Transmission Error Between Centralized Controller And Indoor Unit - Daikin SkyAir RZR-TA Series Service Manual

SiUS281811EA
4.57 Transmission Error between Centralized Controller and
Indoor Unit
UE
Error Code
Applicable All indoor units
Models Centralized controller
Method of Error Microcomputer checks if transmission between indoor unit and centralized controller is normal.
Detection
Error Decision When transmission is not carried out normally for a certain amount of time
Conditions
Supposed
 Disconnection or error of transmission wiring
Causes  Defective setting of group No. or address
 Transmission error between optional controllers for centralized control and indoor unit
 Defective PCB for centralized controller
 Defective indoor unit PCB
Troubleshooting
Reference
CHECK 15 Refer to page 305.
Part 6 Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Is
transmission
YES
wiring disconnected or
wired incorrectly?
NO
Has an
indoor unit once
YES
connected been removed
or its address
changed?
NO
Is
transmission with NO
all indoor units
error?
YES
Is the
transmission
wiring with the main
YES
controller disconnected or
wired incorrectly?
NO
Is the main
controller's connector
YES
for setting main controller
disconnected?
NO
Troubleshooting by Error Codes
Is the
NO
group No. of error
indoor units set?
YES
Fix the wiring correctly.
Reset power supply
simultaneously for all optional
centralized control equipment.
Set the group No.
correctly.
Replace the indoor unit
PCB.
Fix the wiring correctly.
Connect the connector
correctly.
Replace the indoor unit
PCB.
289