Noblelift RT16P, Service Maintenance Manual

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11.
DIAGNOSTICS AND TROUBLESHOOTING
These controllers detect a wide variety of faults or error conditions. Faults can be detected by the operating
system or by the VCL code. This section describes the faults detected by the operating system. Diagnostics
information can be obtained in either of two ways:
(1) by reading the display on a hand-held or PC programmer or
(2) by observing the fault codes issued by the Status LEDs. See Table 4 for a summary of LED display
formats.
The pair of LEDs built into the controller (one red, one yellow) produce flash codes displaying all the currently
set faults in a repeating cycle. Each code consists of two digits. The red light flashes once, indicating that the
number of times the yellow light flashes below is the first digit of the fault code, and the red light flashes twice,
indicating that the number of times the yellow light flashes below is the second digit of the fault code.
Example: red light flashes once, followed by yellow light flashes four times.Then the red light blinks twice,
then the yellow light blinks twice, so the fault code is 42. Please refer to the list of fault information in this
manual for relevant fault codes and causes.
The Throttle Wiper Low indicates that the accelerator output is low on the hand-held programmer fault code
table.
The controller's two LEDs will display this repeating pattern
The numerical codes used by the yellow LED are listed in the troubleshooting table, which also lists possible
fault causes and describes the conditions that set and clear each fault.
Summary of LED display formats
The two LEDs have four different display modes, indicating the type of information they are providing:
DISPLAY STATUS
Neither LED illuminated Controller is not powered on/ vehicle has dead battery/ or severe damage.
Yellow LED flashing Controller is operating normally.
Yellow and red LEDs both on solid Controller is in Flash program mode.
Red LED light on solid
No software loaded, or an internal hardware fault detected by the
Supervisor or Primary microprocessor. Cycle KSI to clear. Reload
software or replace controller if necessary.
Red LED and yellow LED flash
alternately Controller has detected a fault. 2-digit code flashed by yellow LED
identifies the specific fault; one or two flashes by red LED indicate
whether first or second code digit will follow.
Troubleshooting
The troubleshooting chart provides the following information on all the controller faults:
•
fault code
•
fault name as displayed on the programmer's LCD
•
the effect of the fault
•
possible causes of the fault
•
fault set conditions
•
fault clear conditions.
Whenever a fault is encountered and no wiring or vehicle fault can be found,shut off KSI and turn it back on
to see if the fault clears. If it does not, shutoff KSI and remove the 35-pin connector. Check the connector for
corrosion or damage, clean it if necessary, and re-insert it.
1232SE drive controller and pump motor controller fault code table