Check
SiUS091628EA
101
Service Diagnosis
5.2
Indoor Fan Motor Connector Output Check
Check No.02
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).
5.3
Power Supply Waveforms Check
Check No.11
Measure the power supply waveform between No. 1 and No. 2 on the terminal block, and check the
waveform disturbance.
Check if the power supply waveform is a sine wave (Fig.1).
Check if there is waveform disturbance near the zero-cross (sections circled in Fig.2).
8
7
6
5
4
3
2
1
X20A
(R24373)
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
Fig.1
Fig.2
Содержание FFQ09Q2VJUFFQ12Q2VJUFFQ15Q2VJUFFQ18Q2VJURX09QMVJURX12QMVJURX15QMVJURX18QMVJU
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