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
Protection Control SiUS181631EA
66 Functions and Control
4.6 Dew Condensation Prevention Control
Outline According to the dew condensation prevention status sent from the BP unit, the compressor output
frequency is regulated to decrease compressor capacity in order to prevent the indoor unit from
dew condensation.
Details Zones are divided based on the dew condensation prevention status signal sent from the BP unit
(indoor unit), and the dew condensation prevention control prevents dew condensation of the
indoor unit.
Recovery zone: Lift the control
Increase zone: 1 step up / 60 sec.
Keep zone: Frequency is not controlled
Decrease zone: 1 step down / 60 sec.
The temperature in the above figure depends on the model and actual room temperature
(reference value).
˚C
14.5
13.0
12.5
12.0
Recovery zone
Increase zone
Keep zone
Decrease zone
(R19086)
Indoor heat exchanger
temperature
˚F
58.1
55.4
54.5
53.6