Gree HLR45SNa-M - Buzzer; Basic Operation

Household (Townhouse) Central Air Conditioning Unit
6
4.4 Buzzer
When unit is always off, buzzer will not sound under any circumstance. When unit is always on, buzzer
sounds once when electried reset and quick test. It also sounds when button is pressed and when there is key
error under unit on state. When unit is operating in anti-high temperature or antifreeze, buzzer doesn’t sounds.
4.5 Basic operation
1) Turn On: Press On once when unit is off then unit be in waiting state, and LCD displays temperature
of water back and operation mode (cooling or heating). When it detected there is terminal on, unit operates
automatically and operation mode blinks; if it detected there is no terminal on, unit turns off after delaying for
certain time, then system back to waiting state.
2) Turn Off: Press OFF once when unit is on to stop the unit from working and make it in off state. At
that time, LCD only displays temperature for back water.
3) Mode Switch: It is only available to heat pump unit, cooling only unit only contains cooling mode.
To heat pump unit, press Mode once, then system mode switches to cool from the previous heating, or to heat
from present cooling. When there is error, this button doesn’t work.
4) Check system temperature point and state: Press Check once to enter check mode. Under check
mode, Auxiliary display area shows checking object, main display area shows the value of the object. Press
▲ and ▼ to change the check object, press EXIT to quit from check mode. The content that can be check are
as follow:
0
：
Temperature for back water
1
：
Temperature for out water
2
：
Outdoor ambient temperature
3
：
Antifreeze temperature 1
4
：
Antifreeze temperature 2
5
：
Defrost temperature 1 (This temperature has no meaning to cooling only unit)
6
：
Defrost temperature 2 (This temperature has no meaning to cooling only unit)
7
：
Exhaust temperature 1
8
：
Exhaust temperature 2
9
：
Unidentied
10
：
Unidentied
11
：
Real time error code
12
：
Defrost and terminal
＝
0XH is no defrosting;
＝
FXH is defrosting;
＝
X0H means no terminal is on;
＝
XFH means there is terminal on.
13
：
Outdoor unit operation state: 0x01= Turn off unit when cooling, 0x02= Turn off unit when heating
0x11= Turn on unit when cooling, 0x12= Turn on unit when heating
0xd2= Auto antifreeze is running, 0xF1= Compel cooling, 0xF2=
Compel heating
14
：
Outdoor unit operation state
15
：
Indoor unit operation state :
0x01= Turn off unit when cooling, 0x02= Turn off unit when heating
0x11= Turn on unit when cooling, 0x12= Turn on unit when heating
0xd2= Auto antifreeze is running, 0xF1= Compel cooling, 0xF2= Compel heating
16
：
Indoor unit operation state