38MHRC: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
34
DIAGNOSIS AND SOLUTION (CONT)
Indoor and Outdoor Unit Communication Error (E1)
Description: The indoor/outdoor unit communication
Possible causes:
• Wiring mistake
• Faulty Indoor or outdoor PCB
Troubleshooting
A210596
For certain models, outdoor PCB could not be removed separately. In this case, the outdoor electric control box should be replaced as a whole.
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