Gree GAA07AA-D3RNA2C

Service Manual
Technical Information
26
c) There is no SLEEP in FAN MODE
d) Mode switchover will cancel the sleep function at the time of sleep mode setting.
3.3 Auto Fan
a) Auto fan speed in heating mode
T
abm.
≤T
preset
-4 °F (2 °C) high speed
T
preset
-4 °F (2 °C) <T
abm.
<T
preset
medium speed
T
abm.
≥T
preset
low speed
b) Auto fan speed in cooling mode
T
abm.
≥T
preset
+4°F (2 °C) high speed
T
preset
<T
abm.
<T
preset
+4°F (2 °C) medium speed
T
abm.
≤T
preset
low speed
c) It’s the same in energy saving mode and cooling mode.
d) There is no auto fan control in fan mode. If the previous working model is auto fan transmit mode, the fan mode will run at high fan
when it turns to the fan mode at the rst time.
3.4 Timer Function
a) Timer ON can be set under off state of unit and the time setting range is 0.5h 24h. When timer ON is reached, the system will run
under previous setting mode.
b) Timer OFF can be set under on state of unit and the time setting range is 0.5h 24h. When time OFF is reached, the system will be
stopped.
Before timing 10 hours, timing scale is 0.5, after 10 hours, timing scale is 1. Using F code remote controller for timing, it will display
adown for each 0.5 hours when it above 10 hours, and time regards to remote controller setting time. If 10.5 hours display 10, timing
time is 10.5.
3.5 Memory Function
The system can memorize the running status set prior to power failure, so it can automatically run according to the setting running
status upon it’s re-energization. When the unit is ON before de-energization, the compressor will be 3 min delayed for protection
upon it’s re-energized.
3.6 LED,Dual 8 Nixietube
a) In cooling mode, the cooling LED is bright and dual”8” Nixietube displays the setting temperature.
b) In fan mode, the fan LED is bright and dual”8” Nixietube displays the ambient temperature.
c) In energy saving mode, the energy saving LED is bright and dual”8” Nixietube displays the setting temperature.
d) In Heating mode, the heating LED is bright and dual”8” Nixietube displays the setting temperature.
e) When wind speed is at low, medium and high, the LED of low, medium and high will be bright respectively. When it’s in auto wind,
the auto wind LED will be bright.
f) The timer LED will be bright under time setting.
h)The SET LED will bright under time setting status.
3.7 Temp. Setting
a) Your desired temperature can be set by the “UP/DOWN” button and the setting temperature will be displayed on the dual “8”
Nixietube;
b) The Dual “8” Nixietube can display Centigrade and Fahrenheit and they can be switchced by pressing UP and DOWN buttons at
the same time for 3s.
3.8 Button Function Setting
a) ON/OFF is used to switch on or off the system. Under OFF status, press the ON/OFF to switch on the system; Under ON status,
press ON/OFF to switch off the system.
b) FAN SPEED is used to adjust the fan speed.
c) UP/DOWM is used for the increase and decrease of temperature and time setting.
Before timing 10 hours, timing scale is 0.5, after 10 hours, timing scale is 1. Using F code remote controller for timing, it will display
adown for each 0.5 hours when it above 10 hours, and time regards to remote controller setting time. If 10.5 hours display 10, timing
time is 10.5. Setting high, middle, low, auto fan speed and light related LED.
d) “MODE” button is used for mode switchover regarding heat-pump unit : cooling mode, energy mode, swing mode, heating mode
and FAN, ENERGY SAVE, COOL, HEAT, FAN cycle. Cooling only unit doesn’t receive signal of “HEAT” , there are FAN, ENERGY
SAVE, COOL, FAN cycle and cooling mode, energy mode, swing mode.