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
SiUS181631EA FFQ Series Function
Functions and Control 107
8.7 Setback Function (With Wired Remote Controller
BRC1E73)
The Setback function can be used to maintain the space temperature in an assigned range for an
unoccupied period.
The setback icon flashes on the LCD of wired remote controller when the unit is turned on by the
setback control.
When enabled, the Setback mode becomes active when the indoor unit is turned off by either
the user, a schedule event or an off timer.
Setback function is not available by default. It can be enabled by the system installer.
8.8 Drain Pump Control
8.8.1 Normal Operation
The float switch is ON in normal operation.
When cooling operation starts (thermostat ON), the drain pump turns ON simultaneously.
After the thermostat turns OFF, the drain pump continues to operate.
Float switch
Error display
Thermostat
(running)
OFF
OFF
ON
ON
ON
OFF
Drain pump
ON
OFF
(R24037)