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Troubleshooting
Troubleshooting
Troubleshooting
Installing and servicing this equipment requires
access to parts which may cause an electric shock
or other serious injury if the work is not performed
properly. Do not install or repair this equipment
unless you are trained and qualified.
Follow the
Fluid Voltage Discharge and Grounding
Procedure, page
25, before checking or servicing
the system and whenever you are instructed to
discharge the voltage.
LED
LED
LED Diagnostic
Diagnostic Information
Diagnostic
Information
The following LED signals, diagnoses, and solutions apply to the Control Interface
LED Status
LED
LED
Status
Status Signal
Signal
Signal
Green on
Yellow
Red solid
Red flashing fast
Red flashing slow
Red flashes three times, pauses,
and then repeats
Troubleshooting the
Troubleshooting
Troubleshooting
Problem
Problem
Problem
The control interface is not on.
The control interface has power
but does not function.
Red module status LED stays on
constantly even after power cycle.
3A7370B
Information
Diagnosis
Diagnosis
Diagnosis
The system is powered up.
Internal communication is in
progress.
Hardware failure.
Software is uploading.
Token error
Invalid rotary switch position (FCM
and CGM only)
the Control
Control Interface
Interface
the
Control
Interface
Cause
Cause
Cause
Power is not on.
Loose or disconnected CAN cable. Tighten or connect CAN cable.
Hardware failure.
Hardware failure.
To reduce the risk of an injury, follow the
Pressure Relief Procedure, page
you are instructed to relieve the pressure.
Solution
Solution
Solution
—
—
Replace module.
—
Remove token and upload the
software token again.
Change the rotary switch position
on the control module (inside
the air or speed controller) to a
valid position, and then restart the
system.
Solution
Solution
Solution
Turn power supply on.
Replace.
Replace.
Troubleshooting
26, whenever
53
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