Transmission Error (Between Indoor Unit Pcb And Auto Grille Control Pcb) - Daikin VRV S RXQ4/5ARV1 Service Manual

Troubleshooting by Error Code
5.15 Transmission Error (between Indoor Unit PCB and Auto
Grille Control PCB)
Applicable FXFSQ-AR (when auto grille panel BYCQ125EBSF is installed)
Models
C1-06
Error Code
Method of Error The status of communication between the indoor unit PCB (X70A) and the auto grille control
Detection PCB (X12A) is checked with the microcomputer.
Error Decision
When transmission communication between the indoor unit PCB and the auto grille control PCB
Conditions is not normally performed for a certain period of time or more.
Supposed  Defective connection of the transmission communication connector between the indoor unit
Causes
 Defective indoor unit PCB
 Defective auto grille control PCB
 External factors (e.g. noise)
218
PCB and the auto grille control PCB
SiAF332111E
Part 6 Service Diagnosis