Page 147
Speed Level Seres - Servce & Parts Manual
January 2019
Secton 9 - Troubleshootng - 3084ES Models
Sensor Messages CE Models
The following are “sensor” HELP messages – problems have been detected which are likely due to
sensor issues (CE models).
FAULT: CHECK HEIGHT1 SENSOR _________________________ Flash Code: 6/1
FAULT: CHECK HEIGHT2 SENSOR _________________________ Flash Code: 6/1
A height sensor is giving an out-of-range voltage (below 0.5V or above 4.5V).
FAULT: CHECK HEIGHT SENSORS_________________________ Flash Code: 6/1
When two height sensors are fitted, both should read the same height at all times; this message
indicates that the sensors are reading different heights. Check for loose sensors and/or re-
calibrate.
FAULT: CHECK PRESSURE SENSOR _______________________ Flash Code: 6/2
A pressure sensor is giving an out-of-range voltage (below 0.5V or above 4.5V).
FAULT: CHECK ELEVATION SWITCH _______________________ Flash Code: 6/3
The elevation switch is in disagreement with the height sensor(s).
During calibration, the height at which the elevation switch opens (while lifting) and closes
(while lowering), is recorded. Subsequently, height and these calibration points are continuously
checked – any significant difference generates this error.
This section lists “CANBUS” HELP messages – problems have been detected with CANBUS
communications between different modules (of course, only applicable if more than one module
is connected together via CANBUS):
FAULT: CANBUS! _______________________________________ Flash Code: 6/6
There are problems with CANBUS communications between the different modules; messages
expected from one or more module are not being received, or messages intended to one or
more module cannot be transmitted.
Check for open- and short- circuit problems with CANBUS wiring; ensure that the CANBUS
is wired correctly pin-to-pin; ensure that the vehicle chassis is not erroneously shorted to the
chassis (for example, due to insulator breakdown in the motor).
Power Wiring Messages
The following are “power wiring” HELP messages – problems have been detected which are likely
due to power wiring errors:
FAULT: CAPBANK VOLTAGE TOO LOW - CHECK STUD WIRING! Flash Code: 7/7
The voltage on the B+ stud of the controller (connected to an internal voltage stabilization
capacitor bank) is too low when the line contactor is off (a pre-charge circuit in the module
normally applies approximately 32 volts to the capacitor bank).
Check the 300 amp fuse, line contactor or power wiring for errors. Also check DC motor for
internal grounding.
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