Troubleshooting By Indication On The Centralized Remote Controller; Ue" Malfunction Of Transmission Between Centralized Remote Controller And Indoor Unit; Troubleshooting By Indication On The Centralized Remote Controller.166; Ue" Malfunction Of Transmission Between Centralized Remote Controller - Daikin R-410A Service Manual

Troubleshooting by Indication on the Centralized Remote Controller

5. Troubleshooting by Indication on the Centralized
Remote Controller
"UE" Malfunction of Transmission between Centralized
5.1
Remote Controller and Indoor Unit
UE
Remote Controller
Display
Applicable
AII indoor unit models
Models Centralized Remote Controller
Method of
Microcomputer checks if transmission between indoor unit and central remote controller is
normal.
Malfunction
Detection
Malfunction
When transmission is not carried out normally for a certain amount of time
Decision
Conditions
! Malfunction of transmission between optional controllers for centralized control and indoor unit
Supposed
! Connector for setting master controller is disconnected.
Causes
! Failure of PC board for central remote controller
! Defect of indoor unit PC board
Troubleshooting
166
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Has an
indoor unit once
connected been remove
or its address
changed?
NO
Is the
power supply turned
on for indoor units displaying
malfunction?
YES
Is
transmission wiring
disconnected or wired
incorrectly?
YES
Is transmission
with all indoor units
malfunctioning?
YES
Is the
transmission wiring
with the master controller
disconnected or wired
incorrectly?
YES
Is the
master controller's
connector for setting
master controller
disconnected?
YES
YES
NO
NO
Is the group
NO
No. of malfunctioning
indoor units set?
YES
NO
NO
SiBE39-402A
Reset power supply
simultaneously for all optional
controllers for centralized
control.
Turn indoor unit's power
supply.
Fix the wiring correctly.
NO
Set the group No. correctly.
Replace indoor unit PC
board.
Fix the wiring correctly.
Connect the connector
correctly.
Replace the central PC board.
Troubleshooting
(V2832)