Program Dry Operation - Daikin FTXS20K2V1B Service Manual

SiBE041134
1.5

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] setting 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 in 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
24ºC or more
Room thermistor
temperature at start-up
23.5ºC
18ºC
17.5ºC
Zone C = Thermostat ON
Zone B
Y
Zone A = Thermostat OFF
Thermostat OFF point
X
–
X
–
X
18ºC X –
Zone B
Main Functions
Thermostat ON point
Y Z
–
X 0.5ºC
or
2.5ºC
Y + 0.5ºC (zone B)
continues for 10 min.
X – 0.5ºC
or
2.0ºC
Y + 0.5ºC (zone B)
continues for 10 min.
X – 0.5ºC = 17.5ºC
or
2.0ºC
Y + 0.5ºC (zone B)
continues for 10 min.
X
Z
+0.5ºC
(R11581)
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