U9" Indoor Unit: Malfunction Of Transmission Between Indoor Units And Outdoor Units In The Same System - Daikin RXYQ72 Serivce Manual

Troubleshooting by Indication on the Remote Controller
2.49 "U9" Indoor Unit:
Indoor Units and Outdoor Units in the Same System
U9
Remote
Controller
Display
Applicable All models of indoor units
Models
Method of Detect the malfunction signal of any other indoor unit within the system concerned.
Malfunction
Detection
Malfunction When the malfunction decision is made on any other indoor unit within the system concerned.
Decision
Conditions
Supposed
Causes
184
Malfunction of Transmission Between
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
SiUS39-601
Troubleshooting