Malfunction Of Transmission Between Optional Controllers For Centralized Control; Centralized Control - Daikin VRV III REYQ8PY1 Service Manual

Si37-701
M8
" "
4.2 Malfunction of Transmission between Optional
Controllers for Centralized Control
M8
Remote
Controller
Display
Applicable Central 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
Troubleshooting

Malfunction of transmission between optional controllers for centralized control

Defect of PC board 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 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 Ve-Up controller:
When the screen displays nothing by touching the screen, adjust the contrast volume.
∗
2 Check 7
: Referring to the information on P352.
Troubleshooting (OP: Central Remote Controller)
Intelligent Touch Controller
YES
NO
Nothing is
NO
displayed on the LCD by operating
Ve-Up 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 central equipment.
Turn ON the power supply of
the central equipment.
YES
Replace Ve-Up 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.
337