SiBE12-933_A
Check
Service Diagnosis
223
5.1.15 Turning Speed Pulse on the Indoor Unit PCB Check
Check No.19
(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 and 3).
(R11979)
12
11
10
9
8
7
6
5
4
3
2
1
Phase U
Free pin
S200
Free pin
Free pin
Free pin
Free pin
Free pin
Phase V
Phase W
GND
Motor control voltage (15 VDC)
Rotation pulse (5 VDC)