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Refrigerator
LG Electronics
service manual models, Refrigerator, LRTN19310** LRTN22310
Models:
LRTN19310
LRTN22310
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Troubleshooting
Specs
Parts list
Error messages
Circuit Diagram
Replace drier whenever repairing
Symptom
Disassembly
Not defrosting The system is faulty
Adjustment
Page 1
Image 1
REFRIGERATOR
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
models
LRTN19310
**
LRTN22310
**
Page 2
Page 1
Image 1
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Contents
models
BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL
REFRIGERATOR
LRTN19310** LRTN22310
SAFETY PRECAUTIONS
CONTENTS
Ref. No. 19Cuft / 22Cuft
1. SPECIFICATIONS
FREEZER
2. PARTS IDENTIFICATION
COMPARTMENT
REFRIGERATOR
3-2 DOOR SWITCH
3. DISASSEMBLY
3-1 DOOR
3-3 FAN AND FAN MOTOR
3-4 DEFROST CONTROL ASSEMBLY
3-5 LAMP
3-6 CONTROL BOX-REFRIGERATOR
4-1 COMPRESSOR
4. ADJUSTMENT
4-2 PTC-STARTER
4-4 TO REMOVE THE COVER PTC
4-3 OLP OVERLOAD PROTECTOR
4-3-1 Definition of OLP
4-3-2 Role of the OLP
GOOD MODEL
5. CIRCUIT DIAGRAM
6-1 COMPRESSOR AND ELECTRIC COMPONENTS
6. TROUBLESHOOTING
Observation value is 115V/60Hz 6.8Ω±30%
6-2 PTC AND OLP
Shows continuity
electric component
Not cooling at all
6-3 OTHER ELECTRIC COMPONENTS
Poor cooling performance
Not defrosting The system is faulty
6-4 SERVICE DIAGNOSIS CHART
Check if frost forms in the freezer Check the refrigeration system
Check the Thermistor
6-5 REFRIGERATING CYCLE
General Control of Refrigerating Cycle
Replace drier whenever repairing
after welding to protect pipe from cracking
heater ON
POWER
COMP
POWER
Defect code panel
ERROR CODE on Refrigerator Temperature panel
7-1-4 Defect Diagnosis Function
Reset
CONTENTS
7-1-5 TEST Mode
MODE
7-2-1 Power Circuit
7-2 PCB FUNCTION
1. Load Drive Condition Check
7-2-2 Load / Buzzer Drive & Open Door Detection Circuit
2. Open Door Circuit Door Monitor Circuit
Measurement between pins 5 and 6 at Con
Freezer or Refrigerator
Both Closed
7-2-3 Temperature Sensor Circuit
TEMPERATURE
7-3 RESISTANCE SPECIFICATION OF SENSOR
RESISTANCE OF FREEZER
RESISTANCE OF REFRIGERATOR
SOLUTION
SYMPTOM
TROUBLESHOOTING
COMPLAINT
7-5-1 Main PWB Assembly
7-5 MAIN PWB ASSEMBLY AND PARTS LIST
CASE PARTS
8. EXPLODED VIEW & REPLACEMENT PARTS LIST
330B S21 284A
FREEZER PARTS
110D S22 284C
332A 405C 405A 404A 329A S20
141B 141A 141A 141C 141B 170A 141C 141B 128A141A 128B 141C 141B
REFRIGERATOR PARTS
141A 141C 141B 167B 141A 141C 154A 151A 155B 151A 151C
281D
DOOR PARTS
P/No. 3828JL8015A
