Status Led Code Table - Taylor-Dunn B0-254-48 Operation, T Roubleshooting And Replacement Parts Manual

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.
N u m b e r
o f Fault Description
F l a s h e s
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
Electrical Troubleshooting
Possible Cause
See dealer
and start over (Refer
to Vehicle Operating
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
Actions
-
Reset the switches
Instuctions))
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
Sevcon Troubleshooting
Page 19