Gree KFR-32GW/NA21, Service Manual

Page: 43 / 131

7 7 7 7 7
PCB function manual and operation method
PCB function manual 1
Temperature parameter
The room set temperature: (Tset)
The room ambient temperature:(Tamb)
The evaporator tube temperature: (Ttube)
The condenser tube temperature: (Tdefrost)
Foundamental functions
After power is on, no matter when compressor is started, the time span between the startups cannot be less than 3 minutes.
COOL mode
Cooling condition
Antifreezing Protection
When the system is tested, the compressor and outdoor fan will stop, indoor fan will run at the set speed; when the antifreezing protection is
and the compressor has stopped for 3min, the unit will return to the old mode.
Overcurrent Portection
Protection Functions
When the system current is tested higher than 13A, only fan will run. After 3 minutes, the whole unit will run in the old
mode, if the overcurrent cannot be eliminated, the whole unit will stop, and can be restarted by the wireless remote control.
In this mode, the reversal valve will not power on, the setting temp. range:16
℃
~30
℃
If Tamb
≥
Tset+1
℃
, COOL mode will act, compressor and outdoor fan will run, indoor fan will run at the set speed.
If Tamb
≤
Tset
－
1
℃
,tunit will stop , compressor will stop and then outdoor fan will delay 15sec and stop.
If Tset-1
℃＜
Ta mb
＜
T set+1
℃
, the unit will keep running in the old mode.
Bird Single-Split Type
This function manual is firt for the ordinary Bird and Plastic Case Single Split Type series