LG BRNU76GB5W0 User manual

Multi V Air Conditioner
SVC MANUAL(Exploded View)
MODEL : BRNU76GB5W0
BRNU96GB5W0
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.
http://biz.lgservice.com

2Multi V Air Conditioner
1. Specification
Note:
1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 27°C(80.6°C) DB/19°C(66.2°C) WB
- Outdoor Temperature 35°C(95°C) DB/24°C(75.2°C) WB
Heating: - Indoor Temperature 20°C(68°C) DB/15°C(59°C) WB
- Outdoor Temperature 7°C(44.6°C) DB/6°C(42.8°C) WB
Piping Length - Interconnecting Piping Length 7.5m
- Level Difference of Zero
2. Wiring cable size must comply with the applicable local and national code.
3. The specification may be subject to change without prior notice for purpose of improvement.
Indoor
Indoor Unit Type
Model
Decorative Panel Model
Power Supply Ø / V / Hz
Cooling Capacity kW
Btu/h
Heating Capacity kW
Btu/h
Current Nominal Running Current A
Fan Motor Type
Fan Type
Motor Output(W) x No. of Unit
Air Flow Rate CMM
(H / M / L) cfm
External Static Pressure mmAq
Capacitor µF / Vac
Drive
Coil Row x Column x FPI
Dimensions Body mm(inch)
(W x H x D) Decorative Panel mm(inch)
Net Weight Body kg (lbs)
Decorative Panel kg (lbs)
Air Filter
Sound Level (H / M / L) dB(A)+3
Piping Liquid mm (inch)
Connections Gas mm (inch)
Drain(OD/ID) mm
Dehumidification Rate l/h
Safety Devices
Temperature Sensor
Referigerant
Referigerant Control
Connectable Outdoor Unit
Power and Transmission Interunit Cable No. x mm2
Ceiling Concealed Duct(High Static)
BRNU76GB5W0 BRNU96GB5W0
--
1/220~240/50, 60 1/220~240/50, 60
22.4 28
76,400 95,900
25.2 31.5
86,000 107,500
4.8 4.8
BLDC BLDC
Sirocco Sirocco
350*2 350*2
62/50/50 76/64/64
2189/1765/1765 2683/2259/2259
22 22
--
Direct Direct
3 x 21 x 19 3 x 21 x 19
1564*460*691 1564*460*691
--
110 110
--
--
53/49/49 53/49/49
9.52(3/8) 9.52(3/8)
19.05(3/4) 22.2(7/8)
21/17, (32/25) 21/17, (32/25)
--
FUSE FUSE
Thermistor Thermistor
R410A R410A
EEV EEV
Multi V Multi V
CV2.0*3C/CVV-SB1.25*2C CV2.0*3C/CVV-SB1.25*2C
Conversion Formula
kW = Btu/h x 0.0002931
cfm = CMM x 35.3

Service Manual 3
2. List of Functions
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 / anti-fungus) O
Installation Drain pump O
E.S.P. control O(only wired remote controller)
Electric heater(operation) X
High ceiling operation -
Reliability Hot start O
Self diagnosis O
Soft dry operation O
Convenience Auto changeover X
Auto cleaning X
Auto operation(artificial intelligence) O(only heat pump)
Auto restart operation O
Child lock O(only wired remote controller)
Forced operation -
Group control O(only wired remote controller)
Sleep mode X
Timer(on/off) O
Timer(weekly) O(only wired remote controller)
Two thermistor control O(only wired remote controller)
Individual control Standard wired remote controller PDRCUSZ0
Deluxe wired remote controller PQRCUDS0
Simple wired remote controller PQRCUCA0
Wired remote controller(for hotel use) PQRCFCS0
Wireless remote controller(simple) X
Wireless LCD remote control PQWRHSF0(H)/PQWRCSF0(C)
CAC network General central controller (Non LGAP) X
function Dry contact PQDSB
Network Soluation(LGAP) O
PDI(power distribution indicator) PQNUD1S00
PI 485 PMNFP14A0
Special function kit Zone control ABZCA
CTIE -
Electro thermostat -
Others Thermistor AQTTA
Category Function BRNU76GB5W0 / BRNU96GB5W0
Note:
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.

4Multi V Air Conditioner
3. Piping Diagrams
Indoor Unit
Th2
Th2
Th3 Th2
Filter
Check
Valve
Solenoid Valve
EEV
Th1
Heat Exchanger
: Cooling
: Heating
Filter
Sirocco Fan
LOC. Description PCB Connector
Th1 Thermistor for inlet air temperature CN_ROOM
Th2 Thermistor for EVA. in temperature CN_PIPE
Th3 Thermistor for EVA. out temperature CN_PIPE/O
Model Gas Liquid
BRNU76GB5W0 Ø19.05(3/4)
Ø9.52(3/8)
BRNU96GB5W0 Ø22.2(7/8)

Service Manual 5
4. Wiring Diagrams
OPTION
POWER INPUT
TO
OUTDOOR UNIT
3854A20989R
INDOOR DIAGRAM
CONNECTOR NUMBER
LOCATION POINT FUNCTION
CN-POWER AC POWER SUPPLY AC POWER LINE INPUT FOR INDOOR CONTROLLER
CN-MOTOR1 FAN MOTOR OUTPUT MOTOR OUTPUT OF BLDC
CN-D/PUMP DRAIN PUMP OUTPUT AC OUTPUT FOR DRAIN PUMP
CN-COMM COMMUNICATION CONNECTION BETWEEN INDOOR AND OUTDOOR
CN-EEV EEV OUTPUT EEV CONTROL OUTPUT
CN-FLOAT FLOAT SWITCH INPUT FLOAT SWITCH SENSING
CN-PIPE PIPE SENSOR PIPE THERMISTOR
CN-PIPE/O DISCHARGE PIPE SENSOR DISCHARGE PIPE THERMISTOR
CN-ROOM ROOM SENSOR ROOM THERMISTOR
CN-REMO REMOTE CONTROLLER REMOTE CONTROL LINE
CN-INFANSUB STARTING SIGNAL CONTROL STARTING SIGNAL CONTROL

6Multi V Air Conditioner
MAIN PCB
FAN PCB
OPTION PCB
CN-OPTION
CN-VM(IN)
CN-L CN-N
CN-MOTOR1(IN)
CN-MOTOR1
CN-MOTOR1(IN)
CN-MOTOR1
CN-FLOAT CN-EEV CN-LGMV CN-COM CN-D/PUMP CN-D/POWER
CN-REMO
CN-ROOM
CN-PIPE
CN-PIPE/O
CN-MOTOR2
CN-MOTOR1

149900
137214
W3001
W50011
354210
330870
237205-2
237205-1
158591
352118
55211G
346810
346810
359012
147910
359012
336600
336600
137213-2
268714-3
268714-2
268714-1
W0FZZ
249951
137213-1
349600-1
349600-1
349600-2
349600-2
263230-1
263230-2
263230-3
352150
Note)*PleaseensureGCSCsincethereplacementpartsmaybechangeddependinguponthebuyer'srequest.
PleasecheckthecorrectpartsinViewRPL(ReplacementPartList)onGCGS.
(GCGSWebsitehttp://biz.Lgservice.com)

P/NO : 3828A24006T AUGUST, 2007