SiUS39-601
Troubleshooting by Indication on the Remote Controller
Troubleshooting
181
2.47
“
U7
”
Indoor Unit:
Malfunction of Transmission Between
Outdoor Units
Remote
Controller
Display
U7
Applicable
Models
All models of indoor units
Method of
Malfunction
Detection
Microcomputer checks if transmission between outdoor units.
Malfunction
Decision
Conditions
When transmission is not carried out normally for a certain amount of time
Supposed
Causes
Improper connection of transmission wiring between outdoor unit and external control adaptor
for outdoor unit.
Improper cool/heat selection
Improper cool/heat unified address (outdoor unit, external control adaptor for outdoor unit)
Defect of outdoor unit PC board (A1P)
Defect of external control adaptor for outdoor unit
Improper connection of transmission wiring between outdoor units.
Summary of Contents for BSVQ36MVJU
Page 115: ...Field Setting SiUS39 601 104 Test Operation ...
Page 227: ...Troubleshooting OP Unified ON OFF Controller SiUS39 601 216 Troubleshooting ...
Page 231: ...Piping Diagrams SiUS39 601 220 Appendix 1 Piping Diagrams 1 1 Outdoor Unit RXYQ72M 96M ...
Page 236: ...SiUS39 601 Wiring Diagrams for Reference Appendix 225 RXYQ144 168 192MTJU C 3D050353A ...
Page 249: ...Example of Connection SiUS39 601 238 Appendix ...
Page 265: ...Precautions for New Refrigerant R 410A SiUS39 601 254 Precautions for New Refrigerant R 410A ...
Page 269: ...SiUS39 601 iv Index ...