SiBE041010 Check
Service Diagnosis 97
5.1.11 Indoor Unit PCB Output Check
Check No.18 (1) Check the connector for connection.
(2) Check the motor control voltage is generated (between the pins 2 and 3).
5.1.12 Rotation Pulse Check on the Indoor Unit PCB
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)
(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)
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