MXS Service Manual

SiUS121736EA RA Indoor Unit Functions
Functions and Control 72
2.14 Other Functions
2.14.1 Hot-Start Function
In order to prevent the cold air blast that normally occurs when heating operation starts, the
temperature of the indoor heat exchanger is detected, and the airflow is either stopped or
significantly weakened resulting in comfortable heating.
Note: The cold air blast is prevented using similar control when defrost control starts or when the
thermostat is turned ON.
2.14.2 Signal Receiving Sign
When the indoor unit receives a signal from the remote controller, the unit emits a signal receiving
sound and the operation lamp blinks.
2.14.3 Indoor Unit ON/OFF Button
ON/OFF button is provided on the display of the unit.
 Press ON/OFF button once to start operation. Press once again to stop it.
 ON/OFF button is useful when the remote controller is missing or the battery has run out.
 In the case of multi system operation, there are times when the unit does not activate with this
button.
CTXG, FTXR Series
Operation mode Temperature setting Airflow rate
AUTO 25°C (77°F) Automatic
CTXS/FTXS Series CDXS/FDXS Series
(R23923)
ON/OFF button
(R23924)
ON/OFF button
(R23925)
ON/OFF button