GREE Air-ccoled Closed Control Unit Service Manual 
 
2
1. Naming Convention of Products 
JK F  D  40 QS 
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2 
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- M (I)
1  2  3  4  5 6  7 8 9   10  11 12 
 
 
NO. Description  Option 
1  Product Classification  JK-Closed Control Air Conditioner 
2  Cooling Method and Structure 
Omitted—Water-cooled Packaged Unit 
F—Air-cooled Split Unit 
Y—Ethylene Glycol-cooled Split Unit 
C—Chilled Water Unit 
3 Unit Type 
Omitted—Cooling Only Unit (without electric heater) 
D—Cooling Only Unit +Electric Heater 
Z—Cooling Only Unit+ Refrigerant plus Heater 
4  Cooling Capacity  Nominal Cooling Capacity--number (kW) 
5 
Direction of Air Intake and 
Discharge 
C—Direct Air Supply (with air cap) 
SX—Top Air Intake and Bottom Air Discharge (air 
supplied from floor) 
QS—Front Air Intake and Top Air Discharge (air duct 
is connected) 
6 Structure Type 
Omitted—Compressor Indoors 
W—Compressor Outdoors 
7 
Number of System 
Combination 
Omitted—One System 
2—Two Systems 
8 Humidifier 
Omitted—Standard Electrode Humidifier 
R—Infrareded Humidifier 
N—Without Humidifier 
9 Compressor Type 
Omitted—Fixed frequency 
P—AC Inverter 
Pd—DC Inverter 
10 Refrigerant 
Omitted—R22 
N—R407c 
Na—R410A 
11 Power SupplyType 
M—380V 3N~ 50Hz 
E—220V  ~ 50Hz  
12 
Codes of Indoor and Outdoor 
Units 
Omitted—Complete Unit and Integral Type 
I—Indoor Units 
O—Outdoor Units