Gree GWC09AA, K5NNA6A Installation And Service Manual

GREE Service Manual GWC09AA / K5NNA6A Page 1

Models: GWC09AA - K5NNA6A

Installation and Service Manual

GREE Service Manual GWC09AA / K5NNA6A Page 2

Imprint

Funds

The publication was funded by the German Federal Ministry
for the Environment, Nature Conservation and Nuclear Safety
within the framework of the International Climate Initiative
based on a decision of the German Federal Parliament.

Federal Ministry for the Environment, Nature Conservation
and Nuclear Safety (BMU)
Programmbüro Internationale Klimaschutzinitiative
Potsdamer Platz 10
10785 Berlin
E-Mail: [e-mail]
Phone: [phone] - 218
Fax: [phone] – 303
Internet: http://www.international-climate-initiative.com

Support

The publication was supported by
Deutsche Gesellschaft für

Internationale Zusammenarbeit (GIZ) GmbH
– German International Cooperation –
Programme Proklima
Dag-Hammarskjöld-Weg 1-5
65760 Eschborn, Germany
Internet: www.giz.de/proklima

Programme manager: Bernhard Siegele
Contact: [e-mail]

Authors
GREE Electric Appliances Inc., Rolf Huehren, IKET GmbH

Reviewers

Dr. Daniel Colbourne, Dr. Caroline Narayan

Editors

Rebecca Kirch, Linda Ederberg

GREE Service Manual GWC09AA / K5NNA6A Page 3

Table of Content - 1

Abbreviations used with this manual……………..................... 005 Other adjustments and functions of the remote controller.. 035

Introduction………………………………………….................... 006 Hydrocarbon refrigerant R290 issues………….................. 038

General Safety Instructions………………………..................... 007 Refrigerant properties / parameters………….................. 038

The symbols used in this manual………………................... 007 Flammability…………………………………...................... 039

Electrical operations……………………………..................... 009 Hazard identification………………………….................... 039

Installation site……………………………………................... 009 First aid measures……………………………................... 040

Minimum room size………………………………................... 010 Fire fighting measures……………………….................... 041

Minimum requirements for service personnel qualifica-

tion…………………………………………................................. 011

Accidental release measures…………………................. 041

Basics in RAC…………………………………………............ 011 The handling of HC R290………………………................... 042

Checks for putting in operation…………………………............ 012 Refrigerant recovery………………………….................... 043

Checks for leakage………………………………………............ 012 Repair of leaks………………………………….................. 044

Handling of refrigerant………………………………….............. 012 Refrigerant gas detection…………………….................... 045

Installation, commissioning and maintenance of a compres-

sor………………………………………………........................... 012

Refrigerant cylinder handling………………..................... 046

Installation, commissioning and maintenance of a con-

denser …………………………………………………................ 013

Refrigerant pressure– temperature chart…….................... 048

Installation, commissioning and maintenance of an evapora-

tor…………………………………………………........................ 013

Flow of work for AC system installation, service, repair

and dismantling…………………......................................... 051

Piping………………………………………………………........... 013 AC system Installation………………………….................... 052

Description of the system and its components………….......... 014 Delivery conditions of indoor & outdoor unit.................... 052

General technical specifications………………………........... 014 Principle installation arrangement…………..................... 053

Indoor unit………………………………………………............ 015 Tools, equipment and accessories……………................ 054

Outdoor unit……………………………………………............ 016 Security advise for installation………………................... 055

Refrigerant transfer pipe-set…………………………............. 017 Table of various installation height and resulting room

size…………………………….......................................... 056

Capacity variation ratio according to temperature

(diagram)…………………………………………………............. 018

The installation site > general information…................... 056

Operation data……………………………………………............ 018 Installation site > outdoor unit……………….................... 057

Construction views > indoor unit………………………............. 019 Installation site > indoor unit…………………................... 057

Construction views > outdoor unit………………………........... 020 Installation dimension diagram……………….................. 058

Refrigerant flow diagram……………………………….............. 021 Installation check-list…………………………................... 059

Schematic diagram > Electrical wiring indoor unit……............ 022 Safety measures for electrical equipment……................ 060

Schematic diagram > Electrical wiring outdoor unit…............. 023 Requirements for earthing…………………...................... 060

Printed circuit board (PCB)………………………………........... 024 Miscellaneous…………………………………................... 060

Relay box…………………………………………………............ 026 Installation procedure > indoor unit…………................... 061

Remote controller > functional description……………............ 027 Installation of connection pipes and cables…................. 062

Functional specifications for AC system operation……........... 031 Installation of outdoor unit…………………….................. 065

Cooling mode…………………………………………….......... 031 Interconnection of in– and outdoor unit…….................... 066

Dry mode………………………………………………….......... 032 The quick-coupler valves…………………….................... 067

System protective functions…………………………….......... 033 Commissioning of the AC system………………................. 068

Fan and auto– mode…………………………………….......... 034 Checks before commissioning……………................. 068

GREE Service Manual GWC09AA / K5NNA6A Page 4

Table of Content - 2

Refrigerant circuit commissioning………………................... 068 Service label……………………………………................. 103

First operation of the system……………………................... 068 Dismantling, Recycling and disposal……………................ 104

Indoor unit……..………………………………….................... 068 Error codes, LED flashing and trouble shooting................. 105

Outdoor unit……………………………………….................... 069 Temperature sensor trouble shooting………................... 106

Handing over the system to your client…………..................... 069 PG motor (H6) trouble shooting………………................. 107

Start-up data sheet form…………………………...................... 070 Jumper cap (C5) trouble shooting……………................. 108

Service, repair and maintenance………………….................... 071 Freeze protection (E2) trouble shooting…….................. 109

Directives for service and maintenance…………................. 071 Low pressure (E3) trouble shooting………….................. 110

Regular annual preventive maintenance………………........ 072 PCB board (U8) trouble shooting…………….................. 111

Maintenance of the indoor unit………………………........... 072 Resistance table for temperature sensors……............... 112

Maintenance of the outdoor unit……………………............. 072 Main spare-parts list……………………………................... 115

Refrigerant circuit………………………………………........... 072 Disassembling procedures………………………................. 116

Maintenance check-list………………………………….......... 073 Disassembling the indoor unit……………….................... 116

Safety work area & temporary flammable zones…….......... 074 Disassembling the outdoor unit……………….................. 121

Arrangement of equipment and tools………………….......... 075 Exploded views and part lists………………….................... 126

Refrigerant venting……………………………………............. 076 Exploded view of the indoor unit……………................... 126

Venting > course of activities > part 1…………………......... 077 Part list of the indoor unit…………………...….................. 127

Venting > part 1 > detailed procedure…………………......... 078 Exploded view of the outdoor unit……………................. 128

Venting > course of activities > part 2…………………......... 079 Part list of the outdoor unit…………………….................. 129

Venting > part 2 > detailed procedure…………………......... 080 Recommended equipment and tools for the use with HC

refrigerants…………………………….................................. 130

Equipment for the use of OFDN (N2) in the field……........... 081

Flushing the system with OFDN (N2)………………….......... 083

Flushing the system and provision of “holding charge” with

OFDN > detailed procedure…………….............................. 084

Provision of a hermetically sealed refrigerant circuit............ 085

Leak, strength and tightness testing……………………........ 085

Leak check (bubble test)………………………………........... 087

Electronic gas detectors………………………………............ 088

Leak testing with OFDN & weak soapy water solution......... 089

Leak testing with OFDN and “bubbles” > detailed proce-

dure……………………………………………….................... 090

Trace gas (N2/H2) leak detection method……………........... 091

Trace gas leak detection > detailed procedure………......... 093

Pressure test (strength test) with OFDN………………......... 094

Pressure test (strength test) > detailed procedure……....... 095

Refrigerant circuit > Evacuation and charging……............ 096

Evacuation > detailed procedure………………………......... 099

Charging with refrigerant………………………………........... 100

Charging with refrigerant > detailed description……............ 101

Start-up data sheet form for service and repair………......... 102

GREE Service Manual GWC09AA / K5NNA6A Page 5

Abbreviation Clear Words

AC Air– conditioning

HC Hydrocarbon

LFL Lower flammability level

OFDN Oxygen free and dry nitrogen

PCB Printed Circuit Board

PG motor Indoor unit fan motor

PPE Personnel protective equipment

RAC Refrigeration and air– conditioning

UFL Upper flammability level

Abbreviations used within this manual:

GREE Service Manual GWC09AA / K5NNA6A Page 6

INTRODUCTION

ATTENTION

Please read this manual carefully before installing and operating the GREE Hydrocarbon
Air– Conditioner unit.

Careless installation and operation can cause severe injuries to operators, workers and
damage to the air-conditioner unit itself.

Keep this manual in a location for easy access as it is needed for reference during installa­tion, maintenance, service and operation of the unit.

This manual does not cover all aspects of installation, maintenance and service of the
chiller units; if additional information is needed, contact the GREE Costumer Service or
Sales Office.

General Information

Warning and cautions appear at appropriate locations throughout this manual book.

GREE Service Manual GWC09AA / K5NNA6A Page 7

General Safety Instructions

Please pay careful attention to these safety instructions, to avoid risks to
people and property. Before starting work on maintenance read this man­ual thoroughly and pay particular attention to the relevant chapters.

Regardless of further requirements of the country in which the equipment
will be installed: assembly, first start up, technical service, maintenance
and repair, as well as dismantling and disposal have to be carried out by
authorised personnel only.

During every operation strictly follow the instructions within this manual.
Pay attention to the specific rules of air conditioning, electrics and refrig­erant handling of the country within which the equipment is installed.

Key sections and/or sentences are highlighted with specific icons and
symbols to the right side of the page. Please pay particular attention to
this information.

The symbols used in this manual are as follows:

Information window highlighting important content of the spe­cific section or additional information to consider.

This sign will indicate that you are handling a flammable sub­stance and the surrounding environment can possibly con­tain it.

This is a general warning sign.

This label is used to indicate that the flammable refrigerant is
present within the application and service equipment

Images that indicate something that you should be strictly
avoided

This is a specific

remark and

points out the
importance of a
specific section

GREE Service Manual GWC09AA / K5NNA6A Page 8

Specific bans!

Specific commandments!

Instructions for first aid!

Fire protection!

Carefully read the instructions

Working on components with safety-relevant functions jeopardises the safe op­eration of the installation. In case it is necessary to replace components, only
use approved parts from GREE Electric, the Original Equipment Manufacturer
(OEM) or Gree released or authorised components. The system contains the
refrigerant R-290 (propane). This condition requires special safety precautions
to be observed. While working on the system, the presence of any kind of igni­tion sources (e.g. sparks, open flames, hot surfaces, static electricity) are strictly
prohibited. At the installation site, no matter what kind of activities are executed,
smoking is strictly prohibited!

Likewise, ensure the installation site is well ventilated. For further details on the
handling of the refrigerant R-290 see also pages 11 and 41.

Do not charge the system with any refrigerant which is not R-290! Do not mix
any refrigerants! Before filling the system, ensure that there is no air (or other
non-condensable gases such as nitrogen) left in the system, otherwise there is
severe danger of damage to the system caused by excessive high pressure.

After charging the system with refrigerant, carefully examine and confirm the
tightness by the use of an appropriate electronic leak detector!

ONLY original

GREE (OEM)

spare-parts are

permitted for

Service and Re-

pair!

GREE Service Manual GWC09AA / K5NNA6A Page 9

Electrical operations:

Electric operations (installation, repair, modification, maintenance, adjustment)
have to be fulfilled by trained and authorised personnel only.
When dealing with electrical issues, the specific rules of the country within which
the equipment is installed must be followed, in addition to the instructions within
this manual.
When working on the equipment or parts of it, the system has to be de­energised (by master switch, circuit breaker or separate cut-out) and made safe
against restart of the system. Do not reconnect the system to the electric circuit
until all work is done and all connections are tested.
If handled unsafely or unprofessionally, severe electric shocks can occur. Con­sider the wiring diagram and follow the instructions of this manual very carefully
whilst working on electrical parts. Wrong connections or incorrect grounding
may lead to severe injuries and mortal danger.

Ground the system according to the particular requirements of the country within
which the equipment is installed.

Connect all the wires properly and durably. Loose cables may lead to overheat­ing or fire.

Installation site:

Ensure that the ceiling or the wall is solid enough to carry the weight of the sys­tem which will be mounted on it. Pay attention to the installation of the outdoor
unit: operating noise and air flow should not bother neighbours.
Make sure that appropriate measures are taken against noise emissions, espe-

cially when the system is to be installed close to sensitive facilities (such as hos­pitals).

Insulate all tube connections professionally to avoid formation of water conden­sation and water damage to the rooms.
The outdoor unit must be fixed to a flat, stable location. Thereby pay attention
that in that location there is no snow, foliage or dirt accumulating. Take care of
further requirements to prevent the system from damage by earthquakes, hurri­canes or high winds.

Do not touch movable parts and keep free from clothing. Do not touch any part
of the system without wearing suitable personnel protective equipment and
clothing in order to avoid injury from: the compressor (hot surface), the refriger­ant condenser (hot surface, sharp fins) and the refrigeration tubes (hot and cold
surfaces, sharp spots).

Suitable personnel protective equipment is at a minimum:

1. Goggles

2. Gloves

3. Shoes

4. Overalls

Proceed

according the

manuals

instructions!

Regard

neighbour

protection, avoid

disruptive noise

emissions!

Avoid condensa-

tion of humidity

at tubes and

drains!

Pay attention to

movable parts!

Wear suitable

protective

clothing!

GREE Service Manual GWC09AA / K5NNA6A Page 10

Do not install the system in humid places.
Do not clean the system using water.
Do not energise the system without the suitable air filter assembly to prevent

dust accumulation within itself.
Clean up the installation or service area once work is completed and ensure that

no waste metal parts or wires remain in the equipment housing.
If anything irregular or conspicuous occurs (such as burnt part, smell, loud

noise, etc.) disconnect the system immediately and isolate from the electrical
supply.

Minimum room size

HC R-290 is a flammable refrigerant and can form explosive mixtures in low
concentrations. To minimise the risk of fire or explosion, the system must be in­stalled in a room with a minimum floor area.

Having a

malfunction

while

commissioning,

immediately

disconnect the

system from

mains!

Pay attention to

the room size for

indoor unit

installation!

For specific in­formation refer

page 56 of this

manual.

GREE Service Manual GWC09AA / K5NNA6A Page 11

Minimum requirements for service personal qualification

Unless there are further requirements, standards and legislation of the
country within which the equipment is installed may apply. Any techni­cians that works on GREE hydrocarbon air–conditioners must be compe­tent in the safe handling of flammable refrigerants, in addition to being in
possession of knowledge and skills to maintain best refrigeration installa­tion and servicing practices!

There are already training activities in place for engineers, technicians and sales
staff to provide professional knowledge and skills for the handling of HC refrig­erants and refrigeration systems operating with HCs.

Get trained and have your

“HC Refrigeration Professional” certification!

Basics in RAC

Knowledge of the basic SI standard units for temperature, pressure, mass, den­sity, energy.

Understanding of the basic theory of refrigeration systems including the func­tions of the main components in the system (compressor, evaporator, con­denser, thermostatic expansion valves).
Understanding how to read a refrigerant flow chart and an electrical circuit dia­gram.
The determination of non-condensable gases in the refrigeration system and
how to eliminate them.
The importance of the use of oxygen free dry nitrogen (OFDN) for system flush­ing, leak test and strength test.
The elimination of humidity from the refrigeration system and how to recover or
vent HC refrigerant from a system.

Usage of tables and diagrams (log p/h diagram, saturation tables of a refriger­ant, diagram of a single compression refrigeration cycle) and interpretation of
these tables and diagrams.

Knowledge of the basic operation of the following components in a refrigeration
system and their role and importance for refrigerant leakage prevention and
identification:

•

Temperature and pressure controls

•

Sight class and moisture indicators

•

Defrost controls, reverse cycle operation

•

System protectors

•

Measuring devices such as the pressure gauge manifold

•

Thermometer

•

Leak detector

•

Refrigerant charging devices

•

Vacuum pump

•

Oxygen free dry nitrogen cylinder and pressure regulator

Fault finding – analysis and repair.

•

Knowledge of flammable refrigerants

•

Risk analysis for the application of flammable refrigerant and properties of
flammable refrigerants

•

Electrical circuit assessment and repair

Get your Best

Practices

knowledge and

skills updated

for HC refriger-

ants and be

certificated for

these jobs!

Read More!

SAFETY CODE

OF PRACTICE

FOR

REFRIGERATING

SYSTEMS

UTILISING A2 &

A3

REFRIGERANTS

ISBN
1 872719 15 5

GREE Service Manual GWC09AA / K5NNA6A Page 12

Checks before putting in operation, after a long period of non­use, after maintenance or repair intervention or during opera­tion

Carry out a pressure and leak test to check the strength and the tightness of the
system.
Usage of a vacuum pump.
Evacuation of the system to remove air and moisture according to standard
practice.

Checks for leakage

Knowledge of potential leakage points of refrigeration, air-conditioning and heat
pump equipment. Making a visual and manual inspection of the whole system.

Carry out a check for leakage of the system using an indirect method and/or one
of the direct methods.

Direct leak detection methods

1. Fixed leakage detection systems

2. Portable electronic gas detectors

3. Ultraviolet (UV) indication fluids

4. Weak soapy water solution (bubble test) also in combination with OFDN

5. New installation tightness test for leakage detection procedure e.g. H2/N2

6. Operational system tightness test for leakage detection procedure

Indirect refrigerant detection methods:

1. Visual

2. Manual checks

Use of portable measuring devices such as pressure gauges, thermometers and
multi-meters for measuring Volt/Amp/Ohm in the context of indirect methods for
leakage checking and interpretation of the measured parameters.
It is very important to make use of an electronic gas detection device. Take care

that the electronic gas detector is designed and certificated for the use with
flammable refrigerants. Additionally, the electronic HC gas detector must be part
of the Personnel Protective Equipment (PPE) of the technician because if this
device is operational in the work area it will warn by detection and signalling if
HC refrigerant is in the atmosphere.

Handling of the refrigerant during installation, maintenance,
servicing or, recovery or venting

Use scales to weigh refrigerant. Knowledge of the requirements and procedures
for handling, storage and transportation, especially of flammable refrigerants
and especially of contaminated refrigerant and oils. Safe HC refrigerant recov­ery and venting.

Installation, commissioning and maintenance of a compressor

The basic functioning of a compressor (including capacity control and lubricating
system) and risks of refrigerant leakage to its operation.
Installing a compressor properly, including control and safety equipment.
Adjusting the safety and control switches. Checking the oil return system.
Start up and shut down a compressor and checking the good working conditions

of the compressor, including by making measurements during operation of com­pressor.

The use of OFDN

is important and

the HC gas de-

tector is indeed a

personnel pro-

tection device

(PPE)!

GREE Service Manual GWC09AA / K5NNA6A Page 13

Installation, commissioning and maintenance of condensers

The basic functioning of a condenser.
Installing a condenser properly, including control and safety equipment.
Adjusting the safety and control switches. Checking the hot-gas and liquid lines
in correct positions. Start up and shut down a condenser and check the good
working conditions, including by making measurements during operation.
Checking the surface of the condenser. Methods for condenser surface cleaning
and fins adjustments.

Installation, commissioning and maintenance of evaporators

The basic functioning of an evaporator (including defrosting system).
Installation of an evaporator including control and safety equipment.
Adjusting the safety and control switches.
Checking the liquid and suction pipelines in the correct position and checking
the hot gas defrost pipeline. Start up and shut down an evaporator and check
the good working of the evaporator, including by making measurements during
operation. Functional checking of the reverse cycling control device.
Checking the surface of the evaporator. Methods for evaporator surface clean­ing and fins adjustments.

Piping

Professional brazing is another key component for safe and state-of-the-art HC
system installation and servicing. Brazing leak-free joints on metallic tubes and
pipes that can be used in refrigeration, air-conditioning or heat pump systems.
Make/check pipe and component supports and vibration elimination. Knowledge

about the designing and dimensioning of the different refrigeration system sec­tion pipes including risers. The behaviour of lubricants within the refrigeration
system and the influences of the dimensioning of pipe work in relation to lubri­cants. Develop strategies to minimise mechanical connections like flaring or
flanges and to provide a sealed (hermetic) system.

Regular

professional

brazing

experience is an

important pre-

condition for the

work with

hydrocarbon

refrigerants!

Preventive
maintenance will
improve the sys-

tem efficiency

GREE Service Manual GWC09AA / K5NNA6A Page 14

Description of the system and its components

Unit Specifications GWC09AA—K5NNA4A

General Technical Specifications

Split-type On/Off

Item

No

Parameter Unit Value

1 Model

GWC09AA-K5NNA4A

2 Product Code CA115012800

3

Power Sup­ply

Rated Voltage

V～

220-240
Rated Frequency Hz 50
Phases 1

4 Power Supply Mode Indoor
5 Cooling Capacity W 2650
6 Heating Capacity W NA
7 Cooling Power Input W 883
8 Heating Power Input W NA

9 Cooling Power Current A 3.92
10 Heating Power Current A NA
11 Rated Input W 995
12 Rated Current A 4.41
13 Air Flow Volume( SH/H/M/L/SL) m3/h 480/460/420/380/­14 Dehumidifying Volume L/h 0,8
15 EER W/W 3,0
16 COP W/W NA
17 SEER W/W NA
18 HSPF W/W NA
19 Application Area m

2

12-18

GREE Service Manual GWC09AA / K5NNA6A Page 15

Indoor

Unit

20 Model of indoor unit

GWC09AA-K5NNA4A/I
21 Fan Type Cross-flow
22 Diameter Length( D x L) mm Ø 85x615

23 Fan Motor Cooling Speed (SH/H/M/L/SL) r/min 1350/1150/1050/950/­24 Fan Motor Heating Speed (SH/H/ML/SL) r/min NA

25 Output of Fan Motor W 10
26 Fan Motor RLA A 0.10
27 Fan Motor Capacitor µF 1
28 Input of Heater W NA
29 Evaporator Form Aluminium Fin-copper Tube
30 Pipe Diameter mm Ø 7
31 Row-fin Gap mm 2-1.6
32 Coil Length (LXDXW) mm 603X264X25.4
33 Swing Motor Model MP28VB
34 Output of Swing Motor W 2

35 Fuse A

PCB 3.15A Transformer

0.2A

36 Sound Pressure Level (SH/H/M/L) dB (A) 38/36/33/30
37 Sound Power Level (SH/H/M/L) dB (A) 48/46/43/40
38 Dimension (WXHXD) mm 815×165×267
39 Dimension of Carton Box (L/W/H) mm 975×320×385
40 Dimension of Package(L/W/H) mm 978X323X400
41 Net Weight kg 14
42 Gross Weight kg 18

Item

No

Parameter Unit Value

Indoor Unit

GREE Service Manual GWC09AA / K5NNA6A Page 16

43

Outdoor

Unit

Model of Outdoor Unit GWC09AA-K5NNA4A/O

44 Compressor Manufacturer/Trademark

ZHUHAI LANDA COMPRES-

SOR CO,LTD/GREE

45 Compressor Model QXD-C184A030A

46 Compressor Oil CP2922HT(EXP3535)
47 Compressor Type Rotary

48 L.R.A. A 21.00
49 Compressor RLA A 3.90
50 Compressor Power Input W 820
51 Overload Protector Internal
52 Throttling Method Capillary
53 Operation Temp ℃

16ºC～30ºC

54 Ambient Temp (Cooling) ℃

18ºC～43ºC
56 Condenser Form Aluminium Fin-copper Tube
57 Pipe Diameter mm Ø5
58 Rows-fin Gap mm 1-1.3
59 Coil Length (LXDXW) mm 741×495.3×12.7
60 Fan Motor Speed rpm

860±20
61 Output of Fan Motor W 25
62 Fan Motor RLA A 0,45
63 Fan Motor Capacitor µF 2.5
64 Air Flow Volume of Outdoor Unit m3/h 1800

65 Fan Type Axial-flow
66 Fan Diameter mm Ø400

Item

No

Parameter Unit Value

Outdoor Unit

GREE Service Manual GWC09AA / K5NNA6A Page 17

68

Outdoor
Unit

Climate Type T1

69 Isolation

I

70 Moisture Protection

IP24

71

Permissible Excessive Operating Pres­sure for the Discharge Side

MPa 2.5

72

Permissible Excessive Operating Pres­sure for the Suction Side

MPa 0.5

73 Sound Pressure Level (H/M/L) dB (A)

50

74 Sound Power Level (H/M/L) dB (A)

60

75 Dimension (WXHXD) mm 848X540X320
76 Dimension of Carton Box (L/W/H) mm 878X360X580

77 Dimension of Package (L/W/H) mm

881X363X595

78 Net Weight kg 35
79 Gross Weight kg 39
80 Refrigerant R-290
81 Refrigerant Charge kg 0.20

Connec­tion Pipe

82 Length m 5

83 Gas Additional Charge g/m

Not Permitted

84 Outer Diameter Liquid Pipe mm Ø 6
85 Outer Diameter Gas Pipe mm Ø12
86 Max Distance Height m 4
87 Max Distance Length m 5

88

Container
Loading
Quantity

20'GP set 95
89 40' GP set 198
90 40' HQ set 225

Item

No

Parameter Unit Value

The unit is an

INTRINSIC SAFE

System!

Refrigerant

charge is limited

to 200 gram

Top-up of

charge is not

permitted

Modification of

system and in

specific the pre-

assembled

pipe-length is

not permitted!

GREE Service Manual GWC09AA / K5NNA6A Page 18

Capacity Variation Ratio According to Temperature

Cooling Mode Only

Operation Data

Notes:

1. Measure surface temperature of heat exchanger pipe around centre of
heat exchanger path (U-Bend) (Thermistor Thermometer)

2. Connection piping conditions (Liquid / Suction) fixed at 5 m

3. P = Suction - Pressure of refrigerant measured at service port connection

4. T1 = Inlet and Outlet Temperature of evaporator (pipe surface Tempera­ture)

5. T2 = Inlet and Outlet Temperature of condenser (pipe surface Tempera­ture)

Temperature Condi-

tions in °C

Model
Name

Standard
Pressure

Heat Exchanger

Pipe Temperature

Indoor

Fan

Mode

Outdoor

Fan

Mode

Indoor Outdoor

9K

P (MPa) T1 (°C) T2 (°C)

Super

High

860

27/19 35/24 0.5 to

0.6

8 to 11 83 to 38

Modification of

pipe-length is

not permitted!

GREE Service Manual GWC09AA / K5NNA6A Page 19

Construction Views

(All Dimensions in mm)

Indoor Unit

Wall Mounted Plate

The indoor unit
is equipped with
pre-fixed and
isolated refriger­ant transfer
pipes!

The length of the
pipes is 5 m.

The indoor-unit
is pre-charged
with HC R-290
refrigerant

In addition pre­fixed is:

1. Electrical con­nections be­tween indoor
and outdoor
unit

2. Mains-supply
cable with
plug

3. Condensate
drain pipe

GREE Service Manual GWC09AA / K5NNA6A Page 20

Outdoor Unit

GREE Service Manual GWC09AA / K5NNA6A Page 21

Refrigerant Flow Diagram

Designation Remark
1 Compressor Rotary scroll
2 Condenser Finned Heat Exchanger
3 Evaporator Finned Heat Exchanger
4 Capillary tube Refrigerant expansion device
5 Strainer Refrigerant filtering device
6 2 - way valve Stop valve
7 3 – way valve Stop valve and ¼” SAE service port

9 Indoor unit Pre-assembled with 5 m refrigerant transfer pipes

10 Outdoor unit
P1 Suction pressure R-290 low pressure gauge measuring
T1 Temperature Air- inlet Room air entering evaporator
T2 Temperature Air- outlet Room air leaving evaporator
T3 Temperature Air- inlet Outside air entering the condenser
T4 Temperature Air- outlet Outside air leaving the condenser

8 Service Port 1/4” NPT

P1

T1 T3

T4

T2

5 4 5

2

1

7

9

3

6

10

8

GREE Service Manual GWC09AA / K5NNA6A Page 22

Schematic diagram

Electrical Data

Meaning of Marking

•

Indoor Unit

•

Outdoor Unit

Electrical Wiring - Indoor Unit

These circuit diagrams are subject to change without notice, please refer to the one sup­plied with the unit.

Symbol Colour Symbol Symbol Colour of Symbol
BU Blue BN Brown
YE Yellow WH White
RD Red BK Black
YEGN Yellow / Green Protective Earth

Symbol Parts Name Symbol Colour Symbol Symbol Colour of Symbol
C1 CBB61 BN Brown WH White

C2 CBB65 BU Blue YE Yellow
SAT Overload BK Black RD Red
COMP Compressor OG Orange YEGN Yellow / Green
Protective Earth GN Green

Do not modify

electrical com-

ponents or

wiring, for

replacements.

Only use OEM

spare-parts!

GREE Service Manual GWC09AA / K5NNA6A Page 23

Electrical Wiring - Outdoor Unit

These circuit diagrams are subject to change without notice, please refer to the one sup­plied with the unit.

Do not modify

electrical com-

ponents or

wiring, for

replacements

only use OEM

spare-parts!

GREE Service Manual GWC09AA / K5NNA6A Page 24

Printed Circuit Board (top-view)

No. Interface Name

No. Interface Name

1 Neutral wire of PCB 10 Outdoor ambient temperature sensor

2

Transformer input
terminal

11 Indoor ambient temperature sensor

3 PG motor control 12 Indoor tube temperature sensor
4

Relay box control

13 Transformer output terminal

5 Swing motor control 14 Live wire input terminal of relay box

6 PG motor feedback 15 Fuse
7 Jumper cap 16 Live wire input

8 Display connector 2 17

PCB indoor unit relay box

9 Display connector 1 18 Low pressure switch

Name

on PCB

board

N, N1

TR-IN

PG
COM—

INNER1
SWING

PGF

JUMP

DISP2

DISP1

Name

on PCB

board

OUTROOM

ROOM

TUBE

TR-OUT

AC-L1

FU2

AC_L

/

LPP

GREE Service Manual GWC09AA / K5NNA6A Page 25

Printed Circuit Board (bottom-view)

Left Right

Down

Up

Do not modify

electrical com-

ponents or

wiring, for

replacements

only use OEM

spare-parts!

GREE Service Manual GWC09AA / K5NNA6A Page 26

Relay Box (top-view)

Relay Box (bottom-view)

Down

Up

Left

Right

Do not modify

electrical com-

ponents or

wiring, for

replacements

only use OEM

spare-parts!

GREE Service Manual GWC09AA / K5NNA6A Page 27

Functional description and controls

The remote control

GREE Service Manual GWC09AA / K5NNA6A Page 28

GREE Service Manual GWC09AA / K5NNA6A Page 29

Unit Functions

GREE Service Manual GWC09AA / K5NNA6A Page 30

Battery

Replacement

Replacement of batteries:

1: Remove the battery cover plate from the rear of the
remote controller.
2: Take off the used batteries
3: Insert two new AAA1.5V batteries and pay attention
to the polarity.
4: Reinstall the battery cover plate.

Please notice:

When replacing the batteries, do not use used or differ­ent types of batteries, otherwise it may cause malfunc­tion.

If the remote controller will not be used for a long time,
please remove batteries to avoid leaking.

Make sure that used batteries are disposed of according
to local regulations. Most often batteries are not allowed
to be part of domestic waste.

If the remote controller does not operate correctly,
please take the batteries out and reinsert them after at
least 30 seconds. If the malfunction is still valid, replace
the batteries.