Gree Bright Series

When T
preset
-2 ≤T℃
amb.
≤T
preset +
2 , the unit will run under dehumidifying mode, in which case the indoor fan will keep ℃
run at low speed, while the compressor and outdoor fan will run 6 minutes and stop 4 minutes so repeated in cycle.
When T
amb
.< T
preset
-2℃, the compressor and outdoor fan will be stopped and the indoor fan will run at low speed.
 Under this mode, the reversal valve will be de-energized and the temperature can be set within a range from 16 to
30℃.
T
preset
+2℃
T
preset
-2℃
T
amb
Compressor
Outdoor fan
Indoor fan
Cooling
Dehumidifying
Stop
6 min. 6 min.
4 min.
4 min.
low speed
Run Stop
6.1.2.2.2 Protection
 Antifreeze Protection
Under dehumidifying and cooling mode, if it is detected that the system is under antifreeze protection, the compressor
and outdoor fan will be stopped,and the indoor fan will run at low speed. When antifreeze protection is released and
the compressor has stopped for 3 minutes, the complete unit will resume its original operating status.
During antifreeze protection
3 min.
Compressor
Outdoor fan
Indoor fan
Run Stop
low speed
 Overcurrent Protection is the same as that under cooling mode
6.1.2.3 Heating Mode
6.1.2.3.1 Working Conditions and Process of Heating
When T
amb.
≤T
preset
+2 , the unit will run under heating mode, in which case the reversal valve, compressor and ℃
outdoor fan will be simultaneously started, and the indoor fan will be started after 2 minutes the latest.
If T
amb.
≥T
preset
+4 , the compressor and outdoor fan will be stopped, the reversal valve is still energized and the℃
indoor fan will run at low speed for 60 seconds before it is stopped.
When T
preset
+2 <T℃
amb.
< T
preset
+4 , the unit will maintain its original operating status.℃
 Under this mode,the temperature can be set within a range from 16 to 30 .
T
preset
+4℃
T
preset
+2℃
Compressor
Outdoor fan
Indoor fan
reversal valve
T
amb
6 min.
6 min. 3 min.
2 min.
2 min.
Run
Stop
Start heating
Original operating status
Stop heating
low
low
speed
speed
6.1.2.3.2 Protection
 High Temp. Protection
If it is detected that the evaporator tube temperature is too high, the outdoor fan will be stopped. When the tube
temperature resumes to normal, the outdoor fan will be restarted.
Upon meeting "run 6 mins and stop 4 mins" dehumidify condition, if it is detected that the system is under antifreeze pro-
tection,the compressor and outdoor fan will be stopped,and the indoor fan will run at low speed. When antifreeze protection
is released and the compressor has stopped for 4 minutes, the complete unit will resume its original operating status.
Bright Series