Specifications
Table Of Contents
- Cover
- Table of Contents
- Part 1 General Information
- Part 2 Specifications
- Part 3 Refrigerant Circuit
- Part 4 Function
- Part 5 Test Operation
- Part 6 Troubleshooting
- Part 7 Appendix
- 1. Piping Diagrams
- 2. Wiring Diagrams for Reference
- 3. List of Electrical and Functional Parts
- 4. Option List
- 5. Piping Installation Point
- 6. Example of connection (R-410A Type)
- 7. Thermistor Resistance / Temperature Characteristics
- 8. Pressure Sensor
- 9. Method of Checking the Inverter’s Power Transistors and Diode Modules
- Part 8 Precautions for New Refrigerant (R-410A)
- Index
- Drawings & Flow Charts
Si34-704 Troubleshooting by Indication on the Remote Controller
Troubleshooting 273
Troubleshooting
NO
YES
YES
NO
()
Continued from the previous page
In Check 4, LED
lamp indicates as follows:
Continue operation.
Make a diagnosis again based on
the indication in 2 minutes and
over.
The indoor units PCB indicating
“U9” are normal.
Check the indoor units in the other
circuits to diagnose failure
according to the corresponding
malfunction codes.
Start operation of all the indoor
units.
Check if all the units
indicate “U9”.
Check if more than
2 minutes passed since
“U9”was indicated.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.