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65
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'21 • KX-T-380
(b) In case of without humidity sensor
Return air temperature sensor [Thi-A (by the remote control when the remote control temperature sensor is enabled)]
controls the indoor temperature environment simultaneously.
(i) Operation is started in the cooling mode. When the difference between the return air temperature and the setting
temperature is 2°C or less, the indoor fan tap is brought down by one tap. That tap is retained for 3 minutes after
changing the indoor fan tap.
(ii) If the return air temperature exceeds the setting temperature by 3°C during dehumidifying operation, the indoor fan
tap is raised by one tap. That tap is retained for 3 minutes after changing the indoor fan tap.
(iii) If the thermostat OFF is established during the above control, the indoor fan tap at the thermostat ON is retained so far
as the thermostat is turned OFF.
(3) Timer operation
(a) RC-EX3A
(i) Sleep timer
Set the time from the start to stop of operation. The time can be selected in the range from 30 to 240 minutes (in the
unit of 10-minute).
Note (1) Enable the “Sleep timer” setting from the remote control. If the setting is enabled, the timer operates at every time.
(ii) Set OFF timer by hour
Set the time to stop the unit after operation, in the range from 1 to 12 hours (in the unit of hour).
(iii) Set ON timer by hour
Set the time to start the unit after the stop of operation, in the range from 1 to 12 hours (in the unit of hour). It is
allowed also to set simultaneously the indoor temperature, operation mode, air flow rate and warm-up enabled/
disabled.
(iv) Set ON timer by clock
Set the time to start operation. The time can be set in the unit of 5-minute. This setting can be switched only once
or daily. It is allowed also to set simultaneously the indoor temperature, operation mode, air ow rate and warm-up
enabled/disabled.
Note (1) It is necessary to set the clock to use this timer.
(1) Operations of functional items during cooling/heating
Cooling Heating
Dehumidifying
Thermostat ON:
Thermostat OFF:Í
(2)
Fan
Operation
Functional item
Thermostat
ON
Thermostat
ON
Thermostat
OFF
Thermostat
OFF
Hot start
(Defrost)
Compressor
4-way valve
Outdoor fan
Indoor fan
Drain pump
(3)
Í
Í
Í
Í
Í
(2)
Í
Í
Í
Í
(2)
/
Í
Í
Í
/
Í
(Í)
(Í)
/
Í
/Í
Í
/Í
/Í
Notes (1) : Operation Í: Stop /Í: Turned ON/OFF by the control other than the room temperature control.
(2) ON during the drain motor delay control.
(3) Drain pump ON setting may be selected with the indoor unit function setting of the wired remote control.
/
Í
(2)
7.3 Operation control function by the indoor control
(2) Dehumidifying (DRY) operation
(a) In case of with humidity sensor
Indoor ambient temperatures and humidity are controlled simultaneously with the relative humidity sensor (HS) and the
suction temperature sensor [Thi-A (or the remote control temperature sensor when it is activated)], which are installed at the
suction inlet.
(i) When the operation has been started with cooling, if there is a difference of 2 °C or less between the suction and setting
temperatures, the tap of indoor fan is lowered by one tap. This tap is retained for 3 minutes after changing the tap.
(ii) After the above condition, when a difference between suction and setting temperature is lower than 3°C, and the relative
humidity is high, the tap of indoor fan is lowered by one tap.
When the difference between suction and setting temperature is larger than 3°C, the tap of indoor fan is raised by one
tap. This tap is retained for 3 minutes after changing the tap.
(iii) When relative humidity becomes lower, the indoor fan tap is retained.
(iv) In case of the thermostat OFF, the indoor fan tap at the thermostat ON is retained.
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