Method Of Replacing The Inverter's Power Transistors Modules - Daikin VRVIII-S Service Manual

Method of Replacing the Inverter's Power Transistors Modules

7. Method of Replacing the Inverter's Power
Transistors Modules
Checking failures in power semiconductors mounted on inverter PC board
Check the power semiconductors mounted on the inverter PC board 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
1 To make measurement, disconnect all connectors and terminals.
Inverter PC board
228
of resistance.
C+
C-
SiBE34-703
W
V
U
Appendix