Fan Motor Connector Check - Daikin 3MKS50E3V1B Service Manual

Check
8.2

Fan Motor Connector Check

Check No.02 FTXG, FTXS-J, FTXS-G, FVXG, FVXS Series
1. Check the connection of connector.
2. Check motor power supply voltage output (pins 4 - 7).
3. Check motor control voltage (pins 4 - 3).
4. Check rotation command voltage output (pins 4 - 2).
5. Check rotation pulse input (pins 4 - 1).
Check No.03 FTXS-K, CTXS-K Series
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 90
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
326
S1 or S200
7
6
5
4
3
2
1
Fan motor wire breakdown / short circuit check
12 - 9, and between 9 - 6).
Motor control voltage check
Rotation pulse check
rotated once (between the pins 1 - 3).
S200
12
11
10
9
8
7
6
5
4
3
2
1
Motor power supply voltage (310 ~ 340 VDC)
Unused
Unused
GND
Motor control voltage (15 VDC)
Rotation command voltage (1~ 5 VDC)
Rotation pulse input
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)
SiBE121135
(R14225)
Ω Ω
~ 100 (between the pins
(R11979)
Service Diagnosis