Indoor Fan Motor Connector Check - Daikin FTX-N Series Service Manual

SiUS091601EA
8.2

Indoor Fan Motor Connector Check

Check No.03
FTX09/12/15NMVJU
 Fan motor wire breakdown/short circuit check
 Motor control voltage check
 Rotation pulse check
FTX09/12NMVJU
FTX15NMVJU
Note
A measurement error might occur in the resistance value depending on the measurement
conditions and the method.
Part 6 Service Diagnosis
(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.
(1) Check the connector for connection.
(2) Check the motor control voltage is generated (between the pins 2 - 3).
(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).
12
11
10
9
8
7
6
5
4
3
2
1
U-V/V-W Resistance
67.0 ~ 85.1
39.6 ~ 50.3
S200
Phase U
Free pin
Free pin
Phase V
Free pin
Free pin
Phase W
Free pin
Free pin
GND
Motor control voltage (15 VDC)
Rotation pulse (5 VDC)
()
Check
R6000090
182