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Summary of Contents for Gree GWC09AA
- Page 1 Installation and Service Manual Models: GWC09AA - K5NNA6A GREE Service Manual GWC09AA / K5NNA6A Page 1...
- Page 2 Dag-Hammarskjöld-Weg 1-5 65760 Eschborn, Germany Internet: www.giz.de/proklima Programme manager: Bernhard Siegele Contact: bernhard.siegele@giz.de 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...
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Page 3: Table Of Contents
Installation of outdoor unit……………………....Cooling mode……………………………………………..Interconnection of in– and outdoor unit……....Dry mode…………………………………………………..The quick-coupler valves……………………....System protective functions……………………………..Commissioning of the AC system………………....Fan and auto– mode……………………………………..Checks before commissioning……………....GREE Service Manual GWC09AA / K5NNA6A Page 3... - Page 4 Pressure test (strength test) > detailed procedure……..Refrigerant circuit > Evacuation and charging…….... Evacuation > detailed procedure………………………..Charging with refrigerant………………………………... Charging with refrigerant > detailed description…….... Start-up data sheet form for service and repair………..GREE Service Manual GWC09AA / K5NNA6A Page 4...
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Page 5: Abbreviations Used With This Manual
Clear Words Air– conditioning Hydrocarbon Lower flammability level OFDN Oxygen free and dry nitrogen Printed Circuit Board PG motor Indoor unit fan motor Personnel protective equipment Refrigeration and air– conditioning Upper flammability level GREE Service Manual GWC09AA / K5NNA6A Page 5... -
Page 6: Introduction
Keep this manual in a location for easy access as it is needed for reference during installa- tion, 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. -
Page 7: General Safety Instructions
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 GREE Service Manual GWC09AA / K5NNA6A Page 7... - Page 8 In case it is necessary to replace components, only ONLY original use approved parts from GREE Electric, the Original Equipment Manufacturer GREE (OEM) (OEM) or Gree released or authorised components. The system contains the spare-parts are refrigerant R-290 (propane). This condition requires special safety precautions permitted for to be observed.
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Page 9: Electrical Operations
(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 GREE Service Manual GWC09AA / K5NNA6A Page 9... -
Page 10: Minimum Room Size
HC R-290 is a flammable refrigerant and can form explosive mixtures in low page 56 of this concentrations. To minimise the risk of fire or explosion, the system must be in- manual. stalled in a room with a minimum floor area. GREE Service Manual GWC09AA / K5NNA6A Page 10... -
Page 11: Minimum Requirements For Service Personnel Qualifica- Tion
Practices country within which the equipment is installed may apply. Any techni- knowledge and cians that works on GREE hydrocarbon air–conditioners must be compe- skills updated tent in the safe handling of flammable refrigerants, in addition to being in for HC refriger-... -
Page 12: Checks For Putting In Operation
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 com- pressor. GREE Service Manual GWC09AA / K5NNA6A Page 12... -
Page 13: Installation, Commissioning And Maintenance Of A Con- Denser
Develop strategies to minimise mechanical connections like flaring or refrigerants! flanges and to provide a sealed (hermetic) system. GREE Service Manual GWC09AA / K5NNA6A Page 13... -
Page 14: Description Of The System And Its Components
10 Heating Power Current 11 Rated Input 12 Rated Current 4.41 13 Air Flow Volume( SH/H/M/L/SL) 480/460/420/380/- 14 Dehumidifying Volume 15 EER 16 COP 17 SEER 18 HSPF 19 Application Area 12-18 GREE Service Manual GWC09AA / K5NNA6A Page 14... -
Page 15: Indoor Unit
0.2A Sound Pressure Level (SH/H/M/L) dB (A) 38/36/33/30 Sound Power Level (SH/H/M/L) dB (A) 48/46/43/40 Dimension (WXHXD) 815×165×267 Dimension of Carton Box (L/W/H) 975×320×385 Dimension of Package(L/W/H) 978X323X400 Net Weight Gross Weight GREE Service Manual GWC09AA / K5NNA6A Page 15... -
Page 16: Outdoor Unit
Coil Length (LXDXW) 741×495.3×12.7 Fan Motor Speed 860±20 Output of Fan Motor Fan Motor RLA 0,45 Fan Motor Capacitor µF Air Flow Volume of Outdoor Unit 1800 Fan Type Axial-flow Fan Diameter Ø400 GREE Service Manual GWC09AA / K5NNA6A Page 16... -
Page 17: Refrigerant Transfer Pipe-Set
Outer Diameter Gas Pipe Ø12 Modification of Max Distance Height system and in specific the pre- Max Distance Length assembled pipe-length is 20'GP not permitted! Container 40' GP Loading Quantity 40' HQ GREE Service Manual GWC09AA / K5NNA6A Page 17... -
Page 18: Capacity Variation Ratio According To Temperature (Diagram)
P = Suction - Pressure of refrigerant measured at service port connection not permitted! T1 = Inlet and Outlet Temperature of evaporator (pipe surface Tempera- ture) T2 = Inlet and Outlet Temperature of condenser (pipe surface Tempera- ture) GREE Service Manual GWC09AA / K5NNA6A Page 18... -
Page 19: Construction Views > Indoor Unit
HC R-290 refrigerant In addition pre- fixed is: 1. Electrical con- nections be- tween indoor and outdoor unit 2. Mains-supply cable with plug 3. Condensate drain pipe Wall Mounted Plate GREE Service Manual GWC09AA / K5NNA6A Page 19... -
Page 20: Construction Views > Outdoor Unit
Outdoor Unit GREE Service Manual GWC09AA / K5NNA6A Page 20... -
Page 21: Refrigerant Flow Diagram
R-290 low pressure gauge measuring Temperature Air- inlet Room air entering evaporator Temperature Air- outlet Room air leaving evaporator Temperature Air- inlet Outside air entering the condenser Temperature Air- outlet Outside air leaving the condenser GREE Service Manual GWC09AA / K5NNA6A Page 21... -
Page 22: Schematic Diagram > Electrical Wiring Indoor Unit
Orange YEGN Yellow / Green Protective Earth Green Electrical Wiring - Indoor Unit These circuit diagrams are subject to change without notice, please refer to the one sup- plied with the unit. GREE Service Manual GWC09AA / K5NNA6A Page 22... -
Page 23: Schematic Diagram > Electrical Wiring Outdoor Unit
Do not modify These circuit diagrams are subject to change without notice, please refer to the one sup- electrical com- plied with the unit. ponents or wiring, for replacements only use OEM spare-parts! GREE Service Manual GWC09AA / K5NNA6A Page 23... -
Page 24: Printed Circuit Board (Pcb)
Live wire input terminal of relay box PG motor feedback Fuse JUMP Jumper cap AC_L Live wire input PCB indoor unit relay box DISP2 Display connector 2 DISP1 Display connector 1 Low pressure switch GREE Service Manual GWC09AA / K5NNA6A Page 24... - Page 25 Printed Circuit Board (bottom-view) Right Left Down Do not modify electrical com- ponents or wiring, for replacements only use OEM spare-parts! GREE Service Manual GWC09AA / K5NNA6A Page 25...
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Page 26: Relay Box
Relay Box (top-view) Do not modify electrical com- ponents or wiring, for replacements only use OEM spare-parts! Relay Box (bottom-view) Right Left Down GREE Service Manual GWC09AA / K5NNA6A Page 26... -
Page 27: Remote Controller > Functional Description
Functional description and controls The remote control GREE Service Manual GWC09AA / K5NNA6A Page 27... - Page 28 GREE Service Manual GWC09AA / K5NNA6A Page 28...
- Page 29 Unit Functions GREE Service Manual GWC09AA / K5NNA6A Page 29...
- Page 30 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. Battery Replacement GREE Service Manual GWC09AA / K5NNA6A Page 30...
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Page 31: Functional Specifications For Ac System Operation
As to that please compare the following schedule: In this mode the temperature ranges between 16 to 30° C. On the display of the indoor unit the symbols “OPERATION, COOLING” and the temperature preset value are indicated. GREE Service Manual GWC09AA / K5NNA6A Page 31... -
Page 32: Dry Mode
As to that please compare the following schedule: The temperature ranges between 16 to 30° C. On the d isplay of the indoor unit the symbols “OPERATION, COOLING” and the temperature preset value are indicated. GREE Service Manual GWC09AA / K5NNA6A Page 32... -
Page 33: System Protective Functions
If the compressor runs for at code clarifica- least six minutes at a stretch, the counter for the overvoltage protector will be tions. reset. “Evaporator Temperature To High” protection GREE Service Manual GWC09AA / K5NNA6A Page 33... -
Page 34: Fan And Auto- Mode
(COOLING, FAN). Moreover the prese- lected temperature is displayed. Please note the delay of 30 seconds before the system changes mode. The safety functions correspond to those in the particularly represented mode. GREE Service Manual GWC09AA / K5NNA6A Page 34... -
Page 35: Other Adjustments And Functions Of The Remote Controller
This function may be set in COOLING mode. Automatic Control of Fan speed The system will automatically choose the speed of the indoor unit fan (LOW, MEDIUM, HIGH), dependent on the ambient temperature. GREE Service Manual GWC09AA / K5NNA6A Page 35... - Page 36 Please note: If the position is set by the remote control unit between I and B, A and C or B and D, the air outlet flap anyhow goes between the positions L and GREE Service Manual GWC09AA / K5NNA6A Page 36...
- Page 37 If there has been a timer adjustment, which has not yet worked out, the system recalculates the timer du- ration with the assistance of the stored information and will perform adequately. The clock timer cannot be saved. GREE Service Manual GWC09AA / K5NNA6A Page 37...
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Page 38: Hydrocarbon Refrigerant R290 Issues
Lower flammability level LFL [g/m safe use of Lower flammability level LFL [%] hydrocarbon refrigerants Upper flammability level UFL [g/m GIZ—PROKLIMA Upper flammability level UFL [%] Ignition temperature [° C] http://www.giz.de/ proklima GREE Service Manual GWC09AA / K5NNA6A Page 38... -
Page 39: Flammability
In poorly ventilated areas unconsciousness or as- Rely always on phyxiation may result. best service practices in refrigeration! GREE Service Manual GWC09AA / K5NNA6A Page 39... -
Page 40: First Aid Measures
Do not use ointments or powders. Obtain medical assistance immediately. Eyes: Cold burns should be flushed with water to normalise temperature, cover the eye with a sterile dressing and obtain medical assistance immediately. GREE Service Manual GWC09AA / K5NNA6A Page 40... -
Page 41: Fire Fighting Measures
Further action (when release is made safe): • Extinguish all naked lights – avoid creating sparks • Position fire fighting equipment • Cover drains and disperse vapour with water spray. Note: vapour may col- lect in confined spaces. GREE Service Manual GWC09AA / K5NNA6A Page 41... -
Page 42: The Handling Of Hc R290
Appropriate detectors, suitable for hydrocarbons, must be available and opera- tional all the time. Appropriate tools and appliances must be available and ready for operation. Any employees need to be instructed extensively about the hazard. safety measures and the possible safety GREE Service Manual GWC09AA / K5NNA6A Page 42... -
Page 43: Refrigerant Recovery
• After the systems‘ pump out, the system should be flushed with oxygen- free dry nitrogen (OFDN) in order to ensure no flammable gas are inside the system. GREE Service Manual GWC09AA / K5NNA6A Page 43... -
Page 44: Repair Of Leaks
The use OFDN is an important precondition for professional leak repair! 1. System flush- ing from HC 2. Inert gas braz- 3. Leak testing 4. Strength test- 5. Cleaning (blowing) agent GREE Service Manual GWC09AA / K5NNA6A Page 44... -
Page 45: Refrigerant Gas Detection
In this way, technicians can be alerted whenever an inad- vertent release of flammable refrigerant occurs, and can immediately act upon the relevant emergency procedures. Portable HC Gas Detector GREE Service Manual GWC09AA / K5NNA6A Page 45... -
Page 46: Refrigerant Cylinder Handling
In many cases information about regulations for the transport of cylinders could be given by the dealer of the refrigerant. GREE Service Manual GWC09AA / K5NNA6A Page 46... - Page 47 6. Place the security advise “flammable gas“ upon the rear side of the van. 7. Smoking or open fire is strictly forbidden inside the van. 8. Do not leave cylinders in a locked van without surveillance longer than necessary. GREE Service Manual GWC09AA / K5NNA6A Page 47...
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Page 48: Refrigerant Pressure- Temperature Chart
3,57 51,76 256,85 2,57 37,25 17,6 368,70 3,69 53,48 268,70 2,69 38,97 19,4 380,85 3,81 55,24 280,85 2,81 40,73 21,2 393,29 3,93 57,04 293,29 2,93 42,54 406,04 4,06 58,89 306,04 3,06 44,39 GREE Service Manual GWC09AA / K5NNA6A Page 48... - Page 49 10,01 145,25 901,45 9,01 130,75 82,4 1026,83 10,27 148,93 926,83 9,27 134,43 84,2 1052,68 10,53 152,68 952,68 9,53 138,18 1079,00 10,79 156,50 979,00 9,79 141,99 87,8 1105,79 11,06 160,38 1005,79 10,06 145,88 GREE Service Manual GWC09AA / K5NNA6A Page 49...
- Page 50 19,48 282,51 1847,80 18,48 268,01 134,6 1989,07 19,89 288,49 1889,07 18,89 273,99 136,4 2030,98 20,31 294,57 1930,98 19,31 280,07 138,2 2073,54 20,74 300,75 1973,54 19,74 286,24 2116,75 21,17 307,01 2016,75 20,17 292,51 GREE Service Manual GWC09AA / K5NNA6A Page 50...
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Page 51: Flow Of Work For Ac System Installation, Service, Repair And Dismantling
The main concern for involved service personal is to avoid the release of any refrigerant during in- stallation, maintenance, repair and service of the HC R-290 air-conditioning system. The following chart shall highlight important work flow activities and where specific care should take place! GREE Service Manual GWC09AA / K5NNA6A Page 51... -
Page 52: Ac System Installation
The HC R-290 AC delivery package consist of the following components: The Indoor Unit with attachments, mounting support, remote controller and documentation All components are pressurised and precharged with HC R-290 refrigerant! The Outdoor Unit GREE Service Manual GWC09AA / K5NNA6A Page 52... -
Page 53: Principle Installation Arrangement
(pre assembled) and air outlet Quick coupler for refrigerant Indoor (wall- Drain pipe transfer tube connections mounted) unit Shadow zone for outdoor unit in- Air outlet Air Inlet evaporator stallation evaporator GREE Service Manual GWC09AA / K5NNA6A Page 53... -
Page 54: Tools, Equipment And Accessories
To evacuate the AC system (rest removal of HC refrigerant) Electronic vacuum gauge AC system charging with refrigerant HC R-290 refrigerant cylinder Safe transport of refrigerant Weighting scales Reliable and accurate charge of HC R-290 refrigerant GREE Service Manual GWC09AA / K5NNA6A Page 54... -
Page 55: Security Advise For Installation
Should there be a gas detection refer immediately to the local service centre in order to organise a replacement system. Now unwrap the components. Examine the delivered parts for damages. GREE Service Manual GWC09AA / K5NNA6A Page 55... -
Page 56: Table Of Various Installation Height And Resulting Room Size
The system should not be mounted at the following sites because of the existing danger of outer influences for a risk of malfunction or failure. In cases when in- stallation to these sites is unavoidable, first contact the GREE Co. service part- ner. -
Page 57: Installation Site > Outdoor Unit
8. There shall be no electric appliance, power switch or socket under the in- door unit. 9. There should be a minimum distance of about 1 m from TV-sets or any other electric appliances. GREE Service Manual GWC09AA / K5NNA6A Page 57... -
Page 58: Installation Dimension Diagram
Installation Dimension Diagram GREE Service Manual GWC09AA / K5NNA6A Page 58... -
Page 59: Installation Check-List
Remember, if you cannot work safe with HC refrigerants, don't do it! In general, the GREE Hydrocarbon R-290 AC– Split System must be set up and configured to original factory specifications and tolerances! No Precondition for Installation... -
Page 60: Safety Measures For Electrical Equipment
4. The system is not a toy. Give advice to the end-user of no uncontrolled playing of children in order to avoid misuse of the system. GREE Service Manual GWC09AA / K5NNA6A Page 60... -
Page 61: Installation Procedure > Indoor Unit
In doing so, vibrations and sound transmis- sion is avoided. Furthermore, pay attention to equal the weight distribution of the indoor unit to all screws. GREE Service Manual GWC09AA / K5NNA6A Page 61... -
Page 62: Installation Of Connection Pipes And Cables
The end of the condensate pipe must not touch the maximum level of the con- densate inside the container. After installation the condensate pipe must be checked for density by testing the pipe with rinsing water. GREE Service Manual GWC09AA / K5NNA6A Page 62... - Page 63 2. Insert the condensing pipe into the piping-hole sleeve. 3. Lag the piping-hole sleeve with a wide adhesive tape in order to prevent it from moving. 4. Move the piping-hole sleeve together with the condensate pipe through the wall duct. GREE Service Manual GWC09AA / K5NNA6A Page 63...
- Page 64 Hang up the indoor unit to the mounting plate and make sure that it is fixed tightly. After checking the installation, close the cable channel, which is located inside the wall by using operational resources such as plaster or mortar. GREE Service Manual GWC09AA / K5NNA6A Page 64...
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Page 65: Installation Of The Outdoor Unit
Furthermore make sure that the outdoor unit is mounted tightly enough in order to resist strong winds. In areas with a large amount of snow it is recommended to place a roof above the outdoor unit. GREE Service Manual GWC09AA / K5NNA6A Page 65... -
Page 66: Interconnection Of In- And Outdoor Unit
Mechanical Connectors at Pipes with Tightening torque (Nm) ¼” 14 to 18 ⅜” 34 to 43 ½” 49 to 61 ⅝” 68 to 82 GREE Service Manual GWC09AA / K5NNA6A Page 66... -
Page 67: The Quick-Coupler Valves
Tighten here! Carefully mount the valve caps Valve and the service Caps port cap back to the stop-valves and include these spots into Tighten here! the leak-check activities! GREE Service Manual GWC09AA / K5NNA6A Page 67... -
Page 68: Commissioning Of The Ac System
15 minutes test. 6. Finally the measured temperature difference across the indoor unit air inlet and air outlet should be at about 8 K. GREE Service Manual GWC09AA / K5NNA6A Page 68... -
Page 69: Outdoor Unit
For the documentation of the system commissioning and clients instruction, use the “Start Up Data Sheet” report placed on the following page. Fill the “Start Up Data Sheet” report, sign it and hand it over to the client! GREE Service Manual GWC09AA / K5NNA6A Page 69... -
Page 70: Start-Up Data Sheet Form
Start Up Data Sheet for GREE Split Air-Conditioner Installation Company Address Telephone & Fax Technician Name Registration No. Client / Company Contact Person Installation / Appliance DATA Model and No. Date of Installation / Repair Comments / Repair Operating Data –... -
Page 71: Service, Repair And Maintenance
12. Before beginning maintenance ensure sufficient security- and emergency measures are provided and ready for operation. 13. Ensure an appropriate fire extinguisher (CO or dry powder) is ready for use. GREE Service Manual GWC09AA / K5NNA6A Page 71... -
Page 72: Regular Annual Preventive Maintenance
“Service, repair and maintenance” section (beginning on page 71) of this manual. Always wear your individual protective devices! GREE Service Manual GWC09AA / K5NNA6A Page 72... -
Page 73: Maintenance Check-List
Cables and wiring / fixing, friction Wiring – screws tightness Temperature sensors Relays or other electr. components Miscellaneous Labelling oft he system Availability of documentation Any clients complain Signature of technician Date: GREE Service Manual GWC09AA / K5NNA6A Page 73... -
Page 74: Safety Work Area & Temporary Flammable Zones
(breaking into the refrigerant carry- ing system), the designated two (2) metres safety area will apply the same way as indicated for the outdoor unit! GREE Service Manual GWC09AA / K5NNA6A Page 74... -
Page 75: Arrangement Of Equipment And Tools
Manifold (Vacuum Gauge) Connection Hose D > Vacuum Gauge Outdoor Unit Liquid Side (High) Vent Hose 5 m length ½” (12 mm) inner diameter Outdoor Unit Gas Side (Low) Temporary Flammable Zones GREE Service Manual GWC09AA / K5NNA6A Page 75... -
Page 76: Refrigerant Venting
OFDN; if not, then the system should be pressurised with OFDN and the venting procedure carried out two or more times, to ensure that there is minimal HC refrigerant remaining inside the system. GREE Service Manual GWC09AA / K5NNA6A Page 76... -
Page 77: Venting > Course Of Activities > Part 1
A flammable gas warning sign must be positioned close to the hose discharge port to indicate that there is an occurrence of flammable gas during venting ac- tivity. Stand Vent Line Recovery Cylinder with 2-Valve access GREE Service Manual GWC09AA / K5NNA6A Page 77... -
Page 78: Venting > Part 1 > Detailed Procedure
This process should be carried out until no flow of refrigerant is covery cylinder determined. Pressure at A, C is Zero. is needed! Close the low side valve A at the manifold gauge set. GREE Service Manual GWC09AA / K5NNA6A Page 78... -
Page 79: Venting > Course Of Activities > Part 2
A flammable gas warning sign must be positioned close to the hose discharge port to indicate that there is an occurrence of flammable gas during venting ac- tivity. Stand Vent Line GREE Service Manual GWC09AA / K5NNA6A Page 79... -
Page 80: Venting > Part 2 > Detailed Procedure
The recovery cylinder for “oil-separation” should be used regularly for this pur- metre safety pose since the contamination with oil will not classify this cylinder for further area. activities with refrigerant, if not cleaned inside professionally. GREE Service Manual GWC09AA / K5NNA6A Page 80... -
Page 81: In The Field
Regulators do not measure or control flow of the OFDN media unless the arrangement is equipped with devices (metering valve or flow meter) specially designed for those purpose. GREE Service Manual GWC09AA / K5NNA6A Page 81... - Page 82 ¼” SAE con- Connection to nection for pressure OFDN transfer regulator hose Working Pressure Cylinder Pressure Cylinder Connection Outlet Valve OFDN Transfer Pressure Regulator Hose Connection Pressure Adjusting Knob Example GREE Service Manual GWC09AA / K5NNA6A Page 82...
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Page 83: Flushing The System With Ofdn (N 2 )
The warning sign is still placed in the work-area because we are now handling a pressurised (about 250 bar) cylinder and OFDN gas is intentionally blown off from the system to the ambient area! Never switch ON the AC system if charged with OFDN! GREE Service Manual GWC09AA / K5NNA6A Page 83... -
Page 84: Flushing The System And Provision Of "Holding Charge" With
Close the OFDN cylinder valve. Return the pressure regulators adjust- for the time ing handle (screw) in its back-seated position. Purge the pressure being. regulator from the outlet-valve (pressure regulator is now discharged). GREE Service Manual GWC09AA / K5NNA6A Page 84... -
Page 85: Provision Of A Hermetically Sealed Refrigerant Circuit
General: The sole purpose of this section is to raise awareness of the different methods to ensure a sealed system, applicable for GREE Air–Conditioners and to assist in determining the most appropriate one to use in different situations. Best practice is... - Page 86 In general, the Gree Air–Conditioners are Factory Tested for compliance with If piping, compo- international standards and regulations. The factory test also includes a strength nents or areas are covered by test. The HC R-290 Air-Conditioner is rated for a Maximum Allowable Pressure oil, or you may (PS) of 40 bar (4.0 MPa).
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Page 87: Leak Check (Bubble Test)
4. In most cases for the purpose of leak testing, a safe pressure is usually about 10 bar (150 psig). Example of “Bubble Test” application and a commercially provided Leak Check fluid with Pin Brush GREE Service Manual GWC09AA / K5NNA6A Page 87... -
Page 88: Electronic Gas Detectors
Example of a Gas Detector, sure. designed and safe for the use with HC refrigerants This means leak detecting on the bottom sides of the piping or components can be effective. GREE Service Manual GWC09AA / K5NNA6A Page 88... -
Page 89: Leak Testing With Ofdn & Weak Soapy Water Solution
“Standing Pressure Test”. The stop-valve enables separate the gauge from the OFDN gas cylinder and to check the refrigerant circuit by pressurising with OFDN for “pressure fall” in a certain period of time. GREE Service Manual GWC09AA / K5NNA6A Page 89... -
Page 90: Leak Testing With Ofdn And "Bubbles" > Detailed Proce- Dure
H, L seated position) Close the OFDN cylinder valve. Return the pressure regulators adjust- ing handle (screw) in its back-seated position. Purge the pressure regulator from the outlet-valve (pressure regulator is now discharged). GREE Service Manual GWC09AA / K5NNA6A Page 90... -
Page 91: Trace Gas (N 2 /H 2 ) Leak Detection Method
Then check whether the device indicates a leak at the same spot again. Repeat this step up to three times. This will verify if a leak really ex- ists! Example of Leak Detector for Hydrogen Trace Gas GREE Service Manual GWC09AA / K5NNA6A Page 91... - Page 92 Never switch ON the AC system if charged with Trace Gas mixture! Cylinder filled with Nitrogen (N ) and Hydrogen (H mixture 95% / 5% GREE Service Manual GWC09AA / K5NNA6A Page 92...
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Page 93: Trace Gas Leak Detection > Detailed Procedure
Close the trace gas cylinder valve. Return the pressure regulators adjusting handle (screw) in its back-seated position. Purge the pres- sure regulator from the outlet-valve (pressure regulator is now dis- charged). GREE Service Manual GWC09AA / K5NNA6A Page 93... -
Page 94: Pressure Test (Strength Test) With Ofdn
In fact, this is not possible for the installed GREE AC units and, in specific for heat-pumps (not applicable here), is not necessary. The pressure in the system shall be built up gradually and monitored by remote gauge or other indicator located in a safe place. -
Page 95: Pressure Test (Strength Test) > Detailed Procedure
If a leak was found in step 12, repair the leak or replace the leaky in case of an component and continue with steps 5 and 7 to 14. inadvertent Close the outdoor units low-side and high-side stop valves (front-seated pressure burst. H, L position) GREE Service Manual GWC09AA / K5NNA6A Page 95... -
Page 96: Refrigerant Circuit-Evacuation And Charging
Manifold > Refrigerant Cylinder Connection Hose valve C > R-290 Cylinder Manifold (Vacuum Gauge) Connection Hose valve D > Vacuum Gauge Outdoor Unit Liquid Side (High) Outdoor Unit Gas Side (Low) Indoor Unit Outdoor Unit GREE Service Manual GWC09AA / K5NNA6A Page 96... - Page 97 6. For system evacuation, the vacuum pump should be connected and oper- ated at the low– and high-side of the system. The operation of a vacuum pump at the GREE HC Air-conditioner, the connection to the low-side only is possible (service port provision).
- Page 98 ⅜” and ¼” SAE male flare process) only connection use OFDN gas! Oil-mist Filter with Venting-Hose adapter Example Vacuum Pump Electronic Vacuum Gauge Example Vacuum Hose for Micron, Hg, mbar, Pa ⅜” with SAE connections indication GREE Service Manual GWC09AA / K5NNA6A Page 98...
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Page 99: Evacuation > Detailed Procedure
Check system or connections for leaks. The vacuum pressure stays stable. A, C, Closed manifold gauge valves (low-pressure, refrigerant charg- ing, vacuum gauge). Refrigerant circuit is evacuated and ready for charging with re- frigerant. GREE Service Manual GWC09AA / K5NNA6A Page 99... -
Page 100: Charging With Refrigerant
In case of lack of refrigerant! The operation of the GREE Air–conditioner is only permitted with the use of re- frigerant R-290 for this specific technology. Extreme care should be taken not to overfill the system. Topping up of the sys- tem with refrigerant is not permitted. -
Page 101: Charging With Refrigerant > Detailed Description
L & H H – while operational AC unit L – in “off“ mode General functional test of the system and system labelling. Fill Start-Up data sheet for “Service and Repair” works GREE Service Manual GWC09AA / K5NNA6A Page 101... -
Page 102: Start-Up Data Sheet Form For Service And Repair
Start Up Data Sheet for GREE Split Air-Conditioner—Service and Repair Installation Company Address Telephone & Fax Technician Name Registration No. Client / Company Contact Person Installation / Appliance DATA Model and No. Date of Installation / Repair Comments / Repair Operating Data –... -
Page 103: Service Label
0,20 Lubricant Type & Charge Date: Signature: If you leave the system, ensure that all valves are capped and tight (O-ring and gaskets); uncapped valves are a very common source of leakage! GREE Service Manual GWC09AA / K5NNA6A Page 103... -
Page 104: Dismantling, Recycling And Disposal
Dismantling, Recycling and Disposal At the end of the life cycle of the GREE HC R-290 Air–conditioner (discontinuation of operation, economically irreparable damage) the following general activities and precautions should be implemented: Avoid any hazards to operatives carrying out dismantling processes. -
Page 105: Error Codes, Led Flashing And Trouble Shooting
3. The wiring of the high pressure switch is loosened. High pressure switch is damaged or poorly contacted. 4. Insufficient or leaking out refrigerant. 5. The LPP input is at high level. GREE Service Manual GWC09AA / K5NNA6A Page 105... -
Page 106: Temperature Sensor Trouble Shooting
Trouble Shooting for the Temperature Sensor According to the below-provided diagram, identify the possible malfunction related to the tempera- ture sensor. GREE Service Manual GWC09AA / K5NNA6A Page 106... -
Page 107: Pg Motor (H6) Trouble Shooting
Trouble Shooting for the PG motor According to the below-provided diagram, identify the possible malfunction related to the indoor fan (PG motor) and “H6” error code indication. GREE Service Manual GWC09AA / K5NNA6A Page 107... -
Page 108: Jumper Cap (C5) Trouble Shooting
Trouble Shooting for Jumper Cap Malfunction According to the below-provided diagram, identify the possible malfunction related to the Jumper GREE Service Manual GWC09AA / K5NNA6A Page 108... -
Page 109: Freeze Protection (E2) Trouble Shooting
Trouble Shooting for Freeze Protection According to the below-provided diagram, identify the possible malfunction related to the freeze pro- tection and “E2” error code indication GREE Service Manual GWC09AA / K5NNA6A Page 109... -
Page 110: Low Pressure (E3) Trouble Shooting
Trouble Shooting for Compressor Low Pressure Protection According to the below-provided diagram, identify the possible malfunction related to the compressor low pressure protection and “E3” error code indication GREE Service Manual GWC09AA / K5NNA6A Page 110... -
Page 111: Pcb Board (U8) Trouble Shooting
Trouble Shooting for PCB According to the below-provided diagram, identify the possible malfunction related to the controller and “U8” error code indication GREE Service Manual GWC09AA / K5NNA6A Page 111... -
Page 112: Resistance Table For Temperature Sensors
Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Unit GREE Service Manual GWC09AA / K5NNA6A Page 112... - Page 113 Resistance Table of Heat-Exchanger Temperature Sensor for Indoor and Outdoor Unit GREE Service Manual GWC09AA / K5NNA6A Page 113...
- Page 114 Resistance Table of Compressor Discharge Temperature Sen- sor (Outdoor Unit) GREE Service Manual GWC09AA / K5NNA6A Page 114...
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Page 115: Main Spare-Parts List
Main Spare Parts List Below OEM parts should be provided only by GREE Electric Company or representatives. Other spare parts than OEM parts will violate the Air–Conditioner’s safety classification and certification status and may keep the unit in a dangerous operational situation! -
Page 116: Disassembling Procedures
Disassembling Procedures - Indoor Unit Be sure to wait 10 minutes or more after turning off all power supplies before starting disassembling works! GREE Service Manual GWC09AA / K5NNA6A Page 116... - Page 117 GREE Service Manual GWC09AA / K5NNA6A Page 117...
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Page 121: Disassembling The Outdoor Unit
Disassembling Procedures - Outdoor Unit Be sure to wait 10 minutes or more after turning off all power supplies before starting disassembling works! GREE Service Manual GWC09AA / K5NNA6A Page 121... - Page 122 GREE Service Manual GWC09AA / K5NNA6A Page 122...
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Page 126: Exploded Views And Part Lists
Exploded View of the GREE HC R-290 AC– Split System Indoor Unit GREE Service Manual GWC09AA / K5NNA6A Page 126... -
Page 127: Part List Of The Indoor Unit
Part List Indoor Unit GREE Service Manual GWC09AA / K5NNA6A Page 127... -
Page 128: Exploded View Of The Outdoor Unit
Exploded View of the GREE HC R-290 AC– Split System Outdoor Unit GREE Service Manual GWC09AA / K5NNA6A Page 128... -
Page 129: Part List Of The Outdoor Unit
Part List Outdoor Unit GREE Service Manual GWC09AA / K5NNA6A Page 129... -
Page 130: Recommended Equipment And Tools For The Use With Hc Refrigerants
Recommended Equipment and Tools for Hydrocarbon Refrigerants Servicing GREE Service Manual GWC09AA / K5NNA6A Page 130... - Page 131 GREE Service Manual GWC09AA / K5NNA6A Page 131...
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