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DC Inverter Multi VRF System 

26 

(2)  Following circumstances are not malfunctions. 

Malfunction 

Reason 

Unit doesn’t run. 

Unit starts up immediately after it is 
turned off. 

Overload protection switch makes it run after a 3-min 
delay. 

Power is just turned on. 

Standby operation lasts for about 1min. 

Mist comes from 
the unit. 

Under cooling. 

Indoor air with high humidity is cooled rapidly. 

Noise is emitted. 

Slight cracking sound is heard when unit 
is just turned on. 

It is the noise when electronic expansion valve is 
initialized. 

There is consecutive sound when 
cooling. 

It is the sound for gas refrigerant flowing in the unit. 

There is sound when unit starts or stops.  It is the sound when gas refrigerant stops flowing. 
There is slight and consecutive sound 
when unit is running or after running. 

This is the sound of drainage operation. 

Cracking sound is heard when unit is 
running or after running. 

This is the sound caused by the expansion of panel 
and other parts of the unit due to temperature 
change. 

Unit blows out 
dust. 

Unit starts up after not operating for a 
long time. 

Dust in indoor unit is blown out. 

Unit emits odor. 

Under operation. 

Unit absorbs the room odor and then blows it out. 

7 Error Indications 

Inquiry method of error indication: 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 
Indoor Units Setting Error 

d7 

Humidity Sensor Error 

L1 

Indoor Fan Protection 

LA 

Indoor Units Incompatibility 
Error 

d8 

Water Temperature Sensor 
Error 

L2 

E-heater Protection 

LH 

Low Air Quality Warning 

d9 

Jumper Cap Error 

L3 

Water Full Protection 

LC 

Outdoor-Indoor 
Incompatibility Error 

dA 

Indoor Unit 
Hardware Address Error 

L4 

Wired Controller Power 
Supply Error 

d1 

Indoor Unit Circuit Board 
Error 

dH 

Wired Controller Circuit 
Board Error 

L5 

Anti-freezing Protection 

d3 

Ambient Temperature Sensor 
Error 

dC 

Capacity DIP Switch 
Setting Error 

L7 

No Master Indoor Unit 
Error 

d4 

Inlet Pipe Temperature 
Sensor Error 

dL 

Outlet Air Temperature 
Sensor Error 

L8 

Power Insufficiency 
Protection 

d6 

Outlet Pipe Temperature 
Sensor Error 

dE 

Indoor Unit CO

2

 Sensor 

Error 

o1 

Over low voltage of IDU 
bus 

o2 

Over high voltage of IDU bus 

o3 

IDU IPM module protection 

o4 

IDU startup failure 

o5 

IDU overcurrent protection 

o6 

IDU current detecting 
circuit error 

o7 

IDU non-synchronism 
protection 

o8 

IDU drive communication 
error 

o9 

Communication error of 
IDU master controller 

oA 

Over high temperature of 
IDU module 

ob 

Temperature sensor error of 
IDU module 

oC 

IDU charging circuit error 

o0 

Other drive error 

db 

Special Code:   
Field Debugging Code 

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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...

Страница 35: ......

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