Smart Display Error Codes

If you are receiving an error code on your Pack Mule Smart Display, you can use the drop-down menus below to select the matching code for diagnostics information and recommended solutions.

Controller Diagnostic LED Codes

For visual diagnosis of system faults, a green LED is provided on the body of the controller. It flashes a different number of times, in a repeated pattern, when there is a fault. The number of flashes indicates the type of fault.

sevcon-controller

Sevcon Controller

Sevcon Controller Diagnostic Codes

Diagnostic Codes

1.  A Light Emitting Diode (LED) is used to indicate controller status.
2.  When operating normally, the LED will be ON continuously.
3.  If the controller is faulty, the LED will be OFF.
4.  If there is a vehicle fault the LED will flash.
5.  The information given by the flashing is as follows (below):

The Sevcon controller is identified by its blue case

3 FLASHES

REASON 1
Low resistance or short circuit between M1 and B- producing a low voltage across the Mosfets.

CHECK
Mosfet s/c, motor s/c to B-, power wiring.

REASON 2
Contactor coil short circuit.

CHECK
Coil s/c, coil wiring.

4 FLASHES

REASON
Contactor welded or wiring fault giving a high voltage between M1 and B- before closing the
contactor.

CHECK
Welded contactor tips, power wiring.

5 FLASHES

REASON
No high voltage (approximately equal to battery voltage) between M1 and B- after closing the contactor.

CHECK
Coil wiring, power wiring, motor o/c.

6 FLASHES

REASON
Accelerator input high at start up.

CHECK
Accelerator wiring. Accelerator set towards maximum.

7 FLASHES

REASON
Incorrect battery voltage - less than 13V or higher than 45V.

CHECK
Correct battery voltage, loose connections, discharged battery.

8 FLASHES

REASON
Controller has overheated. Allow controller to cool.

CHECK
Heatsinking, mounting.

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