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38MGRBQ: Service Manual
Index 1:
1. Indoor AC Fan Motor
Power on the unit and set the unit running in fan mode at the 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 has an issue and needs to be
replaced.
2. Indoor DC Fan Motor (Control Chip is inside the fan motor)
Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in the fan motor connector. If the voltage value is not in the
range shown in table, the PCB has an issue and needs to be replaced.
For other models:
DC motor voltage input and output
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
NO.
COLOR
1
Red
2
---
3
Black
4
White
5
Yellow
6
Blue
SIGNAL
VOLTAGE
Vs/Vm
200V~380V
---
GND
Vcc
13.5-16.5V
Vsp
FG
13.5-16.5V
39
---
0V
0~6.5V
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