Gree JKFD5QSR/Na-E User manual

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Service Manual
Models: JKFD5QSR/Na-E、JKFD5CR/Na-E
JKFD7QSR/Na-M、JKFD7CR/Na-M
JKFD15QSR/Na-M、JKFD15CR/Na-M
JKFD20QSR/Na-M、JKFD20CR/Na-M
JKFD25QS2/Na-M、JKFD25C2/Na-M、JKFD25SX2/Na-M
JKFD40QS2/Na-M、JKFD40C2/Na-M、JKFD40SX2/Na-M
(Refrigerant R410A)
GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

GREE Air-ccoled Closed Control Unit Service Manual
Table of Contents
ⅠProduct..........................................................................................................1
1. Naming Convention of Products.................................................................................................... 2
2. Features of Product ........................................................................................................................ 3
3. System Principle ............................................................................................................................ 5
3.1 Flowchart of the System .................................................................................................. 5
3.2 Description of the System................................................................................................ 5
4. Performance Parameters................................................................................................................. 6
5. RFORMANCE CORRECTION .................................................................................................. 13
5.1 Correction of Cooling Capacity ..................................................................................... 13
5.2 Coefficient of Correction Table for Various Conditions of Installation ..................... 14
6. Installation of the unit .................................................................................................................. 16
6.1 Installation Diagram of the Complete Unit .................................................................. 16
6.2 Outline Dimension of the Unit ....................................................................................... 16
6.3 Installation Dimension and Space ................................................................................ 23
6.4 Requirements of Installation.......................................................................................... 28
7. Electric installation ...................................................................................................................... 33
7.1 Electrical Installation....................................................................................................... 33
7.2 Matching Form of Power Cord and Air Switch............................................................ 37
ⅡControl.......................................................................................................39
1 Control of the Unit........................................................................................................................ 39
1.1 General Control............................................................................................................... 39
1.2 Introduction to Key Control Logic of the Unit .............................................................. 41
2. Controller..................................................................................................................................... 42
2.1 Homepage........................................................................................................................ 42
2.2 User Setting Interface .................................................................................................... 44
2.4 Running Status Interface ............................................................................................... 48
2.5 Event Log ......................................................................................................................... 51
2.6 Parameter Setting........................................................................................................... 52
2.7 System Information......................................................................................................... 55
2.8 Touch Screen Caring, Humidifier Maintenance and Installation Notice.................. 59
3. The Instruction of DIP Switch...................................................................................................... 61
3.1 Address Code.................................................................................................................. 61
3.2 Capacity Code................................................................................................................. 62
4. Remote Monitoring...................................................................................................................... 63
4.1 Installation ........................................................................................................................ 63
4.2 Operation ......................................................................................................................... 65
4.3 Display interface.............................................................................................................. 75
4.4 Unit and equipment management ................................................................................ 77
4.5 Parameter control ........................................................................................................... 81
4.6 Running parameter view................................................................................................ 84
4.7 User and role management........................................................................................... 85
4.8 Others ............................................................................................................................... 87

GREE Air-ccoled Closed Control Unit Service Manual
ⅢMaintenance.............................................................................................88
1.Malfunction List....................................................................................................................... 88
2. Troubleshooting ........................................................................................................................... 93
2.1 High Pressure Protection of Compressor.................................................................... 93
2.2 Low Pressure Protection of Compressor .................................................................... 94
2.3 Discharge Temp Protection for Compressor............................................................... 95
2.4 Overload Protection of Compressor............................................................................. 95
2.5 Overload Protection of Indoor Fan ............................................................................... 96
2.6 Temperature Protection of Electric Heater .................................................................. 96
2.7 Low Current Malfunction, Drainage Malfunction and High Water Level Malfunction
of Humidifier ........................................................................................................................... 97
2.8 Low Air Pressure Malfunction of Indoor Fan............................................................... 98
2.9 Alarm for Blocking Filter ................................................................................................. 99
3. Case Study.................................................................................................................................. 100
4. Power Distribution of the Unit................................................................................................... 103
4.1 Power Distribution Diagram......................................................................................... 103
4.2 Circuit Diagram (The circuit diagram is for reference only and the circuit diagram
on the unit is the standard.) ............................................................................................... 105
4.3 Introduction for Main Electric Parts ............................................................................ 114
5. Disassembly and Assembly of the Unit...................................................................................... 116
5.1 Introduction to Key Parts ............................................................................................. 116
5.2 Assembly and Disassembly of Parts.......................................................................... 118
6. Exploded View and Parts List.................................................................................................... 120

GREE Air-ccoled Closed Control Unit Service Manual
1
ⅠProduct
Indoor Unit
Outdoor Unit

GREE Air-ccoled Closed Control Unit Service Manual
2
1. Naming Convention of Products
JK F D 40 QS □2 □ □ / □- M (I)
12345 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