Daikin Sky Air Advance RZA200D7Y1B Service Manual page 85

To perform a diode module and power module check
RZA200+250D7Y1B
Sky Air Advance-series
ESIE19-13A – 2020.05
a Connector X3A
Is the measured voltage approximately
560 V DC?
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.
1 Turn OFF the respective circuit breaker.
DANGER: RISK OF ELECTROCUTION
Confirm the rectifier voltage is below 10 V DC before proceeding, see
rectifier voltage" [
2 Disconnect the Faston connectors U, V, W, L1B, L2B, L3B, P1, N31 and P11
from the inverter PCB.
a
Action
Diode module and power module are
OK. Perform a power transistor check of
the inverter PCB, see
procedures" [
Perform a diode module and power
module check, see
procedures" [
4
81].
4
135].
3 Components
|
"3.7.1 Checking
4
81].
"3.7.1 Checking
4
81].
"To check the
Service manual
85