Manuals / LG Electronics / Kitchen Appliance / Refrigerator

LG Electronics LRTN19310 Open Door Circuit Door Monitor Circuit, Freezer or Refrigerator, volts

Models: LRTN19310 LRTN22310

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2. Open Door Circuit (Door Monitor Circuit)

Freezer or Refrigerator	Measurement between pins 5 and 6 at Con 3

Both Closed	0 volts

One door open	5 volts

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LG Electronics LRTN19310, LRTN22310 Open Door Circuit Door Monitor Circuit, Freezer or Refrigerator, Both Closed, volts

Contents

models BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUALREFRIGERATOR LRTN19310** LRTN22310SAFETY PRECAUTIONS CONTENTSRef. No. 19Cuft / 22Cuft 1. SPECIFICATIONSFREEZER 2. PARTS IDENTIFICATIONCOMPARTMENT REFRIGERATOR3. DISASSEMBLY 3-2 DOOR SWITCH3-1 DOOR 3-3 FAN AND FAN MOTOR 3-4 DEFROST CONTROL ASSEMBLY3-5 LAMP 3-6 CONTROL BOX-REFRIGERATOR4. ADJUSTMENT 4-1 COMPRESSOR4-2 PTC-STARTER 4-4 TO REMOVE THE COVER PTC 4-3 OLP OVERLOAD PROTECTOR4-3-1 Definition of OLP 4-3-2 Role of the OLPGOOD MODEL 5. CIRCUIT DIAGRAM6-1 COMPRESSOR AND ELECTRIC COMPONENTS 6. TROUBLESHOOTINGObservation value is 115V/60Hz 6.8Ω±30% 6-2 PTC AND OLPShows continuity electric component6-3 OTHER ELECTRIC COMPONENTS Not cooling at allPoor cooling performance Not defrosting The system is faulty 6-4 SERVICE DIAGNOSIS CHARTCheck if frost forms in the freezer Check the refrigeration system Check the Thermistor6-5 REFRIGERATING CYCLE Replace drier whenever repairing General Control of Refrigerating Cycleafter welding to protect pipe from cracking heater ON POWERCOMP POWERDefect code panel 7-1-4 Defect Diagnosis FunctionERROR CODE on Refrigerator Temperature panel Reset CONTENTS7-1-5 TEST Mode MODE7-2-1 Power Circuit 7-2 PCB FUNCTION1. Load Drive Condition Check 7-2-2 Load / Buzzer Drive & Open Door Detection Circuit2. Open Door Circuit Door Monitor Circuit Measurement between pins 5 and 6 at ConFreezer or Refrigerator Both Closed7-2-3 Temperature Sensor Circuit TEMPERATURE 7-3 RESISTANCE SPECIFICATION OF SENSORRESISTANCE OF FREEZER RESISTANCE OF REFRIGERATORSOLUTION SYMPTOMTROUBLESHOOTING COMPLAINT7-5-1 Main PWB Assembly 7-5 MAIN PWB ASSEMBLY AND PARTS LISTCASE PARTS 8. EXPLODED VIEW & REPLACEMENT PARTS LIST330B S21 284A FREEZER PARTS110D S22 284C 332A 405C 405A 404A 329A S20REFRIGERATOR PARTS 141B 141A 141A 141C 141B 170A 141C 141B 128A141A 128B 141C 141B141A 141C 141B 167B 141A 141C 154A 151A 155B 151A 151C 281D DOOR PARTSP/No. 3828JL8015A

2. Open Door Circuit (Door Monitor Circuit)

Freezer or Refrigerator

Measurement between pins 5 and 6 at Con 3

Both Closed

0 volts

One door open

5 volts