Function of CTXS, FTXS, CDXS, FDXS Series SiUS181305E81 Function7.14 Other Functions7.14.1 Hot-Start FunctionIn order to prevent the cold air blast that normally comes when heating operation is started, thetemperature of the indoor heat exchanger is detected, and the airflow is either stopped or madevery weak thereby carrying out comfortable heating of the room.*The cold air blast is also prevented using similar control when the defrosting operation is started orwhen the thermostat is turned ON.7.14.2 Signal Receiving SignWhen the indoor unit receives a signal from the remote controller, the unit emits a signal receivingsound.7.14.3 Indoor Unit ON/OFF ButtonAn ON/OFF button is provided on the display of the unit. Press the ON/OFF button once to start operation. Press once again to stop it. The ON/OFF button is useful when the remote controller is missing or the battery has run out. The operation mode refers to the following table. In the case of multi system operation, there are times when the unit does not activate with theON/OFF button.Ex: CTXS-L, FTXS-L series7.14.4 Air-Purifying Filter with Photocatalytic Deodorizing FunctionCTXS-J, CTXS-H SeriesThis filter incorporates the benefits the Air-Purifying Filter and Photocatalytic Deodorizing Filter in asingle unit. Combining the two filters in this way increases the active surface area of the new filter.This larger surface area allows the filter to effectively trap microscopic particles, decompose odorsand deactivate bacteria and viruses even for the large living rooms. The filter can be used forapproximately 3 years if periodic maintenance is performed.7.14.5 Titanium Apatite Photocatalytic Air-Purifying FilterCTXS-L, FTXS-L SeriesThis filter combines the Air-Purifying Filter and Titanium Apatite Photocatalytic Deodorizing Filter asa single highly effective filter. The filter traps microscopic particles, decomposes odors and evendeactivates bacteria and viruses. It lasts for 3 years without replacement if washed about onceevery 6 months.7.14.6 Auto-restart FunctionIf a power failure (including one for just a moment) occurs during the operation, the operationautomatically restarts when the power is restored in the same condition as before the power failure.Note: It takes 3 minutes to restart the operation because the 3-minute standby function is activated.Operation mode Temperature setting Airflow rateAUTO 25°C (77°F) AutomaticON/OFF button (R13555)