Main Functions DAMA-SM-21-003
26 Functions and Control
1.6 Automatic Operation
Automatic Cooling / Heating Function (Heat Pump Only)
When the AUTO mode is selected with the remote controller, the microcomputer automatically
d
etermines the operation mode from cooling and heating according to the room temperature
and setting temperature at the time of the operation startup, and automatically operates in that
mode.
The unit automatically switches the operation mode to cooling or heating to maintain the room
te
mperature at the main unit setting temperature.
Details
Explanation of
the Function
1. Remote controller setting temperature is set as automatic cooling / heating setting
temperature 16°C (60°F) to 30°C (86°F).
2. Main unit setting temperature equals remote controller setting temperature.
3. Operation ON / OFF point and mode switching point are as follows.
a Heating Cooling switc
hing point:
Room temperature
≥ Main unit setting temperature +2.5 deg (+4.5°F).
b Cooling Heating switc
hing point:
Room temperature < Main unit setting t
emperature -2.5 deg (-4.5°F)
c Thermostat ON / OFF point is the same as the ON / OFF point of coolin
g or heating
operation.
4. During initial operation
Room temperature
≥ Remote controller setting temperature: Cooling operation
Room temperature < Remote controller setting temperature: Heating operation
Ex : When the set temperature is 25°C (77°F),
Scenario 1 Thermostat OFF 23.5°C
(74.3°F). If room temperature continues to drop to
22.5°C (72.5°F) :
Switch from Cooling Operation to Heating Operation
Scenario 2 Room temperature maintains at 25°C (77°F) :
No Switch in Operation mode
Scenario 3 Thermostat OFF -> 26.5°C (79.7°F). If room temperature continues to increase to
27.5°C (81.5°F) :
Switch from Heating Operation to Cooling Operation
Cooling Operation
Set point +2.5°C (+4.5°F)
Set point +1.5°C (+2.7°F)
=Thermostat OFF
Heating Operation
Set point -1.5°C (-2.7°F)
=Thermostat OFF
Set point -2.5°C (-4.5°F)
DAMA-SM-21-003 -Inverter Multi Split-CTX Series.book Page 26 Wednesday, September 1, 2021 5:44 PM
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