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R
REFRIGERATOR
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Model #s:
795.77562600
795.77569600
795.77564600
795.77563600
795.77572600
795.77579600
795.77573600
P/No. 3828JL8091A (Last Revision: March. 28. 2008)
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CONTENTS Safety Precautions 1. Specification ......................................................................................................................................................................... 2. Parts Identification ............................................................................................................................................................... 3. Operation ........................................................................................
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1. SPECIFICATIONS 1-1 DISCONNECT POWER CORD BEFORE 1-7 REPLACEMENT PARTS SERVICING Relay..............................................................6748C-0004D IMPORTANT – RECONNECT ALL Overload ........................................................6750C-0004R GROUNDING DEVICES Defrost Thermostat........................................6615JB2005H Defrost Heater ...............................................5300JK1005D All parts of this appliance capable of conducting electrical Evaporator
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2. PARTS IDENTIFICATION P F B O A Q C N C M H D G E L J K I Refrigerator Light I Tilt-Out Door Basket A Ice Bank B Filter (Inside) J Durabase Ice Door C Modular Door Bins K Divider D L Refrigerator Shelves Ice Bin E M Supra Fresh Crisper with Water Tank Cover Tilt-Out Compartment N Snack Pan F Ice Room O Egg Box (ICEMAKER and ICE BIN) P Dairy Bin G Pull out Drawer Q Bottle Holder H Turbo Motor - 4 -
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3. OPERATION 3-1. Explanation Of Each Function 1. Function (1) When the appliance is plugged in, it is set to 37 °F for the refrigerator and 0 °F for the freezer. You can adjust the refrigerator and the freezer control temperature by pressing the ADJUST button. (2) When the power is initially applied or restored after a power failure, maintains its previously set temperature. Ultra lce Refrigerator Filter Reset . 2 How to Toggle the Display between °F and °C (1) The initial setting is °F and th
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5. Ice Plus Selection Please select this function for quick freezing. (1) The ICE PLUS option starts counting its 24-hours period every time the button is pressed. (2) The ICE PLUS function automatically turns off after twenty-four hours pass. 6. Dispenser Use Selection You can select water or ice. Pressing * Select water, crushed ice, or ice cubes by cycling through the Switch selections when pressing the DISPENSER button, * Hold your cup in the dispenser for a few seconds after dispensing ice
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11. Ice Plus (1) The purpose of this function is to intensify the cooling speed of freezer and to increase the amount of ice. (2) Whenever selection switch is pressed, selection/release, the LED will turn ON or OFF. (3) If there is a power outage and the refrigerator is powered on again, Ice Plus will be canceled. (4) To activate this function, press the Ice Plus key and the LED will turn ON. This function will remain activated for 24 hours. The first three hours the compressor and Freezer Fan
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14. Defrosting (removing frost) (1) Defrosting starts each time the COMPRESSOR running time reaches 7 hours. (2) For initial power on or for restoring power, defrosting starts when the compressor running time reaches 4 hours. (3) Defrosting stops if the sensor temperature reaches 46.4°F (8°C) or more. If the sensor doesn’t reach 46.4°F (8°C) in 2 hours, the defrost mode is malfunctioning. (Refer to the defect diagnosis function, 15.) (4) Defrosting won’t function if its sensor is defective (wi
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3-2. Ice Maker Function 1. Operation Principle of icemaker Power On Start Position • Adjusts EJECTOR to Start Position with power on. Icemaking • Waits until water becomes ICE after starting the Mode icemaking operation. Harvest • Runs MOTOR to drop ice from the tray into the ICE BIN. Mode (During harvest mode, check if the ice bin is full.) Park Position • Reaches Start Position Fill • Performs Ice Making Mode after supplying water by operating the SOLENOID in ICE VALVE. • To operate LIN
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2. Icemaking Mode (1) Icemaking refers to the freezing of supplied water in the ice tray. Complete freezing is assured by measuring the temperature of the tray with Icemaking SENSOR. (2) Icemaking starts after completion of the water fill operation. (3) The icemaking function is completed when the sensor reaches 1 9 °ΔF (-7 °ΔC), 55 minutes after starting. NOTE : After the icemaker power is ON, the icemaker heater will be on for test for 6 seconds. 3. Harvest Mode (1) Harvest (Ice removing) refe
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5. Function TEST (1) This is a forced operation for test, service, cleaning, etc. It is operated by pressing and holding the cube size button for 3 seconds. (2) The test works only in the Icemaking Mode. It cannot be entered from the Harvest or Fill mode. (3) Caution! Caution! Caution! Caution! If the test is performed before water in the icemaker is frozen, the ejector will pass through the water. When the fill mode begins (Stage 4), unless the water supply has been shut off, added water will
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4. WIRING DIAGRAM - 12 -
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5. ADJUSTMENT 5-1. Compressor 1. Role The compressor intakes low temperature and low pressure gas from the evaporator of the refrigerator and compresses this gas to high-temperature and high-pressure gas. It then delivers the gas to the condenser. 2. Composition The compressor includes overload protection. The PTC starter and OLP (overload protector) are attached to the outside of the compressor. Since the compressor is manufactured to tolerances of 1 micron and is hermetically sealed in a dust
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4. diagnosis YES (Rated Voltage Remove PTC-Starter Power Source. 1 2 ±10%)? from Compressor and measure voltage between Terminal C of Compressor and Terminal 5 or 6 of PTC. YES OLP disconnected? No Voltage. Replace OLP. 5 NO Check connection condition. Reconnect. Applied voltage isn't Advise customer that in acceptable range. power supply needs to be 5 (115V ±10%) checked by an electrician. The range of resistance is between 1~50Ω(ok) Check Check resistance 3 2 resistance of between M-C, S-C and
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5-2. Positive Temperature Coefficient (PTC) – Starter 1. Composition (1) PTC (Positive Temperature Coefficient) is a no-contact semiconductor starting device which uses ceramic material consisting of BaTiO3. (2) The higher the temperature is, the higher the resistance value. These features are used as a starting device for the motor. 2. Role (1) The PTC is attached to the sealed compressor and is used for starting the compressor motor. (2) The compressor is a single-phase induction motor. For s
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5-3. Over Load Protector (OLP) 1. Define (1) The OLP (OVERLOAD PROTECTOR) is attached to the Compressor and protects the motor by opening the circuit to the motor if the temperature rises and activating the bimetal spring in the OLP. (2) When high current flows to the compressor motor, the Bimetal works by heating the heater inside the OLP, and the OLP protects the Motor by cutting off the current flowing to the Compressor Motor. (OVERLOAD PROTECTOR cross section) 2. Role Part No. Name
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6. TROUBLESHOOTING 6-1. Error Code Summary w w WARNING : When you check the Resistance values, be sure to turn off the power. And wait for the voltage-discharge sufficiently. Error Display Error Detection Error Generation Factors Remark Freezer Ref. NO Category Temperature Temperature Normality None Normal operation of Display 1 Short or Disconnection Freezer Sensor 2 Er FS of Freezer Sensor Error Refrigerator Short or Disconnection 3 Er rS Sensor Error of Refrigerator Sensor Check each sensor
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6-2. Troubleshooting With Error Freezer Sensor Err or Disconnect CON6 and measure Replace Is Er-FS dis played? No the value. Is resistance value F-sensor between pins 11 & 12 of CON6 as below? (BL to BL) pin12 pin11 Yes Is the connection loose? Reconnect Yes Test Point Result pin11 to pin12 1.4 ~ 120k‰ No No Reconnect CON6 and Power ON Power Off Tip : To protection of MICOM If the ER-FS appears, Replace the main PCB. Otherwise, explain to the customer! - 18 -
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Refrigerator Sensor Error Wiring dia gram Disconnect CON6 and measure Replace Is Er-rS displayed? No the value. Is resistance value R-sensor between pins 9 & 10 of CON6 as below? (WH to WH) pin10 pin9 Yes Is the connection loose? Reconnect Yes Tpin10 pin9 Result pin9 to pin10 6 ~ 300 k‰ No No Reconnect CON6 and Power ON Power Off Tip : To protection of MICOM If the ER-rS appears, Replace the main PCB. Otherwise, explain to the customer! - 19 -
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Defrost Sensor Error D-Sensor CON6 BO BO 7 1 6 Main PCB BO BO 8 2 7 Housing-A Wiring dia gram Is resistance value between Is Er-dS displayed? Replace a pins 1 & 2 of Housing- A as No D-Sensor below? (BO to BO) Yes pin2 Is the connection loose? Reconnect pin1 Yes Checking Open or Short of wire Test Point Result Pin1 To pin2 1.156 ~141.5k‰ No Yes Reconnect and Power ON Power Off Tip : To protection of MICOM If the ER-dS appears, Replace the main PCB. Otherwise, Disconnect CON6 and measure Re
