Gree GWH(09)MA-K3DNA2B Service Manual page 18

III. Other Control
1. Buzzer
The buzzer will give out a beep when the controller is energized, receiving signal from remote controller and auto button.
2. Auto Button
Press this button once, it will operate in Auto mode, and indoor fan operates in Auto fan mode and swing. When the unit is on,
pressing this button will turn off the unit.
3. Auto Fan
a. Auto fan speed in Heat mode
When Tamb.≤Tpreset, the indoor fan operates at high speed;
When Tpreset<Tamb.<Tpreset+2 , the indoor fan operates at middle speed;
When Tamb≥Tpreset+2
b. Auto fan speed in CooL and Fan mode
When Tamb≥Tpreset+3
When Tpreset<Tamb.<Tpreset+3 , the indoor fan operates at middle speed;
When Tamb.≤Tpreset+1 , the indoor fan operates at low speed.
c. The auto fan speed is at low speed in Dry mode.
Note: Under auto fan speed, it will shift between high speed and middle speed, middle speed and low speed, high speed
and low speed, the operation time must be 3.5min at least.
4. Sleep
4.1 The unit will select suitable sleep curve according to set temperature.
4.2 Sleep curve in Heat mode
4.3 Sleep curve in Cool mode
5. Timer Function
(1) General Timer:
1.1 Time On: if Timer On is set when the system is,the controller will operate in the original setting mode after reaching the
timer on time. The timer interval is 0.5h, and the setting range is 0.5-24h.
1.2 Timer Off: Timer Off can be set when the unit is on. The unit will be off when timer off time is reahced. The timer
interval is 0.5h, and the setting range is 0.5-24h.
(2) Clock Timer:
2.1 Timer On: If Timer On is set when the system runs, it will continue to run; if Timer On is set when the system is off, the
system will start to run in the original setting mode when timer on time is reached.
2.2 Timer Off: If timer off is set when the system is off, the system keeps stand-by status; if timer off is set when the system
is on, the system stops when reaching timer off time.
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the indoor fan operates at low speed.
the indoor fan operates at high speed;
Tset+1
Tset
1H
Tset
1H
Tset+2
2H 3H
Tset-1
2H 3H
Tset+3
4H
Tset-2
Tset-3
4H
Function and Control