Program Dry Operation - Daikin 2MXS40H2V1B Service Manual

SiBE121123_A
1.7

Program Dry Operation

Outline Program dry operation removes humidity while preventing the room temperature from lowering.
Since the microcomputer controls both the temperature and airflow rate, the temperature
adjustment and [FAN] adjustment buttons are inoperable.
Detail The microcomputer automatically sets the temperature and airflow rate. The difference between
the room thermistor temperature at start-up and the target temperature is divided into two
zones. Then, the unit operates with an appropriate capacity for each zone to maintain the
temperature and humidity at a comfortable level.
temperature at start-up
Function and Control
Room thermistor Target temperature
24°C or more
Room thermistor
temperature at start-up
23.5°C
18°C
17.5°C
Zone C = Thermostat ON
Zone B
Y
Zone A = Thermostat OFF
Thermostat OFF point
X
–
X
–
X
–
18°C X
Zone B
Function of RA Indoor Unit
Thermostat ON point
Y Z
–
X 0.5°C
or
2.5°C
Y + 0.5°C (zone B)
continues for 10 min.
–
X 0.5°C
or
2.0°C
Y + 0.5°C (zone B)
continues for 10 min.
–
X 0.5°C = 17.5°C
or
2.0°C
Y + 0.5°C (zone B)
continues for 10 min.
X
Z
+0.5ºC
(R11581)
62