the controller.
Battery cables not connected
properly; Failed controller
Check battery cable connections.
Replace the controller.
2 Flash Procedural fault.
Lift, drive, or steer switch is
engaged at start-up; Drive/Lift
switch rotated while operating
Cycle the Control Handle through neutral to clear fault.
3 Flash
Controller senses B– at the M2
terminal.
Short circuit at the motor; M2
cable in contact with B– cable;
Short circuit within controller
Check cable routing and connections.
Test terminals for source of B– .
Replace the controller
4 Flash
Controller senses B+ at the M2
terminal before engaging the
Motor Start relay.
B+ cable routed incorrectly; M2
cable making contact with B+
cable; Motor Start relay contacts
welded closed.
Check cable routing and connections.
Test terminals for source of B+.
Replace the Motor Start relay.
5 Flash
Controller senses open circuit at
M2 after engaging the Motor Start
terminal.
Cables loose or not connected;
Faulty Motor Start relay
Check the cable routing and connections.
Check the signal from Motor Controller to relay.
Check/replace the Motor Start relay.
6 Flash
Faulty signal from Control Handle
or I/O board.
Faulty Control Handle; Wiring
error
If Platform Controls are affected, check/replace the Control Handle.
If Chassis Controls are affected, check/replace the I/O board.
7 Flash
Battery voltage below 12V or
above 45V.
Dead batteries; Bad cable
connections
Check batteries and cable connections.
8 Flash Thermal cut-off.
Controller is overheated due to
overuse or other failure
Allow system to cool.
Locate and repair other source of overheat.

Upright TM 12 Series Specifications

General

Brand	Upright
Model	TM 12 Series
Category	Lifting Systems
Language	English