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DC Inverter Multi VRF System 

1 Safety Notices (Please be sure to abide them) 

 

If not abide them strictly, it may cause severe damage to the unit or the people. 

 

If not abide them strictly, it may cause slight or medium damage to the unit or the people. 

 

This sign indicates that the items must be prohibited. Improper operation may cause severe 
damage or death to people. 

 

This sign indicates that the items must be observed. Improper operation may cause damage 
to people or property. 

 

(1)  This product can’t be installed at corrosive, inflammable or explosive environment or the place with special 

requirements, such as kitchen. Otherwise, it will affect the normal operation or shorten the service life of the unit, 
or even cause fire hazard or serious injury. As for the above special places, please adopt special air conditioner 
with anti-corrosive or anti-explosion function. 

(2)  Follow this manual to complete the installation work. Please read this manual carefully before turning on or 

repairing the unit 

(3)  Diameter of power cord should be large enough. The damaged power cord and connection wire must be 

replaced with special cables. 

(4)  When the power cord is connected, please fix the electric box cover properly to avoid safety accidents. 
(5)  Never fail to comply with the nitrogen-charging welding process. Do charge nitrogen when welding the pipes. 
(6)  Never short circuit or cancel the pressure switch to prevent unit damage. 
(7)  As for the unit controlled by the wired controller, connect the wired controller well firstly and then energize the 

unit; otherwise, the unit can’t operate normally. 

(8)  When installation is finished, please check whether the drainage pipes, pipelines and electric wires are 

connected correctly to avoid water leakage, refrigerant leakage, electric shock or fire, etc. 

(9)  Do not insert fingers or objects into air outlet or air return grille. 
(10)  Open the door and window frequently to keep good ventilation for avoiding oxygen deficit when gas heater or oil 

heater is used in the room. 

(11)  Never plug in or unplug the power plug directly to turn on or turn off the air conditioner. 
(12)  Once the air conditioner is turned on, it can be turned off only after it has operated for 5min at least; otherwise, it 

will affect the oil return of compressor. 

(13)  Do not allow children to operate this air conditioner. 
(14)  Do not operate this air conditioner with wet hands. 
(15)  The air conditioner can be cleaned only when it has been turned off and the power has been cut off; otherwise, it 

may cause electric shock or injury. 

(16)  Never spray or flush water towards the air conditioner; otherwise, malfunction or electric shock may happen. 
(17)  Do not expose the air conditioner to the moist or corrosive environment. 
(18)  Under cooling mode, please don't set the room temperature too low; keep the temperature difference between 

indoor and outdoor within 5°C (41°F). 

(19)  Do not repair the unit by yourself. Wrong maintenance may cause electric shock or fire hazard. Please contact 

Gree appointed service center for help. 

(20)  Before installation, please check whether the power supply is complied with that specified on the nameplate and 

check the safety of the power supply. 

(21)  Installation should be conducted by the dealer or qualified personnel. Please do not attempt to install the air 

conditioner by yourself. Improper installation may lead to water leakage, electric shock or fire hazard, etc. 

(22)  Be sure to use special accessories and parts for installation to prevent water leakage, electric shock and fire 

hazard, etc. 

(23)  The air conditioner must be grounded reliably for avoiding electric shock. Please do not connect the earthing wire 

to gas pipe, water pipe, lightning rod or telephone line. 

(24)  Put through the power 8 hours in advance before operation. Do not cut off the power when the air conditioner 

stops operation for only about one night (protect the compressor). 

(25)  If refrigerant leakage happens, please ventilate the room immediately. 

Содержание GMV-12WP/A-T

Страница 1: ...Owner s Manual Original Instructions Commercial Air Conditioners DC Inverter Multi VRF System Model GMV 12WP A T U...

Страница 2: ...soon as possible and provide the following information 1 Content on the name plate model number cooling capacity production code ex factory date 2 Malfunction details before and after the malfunction...

Страница 3: ...t is directly caused by corrosive gas 4 After verification defects are due to improper operation during transportation of product 5 Operate repair maintain the unit without abiding by instruction manu...

Страница 4: ...or Installation Maintenance and Relocation 5 4 3 Assembly procedures 6 4 4 Connection Pipe 9 4 5 Installation of Connection Pipe 12 4 6 Vacuum Pumping Refrigerant Adding 16 4 7 Electric Wiring 17 5 Ch...

Страница 5: ...the door and window frequently to keep good ventilation for avoiding oxygen deficit when gas heater or oil heater is used in the room 11 Never plug in or unplug the power plug directly to turn on or t...

Страница 6: ...be within 50 135 of that of the outdoor unit Model Min sets of connectable IDUs Max sets of connectable IDUs GMV 12WP A T U 1 2 3 Can be connected to various indoor units When any one of the indoor u...

Страница 7: ...m or flammable gas 4 Children under 10 years old must be supervised not to operate the unit 5 Select a location which is out of children s reach Keep the unit away from children 6 Make sure the locati...

Страница 8: ...E If more than one accessory is to be used use the maximum dimension If the wall thickness is more than 350mm 13 3 4inch A 6 35mm 1 4inch a sleeve extension must be used 3 3 Piping Work Requirements R...

Страница 9: ...at high pressure side When the pressure gauge reads 0 0 05 MPa completely close the valve gas valve at low pressure side Then stop operation immediately and cut off the power 4 When recycling the ref...

Страница 10: ...e unit is to be installed in a small room relevant measures must be taken to prevent the refrigerant concentration in the room from exceeding the limit when the refrigerant leaks resulting in hypoxia...

Страница 11: ...ing the complete unit remove the panel to prevent damage 4 3 4 Install Main Unit Fig 7 Push the unit into the outer case Fig 8 Install the unit inside the metal outer case and then use screws to fix i...

Страница 12: ...han 15mm 3 5inch 2 When the drain pipe is installed the highest position of the drain pipe can t exceed 3 5m 11 1 2feet above the bottom of unit and a water loop must be set at the highest position 3...

Страница 13: ...stall the panel on the unit and press e buckle on both sides 4 4 Connection Pipe 4 4 1 Schematic Diagram of Piping Connection Fig 13 4 4 2 Allowable Length and Height Difference of Connection Pipe Y t...

Страница 14: ...b Equivalent length 30 5 100 1 8 From the 1st branch to the farthest indoor pipe 15 49 2 8 b Height difference between ODU and IDU ODU at upper side 15 49 2 8 ODU at lower side 15 49 2 8 Height differ...

Страница 15: ...Y type branch C 68200 FQ01A A 68200 C 102400 FQ01B A 102400 C 238800 FQ02 A 238800 C 460600 FQ03 A 460600 C FQ04 A 4 4 5 Dimension of Pipe between Indoor Branches Select pipe between indoor branches a...

Страница 16: ...ction pipe should be as short as possible so is the height difference between indoor and outdoor units Keep the number of bends as little as possible Radius of curvature should be as large as possible...

Страница 17: ...n Fig 22 Make sure indoor pipe is correctly connected Improper location of the center will prevent flared nut from being securely twisted Thread of nut will get damaged if the flared nut is twisted fo...

Страница 18: ...or space limit outlet pipe can be installed from the front right or rear side Fig 24 4 5 6 Installation of Y type Branch 1 Y type Branch Fig 25 2 Y type branch has several pipe sections with different...

Страница 19: ...able bear the pipe temperature For heat pump unit liquid pipe should bear 70 C 158 F or above and gas pipe should bear 120 C 248 F or above For cooling only unit both liquid pipe and gas pipe should...

Страница 20: ...door valve as shown below Fig 28 4 6 2 Refrigerant Adding 1 Refrigerant quantity of outdoor unit before delivery Model GMV 12WP A T U Refrigerant Qty kg oz 0 8 28 2 1 The refrigerant amount charged be...

Страница 21: ...8 Total length of each liquid pipe 6 35 A a b 5 5 5 15m 49 1 8feet Quantity of indoor unit 2 sets Therefore the minimum quantity of additional refrigerant 0 2 2 15 0 022 0 73kg 25 7oz 4 7 Electric Wir...

Страница 22: ...o the following Liquid pipe Gas pipe Drain pipe Other places that are deemed as not secure by professional technicians 1 Before starting work check that power is not being supplied to the indoor unit...

Страница 23: ...wiring reference of power supply and communication cable If there are differences between the figure structure and actual unit please refer to the actual unit 4 For engineering wiring please refer to...

Страница 24: ...transportation 6 Calculate the quantity of refrigerant that needs to be added according to the pipe length Pre charge the refrigerant In case that the required charging quantity is not reached while...

Страница 25: ...em has confirmed the quantity 2s later next step starts 00 16 Display circularly 00 16 displays the quantity of indoor unit identified by the system 05_ Detect ODU s internal communication and capacit...

Страница 26: ...09_ Refrigerant judgments before startup 09 U4 Display circularly System is lack of refrigerant and display will be as in the left Please cut off power of IDU and ODU and check if there is leakage on...

Страница 27: ...5s the system will enter normal standby status 15 error code Display circularly Malfunction occurs when debugging for cooling mode 16_ Heating debugging 16 AH Display circularly Debugging for heating...

Страница 28: ...n the condensing temp will be lower 5 evaporating temp C F When ambient temp in cool mode is 25 35 C 77 95 F the evaporating temp is 0 10 C 32 50 F When ambient temp in heat mode is above 5 C 23 F the...

Страница 29: ...s What to do Unit doesn t work Fuse or circuit breaker is cut off Replace fuse or reset the circuit breaker Power failure Restart unit when power is restored Power is not connected Connect the power R...

Страница 30: ...ication combine division symbol and content symbol to check the corresponding error Indoor Error Code Content Error Code Content Error Code Content L0 Indoor Unit Error L9 Quantity Of Group Control In...

Страница 31: ...pressure is too low bH Clock of system is abnormal P0 malfunction of driving board of compressor uniform H0 Malfunction of driving board of fan uniform P1 Driving board of compressor operates abnormal...

Страница 32: ...rigerant automatically nH Heating only unit AE Charge refrigerant manually nC Cooling only unit AF Fan nE Negative code Error Code Content Error Code Content U0 Preheat time of compressor is insuffici...

Страница 33: ...ent of air conditioners 8 1 Outdoor Heat Exchanger Outdoor heat exchanger shall be cleaned regularly which is at least once every two months You can use a dust catcher with nylon brush to clean away t...

Страница 34: ...nitrogen or refrigerant to conduct the tests 9 After sales Service If there s quality defect or other problems in the product please contact Gree local after sales service department for help Warranty...

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