Service manual

SiBE05-722_C Main Functions

Function and Control 35

1.12 Other Functions

1.12.1 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 defrost control starts or when

the thermostat is turned ON.

1.12.2 Signal Receiving Sign

When the indoor unit receives a signal from the remote controller, the unit emits a signal

receiving sound.

1.12.3 Indoor Unit [ON/OFF] Button

An [ON/OFF] button is provided on the display of the unit.

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Press the [ON/OFF] button once to start operation. Press once again to stop it.

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The [ON/OFF] button is useful when the remote controller is missing or the battery has run

out.

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The operation mode refers to the following table.

Forced cooling operation can be started by pressing the [ON/OFF] button for 5 to 9 seconds

while the unit is not operating.

Refer to page 110 for detail.

Note: When the [ON/OFF] button is pressed for 10 seconds or more, the forced cooling operation is

stopped.

1.12.4 Photocatalytic Deodorizing Filter

The photocatalytic deodorizing filter powerfully decomposes odor of tobacco, pet, etc. The

deodorizing power is regenerated simply by being exposed to the sunshine. It is recommended

to dry the filter in the sun for about 6 hours (after vacuuming the filter) every 6 months.

1.12.5 Air-Purifying Filter

The air-purifying filter collects tobacco smoke, pollen, etc. with electrostatic agency.

This filter includes a deodorizing active carbon filter that removes minute particles of odor.

Replace the air-purifying filter every 3 months.

1.12.6 Auto-restart Function

If a power failure (including one for just a moment) occurs during the operation, the operation

restarts automatically 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 rate

Cooling Only COOL 22ºC Automatic

Heat Pump AUTO 25ºC Automatic

[ON/OFF] button

(R18370)