43
10.3.3.4 Outdoor unit fan speed has been out of control (E8)
Index 1:
1. Outdoor 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.
DC motor voltage input and output
NO.
Color
Signal
Voltage
1
Red
Vs/Vm
140V~380V
2
---
---
---
3
Black
GND
0V
4
White
Vcc
13.5-16.5V
5
Yellow
Vsp
0~6.5V
6
Blue
FG
15V
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 must has problems and need to be replaced. otherwise the PCB must has problems and
need to be replaced.
Summary of Contents for YU2E14YEEBMHO-X
Page 8: ...7 5 Wiring diagram YU2E14YEEBMHO X YU2E18YEEBMHO X...
Page 10: ...9...
Page 11: ...10 YU4E28YEEBMHO X YU4E36YEEBMHO X...
Page 12: ...11 YU5E42YEEBMHO X...
Page 34: ...33 10 3 1 2 Indoor outdoor units communication error...
Page 39: ...38 10 3 1 4 Open or short circuit of temperature sensor 10 3 1 5 Full water malfunction...
Page 42: ...41 10 3 3 2 Communication malfunction between IPM board and outdoor main board ODU E3...
Page 45: ...44 10 3 3 5 High pressure protection ODU P1 ForYU4E28YEEBMHO X YU4E36YEEBMHO X YU5E42YEEBMHO X...
Page 47: ...46 10 3 3 7 Current protection of compressor ODU P3...
Page 48: ...47 10 3 3 8 Temperature protection of compressor discharge ODU P4...
