Troubleshooting by Indication on the Remote Controller
316
3.66
U9
Transmission Error
between Indoor and Outdoor
Units in the Same System
Remote Controller Display
U9
Applicable Models
All indoor models
VRVIII, III-S and III-Q Series
Method of Error Detection
Detect the abnormal signal for the other indoor units
within the circuit by outdoor unit PCB
Error Decision Conditions
When the error decision is made on any other indoor unit
within the system concerned
Supposed Causes
Transmission error within or outdoor of other system
Defective electronic expansion valve in indoor unit of
other system
Defective PCB of indoor unit in other system
Improper connection of transmission wiring between
indoor and outdoor unit
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