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Multi Variable Air Conditioners Ducted Type Indoor Unit 

21 

7 Table of Error Codes for Indoor Unit 

Error 

Code 

Content 

Error 

Code 

Content 

Error 

Code 

Content 

L0 

Indoor Unit Error 

LA 

Indoor Units 
Incompatibility Error 

d9 

Jumper Cap Error 

L1 

Indoor Fan Protection 

LH 

Low Air Quality Warning 

dA 

Indoor Unit Network 
Address Error 

L2 

E-heater Protection 

LC 

ODU-IDU 
Incompatibility Error 

dH 

Wired Controller PCB 
Error 

L3 

Water Full Protection 

d1 

Indoor Unit PCB Error 

dC 

Capacity DIP Switch 
Setting Error. 

L4 

Wired Controller Power 
Supply Error 

d3 

Ambient Temperature 
Sensor Error 

dL 

Outlet Air Temperature 
Sensor Error 

L5 

Freeze protection 

d4 

Inlet Pipe Temperature 
Sensor Error 

dE 

Indoor Unit CO

2

 Sensor 

Error 

L7 

No Master Indoor Unit 
Error 

d6 

Outlet Pipe 
Temperature Sensor 
Error 

dy 

Water Temperature 
Sensor Error 

L8 

Power Insufficiency 
Protection 

d7 

Humidity Sensor Error 

C0 

Communication Error 

L9 

Quantity Of Group 
Control Indoor Units 
Setting Error 

d8 

Water Temperature 
Error 

AJ 

Filter Cleaning 
Reminder 

db 

Special Code: Field Debugging Code 

8 Troubleshooting 

The air conditioner is not expected to be serviced by users. Incorrect repair may cause electric 

shock or fire, so please contact an authorized service center for professional service. The following 

checks prior to contact may save your time and money.   

Phenomenon 

Troubleshooting 

The unit can’t start. 

  Power supply is not connected. 

  Circuit breaker tripping caused by leakage of electricity. 

  Input voltage is too low. 

  Defect of main PC-board. 

The unit stops after running for a 
while. 

  The inlet or outlet of ODU or IDU are blocked by obstacle.   

Poor cooling effect. 

  The filter is dirty. 

  Too heavy heat load of room (e.g. too many people). 

  Door or windows is open. 

  Inlet and outlet of IDU are blocked. 

  Setting temperature is too high. 

  Refrigerant is insufficient (e.g. refrigerant leakage). 

Poor heating effect. 

  The filter is dirty. 

  Door or window is open. 

  Setting temperature is too low. 

  Refrigerant is insufficient (e.g. refrigerant leakage). 

Indoor fan doesn’t start up 
during heating. 

  At starting, the IDU fan could not operate till the heat exchange 

become hot, for preventing delivering the cool air. 

  At defrosting, the IDU fan stopped due to system switch to cooling 

mode. For preventing delivering the cool air, and resume operating 
after defrosting. 

Note: 

If air conditioner still fails to work normally after checking and handling as described above, 

please stop using it immediately and contact local service center for assistance.

Содержание ULTRA heating GMVND07PLS/A-T

Страница 1: ...ginal Instructions Commercial Air Conditioners Multi Variable Air Conditioners Ducted Type Indoor Unit Models GMV ND07PLS A T U GMV ND09PLS A T U GMV ND12PLS A T U GMV ND14PLS A T U GMV ND18PLS A T U...

Страница 2: ...eration of this unit please read and follow the instructions carefully 4 During operation total capacity of indoor units should not exceed the total capacity of outdoor units Otherwise poor effect of...

Страница 3: ...nd knowledge unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety Children should be supervised to ensure that they do not pl...

Страница 4: ...nage System Testing 9 4 4 Installation of Air Duct 12 4 5 Installation of Wired Controller 15 5 Wiring Work 15 5 1 Connection of Wire and Patch Board Terminal 15 5 2 Power Cord Connection 16 5 3 Conne...

Страница 5: ...piping and wiring are correct to avoid water leakage refrigerant leakage electric shock or fire etc 9 Do not insert fingers or objects into air outlet inlet grille 10 Open the door and window and kee...

Страница 6: ...onous gas will emerge if the refrigerant gas meets fire 26 Volatile liquid such as diluent or gas will damage the unit appearance Only use soft cloth with a little neutral detergent to clean the outer...

Страница 7: ...together with the hanger bolt for installing the unit 5 M10 Nut M10X8 4 Nut 4 To be used together with the hanger bolt for installing the unit 6 M10 Washer Spring Washer M10X2 6 4 To be used together...

Страница 8: ...ence and noise Even if the distance is 1m 39 3 8 in when there is strong electric wave noise may still occur Unit mm in Fig 3 2 1 1 The unit shall be installed in accordance with national standards or...

Страница 9: ...Indoor Unit and Outdoor Unit Fig 3 3 2 Material Type Total Length L m ft of Communication Cable between Indoor Unit and Indoor Outdoor Unit Wire size mm2 AWG Material Standard Remarks Light Ordinary p...

Страница 10: ...ies please lower the capacity appropriately according to the specifications of power cord and air switch provided by manufacturer 4 Install cut off device near the unit The minimum distance between ea...

Страница 11: ...15 24 1 4 200 7 7 8 121 4 3 4 928 36 1 2 161 6 3 8 980 38 5 8 GMV ND22 PLS A T U 4 1 2 Suspend the indoor unit 1 Drill bolt holes and install bolts 1 Stick the reference cardboard on the installation...

Страница 12: ...r return outlet or air outlet you can need to reinforce the ceiling to prevent vibration For detailes please consult user or builder If the strength of the ceiling is not good please install a beam br...

Страница 13: ...according to the following fig and arrange insulation to the drainage pipe Improper installation may lead to water leakage and damp the furniture and other things in the room 4 You can buy normal hard...

Страница 14: ...onnecting several drain pipes follow the instruction as indicated in Fig 4 3 4 Choose the drain collecting pipe that matches with unit capacity Fig 4 3 4 5 Install the trap as shown in following Fig 4...

Страница 15: ...he raising pipe is vertical with the unit the raising height should be less than C Unit mm in Fig 4 3 9 Unit mm in Model A B C GMV ND07PLS A T U GMV ND09PLS A T U GMV ND12PLS A T U GMV ND14PLS A T U G...

Страница 16: ...kage occur 3 It is strongly recommend to do the drain test before ceiling decoration Fig 4 3 11 4 4 Installation of Air Duct Note There should be insulating layer on air out duct air return duct and f...

Страница 17: ...een 3 Canvas Duct 7 Main Supply Air Duct 4 Return Air Inlet 8 Supply Air Outlet 2 Installation of Circular Duct Fig 4 4 2 No Name No Name 1 Return Air Duct 6 Transition Pipe 2 Canvas Duct 7 Supply Air...

Страница 18: ...bottom as shown in Fig 4 4 5 Fig 4 4 5 2 If the bottom return air is desired just change the place of the rectangular flange and the return air cover plate 3 Connect one end of the return air duct to...

Страница 19: ...ic shock 2 Please carefully read the wiring diagram before carry out the wiring work incorrect wiring could cause malfunction or even damage the unit 3 The unit should be powered by independent circui...

Страница 20: ...e ring tongue terminal and tighten by crimping tool 4 Use the screwdriver for tightening the terminal Unit mm in Fig 5 1 1 Fig 5 1 2 5 2 Power Cord Connection NOTICE Every unit should be equipped with...

Страница 21: ...n in fig 5 3 2 terminal resistor is provided with each ODU 5 4 Connect Communication Wire of Wired Controller 1 Open electric box cover of indoor unit 2 Let the communication wire go through the rubbe...

Страница 22: ...t must be set as master one and slave one 4 One wired controller can control 16 indoor unitS in maximum at the same time as shown in fig 5 5 1 1 The type of indoor units must be the same if they are c...

Страница 23: ...Multi Variable Air Conditioners Ducted Type Indoor Unit 19 Fig 5 5 1...

Страница 24: ...e a vacuum cleaner to remove dust If the filters are dirty wash them with warm water and mild detergent and dry the filters in the shade 2 If the unit used in the environment with much dust please cle...

Страница 25: ...epair may cause electric shock or fire so please contact an authorized service center for professional service The following checks prior to contact may save your time and money Phenomenon Troubleshoo...

Страница 26: ......

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