Communication Error Between Outdoor Main Chip And Compressor Chip - Carrier 38MARB Service Manual

38MARB: Service Manual
DIAGNOSIS AND SOLUTION (CONT)
Communication Error Between Outdoor Main Chip and Compressor Driven Chip (PC40)
Description: The main chip cannot detect the compressor driven chip.
Recommended parts to repair:
• Outdoor PCB
• Electric control box
Troubleshooting
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Turn off the power.
Wait 2 minutes then turn back on.
Is it still displaying
the error code.
Replace the outdoor main board.
Can the system
operate normally?
NO
Replace the electric control box.
NO
Problem solved.
YES
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