M8" Malfunction Of Transmission Between Optional; Controllers For Centralized Control - Daikin VRV II RXYQ5MATL Service Manual

Troubleshooting (OP: Central Remote Controller)
" M8 "
4.2 Malfunction of Transmission Between Optional

Controllers for Centralized Control

M8
Remote
Controller
Display
Applicable Central remote controller
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
234
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.
Has a once
connected optional
controller for centralized
control been disconnected
or its address
changed?
NO
Is
the power supply
turned on for all optional
controllers for
centralized
control?
YES
Is
the reset switch
of all optional controllers
for centralized control set
to ''normal?''
YES
Is
transmission wiring
disconnected or wired
incorrectly?
NO
YES
NO
NO
YES
Si39-504
Reset power supply
simultaneously for all optional

controllers for centralized control.

Turn on power supply for all
optional controllers for centralized
control.
Set reset switch to "normal".
Fix the wiring correctly.
The PC board of one of the
optional controllers for centralized
control is defective. Try turning
on/off using each optional
controllers for centralized control,
and replace the one that is unable
to control the indoor unit.
(V2833)
Troubleshooting