Panasonic U-20ME1E81, Service Manual

Page: 61 / 177

2 - 7
2WAY SYSTEM
Control Functions - Indoor Unit
2
6. Automatic Heating/Cooling Control
6. Automatic Heating/Cooling Control
①
The operating mode is selected according to the set temperature and room temperature when the
operation is started.
Room temperature > set temperature in remote controller – 1˚C
→
Cooling mode
Room temperature < set temperature in remote controller – 1˚C
→
Heating mode
②
The set temperature is corrected according to the operating mode. The correction temperature is +2
degrees in cooling mode and -2 degrees in heating mode at the time of factory shipment.
The correction value is different depending on the model. Refer to “15. Parameter” for details.
Corrected cooling temperature – control temperature for cooling
Corrected heating temperature – control temperature for heating
When setting temperature in remote controller is 20˚C in the cooling mode (at shipment) :
Control temp. for cooling 22˚C
Set temp. in remote controller 20˚C
Control temp. for heating 18˚C
③
Condition for mode change
Heating
→
Cooling: Room temperature > Control temperature for c 0.5 degree
Cooling
→
Heating: Room temperature < Control temperature for heating -1.0 degree
When setting temperature in remote controller is 20˚C in the cooling mode :
Heating Heating thermostat OFF Cooling Cooling thermostat OFF Heating
continues for 10
minutes regardless
of temp. condition.
Then, the mode
changes to cooling.
The heating
thermostat OFF
continues for 10
minutes regardless
of temp. condition.
Then, the mode
changes to heating.
The cooling
thermostat OFF
Set temp. in remote controller
Control temp. for cooling +2deg
Control temp. for heating
+2.5deg Temp. for switching to cooling
Temp. for switching to heating
-2deg
-3deg
Heating thermostat OFF temp. -1deg
Cooling thermostat OFF temp. +1deg
For settings at the time of factory shipment, refer to “15. Parameter”.
This function is only valid as long as one indoor unit is installed within one refrigerant system or all indoor
units are controlled within a group control.
When operating in a group control, the sub-indoor units become the same operation mode of the main unit.
As for the indoor units in a group control, install them in the same air conditioning circumstances.
Use the temperature sensor which is built-in sensor of the indoor unit.
SM830204-05_2WAY SYS.indb 7 2015/01/21 17:00:34