Transmission Error Between Main And Sub Remote Controllers - Daikin VRV IV-S RXTQ-TAVJU Series Service Manual

SiUS331604E
4.43 Transmission Error between Main and Sub Remote
Controllers
U8
Error Code
Applicable All indoor units
Models
Method of Error In case of controlling with 2-remote controller, check the system using micro-computer if signal
Detection transmission between indoor unit and remote controller (main and sub) is normal.
Error Decision
Normal transmission does not continue for specified period.
Conditions
Supposed
Causes
Troubleshooting
Service Diagnosis
Transmission error between main and sub remote controller
Connection between sub remote controllers
Defective remote controller PCB
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Using 2-remote
controllers control.
YES
SS1 of both remote
controllers is set to "SUB."
YES
NO SS1 of remote controller
PCBs is set to "MAIN."
YES
NO
Troubleshooting by Error Code
NO
Set SS1 to "MAIN"; the
power supply OFF once and
then back ON.
Turn the power OFF and
then back ON. If an error
occurs, replace the remote
controller PCB.
Set one remote controller to
"MAIN"; the power supply
OFF once and then back
ON.
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