Contents
LG ARNU073MAA4 Ceiling Concealed Duct Mid Static Air Conditioner
Specifications
- Type: Ceiling Concealed Duct – Mid Static
- Model: ARNU073MAA4, ARNU093MAA4,
ARNU123MAA4 - Cooling Capacity: 2.20 kW – 4.00 kW
- Heating Capacity: 1,900 kcal/h – 3,400 kcal/h
- Casing: Galvanized Steel Plate
- Dimensions (W x H x D): 900mm x 245mm x 700mm / 35-7/16″ x 9-21/32″ x 27-9/16″
- Coil Rows x Columns x FPI: 2 x 13 x 18
- Fan Type: Sirocco Fan
- Motor Output: 165W x 1
- Air Flow Rate: 8/7/6 CMM (High/Medium/Low) or 283/247/212 CFM
- Drive: Direct
- Motor Type: BLDC
- Temperature Control: Microprocessor, Thermostat for cooling and heating
- Air Filter: Pre-filter
- Safety Device: Fuse
- Pipe Connections: Liquid Side: 6.35mm (1/4″), Gas Side: 12.7mm (1/2″)
- Drain Pipe (Internal Dia.): 25mm (1″)
- Net Weight: 28.4kg (62.6lbs)
- Sound Pressure Level: 28/27/25 dB(A)+1 (High/Medium/Low)
- Power Supply: 1,208/230V, 60Hz
- Refrigerant Control: EEV (Electronic Expansion Valve)
- Communication Cable: AWG 18 x 2C
Installation
- Ensure the unit is placed in a suitable location with proper airflow and access for maintenance.
- Connect the liquid and gas side pipe connections securely according to the specified diameters.
Multi V Air Conditioner
SVC MANUAL(Exploded View)
MODEL : ARNU073MAA4
- ARNU093MAA4
- ARNU123MAA4
- ARNU153MAA4
- ARNU183MAA4
- ARNU243MAA4
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual. Only for authorized service personnel.
Specification
| Type | Ceiling Concealed Duct -Mid Static | ||||
| Model | Unit | ARNU073MAA4 | ARNU093MAA4 | ARNU123MAA4 | |
|
Cooling Capacity |
kW | 2.20 | 2.80 | 3.60 | |
| kcal/ h | 1,900 | 2,400 | 3,100 | ||
| Btu/ h | 7,500 | 9,600 | 12,300 | ||
|
Heating Capacity |
kW | 2.50 | 3.20 | 4.00 | |
| kcal/ h | 2,200 | 2,800 | 3,400 | ||
| Btu/ h | 8,500 | 10,900 | 13,600 | ||
| Casing | Galvanized Steel Plate | Galvanized Steel Plate | Galvanized Steel Plate | ||
| Dimensions (W x H x D) |
Body |
mm | 900 x 245 x 700 | 900 x 245 x 700 | 900 x 245 x 700 |
| inch | 35-7/ 16 x 9-21/ 32 x 27-9/ 16 | 35-7/ 16 x 9-21/ 32 x 27-9/ 16 | 35-7/ 16 x 9-21/ 32 x 27-9/ 16 | ||
|
Coil |
Rows x Columns x FPI | 2 × 13 × 18 | 2 x 13 x 18 | 2 x 13 x 18 | |
| Face Area | m2(sq.ft) | 0.19 (2.05) | 0.19 (2.05) | 0.19 (2.05) | |
|
Fan |
Type | Sirocco Fan | Sirocco Fan | Sirocco Fan | |
| Motor Output x Number | W | 165 x 1 | 165 x 1 | 165 x 1 | |
| Running Current | A | 1.7 | 1.7 | 1.7 | |
| Air Flow Rate(H/ M/ L) (High Mode-Factory Set) Ext Static Pressure | CMM | 8 / 7 / 6 | 10 / 9 / 8 | 14 / 12 / 10 | |
| CFM | 283 / 247 / 212 | 353 / 318 / 283 | 494 / 424 / 353 | ||
| mmAq(in.Aq) | 6(0.24) | 6(0.24) | 6(0.24) | ||
| Drive | Direct | Direct | Direct | ||
| Motor Type | BLDC | BLDC | BLDC | ||
| Temperature Control | Microprocessor, Thermostat for
cooling and heating |
Microprocessor, Thermostat for
cooling and heating |
Microprocessor, Thermostat for
cooling and heating |
||
| Sound Absorbing Thermal Insulation Material | Foamed polystrene | Foamed polystrene | Foamed polystrene | ||
| Air Filter | Pre-filter | Pre-filter | Pre-filter | ||
| Safety Divice | Fuse | Fuse | Fuse | ||
|
Pipe Connections |
Liquid Side | mm(inch) | Φ6.35 (1/ 4) | Φ6.35 (1/ 4) | Φ6.35 (1/ 4) |
| Gas Side | mm(inch) | Φ12.7 (1/ 2) | Φ12.7 (1/ 2) | Φ12.7 (1/ 2) | |
| Drain Pipe(Internal Dia.) | mm(inch) | 25 (1) | 25 (1) | 25 (1) | |
| Net Weight | Body | kg(lbs) | 28.4(62.6) | 28.4(62.6) | 28.4(62.6) |
| Sound Pressure Level (H/ M/ L) | dB(A)+1 | 28 / 27 / 25 | 28 / 27 / 26 | 31 / 29 / 28 | |
| Power Supply | Ø, V, H z | 1, 208 / 230, 60 | 1, 208 / 230, 60 | 1, 208 / 230, 60 | |
| Refrigerant Control | – | EEV | EEV | EEV | |
| Communication Cable(VCTF-SB) | AWG × cores | AWG 18 x2C | AWG 18 x2C | AWG 18 x 2C | |
Notes:
- Capacities are based on the following conditions:
Cooling- Indoor temp. 27°C[80.6°F]DB/ 19°C[66.2°F]WB
- Outdoor temp. 35°C[95°F]DB/ 24°C[75.2°F]WB
- Interconnecting Piping Length 7.5m(24.6ft)
- Level Difference of Zero
Heating - Indoor temp. 20°C[68°F]DB/ 15°C[59°F]WB
- Outdoor temp. 7°C[44.6°F]DB/ 6°C[42.8°F]WB
- Interconnecting Piping Length 7.5m(24.6ft)
- Level Difference of Zero
- Capacities are net capacities
- Due to our policy of innovation some specifications may be changed without prior notification
- To be added for more available Models
- EEV : Electronic Expansion Valve
- Noise Level is High Mode (factory set)
Conversion Formula
- kcal/h= kW x 860
- Btu/h = kW x 3412
- cfm = m3/min x 35.3
- l/s = CMM x 1000/60
| Type | Ceiling Concealed Duct -Mid Static | ||||
| Model | Unit | ARNU153MAA4 | ARNU183MAA4 | ARNU243MAA4 | |
|
Cooling Capacity |
kW | 4.50 | 5.60 | 7.10 | |
| kcal/ h | 3,900 | 4,800 | 6,100 | ||
| Btu/ h | 15,400 | 19,100 | 24,200 | ||
|
Heating Capacity |
kW | 5.00 | 6.30 | 8.00 | |
| kcal/ h | 4,300 | 5,400 | 6,900 | ||
| Btu/ h | 17,100 | 21,500 | 27,300 | ||
| Casing | Galvanized Steel Plate | Galvanized Steel Plate | Galvanized Steel Plate | ||
| Dimensions (W x H x D) |
Body |
mm | 900 x 245 x 700 | 900 x 245 x 700 | 900 x 245 x 700 |
| inch | 35-7/ 16 x 9-21/ 32 x 27-9/ 16 | 35-7/ 16 x 9-21/ 32 x 27-9/ 16 | 35-7/ 16 x 9-21/ 32 x 27-9/ 16 | ||
|
Coil |
Rows x Columns x FPI | 2 x 13 x 18 | 2 x 13 x 18 | 3 x 13 x 18 | |
| Face Area | m2(sq.ft) | 0.19 (2.05) | 0.19 (2.05) | 0.19 (2.05) | |
|
Fan |
Type | Sirocco Fan | Sirocco Fan | Sirocco Fan | |
| Motor Output x Number | W | 165 x 1 | 165 x 1 | 165 x 1 | |
| Running Current | A | 1.7 | 1.7 | 1.7 | |
| Air Flow Rate(H/ M/ L) (High Mode-Factory Set) Ext Static Pressure | CMM | 15 / 12 / 11 | 18 / 15 / 12 | 20 / 15.5 / 13 | |
| CFM | 530 / 424 / 388 | 635 / 530 / 424 | 706 / 547 / 459 | ||
| mmAq(in.Aq) | 6(0.24) | 6(0.24) | 6(0.24) | ||
| Drive | Direct | Direct | Direct | ||
| Motor Type | BLDC | BLDC | BLDC | ||
| Temperature Control | Microprocessor, Thermostat for
cooling and heating |
Microprocessor, Thermostat for
cooling and heating |
Microprocessor, Thermostat for
cooling and heating |
||
| Sound Absorbing Thermal Insulation Material | Foamed polystrene | Foamed polystrene | Foamed polystrene | ||
| Air Filter | Pre-filter | Pre-filter | Pre-filter | ||
| Safety Divice | Fuse | Fuse | Fuse | ||
|
Pipe Connections |
Liquid Side | mm(inch) | Φ6.35 (1/ 4) | Φ6.35 (1/ 4) | Φ9.52 (3/ 8) |
| Gas Side | mm(inch) | Φ12.7 (1/ 2) | Φ12.7 (1/ 2) | Φ15.88 (5/ 8) | |
| Drain Pipe(Internal Dia.) | mm(inch) | 25 (1) | 25 (1) | 25 (1) | |
| Net Weight | Body | kg(lbs) | 28.4(62.6) | 28.4(62.6) | 29.7(65.5) |
| Sound Pressure Level (H/ M/ L) | d B (A )+ 1 | 33 / 31 / 29 | 36 / 32 / 29 | 38 / 33 / 30 | |
| Power Supply | Ø, V, Hz | 1, 208 / 230, 60 | 1, 208 / 230, 60 | 1, 208 / 230, 60 | |
| Refrigerant Control | – | EEV | EEV | EEV | |
| Communication Cable(VCTF-SB) | AWG × cores | AWG 18 x 2C | AWG 18 x 2C | AWG 18 x 2C | |
Notes:-
- Capacities are based on the following conditions:
Cooling- Indoor temp. 27°C[80.6°F]DB/ 19°C[66.2°F]WB
- Outdoor temp. 35°C[95°F]DB/ 24°C[75.2°F]WB
- Interconnecting Piping Length 7.5m(24.6ft)
- Level Difference of Zero
Heating - Indoor temp. 20°C[68°F]DB/ 15°C[59°F]WB
- Outdoor temp. 7°C[44.6°F]DB/ 6°C[42.8°F]WB
- Interconnecting Piping Length 7.5m(24.6ft)
- Level Difference of Zero
- Capacities are net capacities
- Due to our policy of innovation some specifications may be changed without prior notification
- To be added for more available Models
- EEV : Electronic Expansion Valve
- Noise Level is High Mode (factory set)
Conversion Formula
- kcal/h= kW x 860
- Btu/h = kW x 3412
- cfm = m3/min x 35.3
- l/s = CMM x 1000/60
List of Functions
|
Category |
Function |
ARNU073MAA4, ARNU093MAA4, ARNU123MAA4 ARNU153MAA4, ARNU183MAA4, ARNU243MAA4 |
|
Air flow |
Air supply outlet | 1 |
| Airflow direction control(left & right) | – | |
| Airflow direction control(up & down) | – | |
| Auto swing(left & right) | – | |
| Auto swing(up & down) | – | |
| Airflow steps(fan/cool/heat) | 3/3/3 | |
| Chaos swing | – | |
| Chaos wind(auto wind) | – | |
| Jet cool(Power wind) | – | |
| Swirl wind | – | |
|
Air purifying |
Deodorizing filter | X |
| Plasma air purifier | X | |
| Prefilter(washable) | O | |
|
Installation |
Drain pump | O |
| E.S.P. control | O | |
| Electric heater(operation) | X | |
| High ceiling operation | – | |
| Vertical installation kit | ABDAMA0 | |
| Reliability | Hot start | O |
| Self diagnosis | O | |
|
Convenience |
Auto changeover | O (Heat recovery only) |
| Auto cleaning | O | |
| Auto operation(artificial intelligence) | O (Heat pump or cooling only) | |
| Auto restart operation | O | |
| Child lock | O | |
| Forced operation | – | |
| Group control | O | |
| Sleep mode | O | |
| Timer(on/off) | O | |
| Timer(weekly) | O | |
| Two thermistor control | O | |
| Individual control | LG Multi SITETM Remote Controller
(With Occupancy Sensor) |
PREMTBVC1 |
| LG Multi SITETM
Remote Controller |
PREMTBVC0 | |
| Premium | PREMTA000 | |
| Simple | PREMTC00U | |
| Wireless Remote Controller | PQWRHQ0FDB |
- O : Applied X : Not applied – : No relation
- Option : Model name & price are different according to options, and assembled in factory with main unit.
- Accessory : Installed at field, ordered and purchased separately by the corresponding model name, supplied with separate package.
Piping Diagrams
| CHASSIS | MODEL | GAS | LIQUID |
| MA | ARNU073MAA4 | Ø12.7(1/2) | Ø6.35(1/4) |
| ARNU093MAA4 | Ø12.7(1/2) | Ø6.35(1/4) | |
| ARNU123MAA4 | Ø12.7(1/2) | Ø6.35(1/4) | |
| ARNU153MAA4 | Ø12.7(1/2) | Ø6.35(1/4) | |
| ARNU183MAA4 | Ø12.7(1/2) | Ø6.35(1/4) | |
| ARNU243MAA4 | Ø15.88(5/8) | Ø9.52(3/8) |
| LOC. | Description | PCB Connector (Color) |
| Th1 | Thermistor for room air temperature | CN_ROOM (Yellow) |
| Th2 | Thermistor for pipe in temperature | CN_PIPE_IN (White) |
| Th3 | Thermistor for pipe out temperature | CN_PIPE_OUT (Red) |
Wiring Diagrams
ARNU073MAA4, ARNU093MAA4, ARNU123MAA4, ARNU153MAA4, ARNU183MAA4, ARNU243MAA4
DIP Switch Setting
Indoor Unit
| Function | Description | Setting Off | Setting On | Default | |
| SW1 | Communication | N/A (Default) | – | – | Off |
| SW2 | Cycle | N/A (Default) | – | – | Off |
| SW3 | Group Control | Selection of Master or Slave | Master | Slave | Off |
| SW4 | Dry Contact Mode | Selection of Dry Contact Mode | Wired/Wireless remote controller
Selection of Manual or Auto operation Mode |
Auto |
Off |
| SW5 | Installation | Fan continuous operation | Continuous operation Removall | – | Off |
| SW6 | Heater linkage | N/A | – | – | Off |
| SW7 | Ventilator linkage | Selection of Ventilator linkage | Linkage Removal | Working |
Off |
| Vane selection (Console) | Selection of up/down side Vane | Up side + Down side Vane | Up side Vane Only | ||
| Region selection | Selection tropical region | General model | Tropical model | ||
| SW8 | Etc. | Spare | – | – | Off |
For Multi V Models, DIP switch 1, 2, 6, 8 must be set OFF.
Outdoor Unit
In case that the products meet specific conditions, “Auto addressing” function can start automatically with the im-proved speed by turning the DIP switch #3 of the outdoor unit and resetting the power.
* Specific conditions:
- All names of the indoor units are ARNU****4.
- The serial number of Multi V super IV (outdoor units) is after October 2013.
Exploded View
Self-diagnosis function
Error Indicator
- This function indicates types of failure in self-diagnosis and occurrence of failure for air condition.
- Error mark is displayed on display window of indoor units and wired remote controller, and 7-segment LED of outdoor unit control board as shown in the table.
- If more than two troubles occur simultaneously, lower number of error code is first displayed.
- After error occurrence, if error is released, error LED is also released simultaneously.
Error Display
1st,2nd,3rd LED of 7-segment indicates error number, 4th LED indicates unit number. Indicates unit number.
(* = 1:Master, 2 : Slave 1, 3 : Slave 2)
- Ex) 211 : No.21 error of master unit
- 213 : No.21 error of slave2
- 1051 : No.105 error of master unit
Refer to the DX-Venitilation manual for DX-Venitilation error code
| Display | Title | Cause of Error | |||
| Indoor unit related error | 0 | 1 | – | Air temperature sensor of indoor unit | Air temperature sensor of indoor unit is open or short |
| 0 | 2 | – | Inlet pipe temperature sensor of indoor unit | Inlet pipe temperature sensor of indoor unit is open or short | |
|
0 |
3 |
– |
Communication error : wired remote controller indoor unit |
Failing to receive wired remote controller signal in indoor unit PCB |
|
| 0 | 4 | – | Drain pump | Malfunction of drain pump | |
|
0 |
5 |
– |
Communication error : Indoor communication PCB indoor unit | Indoor Unit PCB did not receive signal from Indoor communication PCB for over 3 minutes continuously | |
| 0 | 6 | – | Outlet pipe temperature sensor of indoor unit | Outlet pipe temperature sensor of indoor unit is open or short | |
|
0 |
9 |
– |
Indoor EEPROM Error | In case when the serial number marked on EEPROM of Indoor unit is 0 or FFFFFF | |
|
1 |
0 |
– |
Poor fan motor operation | Disconnecting the fan motor connector / Failure of indoor fan motor lock | |
| 2 | 3 | 0 | Refrigerant leakage sensing error | Refrigerant leakage sensing error and sensor defect error | |
|
2 |
3 |
7 |
Communication defect in indoor communication PCB outdoor communication PCB | Indoor communication PCB did not receive signal from outdoor communication PCB for over 3 minutes continuously | |
|
2 |
3 |
8 |
Communication error in outdoor communication PCB outdoor unit | Outdoor communication PCB did not receive communication sig- nal from outdoor unit for over 3 minutes continuously | |
Copyright © 2024 LG Electronics Inc. All rights reserved. Only training and service purposes.