21100
Carrier Transicold
Critical
No Comm From Any Board to Main Micro
The main microprocessor does not detect communication from any of the system boards.
Possible causes
- Data bus power failure
- Short circuit in the CAN line
- Faulty main microprocessor
Recommended actions
- Check main switch and power fuses
- Inspect main communication bus cables
- Disconnect modules one by one to isolate the short
- Replace microprocessor if there is no general response
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