Indoor Fan Motor Connector Check - Daikin 4MXS-R Series Service Manual

SiUS121736EA
8.2

Indoor Fan Motor Connector Check

Check No.02 CTXG, FTXR , CTXS, FTXS, 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).
FDMQ Series
1. Turn the power supply OFF.
2. With the fan motor connector disconnected, measure the resistance between each pin, then
Measuring points
FFQ Series
1. Check the connection of connector.
2. Check motor power supply voltage output (pins 5 - 8).
3. Check motor control voltage (pins 5 - 4).
4. Check rotation command voltage output (pins 5 - 3).
Service Diagnosis
S1 or S200
7
6
5
4
3
2
1
make sure that the resistance is more than the value mentioned in the following table.
Judgement
White - Blue 1 MΩ or more
Orange - Blue 100 kΩ or more
100 Ω or more
Brown - Blue
Red - Blue 100 kΩ or more
X20A
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
X8A
FG
White
Vsp
Orange
Brown Vcc
Blue GND
— —
— —
Red Vdc/Vm
(R25080)
Motor power supply voltage (290 ~ 330 VDC)
Unused
Unused
GND
Motor control voltage (15 VDC)
Rotation command voltage (0 ~ 5 VDC)
Rotation pulse input
Unused
Check
(R14225)
(R24373)
210