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Method of Replacing The Inverter’s Power Transistors Modules
SiEN18-622
410
Troubleshooting
11.Method of Replacing The Inverter’s Power
Transistors Modules
Checking failures in power semiconductors mounted on inverter PCB
Check the power semiconductors mounted on the inverter PCB by the use of a multiple tester.
<Items to be prepared>
1
Multiple tester : Prepare the digital type of multiple tester with diode check function.
<Preparation>
1
Turn OFF the power supply. Then, after a lapse of 10 minutes or more, make measurement
of resistance.
1
To make measurement, disconnect all connectors and terminals.
Inverter PCB
C-
C+
W
V
U
Summary of Contents for FTKS50BVMB
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 ...