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Troubleshooting for BP Unit
SiEN18-622
358
Troubleshooting
6.6
Check
6.6.1 Power Supply Waveforms Check
Check No.14
Measure the power supply waveform between pins 1 and 3 on the terminal board, and check
the waveform disturbance.
Check to see if the power supply waveform is a sine wave (Fig.1).
Check to see if there is waveform disturbance near the zero cross (sections circled in Fig.2)
[Fig.1]
[Fig.2]
Summary of Contents for Super Multi Plus E-Series
Page 1: ...SiEN18 622 E Series Service Manual Applied Models zSuper Multi Plus Cooling Only Heat Pump...
Page 105: ...Refrigerant Flow for Each Operation Mode SiEN18 622 92 Refrigerant Circuit...
Page 157: ...Indoor Unit SkyAir Models SiEN18 622 144 Function...
Page 312: ...SiEN18 622 Ceiling Mounted Cassette Type System Configuration 300...
Page 424: ...Method of Replacing The Inverter s Power Transistors Modules SiEN18 622 412 Troubleshooting...
Page 446: ...Wiring Diagrams SiEN18 622 434 Appendix...
Page 452: ...SiEN18 622 vi Index...