Daikin VRV II RXYQ5MATL Service Manual page 314

Si39-504
Power Transistor
IGBT (On Inverter
PC Board)
(Decision)
If other than given above, the power unit is defective and must be replaced.
Note: Above figures are measured by analogue tester. Make sure to set "Tester Range" to "x 1k".
Diode Module
(Decision)
If other than given above, the diode module is defective and must be replaced.
Note: Above figures are measured by analogue tester. Make sure to set "Tester Range" to "x 1k".
Appendix
Method of Replacing The Inverter's Power Transistors and Diode Modules
303