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Troubleshooting guide, Piping system, Room air conditioner – LG LT1230HR User Manual

Page 25: Service manual 25 troubleshooting guide

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Service Manual 25

Troubleshooting Guide

Troubleshooting Guide

Piping System

Following is a brief description of the important components and their functions in the refrigeration system.
Refer to Fig. 41 to follow the refrigeration cycle and the flow of the refrigerant in the cooling cycle.

MOTOR

COMPRESSOR

OIL

(LIQUID REFRIGERANT)

CAPILLARY TUBE

OUTSIDE COOLING
AIR FOR REFRIGERANT
PASS THROUGH

SUCTION LIME
COOL LOW PRESSURE VAPOR

COOLED
AIR

COMPLETE LIQUID
BOIL OFF POINT

LIQUID
PRESSURE
DROP

ROOM AIR HEAT LOAD

VAPOR INLET

HOT
DISCHARGED
AIR

LIQUID OUTLET

HIGH PRESSURE VAPOR

LIQUID PEFRIGERANT

LOW PRESSURE VAPOR

ROOM AIR CONDITIONER

EVAPORATOR COILS

CONDENSER COILS

CYCLE OF REFRIGERATION

CONDENSER COILS

EVAPORATOR COILS

FAN

MOTOR

: REFRIGERANT FLOW

TURBO FAN

CAPILLARY TUBE

COMPRESSOR

FIG. 41