LG LB-E608HL User manual

SERVICE MANUAL

LG LB-E608HL

MODEL

P/No.: 3828A30014U August, 1999

Printed in Korea

Functions

ƒURoom temperature sensor. (Thermistor)

ƒUMaintains the room temperature in accordance with the Setting Temp.

ƒUIndoor fan is delayed for 5 seconds at the starting.

ƒURestarting is inhibited for approx. 3 minutes.

ƒUHigh, Med, Low

ƒUIntermittent operation of fan at low speed.

ƒUThe setting temperature, indoor fan speed and desired operation mode are automatically set.

ƒUBoth the indoor and outdoor fan stops during defrosting.

ƒUHot start after defrost ends.

ƒUThe indoor fan stops until the evaporator piping temperature will be reached at 28°C.

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

Soft Dry Operation Mode

Deice (defrost) control (Heating)

Hot-start Control (Heating)

Auto Operation

–3–

–4–

Remote Controller

Operation ON/OFF

Operation Mode Selection

Fan Speed Selection

Room Temperature Display

Temperature Setting

Setting the Time or Timer

(Cooling

model only) (Heating

model only)

(Low) (Med) (High)

Cooling Operation Mode ( )

Heating Operation Mode ( ) Soft Dry Operation Mode ( )

Fan Operation Mode

HIMEDLO

Set

: High:39°C ¡ŒLOW:11°C

: Fan Operates without cooling & heating

Cooling Heating

Down to 18°C

Up to 30°C,Down to 16°C

Up to 30°C,

When the air conditioner is turned off by a power failure, it is restarted

automatically after a power resupply.

✓

Product Specifications (Cooling & Heating)

Air Circulation m3/min

Dimensions

(W¡¿H¡¿D)

Net. Weight

LB-E6080HL

380-415V

–5–

Service Valve &

Connecting Tube

Model Name

Volt

Item Unit

Cooling Capacity Btu/h(W)

Heating Capacity Btu/h(W)

Moisture Removal §⁄/h

Power Source §j, V, Hz

Indoor

Outdoor

Input Cooling

Heating

Running Current Cooling

Heating

E.E.R. Btu/h-W

Indoor

Outdoor

Indoor

Outdoor

Refrigerant (R-22) g

Remocon Type

Liquid

Gas

Drain Hose

Connecting Wire

Main Power Cable

Time Delay Safety Function

Soft Dry

Fan Speed (Indoor)

Timer

Self-Diagnosis

57,000 (16,700)

60,000 (17,580)

7.5

3ø,380-415V~, 50Hz

105

7,500

6,000

8.2

1,230 x 370 x 680

900 x 1,220 x 370

4,500

L.C.D

1/2" (12.7)

3/4" (19.05)

1.25mm2¤C

3.5mm2¤C

3 (Hi, Med, Low)

24Hrs

Dimensions

MODEL:LB-E6080HL

Indoor Unit

900

1220

370

1230 680

370

–6–

Outdoor Unit

Refrigeration Cycle Diagram

• MODEL: LB-E6080HL

(§Rated performance for refrigerant line length of: 5m)

For installation over rated distance, 70g of refrigerant should be added for each meter.

ex) When installed at a distance of 15m, 525g of refrigerant should be added.

(15-7.5) x 70g = 525g

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

MODEL Gas Liquid Rated Max. Rated Max.

LB-E6080HL 3/4" 1/2" 5 30 5 30 70

INDOOR UNIT OUTDOOR UNIT

HEAT

EXCHANGER HEAT

EXCHANGER

COMPRESSOR

GAS SIDE

LIQUID SIDE

COOLING

HEATING

REVERSING

VALVE

CHECK VALVE

CAPILLARY TUBE

–7–

Additional

refrigerant

(g/m)

Wiring Diagram

MODEL: LB-E6080HL

• Indoor Unit

• Outdoor Unit

–8–

FMi

TRANS

GN/YLGN/YL

CN-TRANS2

PWB ASM

CN-POWER

CN-TRANS1

Hi Med Low

CN-MOTOR

RY-FAN

RY-4WAY

RY-COMP

CN-OUT

DC-12V

SIGNAL

GND

Remo.

CN-REMO

INDOOR ELECTRIC CIRCUIT

INDOOR UNITOUTDOOR UNIT

(RD)

(YL)

(BR)

P/NO : 3854A90021K

COi

GN/YL

CN-TH

EVA

TH ROOM

TH1

RTM

3ﬂ, 380-415V, 50Hz

POWER SUPPLY

S T N

BK BK BK

63H2

D.P C TH

TNS NO NC

BK 52F1

52C 1

T/B1

T/B2

FMo

49FMo FMo

49FMo

YL BK

T3 T2 T1

1 2

3 4

5 6

7 8

YL BK

Co Co

20SV

–9–

Operation Details

(1) The function of main control

1. Time Delay safety Control

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

(Protection of compressor)

• 30sec¡ƒThe 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. Soft-Dry Operation

• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of

already being set to the best speed for Dry Operation by Micom Control.

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

Intake Air temp.

Setting temp.+3°C

(Compressor OFF)

Setting temp.

(Compressor ON)

INDOOR FAN Low OFF Low Low OFF

COMPRESSOR ON OFF ON OFF

ƒUA point; While the indoor Heat-Exchanger temperature is higher than 35°C fan operates at low speed, when

it becomes lower than 35˚C fan stops.

ƒUB point; When the indoor Heat-Exchanger temperature is higher than 35°C, fan operates at seleted fan

speed, when it becomes lower than 35°C, the fan operates at low speed for 10sec, after 10sec, it

operates at seleted fan speed.

–10–

4. Heating Mode Operation (Except Cooling Model)

The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.

Hot Start

Low

Selecting

Fan Speed

minimum 3min

Selecting fan

speed

minimum

10sec.

1min

A A

minimum

1min. minimum

10sec.

5. Hot-Start Control

ƒU The indoor fan stops until the evaporator piping temperature will be reached to 28°C.

ƒUThe operation diagram is as following.

PIPING

TEMPERATURE 1min

COMPRESSOR

INDOOR FAN

26°C

: Selected Fan : Low Fan : Fan Stop

28°C

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