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
Introduction SiUS181631EA
ix
1.2 Icons Used
The following icons are used to attract the attention of the reader to specific information.
1.3 Legends
Ta Outdoor temperature
Tb Outdoor heat exchanger temperature
Tc High pressure equivalent saturation temperature
Tdi Discharge pipe temperature
Te Low pressure equivalent saturation temperature
Tfin Radiation fin temperature
Tl Liquid pipe temperature
Tp Value of compressor port temperature calculated by Tc and Te, and suction superheated
degree
Tr Room thermistor temperature
Ts Set temperature
Ts1 Suction pipe temperature 1
Ts2 Suction pipe temperature 2
Tsh Subcooling heat exchanger gas pipe temperature
Tt Target temperature
HTdi Value of discharge pipe temperature (Tdi) compensated with outdoor temperature
SC Difference between the heat exchanger temperature and liquid pipe temperature of each
indoor unit
SH Difference between the heat exchanger temperature and gas pipe temperature of each
indoor unit
Pc High pressure sensor detection value
Pe Low pressure sensor detection value
Icon Type of
Information
Description
Warning
Warning A Warning is used when there is danger of personal injury.
Caution
Caution A Caution is used when there is danger that the reader, through
incorrect manipulation, may damage equipment, lose data, get
an unexpected result or have to restart (part of) a procedure.
Note:
Note A Note provides information that is not indispensable, but may
nevertheless be valuable to the reader, such as tips and tricks.
Reference A Reference guides the reader to other places in this binder or
in this manual, where he/she will find additional information on a
specific topic.