Troubleshooting by Error Code
SiME332106E
260
Part 6 Service Diagnosis
Reference
5.61 Transmission Error between Main and Sub Remote
Controllers
Applicable
Models
All indoor unit models
Error code
U8
Method of Error
Detection
In case of controlling with 2 remote controllers, check the system using microcomputer if signal
transmission between indoor unit and remote controller (main and sub remote controller) is
normal.
Error Decision
Conditions
Transmission is not carried out normally for a certain amount of time.
Supposed
Causes
Transmission error between main and sub remote controller
Connection between sub remote controllers
Defective remote controller PCB
Troubleshooting
Refer to page 34 for Main/Sub setting.
Main/Sub
setting of both remote
controllers are set to
Sub.
Main/Sub
setting of the remote
controller is set to
Main.
Set Main/Sub setting of the
remote controller to Main.
Turn OFF the power supply,
and restart operation.
Set Main/Sub setting of one
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.
YES
YES
YES
NO
NO
NO
Using 2 remote
controllers control.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
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