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 283
3.51
“
UA
”
Improper Combination of Indoor and Outdoor Units,
Indoor Units and Remote Controller
Remote
Controller
Display
UA
Applicable
Models
All models of indoor unit
RXQ5P~54P
Method of
Malfunction
Detection
A difference occurs in data by the type of refrigerant between indoor and outdoor units.
The number of indoor units is out of the allowable range.
Malfunction
Decision
Conditions
The malfunction decision is made as soon as either of the abnormalities aforementioned is
detected.
Supposed
Causes
Excess of connected indoor units
Defect of outdoor unit PC board (A1P)
Mismatching of the refrigerant type of indoor and outdoor unit.
Setting of outdoor PC board was not conducted after replacing to spare parts PC board.
Troubleshooting
Go on to the Diagnosis Flow 1
Check the LED lamps for “Check 3”
corresponding to the malfunction
code “UA” and for Check 4 in the
monitor mode. (Refer to P.196, 197
for how to check.)
Check 3 Check 4
Go on to the Diagnosis Flow 2
Check 3 Check 4
Go on to the Diagnosis Flow 3
Check 3 Check 4
Go on to the Diagnosis Flow 4
Check 3 Check 4
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.