Taylor-Dunn B0-T48-48 Taylor Truck T48 Operation Manual page 128

Electrical Troubleshooting
Status LED Code Table
The status LED on the Sevcon power unit logic card can be used to give you an idea of where
the problem may be. It is recommended that you complete the troubleshooting procedure to
confirm failure of any component.
Number
of Fault Description
Flashes
1
2
3
4
5
Accelerator module
6
7 Discharged battery
8
9
12
Personality fault
Startup switches not
Sequence fault operated in the correct
MOSFET or motor
short
Contactor fault or
open motor
Not used
FS-1 Micro Switch Failure
fault
Accelerator Failure
Discharged battery or
Controller
overheated
ISO coil shorted ISO Coil Short Circuit
Fault in the Wiring to the
dash display or a faulty
Can Buss Fault
NOTE: The Dash Display is
Section 4
Possible Cause
See dealer
order
Burned Motor
Contactor Failure Check contactor and
Open Circuit
-
Faulty Wiring
loose connections
Wait for controller to
Overloaded truck
Check coil continuity
Dash Display
Optional pin connector on the
LED Status Light
Page 26
Actions
-
Reset the switches
and start over (See
Section 2)
Repair as required
motor
-
Check accelerator
module inputs
Check battery and
connections to
controller
cool
and replace as
required
Check wiring. If
vehicle is not
equipped with a
dash display, check
for debris in the 6-
logic card