Gree 2000 Service Manual

Introduction

This technical manual describes large amount of information regarding Gree 2000 type air conditioner,

including pictures, technical parameters, explosive views, parts and components list and circuit diagrams etc.

Engineers, service staff and dealers of Gree hold that this is the most convenient way to know more about

the information of our product technology.

Summary and features ........................................................................................................................... 1

Specifications and technical parameters............................................................................................... 3

Part name ................................................................................................................................................ 4

Outline and installation dimension.....................................................................................................5-6

System schematic diagram ..................................................................................................................... 7

Electrical circuit diagram ...................................................................................................................... 7

Function manual and operation method of remote controller.......................................................8-21

Explosive view and parts and components list ..............................................................................22-30

Disassembly procedures ..................................................................................................................31-34

Care and maintenance.....................................................................................................................35-36

Installation guide..............................................................................................................................37-42

Malfunction analysis........................................................................................................................43-45

Gree 2000 Technical Service Manual

Technical Service Department, Gree Electric Appliances, Inc. Of Zhuhai

March, 2004

Table of Contents

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Summary of Contents for Gree 2000

Page 1: Table Of Contents
This technical manual describes large amount of information regarding Gree 2000 type air conditioner, including pictures, technical parameters, explosive views, parts and components list and circuit diagrams etc. Engineers, service staff and dealers of Gree hold that this is the most convenient way to know more about the information of our product technology.
Page 2: Summary And Features
1. Summary and features Models Remark...
Page 3: Specifications And Technical Parameters
2. Specifications and technical parameters...
Page 5: Part Name
3. Part name Indoor unit Air in Air out Front panel Filter Purifier filter Operation switch Electric box cover Guide louver Power plug Drainage hose Signal receiver Big handle Air outlet vent grill * When air conditioner is turned on by the wireless remote controller, the run indicator is on Wireless remote controller (green).
Page 6: Outline And Installation Dimension
4. Outline and installation dimension 4.1. Outline and installation dimension of indoor unit Air inlet hole Right piping hole flag Piping hole flag Liquid crystal display and reception window Air inlet hole Rear view Ceiling Left Right Wall mounting plate...
Page 7 4.2. Outline and installation dimension of outdoor unit Unit: mm Above 60cm Bolt Spanner...
Page 8: System Schematic Diagram
5. System schematic diagram One-way valve Filter Evaporator Cross flow fan Main capillary Auxiliary capillary Axial flow fan Condenser Electromagnetic Refrigerant flowing direction four-way valve when heating Refrigerant flowing direction Gas liquid separator Compressor when cooling When powered on, indoor and outdoor unit will start to run. When the system operates in cool mode, the compressor sucks low-temperature, low-pressure refrigerant gas from indoor evaporator, compresses it into high-temperature, high-pressure refrigerant gas and discharges it into outdoor heat exchanger.
Page 9: Electrical Circuit Diagram
6. Electrical circuit diagram These circuit diagrams are subject to change without notice. Please refer to the one supplied with the unit.
Page 10: Function Manual And Operation Method Of Remote Controller
7. Function manual and operation method of remote controller 7.1 Temperature parameters ◆ Room set temperature（T ） ◆ Room ambient temperature（T ） ◆ Outdoor ambient temperature（T ） oamb ◆ Evaporator temperature（T ） ◆ Surface temperature of heat exchanger copper pipe of outdoor unit T tub1 ◆...
Page 11 Ambient temperature Tamb Set temperature Tset COOL mode will act DRY mode will act Tset -2℃ COOL mode will stop Compressor Outdoor fan Low speed Low speed Low speed Indoor fan Stop 2 Antifreezing protection: the same with that in COOL mode. 7.2.3 FAN mode The control condition of AUTO fan speed: ◆...
Page 12 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;...
Page 13 7.4 Common protection function and malfunction display of COOL, HEAT, DRY and AUTO mode 1. Overload protection: : Measure the temperature of outdoor heat exchanger when cooling and measure the temperature of indoor heat exchanger when heating ◆ When tube temperature exceeds a certain specified value, the indoor fan will run at the set speed and the compressor will stop running.
Page 14 ◆ In FAN and AUTO mode, the set temperature is fixed. 3. Indoor fan control Indoor fan can be set in HIGH, MED and LOW mode with button. At this time, the fan will run at high, medium and low speed respectively.
Page 15 7.6 Names and functions of each button of wireless remote controller NOTE: Make sure that there are no obstructions between the receiver and wireless remote control. The wireless remote control signal can be received at the distance of up to about 10m. Do not drop or throw the wireless remote control.
Page 16 7.7 Names and functions of each button of wireless remote control (Cover opened) NOTE: ● This wireless remote control is a type of general-purpose controller, which may be applied to multiple types (functions) of air conditioners. Some buttons of this controller that are not applicable to this air conditioner will not be described below.
Page 17 7.8 COOL mode operation ● According to room temperature, set temperature and the change rate of room temperature, microcomputer of the remote controller will be able to control the output cooling capacity of the outdoor compressor. ● If room temperature is equal to or slightly higher than the set temperature, the compressor will run. If room temperature is 2.5 ℃...
Page 18 7.9 HEAT mode operation ● According to room temperature, set temperature and the change rate of room temperature, microcomputer of the remote controller will be able to control the output heating capacity of the outdoor compressor. ● If room temperature is equal to or slightly lower than the set temperature, the compressor will run. If set temperature is 2.5℃ higher than the room temperature, the compressor will run at its max.
Page 19 7.10 DRY mode operation ● If room temperature is higher than the set temperature, the compressor will run at the fixed frequency and the indoor fan will run at low speed. If room temperature is 2℃ lower than the set temperature, the compressor will stop, the outdoor fan will stop after 30sec and the indoor fan will stop immediately and start running at low speed after 5min.
Page 20 7.11 AUTO mode operation ● In AUTO mode, the standard temperature setting of COOL mode is 25℃ and the standard temperature setting of HEAT mode is 20℃. 1. After power-on, press the “1/0” button to set the air conditioner running. 2.
Page 21 7.12 TIMER operation mode Under turn-off state, press the TIMER ON button to set the timed turn-on in range of 0 to 24 hours. Under turn-on state, press the TIMER OFF button to set the timed turn-off in range of 0 to 24 hours.
Page 22 7.13 SLEEP mode operation In COOL and DRY mode, after the SLEEP program has run for 1 hour, the set temperature will be increased by 1℃ in the first hour, and increased by 2℃ in the second hour. Then the unit will run at this set temperature. In HEAT mode, after the SLEEP program has run for 1 hour, the set temperature will be decreased by 1℃...
Page 23 7.14 How to replace batteries 1. Slide down the battery cover of the remote controller and remove the old batteries. 2. Replace with two new ones (be careful about correctness of the polarities) 3. Re-attach the cover. NOTE： ● Do not mix new and used or different types of batteries for use.
Page 24 8. Disassembly procedures 8.1 Operation procedures/pictures (Disassembly procedures for indoor unit) 8.1.1 Disassembling the front panel assy Lift the front panel upward. Pull the panel outward with strength along the grooves Front panel that fix the front panel and take it out. (As shown in Fig.8-1) Take out the three screw covers and screw Filter...
Page 25 Operation procedures/picture ● Screw off the two pieces of screws that fix the electric box with screwdriver and take out the water-retaining rubber piece on the evaporator. Remove the grounding wire on the evaporator and pull out the tube sensor. Cut off the wire clip with scissor and unplug the connector terminal of indoor motor and stepping motor etc.
Page 26 Operation procedures/pictures ● Press the connector of the drainage hose with strength turn drainage hose counterclockwise to take it off. Screws (2 pieces) ● Remove the big and small guide louver. Use your fingers to bend them in the arrow direction with strength to take off the guide louver.
Page 27 Operation procedures/pictures 8.1.5 Disassembling the cross flow fan and motor ● Screw out the two pieces of tapping screws on the right side of the rear case that fix the right motor clamp and the bearing support to take out the right motor clamp and bearing support.(As shown in Screws Fig.8-11)
Page 28 9.2.Operation procedures/pictures (Disassembly procedures for outdoor unit) 8.2.1 Disassembling the top cover and front panel ● Screw off the 2 pieces of screws on the left side and 1 on the right side and lift it upward to take off the top cover.
Page 29 Operation procedures/pictures 8.2.3 Disassembling the fan blade, motor and motor support ● Screw off the fixing nut, flap gasket and spring gasket of the axial cross fan take out the axial flow fan with strength.(As shown in Fig.8-18) Fixing nut Fig.8-18 ●...
Page 30 Operation procedures/pictures 8.2.4 Disassembling the electric box ● Screw off the 2 pieces of screws that fix the electric box and unplug the lead wire insert of the compressor, reactor, four-way valve and fan motor to take out the electric box (As shown in Fig.8-20) Screws Fig.8-20 8.2.5 Disassembling the reactor box and reactor...
Page 31 Operation procedures/pictures 8.2.6 Disassembling the compressor ● Unloose the 3 pieces of nuts with gaskets; unsolder the solder joints of the compressor's suction and discharge pipe (As shown in Fig.8-23). Remove the pipeline carefully and take out the compressor. Solder joints Nut with gasket (3 pieces) Fig.8-23 8.2.7 Disassembling the electromagnetic four-way valve...
Page 32 Operation procedures/pictures 8.2.8 Disassembling the big valve and small valve ● Screw off the 2 pieces of bolts that fix the big valve and unsolder the solder joint between the big valve and air return pipe to take off the big valve.(As shown in Fig.8-25) (Note: When unsoldering solder joint, wrap the big valve completely with wet cloth to avoid high-temperature damage...
Page 33: Explosive View And Parts And Components List
9.Explosive view and parts and components list 9.Explosive view of indoor unit...
Page 34 9.2 Parts and components list of indoor unit The above date is subject to change without further notice.
Page 35 The above date is subject to change without further notice.
Page 36 9.3 Explosive view of outdoor unit...
Page 37 9.4 Parts and components list of outdoor unit Built-in Built-in The above data is subject to change without further notice.
Page 38 Built-in Built-in The above data is subject to change without further notice.
Page 39: Care And Maintenance
10. Care and maintenance Warning ■ Turn power off and pull out the power plug before cleaning the air conditioner. Or it may cause electric shock. ■ Never dampen the air conditioner, which may cause electric shock. Never rinse the unit with water. ■...
Page 40 10.3 Replacing the air purifier ● The air purifier is recommended for replacement once every 6 months. Please go to the special service center of Gree nearby to purchase new air purifier for replacement. 1. Take off the air filter Same as the first step of “Cleaning the air filter”...
Page 41: Installation Guide
1.The air conditioner must be installed by specialized personnel according to this manual to ensure proper use. 2.Contact your local GREE special installation and maintenance department prior to installation. Malfunction of air conditioner installed by none-special department might be difficult to handle in time due to inconvenience of business contact.
Page 42 NOTE: Installing the air conditioner in the following locations might cause malfunction of the air conditioner. If this is unavoidable please contact the special service center of GREE. • Location full of machine oil • Seaside saline and alkali districts •...
Page 43 11.3 Installing indoor unit 11.3.1 Installing the wall mounting plate 1 Adjust the horizontal position of the mounting plate 2. Fix the mounting plate on the wall by screws. 3. Pull the mounting plate after installation to see if it is firm enough.
Page 44 Signal controller Terminal board Wiring cover Connectors Wire clip Yellow-green Brown Power connection cord (Fig.11-3) Notes： ● All the electrical work must be done by qualified personnel according to the local laws, regulations and this manual. ● The rated voltage and the exclusive circuit must be used. ●...
Page 45 11.4 Installing outdoor unit 11.4.1 Installing the connecting pipe Torque spanner 1. Conical plug of the connecting pipe should insert properly into the corresponding conical surface of the valve connector. 2. Tighten the nut on the connecting pipe with strength and then tighten it by Spanner spanner, as shown in the figure Note: Too great torque will damage the nut.
Page 46 11.4.3 Vacuumizing and leakage detection Screwdriver 1.Take off the nut cover on the stop valve of outdoor unit. 2.Align the center of piping and tighten the conical nut with 3 or 4 turns Gas pipe by hand. One-way valve 3.Tighten the conical nut by spanner. Gas valve 4.Take off the one-way nut cover on the liquid valve and gas valve.
Page 47: Malfunction Analysis
12.Malfunction analysis Common malfunction and handling method Measure insulating resistance for grounding to When the breaker is set ON, it confirm whether there will trip at once. electrical leakage in the unit Breaker tripped or fuse burnt out When the unit is turned on, the Check the breaker and measure breaker will trip in a few the resistance.
Page 48: Air Circulation
Common malfunction and handling method for air conditioner with indoor and outdoor unit Air filters are blocked Clean the filter Air circulation is insufficient Set the fan speed to high or Fan speed was set too slow medium speed Outdoor unit should be installed in a place with well Improper installation location for outdoor unit ventilation, and awning should be installed.
Page 49 Common malfunction and handling method for air conditioner with indoor and outdoor unit Malfunction of compressor Replace the compressor When cooling Breakage of running capacitor of the Replace the capacitor heating, outdoor fan compressor runs, but compressor doesn't run. Manostat is recommended. Voltage is too low or too high Wire according to the circuit diagram Wrong wiring...

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Gree 2000 Service Manual

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