Kaisai KFU-09HRDN1-QRC8GW, Service Manual

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For other motors:
NO. 1 2 3 4 5
Color Orange Grey White Pink Black
Signal Hu Hv Hw Vcc GND
Color Red Blue Yellow
Signal W V U
2) Release the UVW connector. Measure the resistance of U-V, U-W, V-W. If the resistance is not
equal to each other, the fan motor must has problems and need to be replaced. Otherwise, go to
step 2.
3) Power on and when the unit is in standby, measure the voltage of pin4-5 in feedback signal
connector. If the value is not 5V, change the PCB. Otherwise, go to step 3.
4) Rotate the fan by hand, measure the voltage of pin1-5, pin 2-5 and pin 3-5 in feedback signal
connector. If any voltage is not positive voltage fluctuation, the fan motor must has problems and
need to be replaced.
Index2:
1: Indoor AC Fan Motor
Power on and set the unit running in fan mode at high fan speed. After running for 15 seconds, measure the
voltage of pin1 and pin2. If the value of the voltage is less than 100V(208~240V power supply)or 50V(115V
power supply), the PCB must has problems and need to be replaced.