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COMPREHENSIVE APPLICATION AND INSTALLATION MANUAL

LG Electronics

Installation check listConguration

System Design ApplicationsIntroduction

2.3 LG MV

Heating Mode

Mode Item Unit

R32

Cause & Check Point

Normal

Condition

Abnormal

Condition

Heating

Operation

High Pres

sure

kPa 2300~4000

Above

4100

Overcharging, Heat exchanger fault,

Water ow rate shortage, Check that

the water inlet temperature is within the

operation range.

(△T=5 °C @ Water outlet temp.35

°C/45 °C,

△T=8 °C @ Water outlet temp.55 °C)

Below

2200

Ref. shortage, Over water ow rate,

Check that the water inlet temperature

is within the operation range.

(△T=5°C @Water outlet temp.35

°C/45 °C,

△T=8°C @ Water outlet temp.55 °C)

Low Pres

sure

kPa 200~1200

Above

1300

Overcharging, Check that the outdoor

air temperature is within the operating

range.

Below

200

Ref. shortage, Outdoor Unit Fan lock,

Poor airow in outdoor unit heat-

exchanger, Check that the outdoor air

temperature is within the operating

range.

Indoor

Water dT

(Water out

- Water in)

°C -

Below

1 °C

Ref. shortage, Over water ow rate,

Check that the water inlet temperature

is within the operation range.

(△T=5 °C @ Water outlet temp.35

°C/45 °C,

△T=8 °C @ Water outlet temp.55 °C)

Outdoor

Ref.

Discharge

Temp.

°C -

Above

95 °C

Ref. Shortage, EEV clogging, Pipe

clogging

Outdoor

Discharge

Superheat

°C -

Below

5 °C

Overcharging, EEV malfunction(Full

open)

Cooling Mode

Mode Item Unit

R32

Cause & Check Point

Normal

Condition

Abnormal

Condition

Cooling

Operation

High Pressure kPa 1800~3600

Above

3800

Overcharging, Outdoor Unit Fan lock,

Poor airow in outdoor unit heat-exchang

er, Check that the outdoor air temperature

is within the operating range.

Below

1600

Ref. Leakage or Ref. Shortage, Check

that the outdoor air temperature is within

the operating range.

Low Pressure kPa 600~1000

Above

1300

Overcharging, Over Water ow rate,

Check that the water inlet temperature is

within the operation range.

(△T=5 °C @ Water outlet temp.35 °C/45 °C,

△T=8 °C @ Water outlet temp.55 °C)

Below

500

Ref. Shortage, Water ow rate shortage,

Check that the water inlet temperature is

within the operation range.

(△T=5 °C @ Water outlet temp.35 °C/45 °C,

△T=8 °C @ Water outlet temp.55 °C)

Indoor Ref.

dT (Pipe in –

Pipe out)

°C 0~10 °C

Above

12 °C

Ref. Shortage, EEV clogging, Pipe

clogging

Indoor Water

dT (Water out

– Water in)

°C -

Below

1 °C

Ref. Shortage, Over water ow rate,

Check that the water inlet

temperature is within the operation range.

(△T=5 °C @ Water outlet temp.35 °C/45 °C,

△

T=8 °C @ Water outlet temp.55 °C)

Outdoor Ref.

Discharge

Temp.

°C -

Above

95 °C

Ref. Shortage, EEV clogging, Pipe

clogging

Outdoor

Discharge

Superheat

°C -

Below

5 °C

Overcharging, EEV malfunction(Full

open)

Questions and Answers:

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LG THERMA V Split Specifications

General

Refrigerant	R32
Energy Efficiency	A+++
Power Supply	220-240V, 50Hz
Sound Power Level	Varies by model
Noise Level (Outdoor)	45 dB - 55 dB
Indoor Unit Dimensions (WxHxD)	Varies by model
Outdoor Unit Dimensions (WxHxD)	Varies by model
Indoor Unit Weight	Varies by model
Outdoor Unit Weight	Varies by model
Air Flow (Indoor)	Varies by model