68Service Manual – SC5000 04 - Control System
2-102 Temperature Sensor Fault
Description Internal temperature sensor has invalid value
Setting
Conditions
Same
When Monitored
Always
Possible Causes
Initial Action Reboot the machine. If the error persists, replace the power module
Troubleshooting Steps
2-103 K2 Coil Short
Description K2 Power Module contactor coil is shorted
Setting
Conditions
When Monitored
Always
Possible Causes
Initial Action
Troubleshooting Steps
1. Disconnect the Brown wire from the K2 relay coil.
2. Check the resistance across the relay coil terminals.
− If the resistance is at or near 0 ohms, replace the relay.
3. Check the resistance between the loose brown wire and the Gray wire on the relay coil.
− If the resistance is at or near 0 ohms, repair or replace the wiring between the relay and power
module.
User Interface (A9) Error Codes
4-705 Display Lost Comms
Description The user interface display has lost communication with the Main Machine Controller
Setting
Conditions
This error code is set by the display itself, and represents a
loss of CAN bus communication to the MMC.
When Monitored
Always
Possible Causes
• The MMC is known to be powered, because it is supplying the 12V needed for the
display to show this error.
• Failure of all or part of the CAN0 network.
• MMC is at fault.
Initial Action Reboot the machine and see if the error persists.
Troubleshooting Steps continued on next page
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