Daikin Sky Air Advance RZA200D7Y1B Service Manual page 87

To perform a power transistor check of the inverter PCB
RZA200+250D7Y1B
Sky Air Advance-series
ESIE19-13A – 2020.05
Are the test results OK?
Yes
No
Prerequisite: First check the rectifier voltage of the inverter PCB, see
"3.7.1 Checking procedures" [
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
1 Open the compressor insulation.
DANGER: RISK OF ELECTROCUTION
Confirm the rectifier voltage is below 10 V DC before proceeding, see
rectifier voltage" [
2 Remove the cover of the compressor wire terminals.
a Compressor wire terminals cover
3 Disconnect the Faston connectors from the compressor wire terminals U, V
and W.
INFORMATION
Note the position of the Faston connectors on the compressor wire terminals to
allow correct connection during installation.
Action
Diode module and power module are
OK. Perform a power transistor check of
the inverter PCB, see
procedures" [
Replace the inverter PCB, see
"3.7.2 Repair
4
81].
4
135].
a
3 Components
|
"3.7.1 Checking
4
81].
4
procedures" [ 89].
"To check the
Service manual
87