Daikin VRV - WII, Service Manual

Page: 232 / 312

SiUS30-604 Troubleshooting by Indication on the Remote Controller
Troubleshooting 219
2.45
“
U9
”
Malfunction of Transmission between Indoor and
Outside Units in the Same System
Remote
Controller
Display
U9
Applicable
Models All models of indoor units
Method of
Malfunction
Detection Detect the malfunction signal of any other indoor unit within the system concerned.
Malfunction
Decision
Conditions When the malfunction decision is made on any other indoor unit within the system concerned.
Supposed
Causes
„
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 outside unit