Midea MV5-X252W/V2GN1 Service Manual page 94

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The power supply is abnormal
Voltage between P and N on fan module
Replacing the fan module resolves the
Replace outdoor main PCB
Notes:
1. Refer to Part 4, 1.1 "PCB Switches and Switch Settings".
2. Refer to Figures 5-1.1 and 5-1.3 in Part 5, 1 "Outdoor Unit Electric Control Box Layout" and to the V5 X Engineering Data Book, Part 2, 5 "Wiring Diagrams".
3. Refer to Part 2, 1 "Layout of Functional Components".
4. The normal voltage between P and N on the fan module is 310V DC. Refer to Figures 5-1.1 and 5-1.3 in Part 5, 1 "Outdoor Unit Electric Control Box Layout"
and to Figure 5-4.18.
Figure 5-4.18: Fan module layout
N
P
201608
No
4
is abnormal
No
error
No
Yes
Check the power supply equipment
Yes
Replace AC filter board
Program input port
Main PCB control signal input port
Power supply to fan motor
Fault LED indicator
Power supply LED indicator
Signal feedback port
V5 X VRF 50/60Hz
93