Daikin RXSQ24TAVJU Service Manual page 259

SiUS331708EA
Troubleshooting
CHECK 15
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Is the
centralized
controller No. changed? YES
(Number of centralized
controllers removed
or added)
NO
Does
the power supply of
NO
all the centralized controllers
connect?
YES
Is there any
NO
display on the LCD
screen?
YES
CHECK 15
YES
The unit with the error code
M8 has broken
wire.
NO
∗1. Intelligent Touch Controller screen operation
If there is no display on the touch screen, adjust the
contrast knob.
Refer to page 272.
Still no
display after
YES
operating the intelligent
Touch Controller.
(∗1)
NO
Are the
reset switch (inside
NO
the unit) and SS1 set to the
normal position?
YES
Troubleshooting by Error Code
Reset the power supply of
all the centralized
controllers.
Connect the power supply
of the centralized
controllers.
Replace the intelligent
Touch Controller.
Set the reset switch
(inside the unit) and
SS1 to the normal
position.
Replace the
centralized controller.
Correct the wiring.
Either of the centralized
controllers is failing.
Run/stop the unit by all the
centralized controllers, and
replace the centralized
controllers that fail to control the
indoor unit.
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