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 291
3.55
“
UH
”
Malfunction of System, Refrigerant System Address
Undefined
Remote
Controller
Display
UH
Applicable
Models
All models of indoor units
RXQ5P~54P
Method of
Malfunction
Detection
Detect an indoor unit with no address setting.
Malfunction
Decision
Conditions
The malfunction decision is made as soon as the abnormality aforementioned is detected.
Supposed
Causes
Improper connection of transmission wiring between indoor-outdoor units and outdoor-
outdoor units
Defect of indoor unit PC board
Defect of outdoor unit PC board (A1P)