Specifications

Troubleshooting by Indication on the Remote Controller Si34-704
278 Troubleshooting
Troubleshooting
NO
NO
YES
YES
NO
NO
YES
Connect the power supply wire
for the outside control adapter to
5V supply line.
Replace the main PCB of the
outdoor unit.
YES
Replace the main PCB of the
outdoor unit.
NO
NO
YES
Set the cooling/heating switch of
the outside control adapter to
“individual”.
Switch cooling/heating in
a lump.
Setting of
cooling/heating switch
for the outside control
adapter is “Master
in a lump”.
Setting of
cooling/heating switch
for the outside control adapter
is “Slave in a lump”.
Check if
the normal condition
monitor LED for the outdoor
unit main PCB
blinks.
Check if the
outdoor unit is powered on.
Check if
the power supply
wire for the outside control
adapter is connected
to 5V supply
line.
Check if
the normal condition
monitor LED for the outside
control adapter
blinks.
Set the
cooling/heating switch
of the outside control adapter to
“individual”. Then check if the
failure occurs again.
YES
NO
The integrated addresses for
cooling/heating within the
outdoor/outdoor transmission are
duplicated. Set the address
again.
NO
YES
Replace the main PCB of the
outdoor unit.
Diagnosis Flow 2
YES
Replace the PCB of the outside
control adapter.
Supply power to the outdoor
unit.
Check 3 Check 4
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.