Troubleshooting Si71-502
46 Troubleshooting
1.11 Data Transmission Error (Between LCD Master Remote Controller and Slave
Remote Controller)
Remote Controller
LCD Display
Error Code
U8
Inspection Blinking Unit No. OFF
LED Indication Remote Controller
1
Main Unit
5
Error Detection
Method
Microcomputer checks if data is transmitted properly between master-slave remote controller.
Error Generating
Conditions
When data transmission is not performed correctly for a certain time period.
Possible Causes
Faulty remote controller setting
Faulty remote controller
Troubleshooting
NO
NO
Is
master-slave
selection switch set
to Master?
YES
Is
master-slave
remote control
used?
Is
master/slave
selection switch
properly
set?
YES
Set master-slave selection switch to
Master. Turn off power, then restart.
Replace remote controller.
Set one master-slave selection switch to
Master, and set the other to Slave. Then
turn off power, and restart operation.
Replace either master or slave remote
controller.
(HF010)
YES
NO
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