Troubleshooting by Indication on the Remote Controller
SiUS39-601
166
Troubleshooting
2.37
“
LC
”
Outdoor Unit:
Malfunction of Transmission Between
Inverter and Control PC Board
Remote
Controller
Display
LC
Applicable
Models
RXYQ72M, 96M
Method of
Malfunction
Detection
Check the communication state between inverter PC board and control PC board by micro-
computer.
Malfunction
Decision
Conditions
When the correct communication is not conducted in certain period.
Supposed
Causes
Malfunction of connection between the inverter PC board and outdoor control PC board
Defect of outdoor control PC board (transmission section)
Defect of inverter PC board
Defect of noise filter
External factor (Noise etc.)
Summary of Contents for RXYQ72
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 255: ...Method of Replacing The Inverter s Power Transistors and Diode Modules SiUS39 601 244 Appendix...
Page 265: ...Precautions for New Refrigerant R 410A SiUS39 601 254 Precautions for New Refrigerant R 410A...
Page 269: ...SiUS39 601 iv Index...