Gree KFR-32GW/NJ1F, Service Manual

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2. The condition and process of defrosting
When heating time runs more than 45min continuously, defrosting condition is satisfied and the unit will enter into defrosting state.
At this time the compressor stops, the indoor fan stops, the outdoor fan will delay 30sec to stop and the four-way valve will stop after
30sec; after another 60sec
， the compressor will run. The indoor run indicator light will blink while defrosting. When the compressor
has run for 6min or Ttub
≥
10
℃
, the compressor will stop, the four-way valve will open after 30sec and the run indicator will stop
blinking. After another 90sec, the compressor and outdoor fan will resume running and the indoor fan will run in anti-cold-wind
mode.
3. The condition of anti-cold-wind mode:
After the compressor has run for 3min, the indoor fan will run at the set speed.
7.3 AUTO mode
1. The condition and process of AUTO mode
◆ Cooling Tset=25
℃，
Heating Tset=20
℃
.
◆ If T amb>Tset +1
℃
, COOL mode will act. At this time the hidden set temperature is 25
℃
. If T amb
≤
Tset -2
℃
, the compressor
and outdoor fan will stop, the indoor fan will run at the set speed; if Tset-2 ℃＜ Tamb ≤ Tset+1 ℃ , the unit will keep running in
the original mode.
◆ If Tamb
≤
Tset+2
℃
, HEAT mode will act. At this time the hidden set temperature is 20
℃
. If Tamb
≥
Tset+4
℃
, the compressor
will stop, the outdoor fan will delay 30sec to stop and the indoor fan will run at low speed; if Tset+2
℃＜
Tamb
＜
Tset+4
℃
, the unit
will keep running in the original mode.
◆
If 22 ℃＜ Tamb ＜ 26 ℃ , FAN mode will act. The displayed temperature is 23 ℃ .
2. Protection function
：
◆ In COOL mode, protection function is the same with that in COOL mode.
◆ In HEAT mode, heating, protection function is the same with that in HEAT mode.
◆
When ambient temperature changes, mode switch is in priority. There is no 6-minute delay after the compressor starts to run.
Ambient temperature Tamb
COOL mode will act
Keep running in the original state
COOL mode will stop
3min
Run
Stop
Compressor
Outdoor fan
Indoor fan
Run at the set speed
Ambient temperature Tamb
HEAT mode will stop
Keep running in original state
HEAT mode will act
3min
Run
Stop
Compressor
Outdoor fan
Indoor fan
Low speed
Low speed