DOWNLOAD LG LP-C508T / LP-H508T / LP-Z508T Service Manual ↓ Size: 7.84 MB | Pages: 127 in PDF or view online for FREE

This function is to set the time of stopping the unit operation.

The procedure is as the following.

1st: Press the timer set button on the Remocon.

2nd: The buzzer sounds and then the display window shows the Off-Time to be set as 1:00

...

7:00 

0:00.

- The Off-Time is shifted as the following by each press.

- If you select '0:00', the Off-Timer function will be cancelled.
- During Off-Timer Operation, if you repress the timer set button, the rest time will be displayed.

CH 0 

: The sensor for sensing room temperature is open or short.

CH 1 

: The sensor for sensing piping temperature of evaporator is open or short.

This function shall be operated while the set not operating and start while set temperature set button(

▼

) down

and start/stop buttons pressing continuously for 3 seconds.
If you press start/stop button continuously for 3 seconds while set temp down button pressing once more test
operation and the set shall be stopped.
After test operation operating and 18 minutes, test operation and the set shall be stopped.
If you press start/stop button while test operation operating, test operation shall be stopped and the set shall
start.

When test operation operating, the display of 

88:88

shall be shifted to tESt 

4-way valve is always off when test operation.
Fan speed is high, air purifying system and auto air flow operations are off when test operation.
Regardless of outside temperature, the set operates when test operation.
All but start/stop and air purifying system buttons cannot be set.

Heating operation is set to the previous set temperature when re-operation after stop. Cooling operation is set
to the previous set temperature when re-operation with start/stop button.

1.Operation mode.

Cooling/soft dry mode 

→

Cooling mode

Heating mode 

→

Heating mode

2. Setting the set temperature when cooling operation.

Room temperature > Set temperature: to be set to the previous set temperature.
Room temperature  

≤

Set temperature

a) Room temperature 

≥

26°C: to be set to 24°C

b) 22°C 

≤

Room temperature 

≤

25°C: to be set to 21°C

c) Room temperature 

≤

21°C:to be set to -1°C less than room temperature.

3. Setting the set temperature when heating operation.

Set the previous set temperature when stopped.

In case the power comes on again a power failure, Auto Restarting Operation is the function to operate proce-
dures automatically to the previous operating conditions.

1:00

2:00

3:00

4:00

5:00

6:00

7:00

0:00

• There should not be any heat source or steam near

the unit.

• There should not be any obstacles to prevent the air

circulation.

• The place where air circulation in the room will be

good.

• The place where drainage can be easily obtained.
• The place where noise prevention is taken into con-

sideration.

• Do not install the unit near the door way.
• Ensure the space indicated by arrows from the wall,

ceiling, fence, or the obstacles.

• If an awning is built over the unit to prevent direct

sunlight or rain exposure, be careful that heat radia-
tion from the condenser is not restricted.

• There should not be any animals or plants which

could be affected by discharged hot air.

• Ensure the space indicated by arrows from the wall,

ceiling, fence, or other obstacles.

MODEL

MAX. Piping length

A (m)

5HP

30

25

MAX. 

elevation

B (m)

A

B

Indoor unit

Outdoor unit

Wall

More
than
50cm

More than
50cm

More than
50cm

More than
100cm

Outdoor
unit

5cm 

5cm 

40cm 

100cm 

Indoor unit

The mounting floor should be strong and solid
enough to prevent it from vibration.
Drill the piping hole with 70mm diameter hole-core
drill at either the right or the left of indoor unit. The
hole should be sightly slant to the outdoor side.

Insert the plastic tube through the hole.

Cut the extruded outside part of the plastic tube, if
necessary.

Install the outdoor unit on the concrete or any solid
base securely and horizontally by securing it with
bolts (Ø12mm) and nuts.
If there is any vibration transmitted to the building,
mount the rubber underneath the outdoor unit.

Before shipment, this air conditioner is filled with the
rated amount of refrigerant including additional
amount required for air-purging, subject to 5m piping
length. (The rated amount of refrigerant is indicated
on the name plate.) But when the piping length
exceeds 5 meters, additional charge is required
according to the following table.

(Unit: g)

Example)  In case of 10m long pipe(one-way), the

amount of refrigerant to be replenished is:
(10 – 5) 

×

50 = 250g

Wall

Core Drill

Tilt 

Cut if necessary

More than 15mm

Wall

Plastic tube
(Bushing)

INSIDE

OUTSIDE

200mm

70mm

70mm

89mm

REFRIGERANT CHARGE

50g per 1 m

MODEL

5HP

1

Preparation of tools and installation parts

Preparation of installation

2

Flaring the pipes

To insert the flare nuts, mounted on the connection 
parts of both indoor and outdoor unit, onto the 
copper pipes.

3

Pipe bending

To reduce the flow resistance of refrigerant.

4

Connection of installation parts

Connection of long piping

(elbows, socket etc)

5

Tighten the flare nut (outdoor) 

Connecting the pipings of the outdoor unit.

6

Blowing the pipings

To remove dust and scale in working.

7

Tighten the flare nut (indoor)

Connecting the pipings of the indoor unit.

8

Check the gas-leakage of the connecting 
part of the pipings.

9

Air purging of the piping and indoor unit

The air which contains moisture and which
remains in the refrigeration cycle may cause malfunction 
on the compressor

10

Open the 3-way (liquid side) and 
3-way (gas side) valves.

11

Form the pipings

To prevent heat loss and sweat

12

Checking the drainage (indoor unit) 

To ensure if water flows drain hose of indoor unit.

13

Connecting the cable between outdoor and 

Preparation of the operating

indoor unit 

14

Connecting the main cable to outdoor unit

15

Supply the power to the crankcase heater

To prevent the liquid back to the compressor. 

(before the operating the unit)

(Heat pump only)

16

Cooling operation, Heating operation

To confirm the operation of the unit.

(Use the remote controller or display of the indoor unit)