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Components
To perform an electrical check of the inverter PCB
Service manual
74
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
,
, and
▪ Press
.
▪ Select T (test run mode).
▪ Press
to select FAN.
▪ Press
to start power transistor check operation.
CAUTION
Make sure that the Faston connectors are disconnected from the compressor wire
terminals and connected to the Inverter Analyzer before starting the power
transistor check operation. If NOT, power transistor check operation may damage
the compressor.
INFORMATION
Wait for 3 minutes for the power transistor check operation to start.
6 All LED's on the Inverter Analyzer must lit.
7 Turn off the respective circuit breaker.
"2.10 Plate
simultaneously.
ATXP20~35 + FTXP20~71 + ARXP20~35 + RXP20~71
4
work" [
92].
Split Comfora R32
ESIE18-01C – 2020.07
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Troubleshooting
