Daikin RXYQ96PYDN Service Manual page 463

Troubleshooting (OP: Central Remote Controller)
Troubleshooting
448
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Were
any changes
made to the number
of units of central
equipment? (The central
equipment was connected once,
and then disconnected, or
additional central
equipment was
installed.)
NO
Have power
supplies to every central
equipment been
turned ON?
YES
Is the display of LCD OK?
YES
∗
Check 7
2
Check if the unit indicating
"A8" has no broken
of wiring.
Normal
∗1: Display screen control using intelligent Touch controller:
When the screen displays nothing by touching the screen, adjust the contrast volume.
∗
2 Check 7
: Referring to the information on P466.
YES
NO
Nothing is
NO
displayed on the LCD by operating
intelligent Touch controller.
(∗1)
NO
Has the Reset
switch (located inside of
equipment) SS1 been set
to the Normal
side?
YES
Abnormal
SiUS34-801A_b
Reset the power supplies of
every central equipment.
Turn ON the power supply of
the central equipment.
YES
Replace intelligent Touch
controller.
Set the Reset switch (located
NO
inside of equipment)
SS1 been set to the Normal
side.
Replace the central
equipment.
Correct the wiring.
Some central equipment gets
faulty. Conduct RUN/STOP
operations on every central
equipment, and then replace
the central equipment that
cannot control the indoor unit.
Troubleshooting