Si04-115
General Functionality
Main Function
33
1.12
Automatic Operation
The unit automatically switches the operation mode to cooling or heating to maintain the room
temperature at the main unit setting temperature.
Detailed
explanation of the
function
1. Remote controller setting temperature is set as automatic cooling / heating setting
temperature (18 to 30°C).
2. Main unit setting temperature equals remote controller setting temperature plus correction
value (correction value / cooling: 0 deg, heating: 2 deg.).
3. Operation ON / OFF point and mode switching point are as follows.
���
Heating
→
Cooling switching point: Room temperature
≥
Main unit setting temperature
+2.5 deg.
���
Cooling
→
Heating switching point: Room temperature < Main unit setting temperature –
2.5 deg.
���
Thermostat ON / OFF point is the same as the ON / OFF point of cooling or heating
operation.
4. During initial operation
Room temperature
≥
Remote controller setting temperature: Cooling operation
Room temperature < Remote controller setting temperature: Heating operation
However, in the automatic Powerful cooling/heating mode, the guard timer is set as follows to
prevent hunting in cooling / heating mode.
Heating /
cooling switching point
2.5 deg.
or higher
(Heating thermostat
OFF point)
Main unit setting
temperature
(Cooling thermostat
OFF point)
Cooling /
heating switching point
Cooling
operation
Heating
operation
Cooling
operation
With compressor capacity supplied
With no compressor capacity supplied
(1.5 deg.)
or higher
Less than
(1.5 deg.)
2.5 deg.
or higher
(R1918)
