Troubleshooting for BP Unit
SiENBE18-621
306
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 BPMKS967B2B
Page 1: ...SiENBE18 621 E Series Service Manual Applied Models Super Multi Plus Heat Pump...
Page 12: ...SiENBE18 621 List of Functions 1 Part 1 List of Functions 1 List of Functions 2...
Page 19: ...List of Functions SiENBE18 621 8 List of Functions...
Page 33: ...Specifications SiENBE18 621 22 Specifications...
Page 69: ...Refrigerant Flow for Each Operation Mode SiENBE18 621 58 Refrigerant Circuit...
Page 121: ...Indoor Unit SkyAir Models SiENBE18 621 110 Function...
Page 169: ...Instruction SiENBE18 621 158 System Configuration FTXS 20 25 35C Indoor Unit...
Page 371: ...Method of Replacing The Inverter s Power Transistors Modules SiENBE18 621 360 Troubleshooting...
Page 393: ...SiENBE18 621 vi Index...