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
Troubleshooting by Indication on the Remote Controller Si34-704
234 Troubleshooting
3.24
“
H9
”
Outdoor Unit: Malfunction of Thermistor (R1T) for
Outdoor Air
Remote
Controller
Display
H9
Applicable
Models
RXQ5P~54P
Method of
Malfunction
Detection
Malfunction is detected from the temperature detected by the outdoor air thermistor.
Malfunction
Decision
Conditions
When the outside air temperature thermistor has short circuit or open circuit.
Supposed
Causes
Defective thermistor connection
Defect of thermistor (R1T) for outdoor air
Defect of outdoor unit PC board (A1P)
Troubleshooting
∗
Refer to “Thermistor Resistance / Temperature Characteristics” table on P361.
(V3070)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Resistance
is normal when
measured after
disconnecting the thermistor
(R1T) from the outdoor
unit PC board.
(1.8kΩ to
800kΩ)
Connector is
connected to X18A of
outdoor PC board
(A1P).
Replace outdoor unit PC board
(A1P).
Connect the connector and turn on
again.
NO
NO
Replace the thermistor (R1T)
YES
YES