M8" Malfunction Of Transmission Between; Optional Controllers For Centralized Control - Daikin RTSQ20PY1 Service Manual

SiBE31-801_C
M8
5.2 " " Malfunction of Transmission between Optional
Controllers for Centralized Control
M8
Remote
Controller
Display
Applicable Centralized remote controller
Schedule timer
Models
Method of Detect the malfunction according to DIII-NET transmission data. (The system will be
automatically reset.)
Malfunction
Detection
Malfunction When no master controller is present at the time of the startup of slave controller.
When the centralized controller, which was connected once, shows no response.
Decision
Conditions
Supposed
Causes
Troubleshooting
∗1: Display screen control using intelligent Touch Controller:
∗2:
Troubleshooting
Malfunction of transmission between optional controllers for centralized control
Defect of PCB of optional controllers for centralized control
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 centralized
controller? (The centralized controller
was connected once, and then
disconnected, or additional centralized
controller was installed.)
NO
Have power supplies
to every centralized
controller been turned
ON?
YES
Is the display of LCD
OK?
YES
∗2
Check 7
CHECK 7
Check if the unit indicating
A8
" " has no broken of
wiring.
Normal
When the screen displays nothing by touching the screen, adjust the contrast volume.
Check 7 : Referring to the information on P.344.
CHECK 7
Troubleshooting (OP: Centralized Remote Controller)
intelligent Touch Controller
YES
NO
NO
Nothing is 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
Reset the power supplies of
every centralized controller.
Turn ON the power supply of
the centralized controller.
YES
Replace the intelligent Touch
Controller.
NO
Set the Reset switch (located
inside of equipment)
SS1 been set to the Normal
side.
Replace the centralized
controller.
Correct the wiring.
Some centralized controller
gets faulty. Conduct RUN/
STOP operations on every
centralized controller, and then
replace the centralized
controller that cannot control
the indoor unit.
324