![background image](http://html1.mh-extra.com/html/daikin/rxq25amv1b/rxq25amv1b_service-manual_4205016080.webp)
3
|
Components
Service manual
80
RXQ25+3 3 3
35AMV1B
Split Sensira R32 BBOP
ESIE21-16 – 2022.02
3.7 Inverter PCB
3.7.1 Checking procedures
As the inverter PCB is integrated in the main PCB of the unit, see
81] for the other check procedures.
To perform an electrical check of the inverter PCB
Prerequisite:
Stop the unit operation via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
Prerequisite:
Remove the required plate work, see
1
Open the compressor insulation.
DANGER: RISK OF ELECTROCUTION
Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure
the rectifier voltage is below 10 V DC before proceeding.
2
Remove the cover of the compressor wire terminals.
3
Disconnect the wiring 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.
Connect the Faston connectors to the Inverter Analyzer (SPP number 2238609).
4
Turn ON the power of the unit.
5
Use the remote control to activate the inverter test:
▪
Press the centre of
and
simultaneously.
▪
Press
to select T (test run mode).
▪
Press
to select FAN mode.
▪
Press
to start power transistor check operation.