Outdoor Fan Motor Check - Daikin FDMQ-R Series Manual

Check
Caution
1. When the output frequency is low, the LEDs blink slowly. As the output frequency increases, the
2. On completion of the inverter analyzer diagnosis, be sure to re-crimp the FASTON terminals.
5.8

Outdoor Fan Motor Check

Check No.16
Make sure that the voltage is within 320
1. Set operation off and power off. Disconnect the connector S70 or S71.
2. Check that the voltage between the pins 4 - 7 is 320 VDC.
3. Check that the control voltage between the pins 4 - 3 is 15 VDC.
4. Check that the rotation command voltage between the pins 4 - 2 is 0 ~ 6.5 VDC.
5. Keep operation off and power off. Connect the connector S70 or S71.
6. Check whether 4 rotation pulses (0 ~ 15 VDC) are input at the pins 4 - 1 when the fan motor is
When the fuse is melted, check the outdoor fan motor for proper function.
111
LEDs blink quicker. (The LEDs look like they are lit.)
Otherwise, the terminals may be burned due to loosening.
rotated 1 turn by hand.
If NG in step 2  Defective PCB
If NG in step 4  Defective Hall IC  Replace the outdoor fan motor.
If OK in both steps 2 and 4
PCB
S70 or S71
1
2
3
4
5
6
7
Direction of crimp
FASTON terminal
VDC.
+ 100
– 50
 Replace the outdoor unit PCB (main PCB).
 Replace the outdoor unit PCB (main PCB).
Actual rotation pulse input (0 ~ 15 VDC)
Rotation command voltage (0 ~ 6.5 VDC)
Control voltage 15 VDC
320 VDC
SiUS071735EB
This size is shortened
by the crimp.
(R15292)
(R20507)
Service Diagnosis