1-57
(3) Back-up Switch
When the remote controller batteries become weak, or if the remote controller is lost or malfunctioning, this switch may be used to
turn the unit on and off.
(a) Operation
Push the switch once to place the unit in the automatic mode. Push it once more to turn the unit off.
(b) Details of operation
The unit will go into the automatic mode in which it automatically determines, from room temperature (as detected by
sensor), whether to go into the cooling, thermal dry or heating modes.
Function
Room temperature
Operation mode
setting
Fan speed Flap Timer switch
Cooling About 26ºC
Thermal dry About 25ºC Auto Natural flow Continuous
Heating About 25ºC
On operating in automatic operation mode by back-up switch, functions show in the above table are not altered, white, the other micro-
computer control functions remain effective.
• 40 model • 50, 56 models
ON/OFF
Back-up switch
(4) AUTOMATIC operation
(a) Determination of operation mode
S50, 56 models
The blow operation of the indoor fan is carried out at the 1st speed for 20 seconds and the room temperature is checked to
determine the operation mode automatically. (When the unit is operated by the turn-on timer, the blow operation is not
carried out.)
(b) The temperature is checked once every 30 minutes after operation start. When the judgment is different
from the previous operation mode, the operation mode is transferred. (50, 56 models only)
Room temperature
Heat Pump type
Operation
mode
Cooling only type
Room temp.<21˚C 21˚C Room temp.<26˚C
<
=
26˚C Room temp.
Heating Dry Cooling
Dry Cooling
<
=
Room temperature<21ºC 21ºC Room temperature<26ºC 26ºC Room temperature
Operation mode Heating Dry Cooling
Note (1) Operating Mode is not altered due to change of room temperature.
When intended to change operating mode, switch operation change over dial to the intended mode.
S40 model
When starting operation after more than 1 hour since operation stops
(Operation stop button ON or ON-Timer), this system operates indoor fan with Lo for 20 seconds checks room temperature
and allowing decision of operating mode automatically.
ON/OFF
Back-up switch
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