U9 Transmission Error Between Indoor And Outdoor Units In The Same System - Daikin R71FUV1 Service Manual

Troubleshooting by Remote Controller
U9
3.97
Between Indoor and Outdoor
Units in the Same System
Remote Controller Display
U9
Applicable Models
RZQ-C7, CMSQ
Method of Error Detection
Detect the error signal of any other indoor unit within the
system concerned.
Error Decision Conditions
When the error decision is made on any other indoor unit
within the system concerned
Supposed Causes
Defective transmission within or outside of other
system
Defective electronic expansion valve in indoor unit of
other system
Defective indoor unit PCB in other system
Improper connection of transmission wiring between
indoor and outdoor unit
Transmission Error
Si20-701_B
421