Si20-701_B
Troubleshooting by Remote Controller
342
Troubleshooting
Is
the type of the
compressor inverter
PCB correct?
NO
YES
YES
Is the
type of the fan
inverter PCB
correct?
NO
Replace with the
correct fan
inverter PCB.
Replace with the
correct
compressor
inverter PCB.
Was
the dip switch
correctly set up
when replacing the
main PCB?
NO
Correctly set up
the DIP switch.
YES
Is the
lamp in
preparation (H2P) on
the main PCB turned
OFF?
NO
Correct the
connection wires.
Replace the
outdoor unit main
PCB.
YES
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.