Program Dry Function - Daikin CTXS09GVJU Service Manual

Main Functions
1.4

Program Dry Function

Program dry function removes humidity without lowering the room temperature. Since the
microcomputer controls both the temperature and airflow volume, the temperature adjustment and
fan adjustment buttons are inoperable in this mode.
In Case of
The microcomputer automatically sets the temperature and fan settings. The difference between
the room temperature at startup and the temperature set by the microcomputer is divided into two
Inverter Units
zones. The unit operates in the dry mode with an appropriate capacity for each zone to maintain the
temperature and humidity at a comfortable level.
Room temperature at
28
Set temperature
startup X
Room temperature at
startup
75ºF or more
74ºF
64ºF
64ºF
63ºF
Zone B
Y
Zone A = Thermostat OFF
Thermostat OFF point
Y
X
X
X
Zone C = Thermostat ON
Thermostat ON point
Z
– Δ
X
– Δ
4.5ºF
Δ
Y + 0.9ºF (zone B)
continues for 10 min.
– Δ
X
– Δ
3.6ºF
Δ
Y + 0.9ºF (zone B)
continues for 10 min.
– Δ
X 0.9ºF = 63ºF
– Δ
3.6ºF
Δ
Y + 0.9ºF (zone B)
continues for 10 min.
Z
Zone B
+ Δ0.9ºF
(R6972)
Function and Control
SiUS12-814
0.9ºF
or
0.9ºF
or
or