U9" Malfunction Of Transmission Between Indoor And Outdoor Units In The Same System - Daikin VRV II RXYQ5MY1B Service Manual

Troubleshooting by Indication on the Remote Controller
2.47 "U9" Malfunction of Transmission Between Indoor and
Outdoor Units in the Same System
U9
Remote
Controller
Display
Applicable
All models of indoor units
Models
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
228
Malfunction of transmission within or outside of other system
Malfunction of electronic expansion valve in indoor unit of other system
Defect of PC board of indoor unit in other system
Improper connection of transmission wiring between indoor and outdoor unit
SiE39-404
Troubleshooting