Transmission Error Between Main And Sub Remote Controllers - Daikin REYQ-XA Service Manual

Troubleshooting by Error Code
3.68 Transmission Error between Main and Sub Remote
Controllers
U8
Error Code
Applicable All indoor unit models
Models
Method of Error In case of controlling with 2 remote controller, check the system using microcomputer if signal
Detection transmission between indoor unit and remote controller (main and sub remote controller) is normal.
Error Decision
When transmission is not carried out normally for a certain amount of time.
Conditions
Supposed
Causes
Troubleshooting
Refer to page 90 for Main/Sub setting.
355
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
Main/Sub
setting of both remote
controllers are set to
Sub.
YES
Main/Sub
NO
setting of the remote
controller is set to
Main.
YES
NO
SiUS371901E
NO
Set Main/Sub setting of the
remote controller to Main.
Turn OFF the power supply,
and restart operation.
Turn the power OFF and
then restart. If an error
occurs, replace the remote
controller PCB.
Set Main/Sub setting of one
remote controller to Main.
Turn OFF the power supply,
and restart operation.
Service Diagnosis