Daikin FTYN25DV3B ATY20DV2, Service Manual

Page: 26 / 128

SiBE01-503 Functions
Functions and Control 17
1.4 Automatic Operation
Outline When the automatic mode is selected with the remote controller, the microcomputer determines
the operation mode from cooling and heating according to the room temperature and the
setpoint.
The unit automatically switches the operation mode to cooling or heating to maintain the room
temperature.
Details of the
Control
Š
Target temperature equals setpoint plus correction value (c1
°
C, heating: –1
°
C)
Š
Mode switching point and operation ON/OFF point are as follows.
Cooling
→
Heating: Room temperature – setpoint
≤
– 2
°
C
Heating
→
Cooling: Room temperature – setpoint
≥
+ 2
°
C
Cooling thermostat ON : Room temperature – setpoint
≥
+ 2
°
C
Cooling thermostat OFF: Room temperature – setpoint
≤
+ 1
°
C
Heating thermostat ON : Room temperature – setpoint
≤
– 2
°
C
Heating thermostat OFF: Room temperature – setpoint
≥
– 1
°
C
Heating
→
Cooling
Cooling thermostat ON
+2˚C
+1˚C
0˚C
–1˚C
–2˚C
Cooling thermostat OFF
Cooling Heating Cooling
Compressor ON
Compressor OFF
(R4728)
Heating thermostat OFF
Cooling
→
Heating
Heating thermostat ON
Room temperature – setpoint