Service Manual
Table Of Contents
- Cover
- Table of contents
- Part 1 List of Functions
- Part 2 Specifications
- Part 3 Printed Circuit Board Connector Wiring Diagram
- Part 4 Refrigerant Circuit
- Part 5 Functions and Control
- Part 6 Test Operation and Field Settings
- Part 7 Remote Controller
- Part 8 Troubleshooting
- 1. Troubleshooting with LED
- 2. Service Diagnosis
- 3. Error Codes and Description
- 4. Troubleshooting for CTXG, CTXS, FTXS, CDXS, FDXS, FVXS Series
- 5. Troubleshooting for FFQ Series
- 6. Troubleshooting for Branch Provider (BP) Unit
- 7. Troubleshooting for Outdoor Unit
- 8. Thermistor Resistance/Temperature Characteristics
- 9. Pressure Sensor
- 10. Method of Replacing Inverter’s Power Transistors Modules
- Part 9 Appendix
Troubleshooting for Outdoor Unit SiUS181631EA
240 Troubleshooting
7.12 Outdoor Heat Exchanger Thermistor (R4T) Abnormality
Error Code
J6
Method of Error
Detection
The temperature detected by the outdoor heat exchanger thermistor determines the error.
Error Decision
Conditions
When a short circuit or an open circuit in the outdoor heat exchanger thermistor is detected
Supposed
Causes
Disconnection of thermistor
Defective outdoor heat exchanger thermistor (R4T)
Defective main PCB (A1P)
Troubleshooting
Refer to Thermistor Resistance/Temperature Characteristics table 1 on page 267.
Is the thermistor
ASSY connected to
X12A on the main
PCB (A1P).
Is the
resistance
normal when
measured after
disconnecting the
thermistor (R4T)?
(3.5 kΩ~ 360 kΩ)
Replace the main PCB
(A1P).
(R13028)
Connect the thermistor and
turn on again.
NO
Replace the outdoor heat
exchanger thermistor
(R4T).
NO
YES
YES
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.