Samsung AR07TSFABWKN, Руководство по обслуживанию, Страница: 87 / 137

Troubleshooting
Samsung Electronics 4-47
4-6-4 Outdoor unit fan error
1. Check items
1) Are the input voltage and power connection correct?
2) Is the motor connecting wire connected to the outdoor unit PCB correctly?
3) Are the indoor/outdoor fuses connected?
4) Are there any obstacles near the motor or propeller?
5) Is the motor driver out of order?
6) AJ020BXJ2CH, AJ024BXJ3CH Model check CNP901, AJ020BXS3CH, AJ***BX*4CH, AJ***BX*5CH Model check
CN901.
2. Check procedure
Yes
Turn off the power and restart the unit.
Check the outdoor unit power supply error.
No
Is the fan(CNP901 or CN901) connected
correctly?
Yes
Replace the inverter PCB.
No
Is the resistance
between pin1 and pin3 of the fan
(CNP901 or CN901) over 1MΩ.
Yes
Replace the inverter PCB.
No
Is the voltage
between pin4 and pin3 of the fan
(CNP901 or CN901) over 15V?
Yes
Replace the fan motor.
No
Is the voltage between
pin5 and pin3 of the fan (CNP901 or CN901)
during the operation 1V~6V?
Yes
Yes
Replace inverter PCB.
Replace the fan motor.
Replace the inverter PCB.
No
No
Is the fan running the operation mode?
Does the voltage
between pin6 and pin3 of the fan (CNP901 or CN901)
fluctuate? (High 5V~6V, Low:0V~1V)
1 pin DC 310V
2 pin -
3 pin Ground
4 pin DC 15V
5 pin VSP(0~5V)
6 pin VG (Feed Back – pulse)
# 6 # 6
# 1 # 1