Gree Fengyun Series - Page 37

Fengyun Series
6.1.2.3 Heating Mode
When T am
b.
≤T
preset +2
, the unit will run under heating mode,
in
℃ which case the reversal valve, compressor and outdoor
fan will be started
simultaneously, while the indoor fan will run after 2minutes (max) delay .
6.1.2.3.1 Heating Conditions and Process
If T
amb.
≥T
preset +
4 , the compressor and outdoor fan will be stopped, the reversal℃ valve will remain energized and the
indoor fan will run at preset speed for 60s and then will stop.
When T
preset +2
<T℃
amb.
< T
preset +
4 , the unit will maintain its original operating status.℃
 Under this mode, the reversal valve will be energized and the temperature can be set from 16 to 30℃.
T
preset
T
preset
Stop heating
Original operating status.
Stop
Run
Tamb
Start heating
Compressor
Outdoor fan
Indoor fan
reversal valve
3min.
6min.
6min.
2min.
2min.
preset
speed
preset
speed
6.1.2.3.2 Defrosting Conditions and Process
When the condenser is detected to have frost, the system will enter into defrosting status, in which case the outdoor fan,
4-way valve and indoor fan will be stopped and the heating indicator will blink. When it is detected that the frost in
condenser is completely eliminated, the outdoor fan and 4-way valve will be started, the indoor fan will be started at most


6.1.2.3.3 The preventive liquid splash protection for the 4-way valve
If the unit is switched off under heating mode or switched from heating mode to another mode, the 4-way valve will be
de-energized 2 minutes after the compressor is stopped.
6.1.2.4 Fan Mode
Under FAN mode, the indoor fan runs at preset speed.
Auto Speed
Low Speed
Middle Speed
Hige Speed
The temperature can be set within a range from 16 to 30℃.The initial value is 25 .
6.1.2.5 Auto Mode
Under this mode, the system will automatically select its run mode (cooling, fan, heating ) with the change of
ambient temperature. For protection function, same as under cooling or heating mode.
Under Auto mode, if the unit is switched from heating mode to another mode, the reversal valve will be de-energized
after 2 mins delay.(cooling only unit has not heating mode)
6.1.3 Other Control
6.1.3.1 Sleep Function
Setting SLEEP function under COOL or DEHUMIDIFY mode, the preset temperature will automatically rise by 1 after 1 ℃
hour and rise by another 1 after 2 hours. Preset temperature will rise by 2 in total within 2 hours. After that, the unit will ℃℃
run at this preset temperature.
Tset
Tset
Tset
Setting temp. Tset
1Hr.
2Hrs.
2Hrs. above
1Hr. 2Hrs.
2Hrs. above
Tset
Tset
Tset
Setting temp. Tset
Setting SLEEP function under HEAT mode, the preset
temperature will automatically decrease by 1 after 1
hour and decrease by another 1 after 2 hours.Preset
℃
temperature will decrease by 2 in total within 2
hours. After that, the unit will run at this preset temperature.
℃
℃
No sleep function under FAN or AUTO mode.