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8-2-8 Temperature Compensation & Overcooling/Undercooling Compensation Circuit

1. Refrigerator Temperature Compensation

2. The temperature compensation for refrigerator compartment is in the following table:

NOTE

: This circuit is designed to input the necessary temperature compensation values into the MICOM. This adjusts the

refrigerator temperature, which is different in each model.

- 3

5

-

Refrigerator

Resistance

Temperature Remark

(RCR)

Compensation

180 K

Ω

+2.5°C

Compensation by

56 K

Ω

+2.0°C

raising the

33 K

Ω

+1.5°C

temperature

18 K

Ω

+1.0°C

12 K

Ω

+0.5°C

10 K

Ω

0 °C

Standard Temperature

8.2 K

Ω

-0.5°C

Compensation by

5.6 K

Ω

-1.0°C

lowering the

3.3 K

Ω

-1.5°C

temperature

2 K

Ω

-2.0°C

470

Ω

-2.5°C

Revised resistance

470

Ω

2k

Ω

3.3k

Ω

5.6k

Ω

8.2k

Ω

10k

Ω

12k

Ω

18k

Ω

33k

Ω

56k

Ω

180k

Ω

Present resistance

No

0.5°C

1°C

1.5°C

2°C

2.5°C

3°C

3.5°C

4°C

4.5°C

5°C

470

Ω

change

Up

Up

Up

Up

Up

Up

Up

Up

Up

Up

0.5°C

No

0.5°C

1°C

1.5°C

2°C

2.5°C

3°C

3.5°C

4°C

4.5°C

2k

Ω

Down Change

Up

Up

Up

Up

Up

Up

Up

Up

Up

1°C

0.5°C

No

0.5°C

1°C

1.5°C

2°C

2.5°C

3°C

3.5°C

4°C

3.3k

Ω

Down

Down

Change

Up

Up

Up

Up

Up

Up

Up

Up

1.5°C

1°C

0.5°C

No

0.5°C

1°C

1.5°C

2°C

2.5°C

3°C

3.5°C

5.6k

Ω

Down

Down

Down

Change

Up

Up

Up

Up

Up

Up

Up

2°C

1.5°C

1°C

0.5°

No

0.5°C

1°C

1.5°C

2°C

2.5°C

3°C

8.2k

Ω

Down

Down

Down

Down

Change

Up

Up

Up

Up

Up

Up

Refrigerator

2.5°C

2°C

1.5°C

1°C

0.5°C

No

0.5°C

1°C

1.5°C

2°C

2.5°C

(RCR)

10k

Ω

Down

Down

Down

Down

Down Change

Up

Up

Up

Up

Up

3°C

2.5°C

2°C

1.5°C

1°C

0.5°C

No

0.5°C

1°C

1.5°C

2°C

12k

Ω

Down

Down

Down

Down

Down

Down

Change

Up

Up

Up

Up

3.5°C

3°C

2.5°C

2°C

1.5°C

1°C

0.5°C

No

0.5°C

1°C

1.5°C

18k

Ω

Down

Down

Down

Down

Down

Down

Down

Change

Up

Up

Up

4°C

3.5°C

3°C

2.5°C

2°C

1.5°C

1°C

0.5°C

No

0.5°C

1°C

33k

Ω

Down

Down

Down

Down

Down

Down

Down

Down

Change

Up

Up

4.5°C

4°C

3.5°C

3°C

2.5°C

2°C

1.5°C

1°C

0.5°C

No

0.5°C

56k

Ω

Down

Down

Down

Down

Down

Down

Down

Down

Down

Change

Up

5°C

4.5°C

4°C

3.5°C

3°C

2.5°C

2°C

1.5°C

1°C

0.5°C

No

180k

Ω

Down

Down

Down

Down

Down

Down

Down

Down

Down

Down

Change

➧

Table of Temperature Compensation by adjusting the
resistance (difference from the current temperature)
e.g., If the refrigerator compensation resistance
(RCR) is changed from 10K (the current resistance)
to 18K (the adjustment resistance), the temperature
of the refrigerator rises 33.8°F(+1°C).

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Содержание LRBC22522

Страница 1: ...CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL REFRIGERATOR SERVICE MANUAL Models LRDN22734SB LRDN22734ST LRDN22734TT LRDN22734WW ...

Страница 2: ...ck line voltage and amperage 4 Use standard electrical components 5 Don t touch metal products in the freezer with wet hands This may cause frostbite or cause your skin to freeze and stick to the surfaces inside the freezer 6 Prevent water from flowing onto electric elements in the mechanical parts 7 Close the top door before opening the bottom door Otherwise you might hit your head when you stand...

Страница 3: ... TEMPERATURE CONTROL Micom Control Full Automatic DEFROSTING SYSTEM Heater Defrost DOOR FINISH Embossed Metal VCM Stainless HANDLE TYPE Bar Al INNER CASE ABS Resin INSULATION Polyurethane Foam ITEMS SPECIFICATIONS VEGETABLE TRAY Opaque Drawer Type COMPRESSOR PTC Starting Type EVAPORATOR Fin Tube Type CONDENSER Wire Condenser REFRIGERANT R 134a 115 g LUBRICATING OIL Freol 10G 310 cc DEFROSTING DEVI...

Страница 4: ...Divider Filter inside Dairy Bin Design A Door Egg Box Refrigerator Door Rack Freezer Light Wire Basket Freezer Door Rack Tilting on some models B C D A F E NOTE This guide covers several different models The refrigerator you have purchased may have some or all of the items listed below The locations of the features shown below may not match your model G H I J K M N L O P Q R PARTS AND FEATURES 2 P...

Страница 5: ...Durabase Divider Filter inside Dairy Bin Design A Door Egg Box Refrigerator Door Rack Freezer Light Wire Basket Freezer Door Rack Tilting on some models B C D A F E NOTE This guide covers several different models The refrigerator you have purchased may have some or all of the items listed below The locations of the features shown below may not match your model G H I J K M N L O P Q R PARTS AND FEA...

Страница 6: ...ot match your model A B C D E F G H I J K L M N P O Digital Sensor Control Refrigerator Light Shelves Snack Pan Optibin Crisper Keeps fruits and vegetable fresh and crisp Triple Twist Ice Tray Ice Bin Wire Durabase Divider Dairy Bin Design A Door Egg Box Refrigerator Door Rack Freezer Light Wire Basket Freezer Wire Door Rack B C D A F E G H I J L M K N O P PARTS AND FEATURES 6 ...

Страница 7: ...shown below may not match your model PARTS AND FEATURES Digital Sensor Control Refrigerator Light Shelves Snack Pan Optibin Crisper Keeps fruits and vegetable fresh and crisp Ice Trays Ice Bin Wire Durabase Dairy Bin Design A Door Wire Freezer Shelf Refrigerator Door Rack Freezer Light Freezer Door Rack B C D A F E G H I J L M K N A B C D E F G H I J M N L K 7 ...

Страница 8: ... Door 1 Loosen the hexagonal bolts attaching the lower hinge to the body to remove the refrigerator door only 2 Pull out the door gasket to remove from the door foam assembly 3 2 DOOR SWITCH 1 To remove the door switch pry it out with a slotted type driver as shown in Figure 4 2 Disconnect the lead wire from the switch 3 DISASSEMBLY 8 BOLT HINGE HINGE COVER Figure 1 GASKET Figure 2 LOWER HINGE BOL...

Страница 9: ...cord from the outlet 2 Remove refrigerator shelves 3 Release the hooks on both ends of the lamp shield and pull the shield downward to remove it 4 Turn the lamp counterclockwise 5 Assemble in reverse order of disassembly Replacement bulb must be the same specification as the original Max 60 W 2EA 3 5 2 Freezer Compartment Lamp 1 Unplug refrigerator or disconnect power 2 Reach behind light shield t...

Страница 10: ...t flow to both the start winding and main winding 4 2 3 PTC Applied Circuit Diagram Starting Method for the Motor 4 2 4 Motor Restarting and PTC Cooling 1 It requires approximately 5 minutes for the pressure to equalize before the compressor can restart 2 The PTC device generates heat during operation Therefore it must be allowed to cool before the compressor can restart 4 2 5 Relation of PTC Star...

Страница 11: ... Cover Back M C 2 Remove the screw on Cover PTC 3 Remove two Housings on upper part of Cover PTC 4 Take out the cover PTC from upper to lower position like 5 Turn 45 in the direction of and take it out 6 Assembly in reverse order of disassembly 11 Part Customer part number Lot code date code 330 FBYY S1 BOX98 12345678 Physical termination part number Electrical characteristics part number No Name ...

Страница 12: ...GY GRIS GRAY Best Best dispenser 5 CIRCUIT DIAGRAM 12 ...

Страница 13: ...GY GRIS GRAY Good Better 13 ...

Страница 14: ... that power supply needs to be checked by an electrician Replace Compressor Supply voltage rating with 10 Applied voltage isn t in range of Rating Voltage 10 Remove PTC Starter from Compressor and measure voltage between Terminal C of Compressor and Terminals 5 or 6 of PTC Check resistance between M C S C and M S in Motor Compressor Check resistance of two terminals in PTC Starter Check resistance...

Страница 15: ...ure resistance between No 5 and 6 of PTC Starter with a Tester Figure 14 Separate OLP from Compressor and check resistance value between two terminals of OLP with a Tester Figure 15 Observation value is 115V 60Hz 6 8Ω 30 The resistance value is 0Ω short or open Check another electric component Replace OLP Replace PTC Starter Figure 14 Figure 15 ...

Страница 16: ...apacity Replace indicated component Advise customer that the Power supply needs to be checked by an electrician Replace indicated component Cause Check voltage at starting devices Check current flowing in sub coil of Compressor Check rating of OLP Fan motor doesn t run Heavy frost buildup on EVAPORATOR Wire is open or shorted Coil is shorted or open Open Open Replace Defrost Heater Replace indicat...

Страница 17: ...e high Is there a gap in the door gasket Is the unit positioned in a firm and even place Are any unnecessary objects placed in the back side of the unit Check if the Drip Tray is not firmly fixed Check if the cover of the compressor enclosure in the lower front side is taken out Check if the door gasket is dirty with an item like juice Is the refrigerator level Is there too much food in the refrig...

Страница 18: ...ng sound of refrigerant A little higher Normal discharging of the CLOG compartment and is heard and frost forms than ambient refrigerant Refrigerator don t in inlet only temperature The capillary tube is faulty cool normally WHOLE Freezer Flowing sound of refrigerant Equal to ambient Normal discharging of the CLOG compartment and is not heard and frost isn t temperature Refrigerant Refrigerator do...

Страница 19: ...g Do not mix with R 12 refrigerant To remove the moisture from pipe inside Defect in refrigerant leak area The opening time should be reduced to a half of the standards during rain and rainy seasons the penetration of water into the pipe is dangerous Refer to repair note in each part R 134a refrigerant is more susceptible to leaks than R 12 and requires more care during welding Do not apply force ...

Страница 20: ...o Start Position with power on Power On Start Position Ice Making Mode Harvest Mode Park Position Fill Test Mode Waits until water becomes cold after starting the ice making operation Runs MOTOR to drop ice from the tray the ICE BIN Performs Ice Making Mode after supplying water by operating the SOLENOID in ICE VALVE To operate LINE and SERVICE press and hold the Fill Key for 3 seconds The ice mak...

Страница 21: ...ting 4 If the temperature sensor is defective the ice making function will be completed in 4 hours 7 2 3 Harvest Mode 1 Ice removing control refers to the operation of dropping cubes into the ice bin from the tray when ice making has completed 2 Ice removing control mode 1 Operates Heater for 30 seconds then operate MOTOR 2 After performing Step 1 to control the Heater on its off condition Ice Rem...

Страница 22: ...aking tray 2 Water supply level is adjustable in levels 1 5 by pressing the water supply control Switch and fill time will be determined by the selected level Water supply amount TABLE NOTE Below is an example used by another vendor as an explanation of what is taking place 22 STAGE TIME TO SUPPLY INDICATIONS REMARKS 1 2 3 4 5 6 sec 7 sec 8 sec 9 sec 10 sec The water amount will vary depending on ...

Страница 23: ...aker water supply control panel ERROR indicators in table can be checked only in TEST mode 23 STAGE ITEMS INDICATOR REMARKS 1 2 3 4 5 6 HEATER MOTOR HALL IC detection of position I VALVE HALL IC detection of full filled Ice II reset Five seconds after heater starts heater will go off if temperature recorded by sensor is 10 C or lever is in up position Five seconds after heater starts you can confi...

Страница 24: ...is F Whenever the mode is changed the LED lights are changed 8 1 3 Dispenser Lock 1 Press and hold the DISPENSER LOCK button for 3 seconds to lock the dispenser 2 When locked the LED is off and the dispenser function is turned off 3 Press and hold the DISPENSER LOCK button again for 3 seconds to unlock the dispenser The LED will be on and the dispenser will function normally 8 DESCRIPTION OF FUNCT...

Страница 25: ...e for three hours 2 If defrost starts during EXPRESS FREEZING EXPRESS FREEZING operates for the rest of time after defrost is completed when EXPRESS FREEZING operation time is less than 90 minutes If EXPRESS FREEZING operates for more than 90 minutes the EXPRESS FREEZING will operate for two hours after defrost is completed 3 If EXPRESS FREEZING is pressed during defrost EXPRESS FREEZING LED is on...

Страница 26: ...te that the UNIT is reset to its initial conditions so this process is restarted 8 1 11 Power Failure Compensation Function 1 When the UNIT is power off the Fresh Food and Freezer Temperature notches the filter elapsed time for replacement the temperature mode C or F and the dispenser lock mode are saved in the EEPROM 2 When the UNIT is power on the MICOM will read the specified EEPROM addresses t...

Страница 27: ... RECOMMENDED 0 F IS RECOMMENDED FREEZER TEMP COLDER WARMER EXPRESS FREEZING BEST MODEL WATER FILTER NO ITEM ERROR CODE CONTENTS REMARKS 1 2 3 4 5 Failure of freezer sensor Failure of Refrigerator sensor Failure of defrost sensor Failure of defrost mode Failure of BLDC FAN MOTOR at freezing compartment Cut or short circuit wire Cut or short circuit wire Cut or short circuit wire When defrost sensor...

Страница 28: ... if normal speed to high speed for 30 seconds After 30 seconds it turns to its original RPM Demostration MODE 1 When the WARMER KEY of refrigerator Temp control or of freezer Temp control in the the warmest temperature s status are pushed and held for 3 seconds or longer It converts to Demonstration Mode 2 It shows OFF on the display panel 3 In this status all Loads are off Compressor Fan Damper H...

Страница 29: ... and the MICOM and IC 5 Vdc The voltage for each part is as follows VA1 is a part for preventing over voltage and noise When 385V or higher power is applied the inside elements are short circuited and broken resulting in blowout of the fuse in order to protect the elements of the secondary part of the TRANSFORMER 29 PART VA 1 CE 3 CE 4 CE 5 VOLTAGE 115 Vac 12 Vdc 15 5 Vdc 5 V ...

Страница 30: ...ot work 8 2 3 Reset Circuit The RESET circuit allows all the functions to start at the initial conditions by initializing various parts including the RAM inside the MICOM IC1 when the power is initially supplied or the power supply to the MICOM is restored after a momentary power failure For the initial 10ms of power supply LOW voltage is applied to the MICOM RESET terminal During a normal operati...

Страница 31: ...an motor and applies DC voltage up to 7 5V 16V to motor 3 This circuit prevents over driving the fan motor by cutting off power applied to the fan motor in the lock of fan motor by sensing the operation RPM of the fan motor 31 FREEZER DOOR SWITCH REFRIGERATOR DOOR SWITCH LOAD TYPE COMP NO 13 NO 14 NO 16 NO 12 NO 15 1V or below 12V DEFROSTING HEATER LAMP TCM POWER MODE OPTIONAL VALVE DISPENSER MDL ...

Страница 32: ... V 0 V 5 V 0 5 s 0 5 s 2 63kz Beep OFF 0 05 s 0 1 s 0 2 s 2 s 0 V 5 V 0 V 5 V 2 63 kz Ding 2 21 kz Dong PIN NO 63 PIN NO 8 Closed 5 V Open 0 V Freezer Refrigerator Door Measurement Location FREEZER DOOR SWITCH REFRIGERATOR DOOR SWITCH A B Tone Ding Dong when the button on the display is pushed Alarm for open door beep beep beep ...

Страница 33: ...emperature for compensating for the surrounding temperature into MICOM OPENING or SHORT state of each TEMPERATURE SENSOR are as follows 33 SENSOR CHECK POINT NORMAL 30 C 50 C SHORT CIRCUITED OPEN Freezer Sensor POINT Voltage Refrigerator Sensor POINT Voltage 0 5 V 4 5 V 0 V 5 V Defrosting Sensor POINT Voltage A B C FREEZER SENSOR REFRIGERATOR SENSOR DEFROST SENSOR ...

Страница 34: ...6 Refrigeration Compartment Stepping Motor Damper Circuit The circuit shown below is the damper circuit to regulate the refrigerator temperature 8 2 7 Dispenser Input LED Output Circuit 34 PUMP SWITCH 1 2 3 ...

Страница 35: ... 3kΩ Down Down Change Up Up Up Up Up Up Up Up 1 5 C 1 C 0 5 C No 0 5 C 1 C 1 5 C 2 C 2 5 C 3 C 3 5 C 5 6kΩ Down Down Down Change Up Up Up Up Up Up Up 2 C 1 5 C 1 C 0 5 No 0 5 C 1 C 1 5 C 2 C 2 5 C 3 C 8 2kΩ Down Down Down Down Change Up Up Up Up Up Up Refrigerator 2 5 C 2 C 1 5 C 1 C 0 5 C No 0 5 C 1 C 1 5 C 2 C 2 5 C RCR 10kΩ Down Down Down Down Down Change Up Up Up Up Up 3 C 2 5 C 2 C 1 5 C 1 C ...

Страница 36: ...her a function control key on the operation display is pushed It also turns on the corresponding function indication LED LED Module SEVEN SEGMENT DISPLAY SEVEN SEGMENT DISPLAY MODULE The drive type is the scan type 8 2 10 Power Failure Compensation Circuit DISPENSER MODEL 36 220 1 2W R25 ...

Страница 37: ... Measure the F SENSOR SUPER FROST SENSOR R1 R2 SENSOR after disconnect CON5 of PWB ASSY MAIN TEMPERATURE DETECTED RESISTANCE OF FREEZER RESISTANCE OF REFRIGERATOR BY SENSOR SENSOR DEFROST SENSOR ROOM SENSOR 20 C 22 3 KΩ 77 KΩ 15 C 16 9 KΩ 60 KΩ 10 C 13 0 KΩ 47 3 KΩ 5 C 10 1 KΩ 38 4 KΩ 0 C 7 8 KΩ 30 KΩ 5 C 6 2 KΩ 24 1 KΩ 10 C 4 9 KΩ 19 5 KΩ 15 C 3 9 KΩ 15 9 KΩ 20 C 3 1 KΩ 13 KΩ 25 C 2 5 KΩ 11 KΩ 30...

Страница 38: ...r compressor shuts off COMPRESSOR RELAY is Replace MAIN PWB don t press the KEY and poor wait THE CONNECTING WIRE Check the connection of the is poor black wire of the MAIN PWB CONNECTOR CON2 2 If refrigerant is leaking Measure the amount of frost Refrigerant leakage Replace the leaking part and sticking on EVAPORATOR replace any lost refrigerant and the surface temperature of the condenser pipe F...

Страница 39: ...liner damaged Replace Door liner door is closed DEFROSTING is NO DEFROSTING 1 If HEATER emits heat USE TEST MODE2 HEATER disconnection Replace HEATER poor forced DEFROSTING TEMPERATURE FUSE Replace TEMPERATURE disconnection FUSE Connection is poor Check EVAPORATOR connection and wire of MAIN PWB CONNECTOR DEFROST SENSOR is poor Replace DEFROST SENSOR HEATER RELAY is poor Replace RY3 of MAIN PWB 2 ...

Страница 40: ...8 5 MAIN PWB ASSEMBLY AND PARTS LIST 8 5 1 Main PWB Assembly 40 ...

Страница 41: ...8 5 2 Replacement Parts List 41 ...

Страница 42: ...8 5 3 PWB Assembly Display And Parts List 42 SW106 Dispenser Model Best Model ...

Страница 43: ...8 6 PWB DIAGRAM 8 6 1 PWB Main Assembly 43 FREEZER DOOR SWITCH REFRIGERATOR DOOR SWITCH PWB ASSEMBLY G5SB 14 RY4 RY5 ...

Страница 44: ... 44 FREEZER SENSOR FREEZER DOOR SWITCH REFRIGERATOR DOOR SWITCH REFRIGERATOR SENSOR DEFROST SENSOR 220 1 2W ...

Страница 45: ... first three hours the compressor and Freezer Fan will be ON The next 21hours the freezer will be controlled at the lowest temperature After 24 hours or if the Express Freezing key is pressed again the freezer will return to its previous temperature 5 For the first three hours notice the following cases 1 Compressor and freezer fan HIGH RPM continuously operate for three hours 2 If defrost starts ...

Страница 46: ... Refer to the defect diagnosis function 7 1 9 4 Defrosting won t function if its sensor is defective wires are cut or short circuited 9 1 8 Electrical Parts Are Turned On Sequentially Electrical parts such as COMP defrosting heater freezer FAN etc are turned on in the following order to prevent noise and parts damage Several parts are started at the same time at initial power on and are turned off...

Страница 47: ... REFRIGERATOR TEMP FREEZER TEMP 4 IS RECOMMENDED COLDER EXPRESS FREEZING ADJUST WARMER 4 IS RECOMMENDED COLDER NO ITEM ERROR CODE CONTENTS REMARKS 1 2 3 4 Failure of freezer sensor Failure of Refrigerator sensor Failure of defrost sensor Poor of defrost Cut or short circuit wire Cut or short circuit wire Cut or short circuit wire 2hours later After starting defrost If sensor doesn t be over 46 F 8...

Страница 48: ...rmal speed or if normal speed to high speed for 30 seconds After 30 seconds it turns to its original RPM Demonstration MODE 1 When the KEY of refrigerator Temp control or of freezer Temp control is pushed and held over 5 seconds warmest temperature s It converts to Demonstration Mode 2 In this status each LED is rotated with 1 second interval 3 In this status all Loads are off Compressor Fan Dampe...

Страница 49: ... and the MICOM and IC 5 Vdc The voltage for each part is as follows VA1 is a part for preventing over voltage and noise When 385V or higher power is applied the inside elements are short circuited and broken resulting in blowout of the fuse in order to protect the elements of the secondary part of the TRANSFORMER 49 PART VA 1 CE 2 CE 1 CE 4 VOLTAGE 115 Vac 12 Vdc 15 5 Vdc 5 V ...

Страница 50: ...ot work 9 2 3 Reset Circuit The RESET circuit allows all the functions to start at the initial conditions by initializing various parts including the RAM inside the MICOM IC1 when the power is initially supplied or the power supply to the MICOM is restored after a momentary power failure For the initial 10ms of power supply LOW voltage is applied to the MICOM RESET terminal During a normal operati...

Страница 51: ...tection Circuit 1 Load Drive Condition Check G5SB 14 LOAD TYPE COMP NO 11 NO 14 NO 15 NO 12 NO 13 1V or below 12V DEFROSTING HEATER LAMP FREEZER FAN MOTOR HIG RPM FREEZER FAN MOTOR LOW RPM Measurement Location IC4 Condition ON OFF 51 RY5 ...

Страница 52: ...cation Condition 0 V 5 V 0 V 5 V 0 5 s 0 5 s 2 63kz Beep OFF 0 05 s 0 1 s 0 2 s 2 s 0 V 5 V 0 V 5 V 2 63 kz Ding 2 21 kz Dong PIN NO 31 PIN NO 30 Closed 5 V Open 0 V Freezer Refrigerator Door Measurement Location A B Tone Ding Dong when the button on the display is pushed Alarm for open door beep beep beep ...

Страница 53: ...frosting and the indoor temperature for compensating for the surrounding temperature into MICOM OPENING or SHORT state of each TEMPERATURE SENSOR are as follows 53 SENSOR CHECK POINT NORMAL 30 C 50 C SHORT CIRCUITED OPEN Freezer Sensor POINT Voltage Refrigerator Sensor POINT Voltage 0 5 V 4 5 V 0 V 5 V Defrosting Sensor POINT Voltage A B C ...

Страница 54: ...9 2 6 Refrigeration Compartment Stepping Motor Damper Circuit The circuit shown below is the damper circuit to regulate the refrigerator temperature 54 ...

Страница 55: ... 3kΩ Down Down Change Up Up Up Up Up Up Up Up 1 5 C 1 C 0 5 C No 0 5 C 1 C 1 5 C 2 C 2 5 C 3 C 3 5 C 5 6kΩ Down Down Down Change Up Up Up Up Up Up Up 2 C 1 5 C 1 C 0 5 No 0 5 C 1 C 1 5 C 2 C 2 5 C 3 C 8 2kΩ Down Down Down Down Change Up Up Up Up Up Up Refrigerator 2 5 C 2 C 1 5 C 1 C 0 5 C No 0 5 C 1 C 1 5 C 2 C 2 5 C RCR 10kΩ Down Down Down Down Down Change Up Up Up Up Up 3 C 2 5 C 2 C 1 5 C 1 C ...

Страница 56: ...lay Light On Circuit The circuit shown above determines whether a function control key on the operation display is pushed It also turns on the corresponding function indication LED DISPLAY The drive type is the scan type 56 150J ...

Страница 57: ... Measure the F SENSOR SUPER FROST SENSOR R1 R2 SENSOR after disconnect CON5 of PWB ASSY MAIN TEMPERATURE DETECTED RESISTANCE OF FREEZER RESISTANCE OF REFRIGERATOR BY SENSOR SENSOR DEFROST SENSOR ROOM SENSOR 20 C 22 3 KΩ 77 KΩ 15 C 16 9 KΩ 60 KΩ 10 C 13 0 KΩ 47 3 KΩ 5 C 10 1 KΩ 38 4 KΩ 0 C 7 8 KΩ 30 KΩ 5 C 6 2 KΩ 24 1 KΩ 10 C 4 9 KΩ 19 5 KΩ 15 C 3 9 KΩ 15 9 KΩ 20 C 3 1 KΩ 13 KΩ 25 C 2 5 KΩ 11 KΩ 30...

Страница 58: ...r compressor shuts off COMPRESSOR RELAY is Replace MAIN PWB don t press the KEY and poor wait THE CONNECTING WIRE Check the connection of the is poor black wire of the MAIN PWB CONNECTOR CON2 2 If refrigerant is leaking Measure the amount of frost Refrigerant leakage Replace the leaking part and sticking on EVAPORATOR replace any lost refrigerant and the surface temperature of the condenser pipe F...

Страница 59: ...liner damaged Replace Door liner door is closed DEFROSTING is NO DEFROSTING 1 If HEATER emits heat USE TEST MODE2 HEATER disconnection Replace HEATER poor forced DEFROSTING TEMPERATURE FUSE Replace TEMPERATURE disconnection FUSE Connection is poor Check EVAPORATOR connection and wire of MAIN PWB CONNECTOR DEFROST SENSOR is poor Replace DEFROST SENSOR HEATER RELAY is poor Replace RY3 of MAIN PWB 2 ...

Страница 60: ...9 5 MAIN PWB ASSEMBLY AND PARTS LIST 9 5 1 Main PWB Assembly 60 ...

Страница 61: ...9 5 2 Replacement Parts List 61 ...

Страница 62: ...9 5 3 PWB Assembly Display And Parts List 62 ...

Страница 63: ...9 6 PWB DIAGRAM 9 6 1 PWB Main Assembly 63 G5S 1A RY5 ...

Страница 64: ... 64 ...

Страница 65: ...8A 281A 281B 305B 305B 305C 305C 105F 323B 329C 420A 319A 319C 503D 282B 282H 410A 406B 409D 120B 409B 158A 332A 135C 158E 145B 409B 503C 503E 106A 145A 282F 903D 610A 903E 610A CASE PARTS CAUTION Use the part number to order part not the position number B01 106B 903A 903B 903B 103C 503G 503F B01 S22 S01 S38 619B 327A EV 405A 405C 405F 319E 329A 404A 405G 284E 284B EXPLODED VIEW 65 623H 282X ...

Страница 66: ...FREEZER PARTS CAUTION Use the part number to order part not the position number 136A 131A 237C 248F 125A 145D 145G 285A 136B 248E 136F 249G EV 66 ...

Страница 67: ...r part not the position number EV 146A 140B 140F 140A 128A 128B 103E 103E 141B 141C 141A 141D 149C 141E 149E 142B 142E 142D 142A 170A 128A S24 128C 128M 278C 128G 103E 103E 160B 161A 151A 155B 161A 160B 151C 167B 154A 168A 151A 103E 103E 147C 147B 147A 67 ...

Страница 68: ...5C 205B 205A 233A 230A 231A 241A 241B 281E 241E 241C 241D 243A 2 244H 244E 700C 212G 212F 212F S27 286A 286A 212J 212J DOOR PARTS CAUTION Use the part number to order part not the position number 203A 200A 201A 700B 244G 244F 212B Models LRDN22734WW 237A 241F 68 ...

Страница 69: ...05C 205B 205A 233A 230A 231A 241A 241B 241E 241C 241D 212G 244A 700B 244B 244C 212J DOOR PARTS CAUTION Use the part number to order part not the position number 203A 200A 700B 201A 212A 245A 245B 212J Models LRDN22734SB LRDN22734ST LRDN22734TT 237A 241F 147D 69 ...

Страница 70: ...June 2009 ...

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