Daikin FTXR42EV1B9 Especificaciones Pagina 150

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Check SiBE04-624_B
140 Service Diagnosis
3.9 Rotating Pulse Check on Outdoor Unit PCB
Check No.16
For outdoor fan motor or humidifier fan motor
Outdoor fan motor: S70
Humidifier fan motor: S72
Make sure that the voltage of 320 ± 30 V is applied.
1. Set operation OFF and power OFF. Remove the connector [S70] or [S72].
2. Check that the voltage between the pins 4 - 7 is 320 VDC.
3. Check that the control voltage between the pins 3 - 4 is 15 VDC.
4. Check that the rotation command voltage between the pins 2 - 4 is 5 VDC.
5. Keep operation OFF and power OFF. Connect the connector [S70] or [S72].
6. Check whether 2 pulses (0 ~ 15 VDC) are output at the pins 1 - 4 when the fan motor is
rotated 1 turn by hand.
If NG in step 2 Defective outdoor unit PCB Replace the outdoor unit PCB.
If NG in step 4 Defective Hall IC Replace the outdoor fan motor.
If OK in both steps 2 and 4 Replace the outdoor unit PCB.
For hygroscopic fan motor
Check that the connectors [HK1] [HK2] [HK3] for proper connection.
1. Check that the power supply voltage 5 VDC is applied between [HK1] and [HK3].
If NG in step 1 Defective outdoor unit PCB Replace the outdoor unit PCB.
Fuses are commonly used as follows. Refer to the corresponding wiring diagram.
FU1 Hygroscopic fan motor
FU2
Outdoor fan motor
Humidifier fan motor
Four way valve coil
(R13941)
PCB
S70 or S72
1
2
3
4
5
6
7
Actual rotating pulse output (0 ~ 15V)
Rotation command pulse input (0 ~ 15V)
15 VDC
320 VDC
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