Auto Mode; Buzzer; Run Indicator; Overcurrent Protection - Gree KF-20GW/A20 Service Manual

The conditions and processes of defrosting
When detecting there is frost on the condenser,15sec delayed, indoor fan, reversing valve, outdoor fan will stop; when the
defrosting has been completed or after the unit is defrosting for 10Min, outdoor fan, reversing valve will power on;And run
in HEAT mode again, there is at least 3Min delayed, indoor fan starts running.
W

Protection function

Overcurrent protection

When the system current is continuously tested for 3Min, higher than the specified value 15A, the compressor, indoor fan will
stop running, 15sec delayed, the outdoor fan will stop. After 3Min, whole unit will run in the original mode, there is at least 3Min
delayed, the indoor fan starts to run.
Avoiding high temp.
In HEAT mode, when detecting Ttube is very high, outdoor fan will stop running; when detecting Ttube is normal, outdoor fan will
return to run.
Noise cancellation protection
When turning off the unit by "ON/OFF", the reversing valve will delay 2Min to stop running.

AUTO mode

According to the ambient temperature to select COOL or HEAT mode automatically. The protection function as
HEAT/COOL mode.
Other control

Buzzer

When PCB is power on or receives the signal from the wireless remote control, the buzzer will sound.

Run indicator

When the unit is running in COOL, HEAT or DRY mode, the corresponding indicator lights will flash. When the indicator light is
turned on the light will flash, when turned off, it will extinguish. When defrosting, the heating indicator light will flash.
Swing motor
When it is powered on, the swing motor turn to position O, and turn off the air outlet vent; When the unit is turned on, firsly turn to
position D; in swing state, the louver swings between position L and D. When the unit is turned off, will turn to position O. If it is
Tset
Tset
5Min
Compressor
Outdoor fan
Indoor fan Setting
3Min
fan speed
Reversing valve
Running
4-way valve
Compressor
Outdoor fan
Indoor fan
Running
Compressor
Outdoor fan
Indoor fan
Running
Bird Single-Split Type
Ambient
temp. Tamb
3Min
5Min
3Min
Stop
Defrosting (10 Min)
3Min
Stop
Current
3Min
3Min
Stop
Stop the heating
Keep running in the old mode
Start the heating