21
Index 1:
1 Indoor DC fan motor (control chip is inside fan motor)
Power on and when the unit is in standby, measure the voltage of pin1−pin3, pin4−pin3 in fan motor connector. If the value of the
voltage is not in the range showing in below table, the PCB must have problems and need to be replaced.
Fig. 27 – Indoor DC fan motor
DC motor voltage input and output
Table 8—Signals
No. Color Signal Voltage
1 Red Vs/Vm 200~380V
2 --- --- ---
3 Black GND 0V
4 White Vcc 13.5~16.5V
5 Yellow Vsp 0~6.5V
6 Blue FG 13.5~16.5V
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