Appendix A
63
Direction of crimp
FASTON terminal
This size is shortened
by the crimp.
6.6 Rotation pulse check on outdoor unit PCB
6.6.1 Turning speed pulse input on outdoor unit PCB check for ARXN/RXN25/35MV1B9
a. Make sure control voltage of DC15V is being applied.
b. Make a turn of the fan motor with hand and make sure the pulse (0-15V) appears 4 times at pins
10 and 13.
S70
13
12
11
10
9
8
7
6
5
4
3
2
1
HV (Hall IC)
HU (Hall IC)
Phase W
15V
Free pin
Free pin
Phase V
Free pin
Free pin
Phase U
Free pin
Free pin
6.6.2 Rotation pulse check on outdoor unit PCB for ARXN/RXN50/60M,RXB50/60B.RX60CG
Make sure that the voltage of 320 ± 30 V is applied.
1. Set operation off and power off. Disconnect the connector S70.
2. Check that the voltage between the pins 4 & 7 is 320 VDC.
3. Check that the control voltage between the pins 3 & 4 is 15 VDC.
4. Check that the rotation command voltage between the pins 2 & 4 is 0 - 6.5 VDC.
5. Keep operation off and power off. Connect the connector S70.
6. Check whether 4 pulses (0 ~ 15 VDC) are output at the pins 1 - 4 when the fan motor is rotated 1
turn by hand.
When the fuse is melted, check the outdoor fan motor for proper function.
If NG in step 2
:
Defective PCB and replace the outdoor unit PCB.
If NG in step 4
:
Defective Hall IC and replace the outdoor fan motor.
If OK in both steps 2 and 4,replace the outdoor unit PCB.
1
2
3
4
5
6
7
PCB
S70
Actual rotation pulse input (0 ~ 15 VDC)
320 VDC
Control voltage 15 VDC
Rotation command voltage (0 ~ 6.5 VDC)
Summary of Contents for ARXN25MV1B
Page 1: ...SERVICE MANUAL Inverter DOO 0RXQWHG Single Split SM 5WMY A1 R410A ...
Page 60: ...Wiring Connection 54 4 0 Wiring Connection Model ATXN FTXN 25 35L M ARXN RXN 25 35L M ...
Page 61: ...Wiring Connection 55 Model ATXN FTXN 50 60L ARXN RXN 50 60L ...
Page 62: ...Wiring Connection 56 Model ATXN FTXN 50 60M ARXN RXN 50 60M ...
