Daikin VRVIII-S, Service Manual

Page: 194 / 266

SiENBE34-703 Troubleshooting by Indication on the Centralized remote control
Troubleshooting 183
4.3 “
M8
” Malfunction of Transmission between Optional
Controllers for Centralized Control
remote control
Display
M8
Applicable
Models
Centralized remote control
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
!
Malfunction of transmission between optional controllers for centralized control
! Defect of PC board of optional controllers for centralized control
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
(V2833)
Caution
Is
transmission wiring
disconnected or wired
incorrectly?
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 PC board of the
one that is unable to control the
indoor unit.
Fix the wiring correctly.
Has a
once
connected optional
controller for centralized
control been disconnected
or its address
changed?
Turn on power supply for all
optional controllers for centralized
control.
Reset power supply simultaneously
for all optional controllers for
centralized control.
Is
the
power supply
turned on for all optional
controllers for
centralized
control?
Set reset switch to "normal."
Is
the reset
switch of all optional
controllers for centralized
control set to ''normal?''
YES
YES
YES
YES
NO
NO
NO
NO