Pioneer QUANTUM INVERTER Series Service & Troubleshooting Manual page 132

Index:
1. Indoor or Outdoor DC Fan Motor(control chip is in 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 within the range showing in table below, the PCB has faulted and needs to be replaced.
• DC motor voltage input and output (voltage: 220-240V~):
• DC motor voltage input and output (voltage: 115V~):
2. Outdoor DC Fan Motor (control chip is in outdoor PCB)
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 has faulted and needs to be replaced. Otherwise, the PCB has faulted and need to be replaced.
No. Color Signal
1 Red Vs/Vm
2 --- ---
3 Black GND
4 White Vcc
5 Yellow Vsp
6 Blue FG
No. Color Signal
1 Red Vs/Vm
2 --- ---
3 Black GND
4 White Vcc
5 Yellow Vsp
6 Blue FG
Troubleshooting

Voltage
280V~380V
---
0V
14-17.5V
0~5.6V
14-17.5V
Voltage
140V~190V
---
0V
14-17.5V
0~5.6V
14-17.5V
24