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Midea M2OC-14HRDN1 Technical & Service Manual page 30

Multi split type, heat pump air conditioners r410a multi dc inverter
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ODMI-1103-A
8.3.7 Communication malfunction between outdoor main chip and compressor control chip.
Check whether the IPM board has error display
Yes
No
Replace the outdoor PCB
Replace the IPM board
No
No
Replace the electric control box

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