Haier MRV5-H - Fan Motor Detection Standard

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8.2.5 Fan Motor Detection Standard
Fan Motor Code: 0150401918C
Expected readings of control
PWB VDC outputs to DCFM
Expected readings of DC fan
motor circuit board resistances
Multi meter test points for VDC
Multimeter
red probe
Multimeter
black probe
PCB DC volts
Multimeter
black probe
Multimeter
red probe
DCFM PWB
resistance value
SE GND2 5V SE GND2
+5V GND2 5V +5VG ND2
A2 GND2 5V A2 GND2
Wring of DC fan motor
1G ND2
Communication signal
public ground
Blue
2S E
Send or receive signal
wire
Gray
3 +5V
5V communication
power supply
Yellow
5A 2
Communication
address
White
Expected readings of control
PWB VDC outputs to DCFM
Expected readings of DC fan
motor circuit board resistances
Multi meter test points for VDC
Multimeter
red probe
Multimeter
black probe
PCB DC volts
Multimeter
black probe
Multimeter
red probe
DCFM PWB
resistance value
+280VDC GND 280VDC +280VDC GND 1.31
Wring of DC fan motor
1 +280VDC
Input DC high voltage
positive
Red
2G ND
Input DC high voltage
negative
White
3
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