38MARB: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
48
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
YES
NO
NO
Turn o 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?
Problem solved.
Replace the electric control box.
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