Main Functions SiUS12-928_B
49 Function and Control
1.13 Other Functions
1.13.1 Hot-Start Function
In order to prevent the cold air blast that normally comes when heating operation is started, the
temperature of the indoor heat exchanger is detected, and the airflow is either stopped or made
very 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 or
when the thermostat is turned ON.
1.13.2 Signal Receiving Sign
When the indoor unit receives a signal from the remote controller, the unit emits a signal receiving
sound.
1.13.3 Indoor Unit [ON/OFF] Button
An [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 the
[ON/OFF] button.
Ex: CTXS/FTXS-L series
1.13.4 Air-Purifying Filter with Photocatalytic Deodorizing Function
CTXS-J, CTXS/FTXS-H Series
This filter incorporates the benefits the Air-Purifying Filter and Photocatalytic Deodorizing Filter in a
single 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 odors
and deactivate bacteria and viruses even for the large living rooms. The filter can be used for
approximately 3 years if periodic maintenance is performed.
1.13.5 Titanium Apatite Photocatalytic Air-Purifying Filter
CTXS/FTXS-L Series
This filter combines the Air-Purifying Filter and Titanium Apatite Photocatalytic Deodorizing Filter as
a single highly effective filter. The filter traps microscopic particles, decomposes odors and even
deactivates bacteria and viruses. It lasts for 3 years without replacement if washed about once
every 6 months.
Operation mode Temperature setting Airflow rate
AUTO 25°C (77°F) Automatic
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