SiUS091601EA
Check
Part 6 Service Diagnosis
182
Note
8.2 Indoor Fan Motor Connector Check
Check No.03
FTX09/12/15NMVJU
Fan motor wire breakdown/short circuit check
(1) Check the connector for connection.
(2) Turn the power off.
(3) Check if each resistance at the phases U - V and V - W is within specified range in the table
below.
Motor control voltage check
(1) Check the connector for connection.
(2) Check the motor control voltage is generated (between the pins 2 - 3).
Rotation pulse check
(1) Check the connector for connection.
(2) Turn the power on and stop the operation.
(3) Check if the Hall IC generates the rotation pulse 4 times when the fan motor is manually
rotated once (between the pins 1 - 3).
R6000090
A measurement error might occur in the resistance value depending on the measurement
conditions and the method.
U-V/V-W Resistance
(
)
FTX09/12NMVJU
67.0 ~ 85.1
FTX15NMVJU
39.6 ~ 50.3
12
11
10
9
8
7
6
5
4
3
2
1
Phase U
Free pin
Free pin
Free pin
Free pin
Free pin
Free pin
Phase V
Phase W
GND
Motor control voltage (15 VDC)
Rotation pulse (5 VDC)
S200
Summary of Contents for FDMQ12RVJU
Page 18: ...SiUS091601EA 13 Part 2 Specifications 1 Specifications 14 Part 2 Specifications ...
Page 198: ...Check SiUS091601EA 193 Part 6 Service Diagnosis 18 24 class R24538 1 2 3 4 Multimeter ...
Page 201: ...SiUS091601EA Check Part 6 Service Diagnosis 196 18 24 class R24539 DC DC W V U ...
Page 229: ...SiUS091601EA Piping Diagrams Part 8 Appendix 224 RXL15QMVJU RXL18UMVJU 3D100007 3D123368 ...
Page 230: ...Piping Diagrams SiUS091601EA 225 Part 8 Appendix RXL24UMVJU 3D107985A ...