Daikin RXYQ96PYDN, Service Manual

Page: 443 / 567

Troubleshooting by Indication on the Remote Controller SiUS34-801A_b
428 Troubleshooting
Troubleshooting
NO
NO
YES
YES
NO
NO
YES
Connect the power supply wire
for the external control adaptor
for outdoor unit to 5V supply line.
Replace the main PC board of
the outdoor unit.
YES
Replace the main PC board of
the outdoor unit.
NO
NO
YES
Set the cooling/heating switch of
the external control adaptor for
outdoor unit to “individual”.
Switch cooling/heating in
a lump.
Setting of
cooling/heating switch
for the external control adaptor
for outdoor unit is “Master
in a lump”.
Setting of
cooling/heating switch
for the external control adaptor
for outdoor unit is “Slave
in a lump”.
Check if
the normal condition
monitor LED for the outdoor
unit main PC board
blinks.
Check if the
outdoor unit is powered on.
Check
if the power supply
wire for the external control adaptor
for outdoor unit is connected
to 5V supply
line.
Check
if the normal
condition monitor LED for
the external control adaptor
for outdoor unit
blinks.
Set
the cooling/heating
switch of the external control
adaptor for outdoor unit 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 PC board of
the outdoor unit.
Diagnosis Flow 2
YES
Replace the PC board of the
external control adaptor for
outdoor unit.
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.