LG LV-B3620CL User manual

Room Air Conditioner

(Convertible Type)

SERVICE MANUAL

MODEL: LV-B3620CL

Библиотека СОК 

Contents

Functions.................................................................................................................................3

Product Specifications ...........................................................................................................5

Dimensions..............................................................................................................................6

Refrigeration Cycle Diagram..................................................................................................8

Wiring Diagram........................................................................................................................9

Operation Details ..................................................................................................................10

Display Function ...................................................................................................................15

Self-diagnosis Function........................................................................................................15

Installation .............................................................................................................................16

Operation ...............................................................................................................................33

Disassembly of the parts (Indoor Unit)...............................................................................34

2-way, 3-way Valve.................................................................................................................38

Cycle Troubleshooting Guide...............................................................................................44

Electronic Parts Troubleshooting Guide.............................................................................45

Electronic control device......................................................................................................49

Schematic Diagram...............................................................................................................50

Exploded View and Replacement Parts List.......................................................................51

–2–

Functions

• Room temperature sensor. (Thermistor)

• Maintains the room temperature in accordance with the Setting Temp.

• Indoor fan is delayed for 5 seconds at the starting.

• Restarting is inhibited for approx. 3 minutes.

• High, Med, Low, Chaos

--- Lights up in operation

--- Lights up in Sleep Mode

--- Lights up in Timer Mode

--- Lights up during compressor running

(only Cooling Model)

• Intermittent operation of fan at low speed.

• The fan is switched to low(Cooling), med(Heating) speed.

• The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.

• The fan is switched to intermittent or irregular operation

• The fan speed is automatically switched from high to

low speed.

• The louver can be set at the desired position or swing

up and down, right and left (not on all models) automatically.

• The setting temperature, indoor fan speed and desired

operation made are automatically set by fuzzy rule.

Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

Room temperature control

Starting Current Control

Time Delay Safety Control

Indoor Fan Speed Control

Operation indication Lamps (LED)

Soft Dry Operation Mode

Sleep Mode Auto Control

Natural Air Control by CHAOS Logic

Airflow Direction Control

Auto Operation

–3–

–4–

Soft Dry Operation Mode.( )

Remote Controller

Operation ON/OFF

Reset

Operation Mode Selection

Fan Speed Selection

Room Temperature Display

Temperature Setting

Setting the Time or Timer

Timer Selection

Timer Setting

Timer Cancel

Sleep Operation

Airflow Direction Control

TEMPERATURE LOW HIGH

(Low) (Med) (High) (CHAOS)

Cooling Operation Mode.( ) Auto Operation Mode.( )

Fan Operation Mode

ON OFF

SET

CANCEL

: High:39°CLOW:11°C

: OFF, ON, OFF ON

: Cancel Sleep Mode, Timer ON or Timer OFF.

: 1, 2, 3, 4, 5, 6, 7hr, Off Timer

: Fan Operates without cooling.

Cooling Down to 18°C

Up to 30°C

Product Specifications (Cooling Only)

Model Name

Item Unit

Cooling Capacity Btu/h(kcal/h) 36,000(9,072)

Moisture Removal l/h 5.0

Power Source

, V, Hz

1ø220, 60Hz

Indoor 20

Outdoor 58

Input W 3,900

Running Current A 18

E.E.R. Btu/h-W 9.23

Indoor 1,200 x 205 x 615

Outdoor 790 x 965 x 320

Indoor 32

Outdoor 80

Refrigerant (R-22) g 3,150

Airflow Direction Control (Up & Down) O

Remocon Type L.C.D Wireless

Liquid 3/8" (9.52)

Gas 3/4" (19.05)

Sleeping Operation O

Drain Hose O

Connecting Wire 0.75mm2

Main Power Cable 3.5mm2

Time Delay Safety Function O

Air Circulation O

Soft Dry O

Fan Speed (Indoor) 3 (Hi, Med, Low)

Timer 24Hrs

Self-Diagnosis O

Auto-Restart O

Air Circulation m3/min

Dimensions

(W H D)

Net. Weight

LV-B3620CL

–5–

Service Valve &

Connecting Tube

Dimensions

(1) Indoor Unit

250mm

36mm

36mm 1076mm

1200mm

205mm

615mm

392mm

265mm

468mm

63mm

38mm

175mm

(Installation Plate)

(Rear Side)

–6–

(2) Outdoor Unit

320

790

385 72

482 4-ø12Hole

249

145 500 145

10 334

354

265

440

925

965

130

292.5

(Air intake vent)

–7–

Refrigeration Cycle Diagram

Pipe size(Diameter: ) Piping length(m) Elevation(m)

MODEL Gas Liquid Rated Max Rated Max

LV-B3620CL 3/4" 3/8" 5 20 5 10

INDOOR UNIT OUTDOOR UNIT

HEAT

EXCHANGER

(EVAPORATOR)

HEAT

EXCHANGER

(CONDENSER)

COMPRESSOR

GAS SIDE

LIQUID SIDE

CAPILLARY TUBE

–8–

For installation over rated distance, 50g of refrigerant should be added for each meter.

ex) When installed at a distance of 15m, 500g of refrigerant should be added.

(15-5) x 50g = 500g

Wiring Diagram

(1) Indoor Unit

–9–

DISPLAY PCB

ASSY.

MAIN PCB

ASSY.

TRANS-

FORMER THERMISTOR

CN-TH

CN-TRANS

CN-FAN

RY-L

MOTOR

CAPACITOR

BR YL

GN/YL

FUSE

T3.15A

STEP

MOTOR

RY-COMP

CN-4WAY

CN-UP/DOWN 1,2

CN-DISP

DOOR S/W 1,2

RY-M

RY-H

TERMINAL

BLOCK

(L)

(N)

STEP

MOTOR

4123 65

3854A20039L

(OUTDOOR)

Outdoor Unit Wiring Diagram

NOTE

BL : BLUE

BK : BLACK

BR : BROWN

OR : ORANGE GN/YL : GREEN/YELLOW

52C

TMo

MAGNETIC CONTACTOR

TERMINAL BLOCK

RUN CAPACITOR FOR FMo

MAIN TERMINAL BLOCK

COMPRESSOR

RUN CAPACITOR FOR CM

FMo

FUSE (250V, 5A)

OUTDOOR FAN MOTOR

P/NO : 3854A30042T

RD : RED

WH :WHITE

YL :YELLOW WIRING OF FIELD

(CONNECTING WIRE)

POWER SUPPLY

52C

BL BK

GN/YL

2(N)

1(L)

OR YL

BK OR YL

FMo1FMo2

THMO

GN/YL

TO INDOOR

543

(

)

(

)

(2) Outdoor Unit

3. Cooling Mode Operation

•When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote con-

troller and the operation diagram is as following

Intake Air temp.

COMP. ON

(SET TEMP.+0.5°C)

COMP. OFF

(SET TEMP. -0.5°C) More than More than

3 minutes 3 minutes

Selecting Selecting Selecting

fan speed fan speed fan speed

COMPRESSOR ON OFF ON OFF ON

INDOOR FAN Low Low

Operation Details

(1) The function of main control

1. Time Delay Safety Control

•3min…The compressor is ceased for 3minutes to balance the pressure in the refrigeration cycle.

(Protection of compressor)

•5sec…

Vertical air flow direction control louvers open in 5 seconds to prevent noise between louvers and wind.

•30sec…The 4-way valve is ceased for 30sec. to prevent the refrigerant-gas abnormal noise when the Heating

operation is OFF or switched to the other operation mode while compress is off.

While compressor is running, it takes 3~5 seconds to switch.

2. Airflow Direction Control

•This function is to swing the louver up and down automatically and to set it at the desired position.

•The procedure is as the following.

1st ; Press the ON/OFF Button to operate the product.

2nd ; Press the Airflow Direction Control Button to swing the louver up and down automatically.

3nd ; Repress the Airflow Direction Control Button to set the louver as the desired position.

MODE0

135°

Cooling

MODE

MODE 9

MODE

(CLOSE)

–10–

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