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GREE                                               Photovoltaic Direct-driven Inverter Multi VRF Units 

297 

 

The part 

combining 

the building 

with 

photo-voltaic 

system   

Angle of the photo-voltaic cell 

array   

 

 

 

Overall situation of the building 

 

 

 

Waterproof of the rooftop 

 

 

 

Anchoring structure of the 

photo-voltaic system 

 

 

 

Stressed part of the building 

 

 

 

Surrounding of the photo-voltaic 

system   

 

 

 

 

 

Record of Maintenance 

 

Project name 

 

Contents 

 

 

 

 

 

 

 

                         Issuer:          Date: 

Results 

 

 

 

 

 

 

                          Maintainer:         Date: 

Acceptance 

inspection   

 

 

 

 

                           Inspector:            Date:           

 

Record of Acceptance Inspection

 

Project name 

 

Contents 

 

 

 

 

 

 

 

 

                          Issuer:            Date: 

Results 

 

 

 

 

           

                          Maintainer:          Date: 

Acceptance 

inspection 

 

 

 

 

 

                            Inspector:            Date:           

 
In the Photo-voltaic Direct-Driven Inverter Multi VRF System, the main parts of photo-voltaic system 

should be well-maintained, including the photo-voltaic cell array, photo-voltaic anti-lightning combining 
box, AC power distribution cabinet, and wires and cables between photo-voltaic parts. Most of the items 
of regular inspection on the photo-voltaic system relate to the operation and maintenance of these main 
parts, as described below.   

3.5.1 Photo

-voltaic Cell Array 

3.5.1.1 Operation and maintenance of photo-voltaic parts 

Operation and maintenance of photo-voltaic parts should comply with the following requirements:   
1 The surface of photo-voltaic parts should be kept clean. If you want to clean the surface, please 

note that:   

Summary of Contents for GMV5 Series

Page 1: ... Photovoltaic Direct driven Inverter Multi VRF GMV5 Solar For North America GC202005 I Capacity 72000Btu h 360000Btu h Rated Frequency 60Hz Operation Range Cooling 23 125 6 Heating 4 75 2 ...

Page 2: ...LLATION 17 1 ENGINEERING INSTALLATION PREPARATION 17 1 1 Installation Safety 17 1 2 Importance of Installation Engineering 17 1 3 Cooperation between Different Professions 18 1 4 Onsite Review of Design Drawing 21 1 5 Construction Organization Process 22 2 MATERIAL SELECTION 23 2 1 Requirement for Selecting Construction Materials 23 2 2 Requirement for Selecting Major Materials 23 3 INSTALLATION S...

Page 3: ...E REFRIGERANT SYSTEM 84 9 1 Air Tightness Test 84 9 2 Vacuumization and Desiccation for the System 85 10 REFRIGERANT PERFUSION 86 10 1 Calculation Method for Perfusing Refrigerant 86 10 2 Method for Perfusing Refrigerant 89 CHAPTER 3 COMMISSIONING OPERATION 92 1 SECURITY REQUIREMENTS 92 1 1 precautions for Construction 92 1 2 Precautions for the Use of Refrigerants 92 1 3 Function Settings of ODUs...

Page 4: ...r Unit Main Parts 284 3 4 Maintenance of Photovoltaic Parts 296 4 APPENDIXES 301 4 1 Minutes about a Debug Solution Confirmation Meeting 301 4 2 Visual Inspection Checklist of the Debug System 301 4 3 Debug Parameter Record List 302 4 4 Common Parameter Lists 303 4 5 Exploded Views and Spare Part List 313 ...

Page 5: ...pectives of engineering and installation commissioning and maintenance as well as basic principles and implementation methods Professional operators must abide by relevant national local safety requirements and technical specifications set forth in this manual during operations otherwise the air conditioning system may fail or be damaged and personnel safety accident may also occur ...

Page 6: ...ven in this manual and always use a special circuit If the power source capacity is inadequate or electric work is performed improperly electric shock or fire may result Ask the dealer or an authorized technician to install the air conditioner Improper installation by the user may result in water leakage electric shock or fire Always ground the product There is risk of fire or electric shock Alway...

Page 7: ...rant concentration from exceeding the safety limit when the refrigerant leaks Consult the dealer regarding the appropriate measures to prevent the safety limit from being exceeded Should the refrigerant leak and cause the safety limit to be exceeded hazards due to lack of oxygen in the room could result Operation Do not damage or use an unspecified power cord There is risk of fire electric shock e...

Page 8: ...y When installing the unit in a hospital communication station or similar place provide sufficient protection against noise The inverter equipment private power generator high frequency medical equipment or radio communication equipment may cause the air conditioner to operate erroneously or fail to operate On the other hand the air conditioner may affect such equipment by creating noise that dist...

Page 9: ...PP bands for a means of transportation It is dangerous Do not touch the heat exchanger fins Doing so may cut your fingers When transporting the outdoor unit suspending it at the specified positions on the unit base Also support the outdoor unit at four points so that it cannot slip sideways Do not touch any of the refrigerant piping during and after operation It can cause a burn or frostbite Do no...

Page 10: ...in parallel The operating principle is as follows When an IDU is operating in cooling mode the outdoor unit ODU can correspondingly enable the outdoor module based on the operating load requirement of the IDU The outdoor heat exchanger serves as a system condenser and the heat exchangers of cooling IDUs are connected in parallel to serve as a system evaporator The circulation of air supply and air...

Page 11: ...GREE Photovoltaic Direct driven Inverter Multi VRF Units 7 3 INTERNAL PIPING DESIGN OF THE UNITS 3 1 Piping Diagram of GMV Y72WM C F U GMV Y96WM C F U and GMV Y120WM C F U ...

Page 12: ...nd other control functions 11 Four way valve Used for the switching between the cooling and heating functions of system IDU 12 Heat exchanger Used for outdoor heat exchange 13 Fan Strengthens heat exchanging 14 Defrosting temperature sensor Used for defrosting detection 15 Electronic expansion valve for heating Controls refrigerant adjustment in heating mode 16 One way valve Controls refrigerant f...

Page 13: ...M C F U GMV Y96WM C F U GMV Y120WM C F U Module combinated Cooling capacity Btu h 72000 96000 120000 Heating capacity Btu h 81000 108000 135000 Air volume CFM 6710 8240 8240 Max external static pressure Pa 82 82 82 Noise sound level dB A 60 61 63 Power 208 240V 3 60Hz 208 240V 3 60Hz 208 240V 3 60Hz Input power for cooling kW 5 45 7 30 10 00 Input power for heating kW 5 80 7 85 10 50 Input current...

Page 14: ...nput power for cooling kW 5 45 5 45 5 45 7 30 7 30 7 30 Input power for heating kW 5 80 5 80 5 80 7 85 7 85 7 85 Input current for cooling A 16 42 16 42 16 42 20 37 20 37 20 37 Input current for heating A 17 29 17 29 17 29 23 50 23 50 23 50 MOP A 208V 45 45 240V 40 40 208V 45 45 240V 40 40 208V 45 45 240V 40 40 MCA A 208V 35 3 35 3 240V 30 3 30 3 208V 35 3 43 6 240V 30 3 37 3 208V 43 6 43 6 240V 3...

Page 15: ...7 87 27 87 27 87 17 29 23 50 23 50 MOP A 208V 45 45 240V 40 40 208V 45 45 240V 40 40 208V 45 45 45 240V 40 40 40 MCA A 208V 43 6 44 8 240V 37 3 39 8 208V 44 8 44 8 240V 39 8 39 8 208V 35 3 43 6 43 6 240V 30 3 37 3 37 3 Refrigeration oil no of compressor FVC68D or FV68H FVC68D or FV68H FVC68D or FV68H Ambient temperature range for cooling 23 125 6 23 125 6 23 125 6 Ambient temperature range of heat...

Page 16: ...45 45 45 240V 40 40 40 208V 45 45 45 240V 40 40 40 208V 45 45 45 240V 40 40 40 MCA A 208V 43 6 43 6 43 6 240V 37 3 37 3 37 3 208V 43 6 43 6 44 8 240V 37 3 37 3 39 8 208V 43 6 44 8 44 8 240V 37 3 39 8 39 8 208V 44 8 44 8 44 8 240V 39 8 39 8 39 8 Refrigeration oil no of compressor FVC68D or FV68H FVC68D or FV68H FVC68D or FV68H FVC68D or FV68H Ambient temperature range for cooling 23 125 6 23 125 6 ...

Page 17: ...fficient of short circuit current 0 059 Temperature coefficient of peak power and voltage 0 323 Dimension mm 1658 992 22 Weight kg 23 3 4 2 2 Current converting unit G IEMS Intelligent Converter GIE ADC12K5E Max PV Input Voltage OC 1000VDC Isc PV 39A Max continuous input current 2 14A Max PV Input Power 14kW MPPT Range 400V 780V Max DC continuous output current 25A Rated DC output Current 25A DC o...

Page 18: ...ower Supply Fuse Capacity Minimum Circuit Ampacity Maximum Overcurrent Protection V Ph Hz A A A GMV Y72WM C F U 240V 3 60Hz 40 30 3 40 GMV Y96WM C F U 240V 3 60Hz 40 37 3 40 GMV Y120WM C F U 240V 3 60Hz 40 39 8 40 GMV Y144WM C F U 240V 3 60Hz 40 40 30 3 30 3 40 40 GMV Y168WM C F U 240V 3 60Hz 40 40 30 3 37 3 40 40 GMV Y192WM C F U 240V 3 60Hz 40 40 37 3 37 3 40 40 GMV Y216WM C F U 240V 3 60Hz 40 4...

Page 19: ...GREE Photovoltaic Direct driven Inverter Multi VRF Units 15 6 Circuit Diagram 6 1 Circuit diagram of GMV Y72WM C F U ...

Page 20: ...ease strictly following the circuit diagrams when reconnecting the wires otherwise electric shock may occur 7 UNIT OPERATING TEMPERATURE Cooling Ambient temperature 5ºC 23ºF 52ºC 125 6ºF Heating Ambient temperature 20ºC 4ºF 24ºC 75 2ºF In the case of a full fresh air conditioning IDU the unit operating temperature is as follows Cooling Ambient temperature 16ºC 60 8ºF 45ºC 113ºF Heating Ambient tem...

Page 21: ...ocked air conditioning performance is reduced compressor wear is increased or even hinder the normal operation of the system and burn the compressor 3 The vacuum degree in the refrigerant pipe is insufficient The refrigeration performance is reduced The system fails to keep normal operation due to frequent protection measures When the problem getting serious compressor and other major components c...

Page 22: ... and the noise may annoy people in surrounding areas 18 Power cables are incorrectly provided Unit components may be damaged and potential safety hazard may occur 19 Control communication cables are incorrectly provided or improperly connected The normal communication in the system fails or the control over IDUs and ODUs turn in a mess 20 Control communication cables are not properly protected The...

Page 23: ... Air ducts and pressure pipes should leave places for gravity pipes 2 Air ducts and small pipes should leave places for major pipes 1 3 3 Requirements for cooperation with electric After the capacity of air conditioning unit is determined check the following aspects with relevant electric design personnel 1 Whether the electrical load is designed based on the requirement of the air conditioning un...

Page 24: ...lation Frame reinforcement Working drawing preparation Pipe laying Indoor unit installation Refrigerant piping Water drainage piping Piping Insulation Electric Outdoor unit foundation Outdoor unit installation Leakage test Vacuum dehumidification Refrigerant charging Decorative board installation Ceiling preparation Concrete engineering on the roof Indoor and outdoor spaces cleaning Pilot run afte...

Page 25: ...stem reliability can be affected Therefore relevant regulations on capacity limit must be strictly followed 2 The difference of level between an ODU and an IDU and that between IDUs must be set within the designed range 3 Pipe bend for trapped oil is required for air pipe riser in the unit to ensure normal circulation in the unit lubricating system 4 The pipe diameter and manifold type in the cool...

Page 26: ...nnecting the indoor unit and outdoor unit Pilot run check on indoor unit Connecting the indoor unit and outdoor unit Insulation Power cable connection Outdoor unit installation Connecting pipe installation Purging pressure maintaining and leak detection Welding Pressuremaintaining andleakdetection Vacuum pumping Refrigerant charging Open the valve Unitcommissioning As built drawing User manual del...

Page 27: ... powder carbon deposition rust dirt or severe oxide film and without obvious scratch pit spot and other defects 3 Test report Certifications and quality test reports must be provided 4 The tensile strength must be at least 240 kgf mm 5 Specifications requirement R410A Refrigerant System Outer Diameter mm in Wall Thickness mm in Type Φ6 35 1 4 0 8 1 32 O Φ9 52 3 8 0 8 1 32 O Φ12 7 1 2 0 8 1 32 O Φ1...

Page 28: ...nit m feet Wire size Remarks Light Ordinary polyvinyl chloride sheathed cord L 1000 3280 5 6 2 AWG18 1 If the wire diameter is enlarged to 2 AWG16 the total communication length can reach 1500m 4921 1 4feet 2 The cord shall be Circular cord the cores shall be twisted together 3 If unit is installed in places with intense magnetic field or strong interference it is necessary to use shielded wire 2 ...

Page 29: ...ng pressure shall not be lower than 3 8MPa 551psi But if local authority has a higher requirement please design and construct according to local safety standards Materials of communication cable shall be consistent with above requirements If there is conflict between these requirements and local relevant standards please contact the corresponding distributor and confirm it with headquarter The par...

Page 30: ...e elderly and infants live a higher refrigerating performance and noise control is required Therefore the ODU with excellent capacity and low noise is preferred in addition ODU should be installed in outdoor spaces instead of in bedrooms studies or meeting rooms In commercial areas ODU should be installed far away from offices 3 2 ODU Dimensions and Installation Hole Size External and installation...

Page 31: ...GREE Photovoltaic Direct driven Inverter Multi VRF Units 27 External and installation dimensions of GMV Y96WM C F U and GMV Y120WM C F U Unit mm in ...

Page 32: ...ent for ODU 1 If all sides of the ODU including the top are surrounded by walls process according to the following requirements for installation space 1 Installation space requirements for the single module unit Unit mm in 2 Installation space requirements for the dual module unit Unit mm in ...

Page 33: ...t top and the wall at least 3000mm 118 1 8in or above When the unit is located in a totally open space with no obstructions in four directions keep the distance between the unit top and wall at least 1500mm 59in or above See Fig 1 When space is limited within 1500mm 59in or the unit is not set in an open space air outlet pipe is required to be installed in order to keep good ventilation See Fig 2 ...

Page 34: ... make sure there is no obstruction above the unit When the unit is located at a half open space front and left right side is open install the unit as per the same or opposite direction Unit mm in 3 Considering the seasonal wind in outdoor unit installation Anti monsoon installation requirement for unit not connecting exhaust duct ...

Page 35: ...st 80 and the angle between the shutters and the horizontal plane should be less than 20 Requirements for installing exhaust air duct are as follows 1 Basic requirement for connecting an ODU to static pressure ventilating duct When an ODU needs to be connected to the static pressure ventilating duct the ventilating duct must be reasonably designed The pressure loss caused by the ventilating duct m...

Page 36: ... screwdriver 3 Basic operation of connecting an ODU to static pressure ventilating duct Two methods are available to connect an ODU to static pressure ventilating duct Method 1 1 Install the ODU 2 and steel plate ventilating duct 1 Use an air screw driver or screwdriver to unfasten the tapping screws that fixing the top case component 3 and then remove the top case component Take out the grille fr...

Page 37: ...ill holes and fasten the canvas casing onto the unit through steel bar by using tapping screws 3 Pull up the canvas casing reversely and use the steel bar to press the canvas casing tightly onto the counter flange of the steel plate ventilating duct Use a hand operated electric drill to drill holes and fasten the parts by using tapping screws 4 Use the tin foil to seal the joints and check the joi...

Page 38: ...The total air input of induced draft fan should be no less than 80 of the total supply air rate Be very careful while carrying the product Do not have only one person carry product if it is more than 20kg 44lbs PP bands are used to pack some products Do not use them as a mean for transportation because they are dangerous Do not touch heat exchanger fins with your bare hands Otherwise you may get a...

Page 39: ... have enough rigidity and strength to undertake the unit s weight during running The height of the foundation is 200 mm 7 87inch to 300 mm 11 8inch which is determined based on the size of the unit 2 The proportion of the cement sand and stone for the concrete is 1 2 4 Place 10 reinforced steel bars φ10 mm with a space between of 30 mm 3 Use the mortar to flatten the surface of the foundation Shar...

Page 40: ...Use drainage instead for liquid outlet The tube or pipe may freeze and the liquid may not be drained Be sure to remove the MDF wood support of the bottom side of the outdoor unit Base Pan before fixing the bolt It may cause the unstable state of the outdoor settlement and may cause freezing of the heat exchanger resulting in abnormal operations Be sure to remove the MDF wood support of the bottom ...

Page 41: ...GREE Photovoltaic Direct driven Inverter Multi VRF Units 37 5 PIPING CONNECTION 5 1 Schematic Diagram of Piping Connection ...

Page 42: ...GREE Photovoltaic Direct driven Inverter Multi VRF Units 38 5 2 Schematic Diagram of Piping Sequence GMV Y72WM C F U GMV Y96WM C F U and GMV Y120WM C F U ...

Page 43: ...Capacity GMV Y72WM C F U 13 36 0 97 2 GMV Y96WM C F U 16 48 0 129 6 GMV Y120WM C F U 19 60 0 162 0 GMV Y144WM C F U 23 72 0 194 4 GMV Y168WM C F U 29 84 0 226 8 GMV Y192WM C F U 33 96 0 259 2 GMV Y216WM C F U 36 108 0 291 6 GMV Y240WM C F U 39 120 0 324 0 GMV Y264WM C F U 46 132 0 356 4 GMV Y288WM C F U 50 144 0 388 8 GMV Y312WM C F U 53 156 0 421 2 GMV Y336WM C F U 56 168 0 453 6 GMV Y360WM C F U...

Page 44: ...branch to the farthest IDU L11 Length from the first branch to the nearest IDU Equivalent length of branch of IDU is 0 5m 1 3 4ft R410A Refrigerant System Allowable Value m ft Fitting Pipe Total length actual length of fitting pipe 1000 3280 3 4 L1 L2 L3 L4 L9 a b i j Length of farthest fitting pipe m ft Actual length 165 541 1 4 L1 L6 L7 L8 L9 j Equivalent length 190 623 1 4 Difference between th...

Page 45: ... IDU to the nearest IDU L10 L11 40m 131 1 4ft 2 When the maximum length of the main pipe from ODU to the first branch of IDU is 90m 295 1 4ft then adjust the pipe size of the gas pipe and liquid pipe of main pipe according to the following table Outdoor Model Gas pipe size mm in Liquid pipe size mm in GMV Y72WM C F U No need to enlarge pipe size No need to enlarge pipe size GMV Y96WM C F U No need...

Page 46: ... Pipe among Outdoor Modules Unit m ft NOTICE When the distance between outdoor units exceeds 2m 6 1 2ft U type oil trap should be added at low pressure gas pipe a c 10m 32 7 8ft b c 10m 32 7 8ft d 10m 32 7 8ft The pipeline between outdoor units should be installed as follows ...

Page 47: ...unit Pipe size of basic outdoor module is shown as follows Basic Module Pipe between ODU and the first branch of IDU Gas Pipe mm inch Liquid Pipe mm inch GMV Y72WM C F U Φ19 05 3 4 Φ9 52 3 8 GMV Y96WM C F U Φ22 2 7 8 Φ9 52 3 8 GMV Y120WM C F U Φ28 6 1 1 8 Φ12 7 1 2 2 For multi module unit select appropriate manifold connected to outdoor module as per the pipe size of basic module Pipe size of basi...

Page 48: ... total capacity of upstream modules Total capacity of upstream modules Q Btu h Pipe size between manifolds Gas pipe size mm in Liquid pipe size mm in 144000 Φ28 6 1 1 8 Φ12 7 1 2 168000 Φ28 6 1 1 8 Φ15 9 5 8 192000 Φ28 6 1 1 8 Φ15 9 5 8 216000 Φ28 6 1 1 8 Φ15 9 5 8 240000 Ф34 9 1 3 8 Φ15 9 5 8 Total capacity of upstream modules Q Btu h Pipe size between manifolds Gas Pipe mm inch Liquid Pipe mm in...

Page 49: ... first branch of IDU Gas Pipe mm in Liquid Pipe mm in GMV Y72WM C F U Φ19 05 3 4 Φ9 52 3 8 GMV Y96WM C F U Φ22 2 7 8 Φ9 52 3 8 GMV Y120WM C F U Φ28 6 1 1 8 Φ12 7 1 2 For multiple modules the piping from ODU to the first branch of IDU is based on the total rated capacity of outdoor modules Total rated capacity of outdoor modules multi modular system Pipe between ODU and the first branch of IDU Gas ...

Page 50: ...GMV Y312WM C F U Ф34 9 1 3 8 Ф19 05 3 4 GMV Y336WM C F U Ф34 9 1 3 8 Ф19 05 3 4 GMV Y360WM C F U Ф41 3 1 5 8 Ф19 05 3 4 5 Manifold at indoor unit side Manifold at indoor unit side can be selected as per total capacity of downstream indoor unit s Refer to the following table R410A Refrigerant System Total capacity of downstream indoor unit s C KBtu h Model Y type Manifold C 68 FQ01A A 68 C 102 FQ01...

Page 51: ...5 8 Φ9 52 3 8 48500 C 72000 Φ19 05 3 4 Φ9 52 3 8 72000 C 96000 Φ22 2 7 8 Φ9 52 3 8 96000 C 144000 Φ28 6 1 1 8 Φ12 7 1 2 144000 C 216000 Φ28 6 1 1 8 Φ15 9 5 8 216000 C 240000 Φ34 9 1 3 8 Φ15 9 5 8 240000 C 336000 Φ34 9 1 3 8 Φ19 05 3 4 336000 C Φ41 3 1 5 8 Φ19 05 3 4 7 Fitting pipe between indoor unit and manifold Manifold should be matched with fitting pipe of indoor unit Rated capacity of indoor ...

Page 52: ... leave places for gravity pipes 2 Air ducts and small pipes should leave places for major pipes 2 The refrigerant pipe layout must be optimal in actual engineering with minimum pipe length and bends In this way the performance of the unit can be maximized 3 The refrigerant pipe cannot affect air discharge and return of internal units The minimum distance between the refrigerant pipe with an insula...

Page 53: ...e pipe Allowable deviation Skewness of the cross section cannot exceed 1 of the copper pipe caliber If the copper pipe is not used immediately after cut off cover it with a sealing cap or adhesive tape 6 1 2 2 Pipe Cleaning Cleaning with a piece of silk cloth Wrap a thin steel wire with a piece of clean silk cloth Crumple the cloth into a lump with diameter larger than the pipe calibre Apply sever...

Page 54: ...e smooth pass of flaring nuts and avoid pipe distortion The lubricant must meet the refrigerant system s requirements The concentricity must be ensured after pipe flaring The sealing face must be intact without any burr crack or wrinkle Requirements on pipe flaring are as follows 1 End faces of the copper pipe are smooth 2 Burrs and turnups inside the pipe opening must be cleared 3 Install flaring...

Page 55: ... local regulations 6 Installing Expansion Bolts Use expansion bolts when built in metal fittings are unavailable due to design change If the foot pedal is 2 m 6 5feets or more from the ground there must be three points of support The foot pedal must be tightened securely with the ladder Do not perform operations on the top of the ladder 6 1 3 3 Shaping and Fixing of Pipes When installing refrigera...

Page 56: ...gth specified below A External Diameter of the Pipe B Minimum Insertion Depth D A Gap between Pipes mm in mm in mm in Φ6 35 Φ1 4 6 0 24 0 05 0 21 0 002 0 008 Φ9 52 Φ3 8 7 0 28 Φ12 7 Φ1 2 Φ15 8 Φ5 8 8 0 32 0 05 0 27 0 002 0 01 Φ19 05 Φ3 4 10 0 39 Φ22 2 Φ7 8 Φ25 4 Φ1 Φ28 6 Φ1 1 8 12 0 47 0 05 0 30 0 002 0 012 Φ31 8 Φ1 1 4 Φ38 1 Φ1 1 2 19 0 75 0 15 0 35 0 006 0 014 Φ44 5 Φ1 3 4 3 Bell Socket Welding ...

Page 57: ...nstallation The three ports must be on the same level The shaping size and assembly angle cannot be changed 2 Vertical installation The direction can be upwards or downwards Three ports must be on the same elevation without inclination 3 The length of a straight pipe between two manifolds cannot be less than 500 mm 19 11 16in 4 The length of a straight pipe before the main pipe port of the manifol...

Page 58: ...n on the main inlet manifold from the welding point Fixing point 2 200mm 7 7 8in on the main branched pipe from the welding point Fixing point 3 250mm 9 5 6in on the branched pipe from the welding point Unit mm in Branches of a manifold must be laid parallel and cannot be wrapped in superimposed mode 6 T type manifold can be laid in the following ways 1 T type manifold must be installed horizontal...

Page 59: ...liquid side A view within 10 within 10 B view gas side liquid side 2 The length of a straight pipe between T type manifold pipe and Y type manifold pipe cannot be less than 500 mm 19 11 16in Unit mm in 3 The length of a straight pipe between the T type manifold pipe and the IDU cannot be less than 500 mm 19 11 16in 4 Suspend the header to the ceiling and be sure to install it so that the outlet pi...

Page 60: ...nect with Y type manifold pipe and T type manifold pipe Equivalent length of one Y type manifold pipe is about 0 5m 19 11 16in Equivalent length of branch of IDU is 0 5m 19 11 16in 6 Min Max Number IDUs connectable with each T Type manifold pipe Min Number IDUs Max Number IDUs FQ14 H1 2 4 FQ18 H1 4 8 FQ18 H2 4 8 ...

Page 61: ...en insert the copper pipe to proper depth A concave bag for positioning is available to the manifold purchased from Gree 9 Because the manifold structure is complex perform with care to ensure tight insulation 6 1 3 7 Pipe Cleaning by Nitrogen Before connecting the flare opening of the pipe to the IDU connect the pressure regulator valve on the nitrogen cylinder to the liquid pipe in the outdoor p...

Page 62: ...position relatively close to the ODU and easy for operation Second install a filter 100 mesh ft2 between the added stop valve outside the gas pipe and the stop valve of the ODU Then install a drier filter between the added stop valve outside the liquid pipe and the stop valve of the ODU Lastly after the test run is complete To remove the filter from the gas pipe after starting all IDUs and keeping...

Page 63: ...ent rain water from pouring in and cause property loss or personal injury 3 Condensate drain pipe should be connected into special drain system for air conditioner 4 Determine the direction and elevation of a condensate water pipe before installing it Avoid overlapping it with other pipes to ensure straight inclination The clamp of the pipe hanger is fixed outside the insulation layer The height o...

Page 64: ...ct the inclination degree of the pipe Fill the gap between the pipe and the sleeve with flexible and non flammable materials The sleeve cannot be used as a support point of the pipe 12 Bond the insulation material joints with special glue and then wrap them with plastic adhesive tape The width of the adhesive tape must be 50mm 1 97inch or more to prevent dewing 6 2 3 Other Requirements 1 Ensure an...

Page 65: ... of the IDU fix the pipes with the bands instead of using the glue to facilitate further maintenance 3 There is a condensate water outlet on both sides of the IDU After one condensate water outlet is determined use the rubber stopper to block the other outlet Tie it with threads and strap with insulation materials to prevent leakage 4 The connection between the drain pipe and that of the IDU is sh...

Page 66: ...is used the drain pipe of each IDU must be higher than the header pipe 3 The diameter of the header pipe must be determined on the number and capacity of IDUs 4 When installing pipe start from the highest point of the pipe and follow the specified inclination to smoothly discharge condensate water 5 Connect branches to the main pipe from the upper part or side instead of lower part of the main pip...

Page 67: ...s shown in the following figure 6 4 2 Insulation for the Condensate Water Pipe System 6 4 2 1 Thickness of the Insulation Layer Thickness of the insulation layer for the condensate water pipe must be greater than 10 mm 0 39inch 6 4 2 2 Bond the insulation material joints with special glue and then wrap them with plastic adhesive The width of the adhesive must be greater than 50mm 1 97inch to preve...

Page 68: ...ion site may require attachment of an earth leakage breaker If no earth leakage breaker is installed it may cause an electric shock Do not use anything other than breaker and fuse with correct capacity Using fuse and wire or copper wire with too large capacity may cause a malfunction of unit or fire 7 1 Precautions The power cable and communication cable can be identified in the following ways Met...

Page 69: ...earth Do not connect earth line to any gas pipe liquid pipe lightening rod or telephone earth line If earth is incomplete it may cause an electric shock 3 The yellow green cable inside the air conditioning unit is a grounding cable It cannot be used for other purposes or be cut off Do not fix it with tapping screws Otherwise an electric shock may be caused 4 A reliable ground terminal must be prov...

Page 70: ...ed controller Wired controller QF QF QF PV1 PV1 PV2 PV2 ODU 1 PV Array Power cord Remote monitor D1 D2 G1 G2 COMMUNICATION Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage Communication disorder by noise effect and motor current leakage without connection to pipe Don t install an individual switch or electrical outlet to disconnect each of indoo...

Page 71: ...MUNICATION D1 D2 G1 G2 COMMUNICATION D1 D2 H1 H2 COMMUNICATION PV Array Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage Communication disorder by noise effect and motor current leakage without connection to pipe Don t install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply Install the...

Page 72: ... the power cable and the grounding cable to L1 L2 L3 on the power terminal block and the grounding screw next to the terminal block respectively 2 Fasten and fix the power cable with ties support heads 3 Lay the power cable and communication cable for the ODU according to the marker of external connection circuit diagram NOTICE Provide a threading rubber ring when threading a strong power cable or...

Page 73: ...voltaic Direct driven Inverter Multi VRF system Manual DIP or identification on polarities of the communication power is not required for the IDU Only the function DIP needs to be set for the ODU For details see the description on function setting of the ODU 7 3 1 Connection of Communication Cable Terminals All communication wires are connected by screws ...

Page 74: ...i VRF Units 70 7 3 2 Connection of Communication Cables The communication bus of indoor and ODUs must be connected in series instead of in star mode The last IDU of the bus shall be connected to a matching resistor placed in the package of the ODU ...

Page 75: ...between the IDUs and ODUs The communication cable between the IDUs and ODUs is connected via interface D1 D2 on the terminal block XT2 Connection modes for the single module system and multi module system are shown in the following figures Communication cable connection for the single module system Communication cable connection for the multi module system ...

Page 76: ...ave unit is set by SA8 on the main board of the ODU The communication cable and power cable must be laid separately to avoid interference The communication cable must be long enough to avoid joints Indoor units must be connected in series The last IDU shall be connected to a matching resistor placed in the package of the ODU 7 3 3 2 Communication cable connection between the IDU and wired controll...

Page 77: ...e within a same IDU network No matter when unit is turned on or off slave controller can be set How to set a slave controller hold function button on the designated controller for 5s and temperature zone displays C00 Continue holding function button for 5s and setting screen of controller parameter will come out Default temperature zone displays P00 Press button or button to select parameter code ...

Page 78: ...SP1 direct to 8 core interface DISP2 direct to 9 core interface Fig 54 1 Wired controller and light board remote receiver can be used at the same time 2 When light board remote receiver is used please use remote controller at the same time 8 Installation of Photovoltaic System 8 1 Notice for Installation Improper operation or not following operation instruction may cause safety hazards and serious...

Page 79: ...structions and installation documents 5 Grid parameter configuration Detailed instructions Step 1 make sure the engineering connection of air conditioning system is normal Refer to the grid parameter configuration in the owner s manual Step 2 Energize the indoor unit and outdoor unit for the first time The master controller enters grid configuration selection mode LED1 function code qp on Step 3 U...

Page 80: ...des the installation of Photovoltaic Array and GMV the lay out of cable and power device 8 2 1 Installation of Photovoltaic Support Bracket The photovoltaic support bracket shall be inspected by Party A and professional supervision unit before installation The material of support shall be aluminium alloy or hot galvanizing steel During installation please avoid scratching to the aluminium alloy su...

Page 81: ...shall be protected by steel pipe when crossing the road The pipe port shall be deburred to avoid cutting the cable during pulling During laying wire make sure the wire size according to the diagram Before laying check if the insulation resistance is in normative range with megameter The cable shall be protected by HDPE plastic pipe when passing through the photovoltaic sub assy and junction case T...

Page 82: ...nical linkage 8 2 5 Installation of Intelligent Converter Step 1 Use a cross screwdriver to loosen the panels of the air conditioner unit and remove the panels GMV Y72WM C F U GMV Y96WM C F U and GMV Y120WM C F U Step 2 Knock down the sheet metal bracket from the air conditioner with the sleeve tool and put the two bolts into the packaged materials of the air conditioner The method is provided as ...

Page 83: ...20WM C F U Step 3 Remove the Intelligent Converter from the box and remove bolts four M5X30 bolts and two M6X16 bolts and nuts two M6 nuts from the packaged materials of the air conditioner Then assemble the sheet metal bracket to the Intelligent Converter and the assembly method is provided as follows ...

Page 84: ...GREE Photovoltaic Direct driven Inverter Multi VRF Units 80 Step 4 Place the Intelligent Converter upstanding and put into the air conditioner unit GMV Y72WM C F U GMV Y96WM C F U and GMV Y120WM C F U ...

Page 85: ...Multi VRF Units 81 Step 5 In order to fix the Intelligent Converter a total of 11 M6 bolts are needed You are advised to get these bolts from the packaged materials of the air conditioner and fix the bolts with the sleeve tool GMV Y72WM C F U ...

Page 86: ...GREE Photovoltaic Direct driven Inverter Multi VRF Units 82 GMV Y96WM C F U and GMV Y120WM C F U Step 6 Assemble the panels after wiring GMV Y72WM C F U ...

Page 87: ...GREE Photovoltaic Direct driven Inverter Multi VRF Units 83 GMV Y96WM C F U and GMV Y120WM C F U ...

Page 88: ... test is being performed The test pressure for R410A system is 4 0 MPa Use dry nitrogen as media for the air tightness test Increase the pressure slowly by following the steps below Step 1 Increase the pressure to 0 5 MPa Stop for 5 minutes and then perform air tightness check Major leakage may be detected Step 2 Increase the pressure to 1 5 MPa Stop for 5 minutes and then perform air tightness ch...

Page 89: ...nect the regulator valve and vacuum pump to detection connectors of the gas pipe and liquid pipe 3 Vacuumize for 4 hours and check whether the vacuum degree reaches 0 1 MPa or more If not leakage may exist Perform leakage check again If no leakage exists continue to vacuumize for 2 hours 4 If the vacuum degree cannot be kept after vacuumization is performed for twice there may be water in the pipe...

Page 90: ...rged refrigerant before delivery Charge additional refrigerant for field installed connecting pipe If the pipeline is longer than 1m 39 3 8in please refer to the following table for charging amount of refrigerant Liquid pipe prevails How much additional refrigerant should be charged Total refrigerant charging amount R Pipeline charging amount A charging amount B of every module 1 Pipeline charging...

Page 91: ... h IDU ODU rated capacity collocation ratio C 48 7 72 120 120 108 The quantity of included IDUs is more than 4 sets Please refer to the above table Refrigerant charging amount B for 72kBtu h module is 4 0kg 8 8pounds Refrigerant charging amount B for 120 kBtu h module is 4 0kg 8 8pounds Refrigerant charging amount B for 120 kBtu h module is 4 0kg 8 8pounds So Σ Refrigerant charging amount B of eve...

Page 92: ...involved can be stifled by the refrigerant For example the maximum allowed concentration level of refrigerant to a humanly space for R410A according to the appropriate European Standard is limited to 0 44 kg m3 The maximum amount of refrigerant kg in the system The volume of the room m3 The maximum allowed concentration level of refrigerant kg m3 Total amount of refrigerant kg in the system Total ...

Page 93: ...ter vacuumization and desiccation are finished turn off valves of the high pressure gauge and low pressure gauge Disconnect the medium gauge pipe from the vacuum pump and connect it to the refrigerant tank Step 3 Properly loosen the joint between the medium gauge pipe and the pressure gauge and slightly turn on the valve of the refrigerant tank Vacuumize the medium gauge pipe After that fasten the...

Page 94: ... there is no sufficient refrigerant and the calculated quantity of refrigerant is not fulfilled for the system record the current total perfusion quantity m m1 m2 m3 m4 mn 1 mn Quantity of refrigerant to be perfused during running m M m M is the required total quantity If the pre perfusion quantity m reaches the required total quantity for the system turn off the valve of the refrigerant tank imme...

Page 95: ...ill commissioning is automatically is completed for the system Step 6 Remove the pressure gauge to finish refrigerant perfusion Because R410A is a mixture of refrigerant therefore it must be charged in a liquid form Otherwise unit will not work stably and effectively Do not expose the R410A refrigerant tank to direct sunlight Otherwise the internal pressure may get too high and cause explosion Pip...

Page 96: ...rity operation requirements Rule breaking operations are prohibited 1 2 Precautions for the Use of Refrigerants The Photovoltaic Direct driven Inverter Multi VRF serial unit is a refrigerating system of R410A working substances Pay attention to the following points The refrigerating system of R410A working substances has a higher working pressure than that of R22 working substances The working pre...

Page 97: ... SA5_F AN E Fan emergency operation DIP switch Provides aftersales emergency settings for fans 00 It is better not to use the emergency function Replace relevant parts of the fan at the first time when an exception occurs SA6_E SP_S Outdoor fan static pressure setting DIP switch Sets the static pressure of the fan according to the static pressure of the exhaust pipeline connected with the engineer...

Page 98: ...ol between multiple refrigerating systems set the DIP switch according to the following methods 1 The DIP switch must be set on the master unit Otherwise the setting is invalid 2 On the same refrigerating system the centralized control address DIP switch SA2_Addr CC on a non master unit is invalid and it is unnecessary to change the settings 3 The centralized control address DIP switch SA2_Addr CC...

Page 99: ...pressors the compressor emergency operation DIP switch SA3_COMP E is used for aftersales emergency settings when an exception occurs on a compressor It can shield the operation of the abnormal compressor in a short time and guarantee the emergency operation of other compressors When it is required to shield the operation of 2 6 compressors upon failure set the DIP switch according to the following...

Page 100: ... to left facing the front of the unit 1 3 1 4 1 Compressor Module Emergency Operation DIP Switch SA4_I M E The 1 compressor module emergency operation DIP switch SA4_I M E is used for aftersales emergency settings when an exception occurs on the 1 compressor module It can shield the operation of the abnormal compressor module in a short time and guarantee the emergency operation of other compresso...

Page 101: ...us Once 48 hours are exceeded the entire unit will be forcibly stopped and the limited operation code Ad is displayed on the IDU 1 6 compressors are defined from right to left facing the front of the unit 1 3 1 5 Fan Emergency Operation DIP Switch SA5_FAN E The fan emergency operation DIP switch SA5_FAN E is used for aftersales emergency settings when an exception occurs on a dual module fan It ca...

Page 102: ... 7 Reserved Function DIP Switch SA7 SA7 is the reserved function DIP switch and meaningless currently 1 3 1 8 Master Unit Setting DIP Switch SA8_MASTER S The master unit setting DIP switch SA8_MASTER S defines module management of a system A master unit must be set and only one master unit can be set in each refrigerating system in power off status The setting methods are as follows Master Unit Se...

Page 103: ...and the other two modules to sub modules The settings are as follows 1 3 2 System Function Button Operations Module c master module Modules a and b submodules White lever position White lever position ON 0 0 SA8_MASTER S White lever position White lever position ON 1 0 SA8_MASTER S Note System function settings and query must be performed after commissioning of the entire unit System function sett...

Page 104: ...oise requirements 00 No silent settings It can be set and queried A8 Aftersales vacuuming mode Automatically enables all electronic expansion valves and electromagnetic valves during maintenance to guarantee vacuum processing in all pipelines It can only be set n0 Conservation control 1 Automatically decreases the power consumption of the unit according to system operation parameters 01 No automat...

Page 105: ...DU automatically starts and recovers refrigerants to the ODU or IDU pipeline 2 A6 Unit cooling heating function This function sets operation modes of the entire unit including Function Mode of ODU Operation Mode of IDU Code Name nA Cooling Heating Cooling mode dehumidifying mode heating mode and air supply mode Note The heating mode cannot work with other modes at the same time factory settings nC...

Page 106: ...tory setting is 00 After silent mode is set unit s cooling and heating capacity will be lowered correspondingly Please be noted 4 A8 Aftersales vacuuming mode This function ensures the vacuum degree of the entire system during maintenance to prevent operation functions of dead zones Expansion valves and electromagnetic valves of the unit will be enabled after this function is set 5 n0 Conservation...

Page 107: ...his function queries operation parameters of each module of the ODU in real time 11 n8 Indoor unit address query This function queries addresses of all IDUs through one operation of the ODU 12 n9 Online IDU quantity query This function queries the number of online IDUs through the ODU 1 3 3 Function Setting Operations Step 1 Open the commissioning window of the master unit panel Step 2 Power on th...

Page 108: ...llows LED1 LED2 LED3 Function Code Display Mode Silent Mode Code Display Mode Current Status Display Mode A7 On 00 Blinking OC Blinking Step 2 Select a corresponding silent mode by pressing SW1 UP or SW2 DOWN LED1 LED2 LED3 Function Code Display Mode Silent Mode Code Display Mode Current Status Display Mode A7 On 00 Blinking OC Blinking A7 On 01 Blinking OC Blinking A7 On 02 Blinking OC Blinking A...

Page 109: ...isplay Mode ODU Function Mode Code Display Mode A6 On nC Blinking nC Blinking Step 2 Select a corresponding cooling heating function by pressing SW1 UP or SW2 DOWN LED1 LED2 LED3 Function Code Display Mode ODU Function Mode Code Display Mode ODU Function Mode Code Display Mode A6 On nC Blinking nC Blinking A6 On nH Blinking nH Blinking A6 On nA Blinking nA Blinking A6 On nF Blinking nF Blinking St...

Page 110: ...n the low pressure value displayed on LED3 continually blinks quickly close air tube stop valves of all basic modules and then press SW7 on the master unit to confirm completing refrigerant recovery or power off the entire unit If no operations are performed after the low pressure value displayed on LED3 continually blinks for three minutes the entire unit will be forcibly stopped On the master un...

Page 111: ...tem vacuuming mode settings Step 2 Press SW7 to confirm entering the to be confirmed status of system vacuuming mode settings All modules are displayed as follows LED1 LED2 LED3 Function Code Display Mode Current Progress Display Mode Current Status Display Mode A8 On 00 On OC On Expansion valves and electromagnetic valves of all outdoor and IDUs are opened and the entire unit cannot be enabled Pr...

Page 112: ... The master unit is displayed as follows LED1 LED2 LED3 Function Code Display Mode Highest Output Capacity Display Mode Current Status Display Mode n4 On 10 Blinking OC Blinking Step 2 Select a corresponding capacity limitation value by pressing SW1 UP or SW2 DOWN LED1 LED2 LED3 Function Code Display Mode Highest Output Capacity Display Mode Current Status Display Mode n4 On 10 Blinking OC Blinkin...

Page 113: ...lay Mode A6 On nA On nA On ED1 LED2 LED3 Function Code Display Mode Current Progress Mode Display Mode Current Status Display Mode n8 Blinking 00 Blinking 00 Blinking Press SW7 and select the IDU project number query on the master unit The master unit is displayed as follows Other modules are displayed in normal status LED1 LED2 LED3 Function Code Display Mode Current Progress Mode Display Mode Cu...

Page 114: ...lure between the master unit and inverter compressor driver E2 Discharge low temperature protection P8 Over high temperature protection for inverter compressor driver module E4 Compressor high discharge temperature protection P7 Temperature sensor failure of inverter compressor driver module J1 Compressor 1 overcurrent protection PF Charge circuit failure of inverter compressor driver J9 Over low ...

Page 115: ... module confirmation status for parameter query The display is as follows LED1 LED2 LED3 Function Code Display Mode Module Address Display Mode Current Status Display Mode n7 On 01 Blinking 00 Blinking n7 On 02 Blinking 00 Blinking n7 On 03 Blinking 00 Blinking n7 On 04 Blinking 00 Blinking Select a module for parameter query by pressing SW1 UP or SW2 DOWN and then press SW7 The display is as foll...

Page 116: ...26 Outdoor unit heating EXV2 PLS 27 Subcooler EXV PLS 28 Defrosting temperature C 29 Liquid extracting temperature of subcooler C 30 Outlet temperature of accumulator C 31 Oil return temperature C This parameter is invalid for the GMV5 series 32 Inlet tube temperature of condenser C This parameter is invalid for the GMV5 series 33 Outlet temperature of condenser C This parameter is invalid for the...

Page 117: ...1 or SW2 The display sequence is as follows Entire unit bar code bits 1 13 and controller bar code bits 1 13 that is entire unit bar code header entire unit bar code bits 1 6 entire unit bar code bits 7 12 entire unit bar code bit 13 controller bar code header controller bar code bits 1 6 controller bar code bits 7 12 controller bar code bit 13 The display is as follows LED1 LED2 LED3 Parameter Co...

Page 118: ...d Remark Starting engineering commissioning Press and hold SW7 on the master unit for more than five seconds Selecting no wired controller commissioning mode Press SW4 and SW5 simultaneously in any commissioning progress after the unit enters the commissioning status In this mode the system does not detect the communication status between the IDU and wired controller any more Commissioning can be ...

Page 119: ...rrect unit will run abnormal and compressor may even be damaged 2 COMMISSIONING PROCESS NOTICE It is forbidden to directly connect the compressor with power supply and forcibly power it on during commissioning and maintenance Engineering commissioning operations must be performed on the Photovoltaic Direct driven Inverter Multi VRF serial unit Otherwise the unit cannot properly run Before commissi...

Page 120: ...sioning system appearance check record tables commissioning data record tables and commissioning reports See attached tables for file formats 2 3 Engineering Commissioning Procedures 2 3 1 Pre commissioning Preparations 2 3 1 1 Overall Commissioning Plan Before commissioning the person in charge should learn about the overall engineering progress plan overall workload of engineering commissioning ...

Page 121: ...re that the stop valve of each module reaches the maximum opening degree Check whether there is any refrigerator oil leakage around the valve If there is immediately check for leakage with soap bubbles or leak detectors If confirming that leakage exists immediately stop commissioning and solve the problem before continuing commissioning Does the stop valve of outdoor unit reach the maximum opening...

Page 122: ...ariable frequency drives nor reside near the equipment generating high electromagnetic interference Otherwise the air conditioning unit may fail to properly work due to interference If this case exists records should be made In the case of serious influence the air conditioning unit must be relocated or relevant measures must be taken b Prevent acidic or alkaline gas liquid from rusting cables of ...

Page 123: ...cale unit power cable terminals of the patch panel and cable terminals connected with connectors must be tightened with a sleeve spanner or screwdriver and tightened once more after two months of normal operation Auxiliary contacts of AC connectors cannot be removed because they have been debugged upon factory departure 6 Check the input power a Power consistency check Measure the power supply to ...

Page 124: ...Qualified 1 Is the engineering design diagram complete 2 Does the construction comply with the design diagram 3 Is the rated capacity of the IDU ODU of a single refrigerating system within 50 135 4 Is the number of connected IDUs in a single refrigerating system within 80 5 Is the access capacity of a fresh air unit within 30 6 Does the difference of level between IDUs and ODUs comply with unit de...

Page 125: ... return 29 Is the water pipe of IDU installed with an air exhaust vent 30 Is MASTER stuck to the wired controller or panel of the master IDU 31 Does appending refrigerants to the system comply with requirements 32 Does the ODU run with static pressure Has a static pressure value been set 33 Has the ODU been preheated for more than eight hours before commissioning 2 3 3 Commissioning Operation 2 3 ...

Page 126: ...missioning status db On 01 On CC On The system does not set any master unit and a master unit should be set db On 01 On CF On The system sets more than two master units and a master unit should be set again db On 01 On OC On The system successfully sets a master unit and automatically enters the next step 02_Unit address assignment db On 02 On Ad Blinking The system is assigning addresses db On 02...

Page 127: ... seconds For example if a d5 fault occurs on IDU 100 LED3 will circularly display 01 00 two seconds later and d5 two seconds later db On 07 On OC On The system detects that no IDU component fails and automatically enters the next step 08_Compressor preheating confirmation db On 08 On U0 On The system gives a prompt if the compressor preheating period is less than eight hours db On 08 On OC On The ...

Page 128: ...g mode commissioning operation the system automatically selects the commissioning operation mode without needing manual settings db On 16 On Corresponding fault code On A fault occurs on the heating mode commissioning operation db On 16 On J0 On A fault occurs on other modules during the heating mode commissioning operation db On 16 On U9 On A fault occurs on ODU pipes or valves db On 16 On XXXX U...

Page 129: ... static pressure design requirements for outdoor engineering For details about the setting method see the Outdoor Fan Static Pressure Setting DIP Switch SA6_ESP_S section If there are not static pressure requirements retain the factory settings Step 3 In power off status of ODU set one module of ODU to master unit and other modules to sub modules For details about the setting method see the Master...

Page 130: ...it Setting DIP Switch SA8_MASTER S section Then enter unit commissioning again Exception 2 If no master IDU is detected in step 02 the following faults are displayed in step 02 LED1 LED2 LED3 Function Code Display Mode Current Progress Display Mode Current Status Display Mode db On 02 On L7 Blinking In this case all buttons are invalid Users can set the master IDU through the commissioning softwar...

Page 131: ... Blinking If the displayed quantity is consistent with the number of actually connected modules press SW7 on the master unit to confirm The main board is displayed as follows and the unit automatically enters the next commissioning step Progress Commissioning Code Progress Code Status Code LED1 LED2 LED3 Code Display Status Code Display Status Code Display Status 04_Indoor unit quantity confirmati...

Page 132: ... Status Code Display Status 06_Component detection for ODU db On 06 On OC On The system detects that no ODU component fails and automatically enters the next step If an exception is detected the unit retains the current status and waits for manual troubleshooting Corresponding faults include Progress Commissioning Code Progress Code Status Code Meaning LED1 LED2 LED3 Code Display Status Code Displ...

Page 133: ...ours and automatically enters the next step If it is detected that the compressor preheating period is less than eight hours an exception is prompted and the main board is displayed as follows Progress Commissioning Code Progress Code Status Code Meaning LED1 LED2 LED3 Code Display Status Code Display Status Code Display Status 08_Compressor preheating confirmation db On 08 On U0 On The system giv...

Page 134: ... Status Code Display Status 10_Pre startup ODU valve status detection db On 10 On U6 On It is required to check again whether the ODU valves are completely opened After confirming that all valves are completely opened press SW7 to enter the next commissioning step If it is detected that the unit valve status is normal the main board is displayed as follows and the unit automatically enters the nex...

Page 135: ...displayed as follows Progress Commissioning Code Progress Code Status Code Meaning LED1 LED2 LED3 Code Display Status Code Display Status Code Display Status 15_Cooling commissioning operation db On 15 On AC On The system is in cooling mode commissioning operation the system automatically selects the commissioning operation mode without needing manual settings db On 15 On Corresponding fault code ...

Page 136: ... seconds later and U8 two seconds later Step 18 If no exception occurs when the unit continuously operates for 60 minutes the system automatically confirms commissioning completion stops the entire unit and restores the standby status The main board is displayed as follows Progress Commissioning Code Progress Code Status Code Meaning LED1 LED2 LED3 Code Display Status Code Display Status Code Disp...

Page 137: ... Switch SA8_MASTER S section Step 5 Power on all outdoor and IDUs In this case all modules of ODU display that the unit is in non commissioning status Step 6 Switch the commissioning software to the commissioning control interface Click Debug to switch to the engineering commissioning interface The unit will automatically operate the commissioning modules listed in this interface from top to botto...

Page 138: ...g the next commissioning step Click to display relevant information detected on this phase which provides references for selection Click Close to close the information the number of commissioning units is displayed in 3 Confirm ODU Basic Module NO and 4 Confirm IDU NO the preheating period is displayed in 8 Compressor Preheat Confirmation ...

Page 139: ...nters the next step if no OK exists or click OK to enter the next step Click to display relevant information detected on this phase which provides references for troubleshooting Click Close to close the information During commissioning click Stop to stop commissioning and then click Start to continue commissioning till commissioning ends Back and Skip are provided in 10 ODU Valves Check Before ...

Page 140: ... again for step 10 If a U6 fault valve exception occurs in step 10 users can click Skip to skip the fault For other faults Skip is unavailable Commissioning steps 11 13 and 14 are reserved Steps 13 14 15 and 16 are parallel steps one of the four steps will be selected according to the actual unit At last engineering commissioning is completed when is displayed on Project Debug Completion ...

Page 141: ...ol Please refer to the operation manual of Portable Commissioning Tool for the connection method Step 2 Setting DIP of ODU address You must set this DIP in main control ODU The setting code SA8 of main control unit shall be set to 00 Otherwise it is invalid Step 3 On the home page press Unit Debug to enter into the page of engineering debugging Step 4 On the engineering debugging page click Startu...

Page 142: ...arning After finishing operating this product the wiring of air conditioner must be resumed Otherwise it may affect the actual operation of user 2 3 3 4 Operations after Commissioning Sort and save data Make detailed records of exceptions and troubleshooting methods during commissioning for later maintenance and query At last make a commissioning report and hand it over to users 2 3 3 5 Precaution...

Page 143: ...stem low pressure C When the system runs for cooling with the environment temperature being 25 35 C 77 95 the system low pressure value is 0 8 C 32 46 When the system runs for heating with the environment temperature being 5 10 C 23 50 the system low pressure value is 15 5 C 5 41 6 Opening degree of heating electronic expansion valves PLS During the cooling operation the heating electronic expansi...

Page 144: ... The drainage effect of IDU is smooth and thorough and no adverse slope water storage exists in condensing drainage pipes The ODU can implement drainage completely from the drainage pipe without drops from the unit foundation 15 Other No exceptional sound occurs on compressors and indoor outdoor fans No fault occurs on the unit operation ...

Page 145: ...s inconsistent dH PCB of wired controller is abnormal LA For single control over multiple units IDU series is inconsistent dC Setting capacity of DIP switch code is abnormal LH Alarm due to bad air quality dL Malfunction of air outlet temperature sensor LC IDU is not matching with outdoor unit dE Malfunction of indoor CO2 sensor LL Malfunction of water flow switch dF Malfunction of upper water tem...

Page 146: ...sensor 2 J4 Over current protection of compressor 4 b4 Malfunction of liquid temperature sensor of sub cooler J5 Over current protection of compressor 5 b5 Malfunction of gas temperature sensor of sub cooler J6 Over current protection for compressor 6 b6 Malfunction of inlet tube temperature sensor of vapor liquid separator J7 Gas mixing protection of 4 way valve b7 Malfunction of exit tube temper...

Page 147: ...r H8 Drive IPM high temperature protection of fan PE Phase lacking of inverter compressor H9 Desynchronizing protection of inverter fan PF Malfunction of charging loop of driven of compressor HA Malfunction of drive storage chip of inverter outdoor fan PJ Failure startup of inverter compressor HH High voltage protection of fan s drive DC bus bar PP AC current protection of inverter compressor HC M...

Page 148: ...U is succeeded CE Communication malfunction between mode exchanger and IDU UL Emergency operation DIP switch code of compressor is wrong CF Malfunction of multiple main control units UE Charging of refrigerant is invalid CJ Address DIP switch code of system is shocking UF Identification malfunction of IDU of mode exchanger CP Malfunction of multiple wired controller C0 Communication malfunction be...

Page 149: ... Cooling n9 Check quantity of IDU on line AL Charge refrigerant automatically nA Heat pump unit AE Charge refrigerant manually nH Heating only unit AF Fan nC Cooling only unit AJ Cleaning reminding of filter nE Negative code AP Debugging confirmation when starting up the unit nF Fan model AU Long distance emergency stop nJ High temperature prevention when heating Ab Emergency stop of operation nU ...

Page 150: ...UBLESHOOTING 2 1 How to Locate a Faulty IDU Promptly Use the IDU project number enquiry and faulty IDU locating function to locate a faulty IDU or wired controller s corresponding IDU as follows when multiple IDUs are running in one place C01 Indoor project number and fault enquiry ...

Page 151: ... code setting 1 The capacity code is wrong 2 The dial component is faulty 1 Modify the capacity code setting 2 Replace the main board U3 Power phase sequence protection 1 The three phase power cable is not connected correctly 2 The main board s detection circuit is faulty 1 Check connection of the power cable 2 Replace the control board UL Wrong emergency operation dial code 1 The dial setting is ...

Page 152: ...of indoor unit 1 Some indoor units in the system are not power connected 2 Communication wires of some indoor units in the system are disconnected or have loose contact 3 Controllers of some indoor units in the system are abnormal 1 Check the number of online indoor units through outdoor unit and compare it with the number of indoor units that are actually installed Confirm the number of missing i...

Page 153: ...he master IDU is powered on If yes replace the main board Check the contact of the communication cable of the master IDU If no communication failure C0 is reported replace the main board Replace the IDU s main board and reset the master IDU Set the master IDU Note Solution of C5 fault when multiple cooling systems are controlled in a centralized way When multiple cooling systems are controlled in ...

Page 154: ...in Figure 2 Figure 2 If project commissioning is finished and the IDU where the conflict occurs needs to be set separately Click Project Number Conflict as shown in Figure 3 The pop up box comprises two parts conflicting IDU box showing the IDU s project number system number and time setting box showing the IDU project number setting and setting button Figure 3 Choose one IDU in the conflicting ID...

Page 155: ...VRF Units 151 Figure 4 If the conflict is solved the system will return to the normal status and IDUs can be operated as shown in Figure 5 Figure 5 If project commissioning is not finished and all the IDUs project numbers need to be reset click Set ...

Page 156: ...ict occurs you can use the communicator or remote controller to revise project numbers and solve the conflict See the manual of the communicator or remote controller for the method Setting of auto project number deviation on ODU s main board recommended You can set auto IDU project number deviation via the ODU s main board as follows 1 After the whole system is commissioned short press SW3 on the ...

Page 157: ...the first commissioning after installation Fault code Fault Possible reasons Solution C2 Communication failure between main control board and inverter compressor drive 1 The control board is powered off 2 The compressor drive board is powered off 3 The communication cable between the control board and compressor drive board is not connected 4 The compressor drive board s dial switch SA201 is wrong...

Page 158: ... properly 3 The compressor is damaged 1 Replace the compressor drive board 2 Reconnect the compressor s UVW cable 3 Replace the compressor C3 Communication failure between main control board and variable frequency fan drive 1 The control board is powered off 2 The fan drive board is powered off 3 The communication cable between the control board and fan drive board is not connected 4 The fan drive...

Page 159: ...escription Confirmation method Description Confirmation method Description Confirmation method E4 Highexhaust temperature protection 1 Thestop valveofthe ODUisnotfully openedas required Manual check Fullyopen thestop valve 2 TheIDU s electronic expansionvalve isnot working properly When the IDUis workinginthe coolingmodeand theelectronic expansionvalveis openedto 2000PLS the exhaust temperatureoft...

Page 160: ...ff the pipetoseeif itisblocked Replaceandsolder thepipe 3 3 2The pipelineis blockedby impurities Replaceandsolder thepipe 4 Lacking refrigerant Thesystem s exhaust temperaturerises andthelow pressureistoolow comparedwiththe reference value 4 1 Notenough refrigerant Injectrefrigerantas required 4 2 Refrigerant pipeleakage Use therefrigerant leakdetectorto detecttheleakalong thepipe Stoptheleak Pump...

Page 161: ...lace the body of the electronic expansion valve 1 3 2 The body of the valve is faulty Replace the body of the electronic expansion valve 2 The IDU s electronic expansion valve is not working properly When the system is working in the cooling mode and the ODU s electronic expansion valve is opened to 200PLS the exhaust temperature of the IDU s coil is more than 1 C lower than the intake pipe s temp...

Page 162: ...ference is large or part of the pipe is frosting Replace and solder the pipe 2 4 The pipe that connects the IDU is blocked Touch the pipe along the flowing direction of refrigerant to feel the temperature difference The difference is large or part of the pipe is frosting 2 4 1 The block is caused by solder Cut off the pipe and check it Replace and solder the pipe 2 4 2 The pipeline is blocked by i...

Page 163: ...wire 5 2Thehigh pressureswitch isdamaged Replacethe pressureswitch 6 Thefanisnot working properly A The ODU sfan doesnot workin thecooling mode B The IDU s motordoesnot workin the heating mode 6 1The IDU s fanisfaulty Manualcheck 6 1 1Thepower cable connectingthe motorand main boardisloose Manual check Reconnectthe motorwith the powercable 6 1 2Theelectric capacityisnot connectedoris damaged Manua...

Page 164: ...equired Manualcheck Fullyopen the stopvalve 2 Thesystem pipelineis blocked Thesystem s exhaust pressurerises andthelow pressureistoo low compared withthe reference value 2 1 The systemair pipelineis blocked Touchthepipealongthe flowingdirectionof refrigeranttofeelthe temperaturedifference The differenceislarge 2 1 1Theblockis causedbysolder Cutoff thepipe andcheckit Replaceand solderthepipe 2 1 2T...

Page 165: ...Reconnectthe high and low pressure sensors 6 Thefanis not working properly A The IDU sfan doesnot workin thecooling mode B The ODU sfandoes not workinthe heating mode 6 1The IDU s fanisfaulty Manualcheck 6 1 1Thepower cable connectingthe motorand main boardisloose Manualcheck Reconnectthe motorwith the powercable 6 1 2Theelectric capacityisnot connectedoris damaged Manualcheck Connector replacethe...

Page 166: ... 2 2The fluidpipeis blocked Touchthepipe alongtheflowing directionof refrigeranttofeel thetemperature difference The differenceislarge orpartofthepipeis frosting Replaceand solderthe pipe 2 4Thepipethat connectstheIDUis blocked Touchthepipe alongtheflowing directionof refrigeranttofeel thetemperature difference The differenceislarge orpartofthepipeis frosting 2 4 1Theblock iscausedby solder Cutoff...

Page 167: ...Theairintake andreturninletofthe IDUaretoocloseto eachother causing poorheatexchange oftheunit Check the distance Re designthe airflow distribution 7 Notenough refrigerant Otherreasons Incorrectquantityof refrigerantisinjected Check the necessary amountof refrigerantand inject refrigerant slowlyviathe stopvalveof the low pressure airpipe 2 3 4 Exception Analyzing and Troubleshooting 2 3 4 1 A0 Uni...

Page 168: ...ystem has entered into oil return status if returning oil under heating mode the operating IDU will stop for 5 10 minutes Possible reason Troubleshooting status code no troubleshooting 2 3 4 5 A6 Cooling and heating function setting status Error display ODU mainboard will display Error judgment condition and method This code is status code which means the system has entered into cooling and heatin...

Page 169: ...hooting 2 3 4 9 AC Cooling status Error display ODU mainboard will display Error judgment condition and method This code is status code which means the system has entered into cooling mode for operation Possible reason Troubleshooting status code no troubleshooting 2 3 4 10 AF Supply air status Error display ODU mainboard will display Error judgment condition and method This code is status code wh...

Page 170: ...t or unit status can be started Possible reason Troubleshooting status code no troubleshooting 2 3 4 14 AU Long distance control emergency stop status Error display ODU mainboard IDU wired controller and IDU receive light board will display Error judgment condition and method This code is status code which means the unit has been long distance controlled as emergency stop status unless the status ...

Page 171: ...ation Possible reason Troubleshooting status code no troubleshooting 2 3 4 17 b1 Outdoor ambient temperature sensor error Error display ODU mainboard IDU wired controller and IDU receive light board will display Error judgment condition and method Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value if the sampled AD value exceeds u...

Page 172: ... seconds continuously report the error Possible reason Poor contact between temperature sensor and terminal in mainboard interface Temperature sensor is abnormal Detecting circuit is abnormal Troubleshooting 2 3 4 19 b3 Defrost temperature sensor 2 error Error display ODU mainboard IDU wired controller and IDU receive light board will display Error judgment condition and method Sample the AD value...

Page 173: ...play ODU mainboard IDU wired controller and IDU receive light board will display Error judgment condition and method Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lower limit in 30 seconds continuously report the error Possible reason Poor contact between temperature sensor and ...

Page 174: ...ll display Error judgment condition and method Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lower limit in 30 seconds continuously report the error Possible reason Poor contact between temperature sensor and terminal in mainboard interface Temperature sensor is abnormal Detecti...

Page 175: ... board will display Error judgment condition and method Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lower limit in 30 seconds continuously report the error Possible reason Poor contact between temperature sensor and terminal in mainboard interface Temperature sensor is abnorma...

Page 176: ... board will display Error judgment condition and method Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lower limit in 30 seconds continuously report the error Possible reason Poor contact between temperature sensor and terminal in mainboard interface Temperature sensor is abnorma...

Page 177: ...lay Error judgment condition and method Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lower limit in 30 seconds continuously report the error Possible reason Poor contact between temperature sensor and terminal in mainboard interface Temperature sensor is abnormal Detecting circ...

Page 178: ...will display Error judgment condition and method Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lower limit in 30 seconds continuously report the error Possible reason Poor contact between temperature sensor and terminal in mainboard interface Temperature sensor is abnormal Detec...

Page 179: ...isplay Error judgment condition and method Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lower limit in 30 seconds continuously report the error Possible reason Poor contact between temperature sensor and terminal in mainboard interface Temperature sensor is abnormal Detecting c...

Page 180: ... improperly or loose Communication wire is cut off Communication wire is in poor connection Connected wired controller quantity or address setting is improper Controller is abnormal Troubleshooting If C0 isn t displayed on the ODU main control board please check the network between IDU and wired controller if ODU main control board IDU light board and wired controller all report C0 please check th...

Page 181: ...troller and IDU receive light board will display Error judgment condition and method If ODU hasn t received inverter compressor drive board data in continuous 30s report the error Possible reason Communication wire between ODU mainboard inside module and inverter compressor drive board is not connected properly Inverter compressor drive board is abnormal Mainboard is abnormal ...

Page 182: ...d IDU wired controller and IDU receive light board will display Error judgment condition and method If ODU hasn t received inverter fan drive board data in continuous 30s report the error Possible reason Communication wire between ODU mainboard inside module and inverter fan drive board is not connected properly Inverter fan drive board is abnormal Mainboard is abnormal ...

Page 183: ...play ODU mainboard IDU wired controller and IDU receive light board will display Error judgment condition and method If ODU hasn t received inverter fan drive board data in continuous 30s report the error Possible reason Communication wire is in poor connection Power supply of IDU is cut off IDU mainboard is abnormal ...

Page 184: ...e mainboard that is ever used in other system Troubleshooting You can reset the conflict IDU project codes through the following ways Reset project codes through debugging software Reset project codes through wired controller Reset project codes through debugging remote controller Reset this mainboard through the reset button on IDU mainboard and let the system reallocate the code 2 3 4 32 C6 Outd...

Page 185: ...gency operation status of fan Error display ODU mainboard will display Error judgment condition and method If any fan in the module is set with emergency operation status the mainboard will display C8 to indicate that the system has entered compressor emergency operation status during operation Possible reason Troubleshooting status code no troubleshooting 2 3 4 35 CA Emergency operation status of...

Page 186: ...ition and method The system detects rated capacity of online IDUs and ODUs When the ratio between total rated capacity of IDUs and total rated capacity of ODUs is less than 0 5 the unit will limit unit on and report this error Possible reason Total rated capacity of IDUs is less than 0 5 time of total rated capacity of ODUs Troubleshooting Rearrange project design to increase IDU capacity or decre...

Page 187: ...display Error judgment condition and method Mainboard detects the DIP switch SA8 of master controlling unit to judge if it is master controlling unit When multiple master controlling units are detected in the communication network of multiple modules system it will report this error Possible reason DIP switch of master controlling unit is abnormal there are multiple master controlling units in the...

Page 188: ...e reason When the system address DIP switch SA2 of master controlling unit in two or more systems are set as the master system DIP switch the SA2 DIP switch of master controlling unit in only one system shall keep as 00000 The SA2 DIP switch of master controlling unit in other systems shall be set in different codes DIP switch is abnormal or mainboard is abnormal Troubleshooting 2 3 4 41 CP Multip...

Page 189: ...uantity of address that ODU allocates to other ODU modules exceeds 4 the system will report IP address allocation overflow If the quantity of address that ODU allocates to IDUs exceeds 80 the system will report IP address allocation overflow Possible reason ODU quantity in the system exceeds 4 IDU quantity in the system exceeds 80 After replacing the IDU and ODU mainboard ODU is not de energized T...

Page 190: ...mit and lower limit in 5 seconds continuously report the error Possible reason Poor contact between ambient temperature sensor and terminal in mainboard interface Ambient temperature sensor is abnormal Detecting circuit is abnormal Troubleshooting 2 3 4 45 d4 Inlet pipe temperature sensor error Error display IDU wired controller and IDU receive light board will display Error judgment condition and...

Page 191: ... board will display Error judgment condition and method Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value If the sampling AD value exceeds upper limit and lower limit in 5 seconds continuously report the error Possible reason Poor contact between outlet pipe temperature sensor and terminal in mainboard interface Outlet pipe tempe...

Page 192: ...e exceeds upper limit and lower limit in 5 seconds continuously report the error Possible reason Poor contact between humidity sensor and terminal in mainboard interface Humidity sensor is abnormal Detecting circuit is abnormal Troubleshooting 2 3 4 48 d9 Jumper cap error Error display IDU wired controller and IDU receive light board will display Error judgment condition and method Possible reason...

Page 193: ... IDU address chip and IP address if address chip cannot be read IDU IP is 0 or IP is in conflict report the error Possible reason ODU allocated address is wrong IDU treatment is wrong Address chip is abnormal Troubleshooting 2 3 4 50 dH wired controller circuit board error Error display IDU wired controller and IDU receive light board will display Error judgment condition and method Wired controll...

Page 194: ...dition and method If capacity DIP switch is set to the wrong position report the error Possible reason Capacity DIP switch is set to the wrong position Detecting circuit is abnormal Troubleshooting 2 3 4 52 dL Air outlet temperature sensor error Error display IDU wired controller and IDU receive light board will display Error judgment condition and method Sample the AD value of temperature sensor ...

Page 195: ...t be operated Troubleshooting Possible reason 2 3 4 54 E1 High pressure protection Error display ODU mainboard IDU wired controller and IDU receive light board will display Error judgment condition and method Judge through high pressure sensor detecting system real time high pressure or action of high pressure switch If the sensor detects that high pressure is bigger than 65 or high pressure switc...

Page 196: ...GREE Photovoltaic Direct driven Inverter Multi VRF Units 192 Refrigerant charging amount is too much System pipeline is blocked Troubleshooting ...

Page 197: ...d method Test the compressor discharge temperature and high pressure value If the difference between discharge temperature and high pressure value is lower than 10 the unit will stop for protection Possible reason Exhaust temperature sensor failure In cooling mode The IDU s electronic expansion valve is not working properly In heating mode The ODU s electronic expansion valve is not working proper...

Page 198: ...r display ODU mainboard IDU wired controller and IDU receive light board will display Error judgment condition and method Test compressor suction pressure through low pressure sensor When pressure value is lower than 41 the unit will stop for protection Possible reason Cut off valve of ODU is not fully opened ...

Page 199: ...lti VRF Units 195 Low pressure sensor is abnormal Outdoor or indoor fan is not working properly IDU filter or air duct is blocked cooling mode Ambient temperature is too low Refrigerant charging amount is insufficient System pipeline is blocked ...

Page 200: ... range Check if electronic expansion valves of indoor and outdoor units work properly Check if the return air filter of the indoor unit is dirty or blocked The pipeline is blocked Clean the filter Replace electronic expansion valves or main board Set the indoor unit s rating capacity in the permitted range Check output signals of the swing motor and main board Replace the swing motor or main board...

Page 201: ... temperature through compressor discharge pipe and shell top temperature sensor If the tested temperature value is higher than 118 the unit will stop for protection Possible reason Cut off valve of ODU is not fully opened Electronic expansion valve is abnormal Outdoor or indoor fan is not working properly IDU filter or air duct is blocked cooling mode Ambient temperature exceeds allowable operatio...

Page 202: ...GREE Photovoltaic Direct driven Inverter Multi VRF Units 198 Troubleshooting ...

Page 203: ...s abnormal Memory chip is abnormal Clock chip is abnormal Troubleshooting 2 3 4 59 F1 High pressure sensor error Error display ODU mainboard IDU wired controller and IDU receive light board will display Error judgment condition and method Sample the AD value of high pressure sensor through sensor detecting circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lowe...

Page 204: ...udgment condition and method Sample the AD value of low pressure sensor through sensor detecting circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lower limit in 30 seconds continuously report the error Possible reason Poor contact between low pressure sensor and terminal in mainboard interface Poor contact between low pressure sensor and pressure detection po...

Page 205: ... judgment condition and method Sample the AD value of temperature sensors through temperature sensors circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lower limit in 30 seconds continuously report the error Possible reason Poor contact between discharge temperature sensor and terminal in mainboard interface Discharge temperature sensor is abnormal Detecting c...

Page 206: ...ay Error judgment condition and method Sample the AD value of temperature sensors through temperature sensors circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lower limit in 30 seconds continuously report the error Possible reason Poor contact between discharge temperature sensor and terminal in mainboard interface Discharge temperature sensor is abnormal Det...

Page 207: ...ay Error judgment condition and method Sample the AD value of temperature sensors through temperature sensors circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lower limit in 30 seconds continuously report the error Possible reason Poor contact between discharge temperature sensor and terminal in mainboard interface Discharge temperature sensor is abnormal Det...

Page 208: ...ay Error judgment condition and method Sample the AD value of temperature sensors through temperature sensors circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lower limit in 30 seconds continuously report the error Possible reason Poor contact between discharge temperature sensor and terminal in mainboard interface Discharge temperature sensor is abnormal Det...

Page 209: ...ay Error judgment condition and method Sample the AD value of temperature sensors through temperature sensors circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lower limit in 30 seconds continuously report the error Possible reason Poor contact between discharge temperature sensor and terminal in mainboard interface Discharge temperature sensor is abnormal Det...

Page 210: ...ay Error judgment condition and method Sample the AD value of temperature sensors through temperature sensors circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lower limit in 30 seconds continuously report the error Possible reason Poor contact between discharge temperature sensor and terminal in mainboard interface Discharge temperature sensor is abnormal Det...

Page 211: ...l display Error judgment condition and method Sample the AD value of current sensor through detecting circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously report the error Possible reason Poor contact between circuit sensor and terminal in mainboard interface Small board of circuit sensor is abnormal Detecting circuit is abno...

Page 212: ...l display Error judgment condition and method Sample the AD value of current sensor through detecting circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously report the error Possible reason Poor contact between circuit sensor and terminal in mainboard interface Small board of circuit sensor is abnormal Detecting circuit is abno...

Page 213: ...l display Error judgment condition and method Sample the AD value of current sensor through detecting circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously report the error Possible reason Poor contact between circuit sensor and terminal in mainboard interface Small board of circuit sensor is abnormal Detecting circuit is abno...

Page 214: ...l display Error judgment condition and method Sample the AD value of current sensor through detecting circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously report the error Possible reason Poor contact between circuit sensor and terminal in mainboard interface Small board of circuit sensor is abnormal Detecting circuit is abno...

Page 215: ...l display Error judgment condition and method Sample the AD value of current sensor through detecting circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously report the error Possible reason Poor contact between circuit sensor and terminal in mainboard interface Small board of circuit sensor is abnormal Detecting circuit is abno...

Page 216: ...l display Error judgment condition and method Sample the AD value of current sensor through detecting circuit and judge the range of AD value if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously report the error Possible reason Poor contact between circuit sensor and terminal in mainboard interface Small board of circuit sensor is abnormal Detecting circuit is abno...

Page 217: ...ror judgment condition and method Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value If the sampling AD value exceeds upper limit and lower limit in 30 seconds continuously report the error Possible reason Poor contact between shell top temperature sensor and terminal in mainboard interface Shell top temperature sensor is abnormal...

Page 218: ...ror judgment condition and method Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value If the sampling AD value exceeds upper limit and lower limit in 30 seconds continuously report the error Possible reason Poor contact between shell top temperature sensor and terminal in mainboard interface Shell top temperature sensor is abnormal...

Page 219: ...temperature sensor error Nixie tube on ODU main control board displays H7 Fan drive IPM high temperature protection Nixie tube on ODU main control board displays H8 Fan drive current detecting circuit error Nixie tube on ODU main control board displays HC Fan drive charging circuit error Nixie tube on ODU main control board displays HF Inverter fan non synchronism protection Nixie tube on ODU main...

Page 220: ...responding error 2 3 4 77 H2 Fan drive board power supply voltage protection Error display IDU wired controller will display Error judgment condition and method Check the error code on IDU wired controller If IDU wired controller displays H2 you should also check the error code on nixie tube of ODU main control board Judge the detailed error of fan drive board according to the error code on main c...

Page 221: ...ror display ODU mainboard will display Error judgment condition and method Check the error code on nixie tube of ODU main control board If H5 is displayed it indicates inverter fan overcurrent protection Possible reason Poor contact of fan UVW wire Fan is broken Fan blade is blocked Fan blade is blocked and motor shaft is rusty Fan drive board is abnormal ...

Page 222: ...U mainboard will display Error judgment condition and method Check the error code on nixie tube of ODU main control board If H6 is displayed it indicates Drive IPM module protection of fan Possible reason Poor contact of fan UVW wire Fan is broken Fan blade is blocked Fan blade is blocked and motor shaft is rusty Fan drive board is abnormal ...

Page 223: ... H7 Fan drive temperature sensor error Error display ODU mainboard will display Error judgment condition and method Check the error code on nixie tube of ODU main control board If H7 is displayed it indicates fan drive temperature sensor error Possible reason Fan drive board is abnormal ...

Page 224: ...or judgment condition and method Check the error code on nixie tube of ODU main control board If H8 is displayed it indicates fan drive IPM high temperature protection Possible reason Thermal grease of IPM module hasn t been spread or thermal grease is not spread evenly or thermal grease is dry Screw of IPM module is not tightened Fan drive board is abnormal Troubleshooting ...

Page 225: ... display Error judgment condition and method Check the error code on nixie tube of ODU main control board If H9 is displayed it indicates Desynchronizing protection of inverter compressor Possible reason Poor contact of fan UVW wire Fan is broken Fan blade is blocked Fan blade is blocked and motor shaft is rusty Fan drive board is abnormal Troubleshooting ...

Page 226: ...indicates AC input voltage of drive of inverter fan Possible reason Fan drive board is abnormal Troubleshooting 2 3 4 85 HH fan drive DC bus high voltage protection Error display ODU mainboard will display Error judgment condition and method Check the error code on nixie tube of ODU main control board If HH is displayed it indicates fan drive DC bus high voltage protection Possible reason Power su...

Page 227: ...e protection Possible reason Power supply voltage is lower than 320V Fan drive board is abnormal Troubleshooting 2 3 4 87 HJ Failure startup of inverter fan Error display ODU mainboard will display Error judgment condition and method Check the error code on nixie tube of ODU main control board If HJ is displayed it indicates Failure startup of inverter fan Possible reason Poor contact of fan UVW w...

Page 228: ...nd IDU receive light board will not display Error judgment condition and method In multiple modules system if any module causes system stoppage the modules without errors will display this error to indicate other module has error which causes unit stoppage Possible reason Other module has error for stoppage Troubleshooting Eliminate the error of other modules ...

Page 229: ...ired controller and IDU receive light board will display Error judgment condition and method Check the operation current of compressor through current sensor or circuit When current exceeds the limit the unit will stop for protection Possible reason System parameters are abnormal Drive module is abnormal Compressor is abnormal Troubleshooting ...

Page 230: ...ired controller and IDU receive light board will display Error judgment condition and method Check the operation current of compressor through current sensor or circuit When current exceeds the limit the unit will stop for protection Possible reason System parameters are abnormal Drive module is abnormal Compressor is abnormal Troubleshooting ...

Page 231: ...ired controller and IDU receive light board will display Error judgment condition and method Check the operation current of compressor through current sensor or circuit When current exceeds the limit the unit will stop for protection Possible reason System parameters are abnormal Drive module is abnormal Compressor is abnormal Troubleshooting ...

Page 232: ...ired controller and IDU receive light board will display Error judgment condition and method Check the operation current of compressor through current sensor or circuit When current exceeds the limit the unit will stop for protection Possible reason System parameters are abnormal Drive module is abnormal Compressor is abnormal Troubleshooting ...

Page 233: ...ired controller and IDU receive light board will display Error judgment condition and method Check the operation current of compressor through current sensor or circuit When current exceeds the limit the unit will stop for protection Possible reason System parameters are abnormal Drive module is abnormal Compressor is abnormal Troubleshooting ...

Page 234: ...ired controller and IDU receive light board will display Error judgment condition and method Check the operation current of compressor through current sensor or circuit When current exceeds the limit the unit will stop for protection Possible reason System parameters are abnormal Drive module is abnormal Compressor is abnormal Troubleshooting ...

Page 235: ... display Error judgment condition and method Check the system high pressure and low pressure through pressure sensor When the difference between system high pressure and low pressure is lower than 0 1MPa after starting operation the unit will stop for protection Possible reason Coil or connection wire is abnormal Mainboard is abnormal Internal part of 4 way valve is abnormal Troubleshooting ...

Page 236: ... the unit will stop for protection Possible reason Pressure sensor is abnormal Ambient temperature exceeds the requirement Troubleshooting 2 3 4 97 J9 System low pressure ratio protection Error display ODU mainboard IDU wired controller and IDU receive light board will display Error judgment condition and method Check the system high pressure and low pressure through pressure sensor When the ratio...

Page 237: ...ntroller and IDU receive light board will display Error judgment condition and method Check if the rotation speed of IDU is too slow or it stops rotation or protection signal of outdoor fan is transferred If yes it is judged that indoor fan protection occurs Possible reason Motor stops operation or it is blocked IDU mainboard is abnormal ...

Page 238: ...Troubleshooting 2 3 4 99 L3 Water full protection Error display IDU wired controller and IDU receive light board will display Error judgment condition and method Check the status of IDU float switch When water level is too high float switch is activated so water ...

Page 239: ...taic Direct driven Inverter Multi VRF Units 235 full protection happens Possible reason IDU is installed improperly Drainage pump is broken Float switch operates abnormally IDU mainboard is abnormal Troubleshooting ...

Page 240: ...n Power supply conducting wire of wired controller is short circuited IDU mainboard is abnormal Mainboard of wired controller is abnormal Troubleshooting 2 3 4 101 L5 Freeze protection Error display IDU wired controller and IDU receive light board will display Error judgment condition and method Check IDU pipe temperature When pipe temperature is too low freeze protection will be activated to prev...

Page 241: ...U Error display IDU wired controller and IDU receive light board will display Error judgment condition and method No master IDU error will happen when there is no master IDU in the system Possible reason Master IDU is offline The mainboard of master IDU is replaced The mainboard of master IDU has error ...

Page 242: ...set group controlled IDU quantity Possible reason IDU quantity connected with one wired controller exceeds 16 sets Actually connected IDU quantity is inconsistent with the set group controlled IDU quantity Troubleshooting 2 3 4 104 LA Group controlled IDU series inconsistency Error display IDU wired controller and IDU receive light board will display Error judgment condition and method Wired contr...

Page 243: ...etting status Error display ODU mainboard IDU wired controller and IDU receive light board will display Error judgment condition and method This code is function setting status code which indicates that the system has entered energy saving setting status 00 is the control with priority of comfort 01 is the control with priority of energy savings in which energy savings can reach 15 Possible reason...

Page 244: ... be inquired Pay attention that IDU error and ODU error shall be inquired separately Possible reason Troubleshooting status code no troubleshooting 2 3 4 110 n7 Unit parameter inquiry status Error display ODU mainboard IDU wired controller and IDU receive light board will display Error judgment condition and method This code is the inquiry status code which indicates that the system has entered th...

Page 245: ...14 nH Heating only model status Error display ODU mainboard will display Error judgment condition and method This code is the heating only model status code which indicates that the system has been set to heating only unit status The IDUs can only operate in heating mode Possible reason Troubleshooting status code no troubleshooting 2 3 4 115 nC Cooling only model status Error display ODU mainboar...

Page 246: ... error code on main control board Then arrange troubleshooting accordingly Possible reason Compressor drive module reset protection P3 is displayed on the nixie tube of ODU main control board Compressor drive temperature sensor error P7 is displayed on the nixie tube of ODU main control board Compressor drive IPM high temperature protection P8 is displayed on the nixie tube of ODU main control boa...

Page 247: ...power of compressor Error display IDU wired controller will display Error judgment condition and method Check error code through IDU wired controller If IDU wired controller displays P2 please also check the error code displayed on the nixie tube of ODU main control board Detailed error of compressor drive board can be judged according to the error code on main control board Then arrange troublesh...

Page 248: ... display Error judgment condition and method Check the error code on nixie tube of ODU main control board If P5 is displayed it indicates inverter compressor overcurrent protection Possible reason Poor contact of compressor UVW wire Connection sequence of compressor UVW wire is wrong Compressor is broken System is blocked Compressor drive board IPM module is broken ...

Page 249: ... 2 3 4 123 P6 Inverter compressor IPM protection Error display ODU mainboard will display Error judgment condition and method Check the error code on nixie tube of ODU main control board If P6 is displayed it indicates inverter compressor overcurrent protection Possible reason ...

Page 250: ...t driven Inverter Multi VRF Units 246 Poor contact of compressor UVW wire Connection sequence of compressor UVW wire is wrong Compressor is broken System is blocked Compressor drive board IPM module is broken Troubleshooting ...

Page 251: ...n Compressor drive board is abnormal Troubleshooting 2 3 4 125 P8 Compressor drive IPM high temperature protection Error display ODU mainboard will display Error judgment condition and method Check the error code on nixie tube of ODU main control board If P8 is displayed it indicates compressor drive board IPM high temperature protection occurs Possible reason Screw of IPM module is not tightened ...

Page 252: ... inverter compressor Error display ODU mainboard will display Error judgment condition and method Check the error code on nixie tube of ODU main control board If P9 is displayed it indicates Desynchronizing protection of inverter compressor Possible reason Compressor is broken Fan drive board is abnormal ...

Page 253: ...GREE Photovoltaic Direct driven Inverter Multi VRF Units 249 Troubleshooting ...

Page 254: ...it indicates compressor drive current detecting circuit error Possible reason Compressor drive board is abnormal Troubleshooting 2 3 4 128 PH Compressor drive DC bus high voltage protection Error display ODU mainboard will display Error judgment condition and method If the mainboard detects that input power cord voltage exceeds 460V it will report high voltage protection Possible reason Power supp...

Page 255: ...than 320V it will report low voltage protection Possible reason Power supply voltage is lower than 320V Compressor drive board is abnormal Troubleshooting 2 3 4 130 PJ Inverter compressor startup failure Error display ODU mainboard will display Check the error code on nixie tube of ODU main control board If PJ is displayed it indicates inverter compressor startup failure Poor contact of compressor...

Page 256: ...GREE Photovoltaic Direct driven Inverter Multi VRF Units 252 Troubleshooting ...

Page 257: ...U mainboard IDU wired controller and IDU receive light board will display Error judgment condition and method ODU mainboard detects that the capacity code doesn t comply with the actual unit capacity or ODU mainboard detects that the jumper cap value doesn t comply with the actual unit Possible reason Capacity DIP switch is wrong or jumper cap is wrong for those models without jumper cap it won t ...

Page 258: ... wired controller and IDU receive light board will display Error judgment condition and method Check the system high pressure and low pressure through pressure sensor When the system high pressure and low pressure is lower than 5 of outdoor ambient temperature before starting operation the unit will stop for protection Possible reason Refrigerant charging amount is insufficient System pipeline is ...

Page 259: ...valve 2 3 4 136 U8 IDU pipeline error Error display ODU mainboard IDU wired controller and IDU receive light board will display Error judgment condition and method During commissioning check if IDU pipeline is blocked through detecting IDU pipeline If the parameter is abnormal it will indicate t Possible reason Electronic expansion valve doesn t operate normally IDU pipeline is blocked Troubleshoo...

Page 260: ...ror judgment condition and method This code is status code not an error During commissioning it indicates that setting of master IDU is done Possible reason Troubleshooting 2 3 4 139 UL Compressor emergency operation DIP switch error Error display ODU mainboard IDU wired controller and IDU receive light board will display Error judgment condition and method If setting of compressor emergency opera...

Page 261: ...rging of refrigerant 2 3 4 141 Poor cooling and heating performances Error judgment condition and method 1 When electronic expansion valve is opened to 2000PLS in cooling operation of IDU and IDU coil outlet pipe temperature is 5 higher than inlet pipe temperature 2 When electronic expansion valve is opened to 2PLS in heating operation of IDU and IDU coil outlet pipe temperature is 12 lower than s...

Page 262: ...GREE Photovoltaic Direct driven Inverter Multi VRF Units 258 Troubleshooting ...

Page 263: ... DIP setting position Master module state Slave module state AP1 LED When a master module is powered on LED1 is displayed as 01 For a slave module LED1 is displayed as 02 03 or 04 as shown in the figure below LED1 display state Master module state LED1 display state Slave module state LED1 display state Slave module state LED1 display state Slave module state Or Or 3 1 2 Cautions on Replacement of...

Page 264: ...tem parameters For details please refer to the section Outdoor Unit Function Setting 3 1 3 Cautions on Replacement of Slave ODU AP1 Before replacing slave module AP1 set DIP identical to that of the faulty AP1 check wiring and then power on the AP1 3 2 Method and Notice for Replacement of Compressor 3 2 1 Compressor Malfunction Diagnosis 3 2 1 1Unit can start normally Step 1 If units can start run...

Page 265: ...e while compressor works at 90Hz C o m p r e s s o r C u r r e n t A Evaporating Temp C C o n d e n s i n g T e m p C Note You can infer from the preceding figures the current of compressors operating at other frequency bands Step 2 Check whether the compressor sounds sharp or rubs Compare the sound of the faulty compressor with that of a normal compressor Step 3 Check whether the electric expansi...

Page 266: ... the valve and you will feel its vibration during the reset action A crack sound will be heard as well Description of electric expansion valve 2 Four way valve While the valve is normally running the four copper pipes connected to it will suffer different temperature When a unit switches to act the valve you will feel obvious vibration and hear sounds ...

Page 267: ...in heating the pipe at side side E works at high pressure and high temperature and the pipes at side C and S work at low pressure and low temperature The pipe at side D connects to exhaust and it is always working at high pressure and high temperature When units start running defrosting or returning oil the valve will vibrate obviously DO NOT touch the pipe or you may be scalded 3 Oil balance sole...

Page 268: ... the electric junction box of compressor to see whether wiring of the compressor is intact Step 2 Measure the resistance between two wiring terminals U V W The value of resistance should range within 0 5 2Ω Measure the resistance to earth of each wiring terminal The value should be above 10MΩ If not the compressor has an internal fault ...

Page 269: ...pare before replacement 1 Prepare the parts that are necessary for replacement When carrying the used compressor or new compressor please note that it mustn t be laid horizontally or upside down The inclination angle should be kept within 30 Also please make sure oil will not flow from the oil balance opening The gas inlet and outlet must be sealed If the sealing rubbers are missing cover the gas ...

Page 270: ...en charging during the welding process Prepare enough nitrogen Nitrogen pressure should be above 2 0MPa 2 Prepare welding rods In addition to preparing ordinary welding rods you should also prepare special welding rods that contain 5 or more silver for welding compressors The gas inlet and outlet of compressor are made of copper plated steels which require special welding rods and solder 3 Prepare...

Page 271: ...e releasing the refrigerant get some freezing oil through the oil check valve Method Connect one end of a rubber hose to the oil check valve and the other end of it to a transparent container Then open the oil check valve Control the oil flow speed Since the oil is a mixture of volatile refrigerant and lubricant DO NOT cover the container otherwise the container may explode because of high pressur...

Page 272: ...REE Photovoltaic Direct driven Inverter Multi VRF Units 268 Step 6 Remove the compressor Confirm the condition of faulty compressor including its position and model The handling procedure is stated below ...

Page 273: ... Note Confirm which compressor needs to be replaced After replacing the faulty compressor make sure to block all its openings with adhesive tape They should be kept intact for further analysis Step 7 Check system parts If system oil is contaminated check unit parts including oil separator gas liquid separator and storage tank 1 Check oil separator Remove the oil separator For the removal procedure...

Page 274: ...GREE Photovoltaic Direct driven Inverter Multi VRF Units 270 2 Check oil balancer ...

Page 275: ...t check whether it contains impurities The check method is as below Use a transparent container to hold the liquid Check liquid impurities and colors and seal the container for further factory inspection Note If the compressor needs to be replaced the gas liquid separator must be replaced as well ...

Page 276: ... volume of oil drawn out from oil separator gas separator and oil balancer respectively After the faulty compressor and relative parts are replaced you should fill oil of equivalent amount into the system The total volume of oil drawn from the system equals to the volume of oil that should be added into the system after replacement Step 8 Clear pipeline system After confirming the parts that need ...

Page 277: ...GREE Photovoltaic Direct driven Inverter Multi VRF Units 273 Components of oil balance valve 2 ...

Page 278: ...ipes Check liquid pipe filter For other pipeline parts clear them based on actual situation If you do not replace the parts immediately after clearing the pipeline make sure to seal the pipes with adhesive tape which can prevent air moisture and impurities from contaminating them ...

Page 279: ...ing 3 Power lines of the compressor should be wired following the way that they are wired before leaving the factory You can refer to wiring diagram of the unit Phase sequence error and inverse connection of compressor wires are forbidden Install an inverter compressor Caution Make sure compressor is wired exactly the same as it was wired before leaving the factory Step 10 Check Replace gas liquid...

Page 280: ...thly flow through the gas separator Step 11 Check Replace oil balancer The original oil balancer if is found to have no impurity or other objects can continue to be used This part serves as a container and it does not have complex structure However if it contains impurities or other objects replace it This is because a dirty oil balancer cannot be thoroughly cleaned ...

Page 281: ...GREE Photovoltaic Direct driven Inverter Multi VRF Units 277 Step 12 Check Replace oil separator Detach the oil separator If it is found to have contained impurities replace it ...

Page 282: ...MPa accordingly then the system is regarded qualified despite the pressure decrease Step 14 Fill lubricant The amount of lubricant that is required to add is subject to the filling amount of compressor lubricant as indicated in the specifications of outdoor unit For example For GMV Y280WM C X units one compressor is replaced 4L of lubricant should be added into the system as required in the specif...

Page 283: ...tely vaporized Vacuum pumps of the following specifications are recommended Type Maximum discharge rate Purpose For air discharge For vacuum drying Lubricant driven pump 100L min Applicable Applicable Lubricant free pump 50L min Applicable Applicable Connect a vacuum pump to big and small valves and evacuate at the same time During evacuating connect a pressure gauge When the internal pressure rea...

Page 284: ...ant of that outdoor unit only is drawn out before maintenance first add 80 of the rated charging amount of refrigerant as specified on the nameplate of that outdoor unit and then start it up and adjust through debugging parameters Step 17 Connect electric parts Install the electric box Connect wires by referring to the marks made beforehand and the wiring diagram on the back of the box Connect com...

Page 285: ... power supply for warning Step 2 Measure compressor drive DC bus voltage between P and N Set the multimeter to DC voltage gear and measure the voltage between P and N The voltage should be lower than 36V If no multimeter is available wait for 20 minutes on the condition that power is off Then you may proceed with the following steps Step 3 Disconnect all the cables from the compressor drive module...

Page 286: ...p 4 Loosen the screws on compressor drive as shown in the figure below Step 5 Replace a new compressor drive Before replacement apply some silicone tape onto the IPM module Apply some silicone tape on it evenly Step 6 Install a new compressor drive Screw and wire it ...

Page 287: ...GREE Photovoltaic Direct driven Inverter Multi VRF Units 283 ...

Page 288: ...ct the power cord of compressor and remove the electric heating belt top temperature sensor and discharge temperature sensor Remove the sound proof sponge from the compressor Use a screwdriver to unscrew the power cord Remove the power cord Remove the electric heating belt top temperature sensor and discharge temperature sensor Note Before removing the power cord mark the wiring terminals correspo...

Page 289: ...ion and discharge pipes of the compressor to the pipeline system Heat the suction and discharge pipes by acetylene welding and then install the pipes During welding charge nitrogen into the pipes The pressure should be controlled within 0 5 0 1kgf cm2 relative pressure Avoid nearby materials from being burnt during welding 8 Connect the power cord of compressor and install the electric heating bel...

Page 290: ...crews 3 3 2 Disassembly and Assembly of 4 way Valve Removal procedure of 4 way valve Note Before removing the 4 way valve make sure no refrigerant is inside the pipeline and power has been disconnected Step Diagram Operation Procedure 1 Loosen the hooks at the bottom of the electric box and the screws Remove the upper and lower front panels Loosen the hooks at the bottom of the electric box Use a ...

Page 291: ...e direction of the valve and position of each pipe joint Note Avoid nearby parts from being burnt during welding 4 Remove the 4 way valve Remove the 4 way valve from the pipeline 5 Install a new 4 way valve Put the valve in proper position Weld the valve with the pipeline Before welding cover the valve with wet cloth to avoid its internal slide from being burnt and prevent water from flowing in th...

Page 292: ...y and Assembly of Electronic Expansion Valve Removal procedure of electronic expansion valve Note Before removing the electronic expansion valve make sure no refrigerant is inside the pipeline and power has been disconnected Step Diagram Operation Procedure 1 Loosen the hooks at the bottom of the electric box and the screws Remove the upper and lower front panels Loosen the hooks at the bottom of ...

Page 293: ...ve the pipes Note Avoid nearby parts from being burnt during welding 4 Remove the electric expansion valve Remove the electric expansion valve 5 Install a new electric expansion valve Weld the connection pipes with the electric expansion valve Before welding cover the valve with wet cloth During welding charge nitrogen into the pipes The pressure should be controlled within 0 5 0 1kgf cm2 relative...

Page 294: ...e sure no refrigerant is inside the pipeline and power has been disconnected Step Diagram Operation Procedure Loosen the hooks at the bottom of the electric box and the screws Remove the upper and lower front panels Loosen the hooks at the bottom of the electric box Use a screwdriver to unscrew the electric box 2 Remove the electric box Disconnect internal and external connection wires of the elec...

Page 295: ...Weld the 4 joints on oil separator During welding charge nitrogen into the pipes The pressure should be controlled within 0 5 0 1kgf cm2 relative pressure Note Avoid nearby parts from being burnt during welding Screw the oil separator Fasten the electric heating belt 6 Fix and wire the electric box Put the electric box back to the original position and screw it Connect wires same as the original 7...

Page 296: ...nd the screws Remove the upper and lower front panels Loosen the hooks at the bottom of the electric box Use a screwdriver to unscrew the electric box 2 Remove the electric box Disconnect internal and external connection wires of the electric box Protect the internal parts during the disassembly 3 Disassemble the gas liquid separator Heat the 2 connection pipes of the gas liquid separator by acety...

Page 297: ...uction and discharge pipes and weld the pipes with the gas liquid separator During welding charge nitrogen into the pipes The pressure should be controlled within 0 5 0 1kgf cm2 relative pressure Note Avoid nearby parts from being burnt during welding Screw the gas liquid separator 6 Fix and wire the electric box Put the electric box back to the original position and screw it Connect wires same as...

Page 298: ...tom of the electric box Use a screwdriver to unscrew the electric box 2 Remove the electric box Disconnect internal and external connection wires of the electric box Protect the internal parts during the disassembly 3 Disassemble the plate type heat exchanger Heat the 4 pipe joints of the plate type heat exchanger by acetylene welding and then remove the pipes Note Avoid nearby parts from being bu...

Page 299: ...onto the chassis Put on the plate type heat exchanger based on the position of the suction and discharge pipes and weld the pipes with the heat exchanger During welding charge nitrogen into the pipes The pressure should be controlled within 0 5 0 1kgf cm2 relative pressure Note Avoid nearby parts from being burnt during welding 6 Fix and wire the electric box Put the electric box back to the origi...

Page 300: ... for photo voltaic system ___________________________ Inspection date Inspector Items Results Suggestions Remarks Photo voltaic unit Surface cleanness of the unit Appearance and smell of the unit Electric warning labels of the unit Stability of the unit Grounding og the unit Temperature of the unit Series current consistency of the unit Bearer Connection of the bearer Corrosion protection of the b...

Page 301: ...e inspection Inspector Date In the Photo voltaic Direct Driven Inverter Multi VRF System the main parts of photo voltaic system should be well maintained including the photo voltaic cell array photo voltaic anti lightning combining box AC power distribution cabinet and wires and cables between photo voltaic parts Most of the items of regular inspection on the photo voltaic system relate to the ope...

Page 302: ...fference of the surface of the same photo voltaic part right above the cell should be smaller than 20 If the installed capacity of the photo voltaic station is larger than 50kWp infrared ray thermal imager should be equipped in order to detect temperature difference of the surface of photo voltaic parts 7 Under the condition that solar irradiance is almost the same use DC forcipate ammeter to meas...

Page 303: ...oated bolts are connected well and the locking components are complete 2 Power distribution cabinet should have the numbers names and operating positions of the controlled deviced marked clearly 3 Bus bar joints should be connected tightly and in good shape There should be no discharging and blackening trace Insulation parts are not loose or damaged And the fastening bolts are not rusted 4 The han...

Page 304: ...corrosive matters and make sure the cables exposed outside are protected well 8 Make sure the cover paltes of cable channel or cable pit are in good condition There is no collected water or scattered materials in the cable channel Make sure the bearers in cable channel are securely fastened and are not rusted or loose Sheath and armoured material of armoured cables should not be seriously rusted 9...

Page 305: ... any other facilities built inside In the area of photovoltaic system it s forbidden to set up facility that may affect the operation and saferty of the photovoltaic system 4 APPENDIXES 4 1 Minutes about a Debug Solution Confirmation Meeting Confirming air conditioner debug solution to the project Theme Time Place Participants Contents 1 2 3 4 2 Visual Inspection Checklist of the Debug System Visu...

Page 306: ...ting Number and capacity of running IDUs State parameter Unit Prestart 30min 60min 90min ODU Outdoor temperature F Power voltage V Frequency Hz Compressor current A Discharge temperature F System temperature under high pressure F System temperature under low pressure F 1 IDU Rated capacity kW Ambient temperature F IDU gear Gear Outlet temperature F Outlet speed M S Noise dB Water tray 2 IDU Rated ...

Page 307: ...36 353 31 27 16 6 3 07 44 53 7 44 6 9 99 144 89 41 105 8 24 95 361 87 26 14 8 3 19 46 27 8 46 4 10 30 149 39 42 107 6 25 56 370 72 25 13 0 3 32 48 15 9 48 2 10 61 153 89 43 109 4 26 18 379 71 24 11 2 3 45 50 04 10 50 0 10 93 158 53 44 111 2 26 81 388 85 23 9 4 3 59 52 07 11 51 8 11 25 163 17 45 113 0 27 45 398 13 22 7 6 3 73 54 10 12 53 6 11 59 168 10 46 114 8 28 10 407 56 21 5 8 3 88 56 27 13 55 ...

Page 308: ...9 4 1 244 3 047 3 37 4 42 14 0 866 94 201 2 1 207 3 054 4 39 2 40 09 0 899 95 203 1 171 3 061 5 41 38 15 0 931 96 204 8 1 136 3 068 6 42 8 36 32 0 965 97 206 6 1 103 3 074 7 44 6 34 58 0 998 98 208 4 1 071 3 08 8 46 4 32 94 1 033 99 210 2 1 039 3 086 9 48 2 31 38 1 067 100 212 1 009 3 092 10 50 29 9 1 102 101 213 8 0 98 3 098 11 51 8 28 51 1 138 102 215 6 0 952 3 103 12 53 6 27 18 1 174 103 217 4 ...

Page 309: ... 226 51 123 8 5 179 2 453 141 285 8 0 338 3 227 52 125 6 4 986 2 477 142 287 6 0 33 3 229 53 127 4 4 802 2 5 143 289 4 0 322 3 231 54 129 2 4 625 2 522 144 291 2 0 314 3 232 55 131 4 456 2 544 145 293 0 307 3 234 56 132 8 4 294 2 566 146 294 8 0 299 3 235 57 134 6 4 139 2 586 147 296 6 0 292 3 237 58 136 4 3 99 2 607 148 298 4 0 286 3 238 59 138 2 3 848 2 626 149 300 2 0 279 3 24 60 140 3 711 2 64...

Page 310: ...7 188 6 1 996 3 001 8 17 6 99 13 0 554 88 190 4 1 934 3 009 7 19 4 94 0 579 89 192 2 1 875 3 017 6 21 2 89 17 0 605 90 194 1 818 3 025 5 23 84 61 0 631 91 195 8 1 763 3 033 4 24 8 80 31 0 658 92 197 6 1 71 3 04 3 26 6 76 24 0 686 93 199 4 1 658 3 047 2 28 4 72 41 0 714 94 201 2 1 609 3 054 1 30 2 68 79 0 743 95 203 1 561 3 061 0 32 65 37 0 773 96 204 8 1 515 3 068 1 33 8 62 13 0 804 97 206 6 1 47 ...

Page 311: ... 273 2 0 5351 3 214 39 102 2 11 06 2 125 135 275 0 5219 3 216 40 104 10 62 2 155 136 276 8 0 509 3 218 41 105 8 10 2 2 185 137 278 6 0 4966 3 22 42 107 6 9 803 2 215 138 280 4 0 4845 3 222 43 109 4 9 42 2 243 139 282 2 0 4727 3 224 44 111 2 9 054 2 272 140 284 0 4613 3 226 45 113 8 705 2 299 141 285 8 0 4502 3 227 46 114 8 8 37 2 326 142 287 6 0 4394 3 229 47 116 6 8 051 2 353 143 289 4 0 4289 3 2...

Page 312: ...608 1 969 13 8 6 323 94 0 099 78 172 4 6 542 1 995 12 10 4 306 23 0 104 79 174 2 6 3315 2 021 11 12 2 289 61 0 11 80 176 6 1288 2 046 10 14 274 02 0 116 81 177 8 5 9336 2 071 9 15 8 259 37 0 123 82 179 6 5 7457 2 096 8 17 6 245 61 0 129 83 181 4 5 5647 2 12 7 19 4 232 67 0 136 84 183 2 5 3903 2 144 6 21 2 220 5 0 143 85 185 5 2223 2 168 5 23 209 05 0 151 86 186 8 5 0605 2 191 4 24 8 195 97 0 158 8...

Page 313: ...14 34 93 2 33 453 0 759 125 257 1 6821 2 825 35 95 32 088 0 784 126 258 8 1 6402 2 835 36 96 8 30 787 0 809 127 260 6 1 5996 2 845 37 98 6 29 544 0 835 128 262 4 1 5602 2 855 38 100 4 28 359 0 86 129 264 2 1 522 2 864 39 102 2 27 227 0 886 130 266 1 485 2 873 40 104 26 147 0 913 131 267 8 1 449 2 882 41 105 8 25 114 0 94 132 269 6 1 4141 2 891 42 107 6 24 128 0 967 133 271 4 1 3803 2 9 43 109 4 23...

Page 314: ...1 0 297 33 91 4 2048 297 2 098 22 7 6 373 54 1 0 312 34 93 2 2100 304 5 2 153 21 5 8 388 56 3 0 328 35 95 2153 312 2 2 21 20 4 403 58 4 0 344 36 96 8 2208 320 2 2 268 19 2 2 418 60 6 0 36 37 98 6 2263 328 1 2 327 18 0 4 434 62 9 0 377 38 100 4 2320 336 4 2 388 17 1 4 450 65 3 0 394 39 102 2 2377 344 7 2 448 16 3 2 467 67 7 0 412 40 104 2436 353 2 2 511 15 5 484 70 2 0 43 41 105 8 2495 361 8 2 574 ...

Page 315: ... 11 12 2 558 80 9 1 413 66 86 8 46 6 7 0 389 10 14 577 83 7 1 451 65 85 48 7 0 393 9 15 8 597 86 6 1 491 64 83 2 51 7 4 0 399 8 17 6 618 89 6 1 533 63 81 4 54 7 8 0 405 7 19 4 639 92 7 1 575 62 79 6 57 8 3 0 411 6 21 2 661 95 8 1 619 61 77 8 61 8 8 0 419 5 23 684 99 2 1 665 60 76 64 9 3 0 425 4 24 8 707 102 5 1 711 59 74 2 68 9 9 0 433 3 26 6 730 105 9 1 757 58 72 4 72 10 4 0 441 2 28 4 754 109 3 ...

Page 316: ...1 37 8 0 819 25 77 1664 241 3 3 625 30 22 272 39 4 0 841 26 78 8 1708 247 7 3 713 29 20 2 283 41 0 863 27 80 6 1754 254 3 3 805 28 18 4 295 42 8 0 887 28 82 4 1801 261 1 3 899 27 16 6 307 44 5 0 911 29 84 2 1848 268 3 993 26 14 8 319 46 3 0 935 30 86 1897 275 1 4 091 25 13 332 48 1 0 961 31 87 8 1946 282 2 4 189 24 11 2 345 50 0 987 32 89 6 1996 289 4 4 289 23 9 4 359 52 1 1 015 33 91 4 2048 297 4...

Page 317: ...Circle 10474100 1 4 Axial Flow Fan Sub Assy 10338702 1 5 Brushless DC Motor 1570412404 1 6 Nozzle for Adding Freon 06120012 2 7 One Way Valve 07335210 1 8 4 Way Valve 43000339 1 9 Filter 07218603 1 10 Rear Grill 01576013 1 11 Condenser Assy 011002060132 1 12 Strainer 07415200002 5 13 Electromagnetic Valve 43044100097 3 14 Nozzle for Adding Freon 06130002 1 15 Discharge Charge Valve 07334100002 2 1...

Page 318: ...50 1 34 Magnet Coil Electromagnetic Valve 4304800001902 1 35 4 Way Valve Coil 43048000018 1 36 Magnet Coil Electromagnetic Valve 4304800001901 1 37 Magnet Coil Electromagnetic Valve 43048000019 1 38 Electric Expand Valve Fitting 4304413203 1 39 Electric Expand Valve Fitting 4304413204 1 40 Pressure Sensor 32218000009 1 41 Pressure Sensor 32218000008 1 42 Electrical Heater Compressor 76614100002 1 ...

Page 319: ...ushless DC Motor 1570412404 1 6 Brushless DC Motor 1570412403 1 7 Nozzle for Adding Freon 06120012 2 8 One way Valve 07335210 1 9 4 way Valve 43000339 1 10 Filter 07218603 1 11 Upper Cover Plate back 01264100005P 1 12 Rear Grill 01574100001 1 13 Condenser Assy 0112410009001 1 14 Strainer 07415200002 5 15 Electromagnetic Valve 43044100097 3 16 Nozzle for Adding Freon 06130002 1 17 Discharge Charge ...

Page 320: ...100004P 2 37 Sensor Sub assy 390002060035 1 38 4 Way Valve Coil 43048000018 1 39 Magnet Coil electromagnetic valve 4304800001902 1 40 Magnet Coil electromagnetic valve 4304800001901 1 41 Magnet Coil electromagnetic valve 43048000019 1 42 Electric Expand Valve Fitting 4304413203 1 43 Electric Expand Valve Fitting 4304413204 1 44 Pressure Sensor 32218000009 1 45 Pressure Sensor 32218000008 1 46 Elec...

Page 321: ...JF00303868 ...

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