Kenmore 795.78306.801, 795.78314.800, 795.78316.802, 795.78309.802, 795.78319.800 User Manual

...

BOTTOM FREEZER REFRIGERATOR

REFRIGERATOR

SERVICE MANUAL

CAUTION BEFORE SERVICING THE PRODUCT READ THE SAFETY PRECAUTIONS IN THIS MANUAL

ENGLISH

Models:

795.78302.800/801/802

795.78304.800/801/802

795.78306.800/801/802

795.78309.800/801/802

795.78312.800/801/802

795.78314.800/801/802

795.78316.800/801/802

795.78319.800/801/802

Sears, Roebuck and Co., Hoffman Estates, IL60179 U.S.A.

www.sears.com

CONTENTS

SAFETY PRECAUTIONS .....................................................................................................

1. SPECIFICATIONS ............................................................................................................

2. PARTS IDENTIFICATION .................................................................................................

3. DISASSEMBLY .................................................................................................................

3.1 Door .............................................................................................................................

3.2 Door alignment .............................................................................................................

3.3 Fan and fan motor .......................................................................................................

3.4 Defrost control assembly .............................................................................................

3.5 Lamp ............................................................................................................................

3.6 Control box-refrigerator ................................................................................................

3.7 Multi duct ......................................................................................................................

3.8 How to remove and reinstall the pull out drawer ..........................................................

3.9 Cover Valve ..................................................................................................................

4. COMPRESSOR ELECTRICAL ........................................................................................

4.1 Compressor ..................................................................................................................

4.2 PTC-Starter/Combo .....................................................................................................

4.3 OLP (Overload Protector) ............................................................................................

4.4 To remove the cover PTC ............................................................................................

4.5 To remove the Combo ..................................................................................................

5. CIRCUIT DIAGRAM .........................................................................................................

6. TROUBLESHOOTING ......................................................................................................

6.1 Compressor and electrical components ......................................................................

6.2 PTC/Combo and OLP ................................................................................................

6.3 Other electrical components .......................................................................................

6.4 Service diagnosis chart ...............................................................................................

6.5 Refrigeration cycle ......................................................................................................

7. OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER ...............................

7.1 Operation principle ......................................................................................................

7.2 Ice maker functions .....................................................................................................

7.3 Defect diagnosis function ............................................................................................

8. DESCRIPTION OF FUNCTION & CIRCUIT OF MICOM .................................................

8.1 Function .....................................................................................................................

8.2 PCB function ...............................................................................................................

8.3 Resistance specification of sensor ..............................................................................

8.4 Troubleshooting ...........................................................................................................

8.5 Main PWB assembly and parts list ..............................................................................

8.6 PWB diagram ..............................................................................................................

9. EXPLODED VIEW AND REPLACEMENT PART LIST ....................................................

783**.800 ..........................................................................................................................

783**.801 ..........................................................................................................................

783**.802 ..........................................................................................................................

2 3 5 6 6 7 8 8 8 8 8 9 12 13 13 13 14 14 14 15 16 16 17 18 19 20 22 22 23 24 25 25 30 31 32 34 35 37 42 50 58

SAFETY PRECAUTIONS

Please read the following instructions before servicing your refrigerator.

1. Check the refrigerator for current leakage.

2. To prevent electric shock, unplug before servicing.

3. Always check line voltage and amperage.

4. Use standard electrical components.

5. Don’r touch metal products in the freezer with wet hands. This may cause frost bite.

6. Prevent water from spiling on to electrical components or the machine parts.

7. Before tilting the refrigerator, remove all materials from on or in the refrigerator.

8. When servicing the evaporator, wear gloves to prevent injuries from the sharp evaporator fins.

9. Service on the refrigerator should be performed by a qualified technician. Sealed system repair must be performed by a CFC certified technician.

-2-

1. SPECIFICATIONS

1-1 DISCONNECT POWER CORD BEFORE SERVICING IMPORTANT: RECONNECT ALL GROUNDING DEVICES.

All parts of this appliance capable of conducting electrical current are grounded. If grounding wires, screws, straps, clips, nuts or washers used to complete a path to ground are removed for service, they must be returned to their original position and properly fastened.

1-2 IMPORTANT NOTICE

This information is intended for use by individuals possessing adequate background of electrical, electronic and mechanical experience. Any attempt to repair a major appliance may result in personal injury and property damage. The manufacturer or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use.

ELECTRIC AL SP E CIFIC ATION S

1.3

Freezer Temperature Control (Middle setting)

Defrost Control ...................................................................................................................................................................................Automatic

Defrost Thermostat .....................................................................................................................................................................................50°F

Electrical Rating : 115VAC, 60Hz...............................................................................................................................................................1- 5 A

Maximum Current Leakage .....................................................................................................................................................................0.5mA

Maximum Ground Path Resistance ..................................................................................................................................................0.14 Ohms

Energy Consumption

1-4 NO LOAD PERFORMANCE

Control Po sitio n : MID/M ID

And Ambient of: 70°F

Fresh Food, °F...............................................................

Frozen Food, °F..............................................................

Percent Running Time........................................................

1-5 REFRIGERATION SYSTEM

....................................................................................................................................22 cu.ft. 466 kWh/yr (Energy Star)

................................................................................................................... -6°F

33°F to 41°F

-4°F to +4°F 25%-35%

......................................................................................

1-6 INSTALLATION

33°F to 41°F

-4°F to +4°F .

...

45%-60%

90°F

Minimum Compressor Capacity Vacuum ...................................21 in

Minimum Equalized Pressure

@70°F......................................................................49PSIG

@90°F......................................................................56PSIG

Refrigerant R134a................................................................. 4.2. oz

Compressor ................................................................... 700 BTU/hr

- 3 -

Clearance must be provided at top, sides and rear of the refrigerator for air circulation.

AT TOP..........................................................................................1 in

AT SIDES.................................................................................. 1/8 in

AT REAR.......................................................................................1 in

PERFORMANCE DATA

(NORMAL OPERATING CONDITIONS)

AMB WATTS

70°F 90°F

110°F

98 (+10 / -10) 98 (+10 / -10) 103 (+5 / -5)

1-8 AIR FLOW / CIRCULATION D’AIR.

SYSTEM PRESSURE (PSIG)

HIGH SIDE LOW SIDE

98 (+5 / -3) 132 (+3 / -3) 180 (+5 / -5)

(-5) to (-2)

(-4) to 1 (-2) to 3

1-7 REPLACEMENT PARTS

Compressor (SVC kit) .......ACF67062301

Relay .................................6748JJ8005B

Overload ...........................6750JJ8004B

Defrost Thermostat ...........6615JB2005C

Defrost Heater ...................5300JB1100J

Evaporator Fan Motor .......4681JK1004A

Capacitor..........................0CZZJB2012J

Compressor (Hi-Side) ........2521JJ8008B

Evaporator (Lo-Side) .........5421JJ1001B

Condenser ........................5403JJ1007A

Dryer .................................5851JJ2002F

Condenser Fan Motor ........4681JB1029J

Temperature Control .........6871JB2046B

Main Control .....................EBR41531305

EVAPORATOR FAN

DRYER

COMPRESSOR

EVAPORATOR

HOT LOOP

CONDENSER

CONDENSER FAN

COLD AIR

MIXED AIR

AIR RETURN TO EVAPORATOR

EVAPORATOR

FRESH FOOD

Vegetable box

FREEZER

- 4 -

2. PARTS IDENTIFICATION

K O

N M

Use this section to become more familiar with the parts and features.

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.

Cool Sense Electronic Temperature

Control System

Refrigerator Light

Refrigerator Shelves

Snack Pan Supra Fresh Crisper with Tilt-Out Compartment

Adjusta Cube Ice Maker

F G

Ice Bin

Durabase

Glide-Out Drawer Basket Freezer Light

Modular Door Bins

Egg Box

M N

Can Rack* Dairy Corner

Divider

*On some models

- 5 -

3. DISASSEMBLY

3-1 DOOR

? Left Door

• Loosen the cover screw (1).

• Disconnect door switch wire (2).

• Loosen hinge bolts (3).

• Lift off the top hinge (4).

• Place the door on a non-scratching surface with the inside up.

? Right Door

• Loosen the cover screw (1).

• Disconnect door switch wire (2).

• Disconnect wire harness (5).

• Loosen hinge bolts (3).

• Loosen ground screw (6).

• Lift off the top hinge (4).

• Place the door on a non-scratching surface with the inside up.

(1)

(2)

(5)

(3)

(4)

2. Remove gasket bracket clips

There are two clips on each door. Start bracket removal near one of the middle clips.

1) Pull gasket back to expose gasket bracket clip and door frame.

2) Insert a flat tip screwdriver into seam between gasket bracket and door frame and pry back until clips snap out.

3) Continue prying back along seam until all clips snap out.

Door

Frame

Flat Tip

Screwdriver

(1)

(2)

(5)

(3)

(6)

3. Remove gasket

Pull gasket free from gasket channel on the three

(4)

remaining sides of door.

Gasket

Bracket Clip

Figure 3

Gasket

Bracket

Figure 1

Door Gasket Removal

1. Remove door frame cover

Starting at top of cover and working down, snap cover out and away from door.

Frame Cover

Handle

Figure 2

Figure 4

Door Gasket Replacement

1. Insert gasket bracket clips

1) Insert gasket bracket edge beneath door frame edge.

2) Turn upper gasket bracket spring so that both spring ends are in the door channel.

3) Push in clip until you hear it snap securely into place.

Gasket Bracket Clip

Spring

Door

Frame

4) Push in remaining two clips until you hear each snap securely into place.

Note: Make sure that no part of gasket bracket edge

Protrudes from beneath door frame edge.

Correct Incorrect

Figure 5

- 6 -

2. Insert gasket into channel

3-2 DOOR ALIGNMENT

1) Snap gasket assembly into the door bracket.

Inserting the Gasket Assembly into the Bracket Door.

Correct

Incorrect

Figure 6

If the space between your doors is uneven, follow the instructions below to align the doors:

1. With one hand, lift up the door you want to raise near the middle hinge.

2. With other hand, use pliers to insert snap ring at the

middle hinge as shown.

3. Insert additional snap rings until the doors are aligned. (Three snap rings are provided with the product.)

2) Press gasket into channel on the three remaining sides of door.

Figure 7

3. Replace door frame cover

Starting at top of cover and working down, snap the cover back into door.

Figure 9

Figure 8

- 7 -

3-3 FAN AND FAN MOTOR

1. Remove the freezer shelf. (If your refrigerator has an icemaker, remove the icemaker first)

2. Remove the plastic guide for slides on left side by unscrewing phillips head screws.

3. Remove the grille by removing one screw and pulling the grille forward.

4. Remove the Fan Motor assembly by loosening 2 screws.

5. Pull out the fan and separate the Fan Motor and Bracket.

FAN MOTOR

BRACKET

MOTOR

3-5-1 Refrigerator Compartment Lamp

1. Unplug the power cord from the outlet.

2. Remove refrigerator shelves.

3. Release the hooks on the front of the light shield with the help pf a flat screwdriver and pull the shield down to remove it.

4. Turn the bulb counterclockwise.

5. To assemble, first insert the hooks at the back and then push up the light shield.

Figure 15

FAN

GRILLE

Figure 11

3-4 DEFROST CONTROL ASSEMBLY

Defrost Control assembly consists of Defrost Sensor and FUSE–M.

The Defrost Sensor works to defrost automatically. It is attached to the metal side of the Evaporator and senses its Temperature.

Fuse-M is a safety device for preventing over-heating of the evaporator area when defrosting.

At 72°C, it turns the Defrost Heater off.

1. Pull out the grille assembly. (Figure 12)

2. Separate the connector with the Defrost Control assembly and replace the Defrost Control assembly

after cutting the tie wrap. (Figure 13)

3. Be sure to retie the wires when reassembling after service.

GRILLE ASSEMBLY

Figure 12

3-5 LAMP

DEFROST-CONTROL ASSEMBLY

Figure 13

3-5-2 Freezer Compartment Lamp

1. Unplug refrigerator or disconnect power.

2. Reach behind light shield to remove bulb.

3. Replace bulb with a wattage indicated in the refrigerator section, as shown in picture 1.

4. Plug in refrigerator or reconnect power.

1111

Figure 16

3-6 REFRIGERATOR CONTROL BOX

1. First, remove all shelves in the refrigerator, than remove the Refrigerator control Box by loosening 2 screws.

CONTROL BOX

COVER LAMP

Figure 17

2. Remove the Refrigerator Control Box by pulling it downward.

3. Disconnect the lead wire on the right position and separate the lamp sockets.

3-7 MULTI DUCT

1. Remove the upper and lower caps by using a flat screwdriver, and remove 2 screws. (Figure 17)

2. Disconnect the lead wire on the bottom position.

Figure 14

Figure 18

- 8 -

3-8 HOW TO REMOVE AND REINSTALL THE PULL OUT DRAWER 3-8-1 FOLLOW STEPS TO REMOVE

Step 1) Open the freezer door.

Step 3) Remove the two screws from the guide rails (one

from each side).

Step 2) Remove the lower basket.

Step 4) Lift the freezer door up to unhook it from the rail

support and remove. Pull both rails to full extension.

Step 5) First: Remove the gear from the left side first by releasing the tab behind the gear, place a screwdriver between the

gear and the tab and pull up on the gear. Second: Remove the center rail. Third: Remove the gear from the right side by following the same steps for the left side.

NOTE: THIS TAB MUST BE PUSHED IN TO RELEASE THE GEAR.

- 9 -

3-8-2 FOLLOW STEPS TO REINSTALL

Step 1) Reinstall the right side gear into the clip.

Step 2) Insert the rail into the right side gear. Gears do not

need to be perpendicular to each other.

Step 4) The rail system will align itself by pushing the rails

all the way into the freezer section. Pull the rails back out to full extension.

Step 3) Insert the rail into the left side gear, and insert the

gear into the clip.

Step 5) Reinstall the freezer door by inserting the rail tabs

into the guide rail.

Step 6) Reinstall the two screws into the guide rails

(one from each side).

Step 7) Reinstall the lower basket, and close the freezer

door.

- 10 -

3.8.3 GLIDE OUT DRAWER BASKET

To remove, lift basket up and pull out straight out.

2.1.To Install, pull both rails out to full extension.

Hook the basket supports into the rail tabs and push to the back of compartment.

- 11 -

3-9 Cover Valve

- Disassemble

1. Push to inside the cover valve.

- Assemble

1. Insert the cover valve as shown in the picture, push to insert (may need force).

2. Push to the right and release.

3. Release hook a & b

4. Turn the cover valve 120° as shown in the picture, then release it.

2. Insert hook a & b

3. Push to the right to insert the cover valve.

4. Then push to inside to assembly.

- 12 -

4. COMPRESSOR ELECTRICAL

4-1 COMPRESSOR 4-1-1 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.

4-1-2 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 and moisture-free environment, use extreme caution when repairing it.

4-1-3 Note for Usage

(1) Be careful not to allow over-current. (2) If compressor is dropped or handled carelessly, poor operation and noise may result. (3) Use proper electric components appropriate to the particular compressor in your product. (4) Keep compressor dry. If the compressor gets wet (in the rain or a damp environment) and rust forms in the pin of the Hermetic Terminal, poor operation and contact may result. If the hermetic connector rusts out or fails, refrigerant and oil will be expelled into the contact area, probably resulting in smoke and fire. (5) When replacing the compressor, be careful that dust, humidity, and soldering flux don´t contaminate the inside of the compressor. Contamination in the cylinder may cause noise, improper operation or even cause it to lock up.

4-2 PTC-STARTER/ COMBO 4-2-1 Composition of PTC- Starter

4-2-4 Role of Combo TSD

(1) The combo is attached to the sealed compressor and is used for the operation and protect the motor. (2) The compressor is a single phase induction motor. During the starting and operation, the combo allows current flow to both the start and main winding.

4-2-5 PTC/Combo - Applied Circuit Diagram Starting Method for the Motor

PTC DIAGRAM

OVERLOAD PROTECTOR

PTC

Resistance Starter Capacitor Running

PTC STARTER

COMPRESSOR MOTOR

SEALED TERMINAL

COMBO DIAGRAM

COMPRESSOR MOTOR

SEALED TERMINAL

T R

PTC

OLP

LINE

(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.

4-2-2 Role of PTC-Starter

(1) The PTC is attached to the Sealed Compressor and is used for starting the motor. (2) The compressor is a single-phase induction motor. During the starting operation, the PTC allows current flow to both the start winding and main winding.

4-2-3 Combo TSD

TSD (Time Starting Device) is a new electronic starting system for high efficiency compressors due to the following characteristics: (1) Combo concept-overload protector, electronic board and cover in a single casing. (2) Fully electronic concept. (3) Full integration of starting and protection devices. (4) Free from mechanical and electromagnetic noises.

- 13 --

4-2-6 Motor Resarting and PTC/ Combo Cooling

(1) It requires approximately 5 minutes for the pressure to equalize before the compressor can restart. (2) The PTC/Combo device generates hea during operation. Therefore, it must be allowed to cool before the compressor can restart.

4-2-7 Relation of PTC-Starter / Combo and OLP

(1) If the compressor attempts to restart before the PTC/Combo device is cooled, the PTC/Combo device will allow current to flow only to the main winding. (2) The OLP will open because of the over current condition. Thissame process will continue (3 to 5 times) when the compressor attempts to restart until the PTC/Combo device has cooled. The corret OLP must be properly attached to prevent damage to the compressor. Parts may appear physically identical but could have different electrical ratings. Replace parts by part number and model number. Using an incorrect part could result in damage to the product, fire, injury, or possibly death.

4-2-8 Note for using the PTC-Starter / Combo

(1) Be careful not to allow over-voltage and over-current (2) Do not drop or handle carelessly. (3) Keep away from any liquid. If liquid such as oil or water enters the PTC/Combo, PTC/Combo materials may fail due to breakdown of their insulating capabilities. (4) If the exterior of the PTC/Combo is damaged, the resistance value may be altered. This can cause damage to the compressor and result in a no-start or hard-to-start condition. (5) Always use the PTC/Combo designed for the compressor and make sure it is properly attached to the compressor. Parts may appear physically identical but could have different electrical ratings. Replace parts by part number and model number. Using an incorrect part could result in damage to the product, fire, injury, or possibly death.

4-3 OLP (OVERLOAD PROTECTOR) 4-3-1 Definition of OLP

(1) OLP (OVERLOAD PROTECTOR) is attached to the compressor and protects the motor by opening the circuit to the motor if the temperature rises activating the bimetal spring in the OLP. (2) When high current flows to the compressor motor, the bimetal wors by heating the heater inside the OLP, and the OLP protects the motor by cutting off the current flowing to the compressor motor.

4-3-2 Role of the OLP

4-4 TO REMOVE THE COVER PTC (only if applies)

(1) Remove the cover Back M/C. (2) Disconnect two housing upper side of comp connected in. (3) Loosen two screws on comp base.

(4) Use a L-shaped flap tool to pry off the cover. (5) Assembly in reverse order of disassembly.

4-5 TO REMOVE THE COMBO (only if applies)

(1) The OLP is attached to the sealed compressor used for the refrigerator. It prevents the motor coil from being started in the compressor.} (2) For normal operation of the OLP, do not turn the adjust screw of the OLP in anyway.

(OVERLOAD PROTECTOR cross section)

Customer part number

12345678

Lot code/ date code

Physical

termination part number

Electrical

characteristics

part number

330 FBYY -S1 BOX98

(1) Remove the cover Back M/C. (2) Disconnect two housing upper side of comp connected in. (3) Loosen two screws on comp base. (4) Use a flat screwdriver to take off the clip from the lower side. (5) Take the combo off. (6) To assembly the side with the “U” form is hooked in the central part of the compressor base. (7) Press the “A” point and lift the “B” point to hook to compressor.

(5) (5) (5)

111

- 14 -

222

333

5. CIRCUIT DIAGRAM

PWB(PCB) ASSEMBLY,DISPLAY-R

CON102

/BK

/RD

/WH

CON101

/BK

/RD

/BK

5 3

CON5

CON6

/WH

PWB(PCB) ASSEMBLY, MAIN

FUSE1

POWER

SUPPLY

CORD

CON1

N L

GN/YL

(GN)

ICE MAKER PART

GN/YL

(GN)

SHEATH

HEATER,

ICE SENSOR

WH 2

CON5

CON4

CON3

CON2

PWB (PCB) ASSEMBLY, ICE MAKER

*PLUG TYPE, ICE MAKER PART, CAPACITOR PART,

P.T.C START OPTION, DOOR S/W-R REPRESENTS TWO SWITCHES CONNECTED IN CON2 TERMINALS 1 AND 3, COMP' EARTH PART AND COMP' ACCESSORIES ON CIRCUIT DIAGRAM ARE SUBJECTED TO CHANGE IN DIFFERENT LOCALITIES AND MODEL TYPE.

FUSE-M

(98 C)

MOTOR

ICE MAKER

BL 2

CON1

S/W

I/MAKER

POWER

BK 1

CON6

W/VALVE

RD 1

COMP' ACCESSORIES

CON2

CAPACITOR PART

PTC STARTER

* ALTERNATIVE COMP' ACCESSORIES

COMBO KIT(PTC+OLP)

(GN)

STEPPING

F-FAN

MOTOR

CON3

/YL

CON8

3 4

CON7

3 4

5 6

WH BL

com

DOOR S/W-F

FUSE-M

(72 C)

HEATER,SHEATH

RT-SENSOR

R-DOOR

PERCEPTION S/W

F-DOOR

PERCEPTION S/W

DEF-SENSOR

R-SENSOR

F-SENSOR

com

DOOR S/W-R

FRENCH DOOR HEATER

F-LAMP

THERMOSTAT

R-LAMPS

OLP

* P.T.C START OPTION

MC,MQ COMP'

EG COMP'

C-FAN

CON4

OLP

COMP' EARTH

PART

PTC

BK:BLACK YL:YELLOW

WH:WHITE PK:PINK

BN:BROWN GN:GREEN

- 15 -

BO:BRIGHT ORANGE PR:PURPLE

SB:SKY BLUE GY:GREY

RD:RED BL:BLUE

6. TROUBLESHOOTING

6-1 COMPRESSOR AND ELECTRIC COMPONENTS

Power Source.

Check

Check resistance

resistance of

of motor

motor

compressor.

Remove PTC-Starter/Combo from compressor and measure voltage between Terminal C of compressor and

terminal 5 or 6 of PTC/Combo

No voltage.

Applied voltage isn't in acceptable range. (115V ±10%)

Check the resistance between M-C, S-C and M-S in motor compressor. Check each pin to ground.

(Rated voltage ±10%)?

OLP disconnected?

Advise customer that

power supply needs to be checked by an electrician.

Open or short

or short to ground

Replace compressor

YES

The resistance between pins should be between 1 and 50 ohms. The resistance to ground should be infinite.

Replace OLP.

Check connection condition.

Reconnect.

Check resistance of PTC-Starter.

Check OLP.

Check starting state.

Check resistance of

PTC-Starter/ Combo

Check resistance of two terminals in OLP.

Check the power supply under load. (Compressor attempting to re-start after being off for 5 minutes).

Check resistance of two terminals in PTC/Starter/Combo

Refer to Page 13.

Supply voltage rating with ±10%.

YES

Did

compressor

start?

YES

Compressor is OK

Replace the compressor

- 16 -

6-2 PTC/COMBO AND OLP

Normal operation of compressor is impossible or poor.

Separate PTC-Starter/Combo from Compressor and measure resistance

between No. 5 and 6 of PTC-Starter with a Tester. (Figure 19a and 19b)

Separate OLP from compressor and check resistance value between two terminals of OLP with a tester. (Figure 20)

Observation value is 115V/60Hz : 6.8 ±30%

at room temperature

The resistance value is 0 (short) or 8(open).

Shows continuity

Open

Check another electric component.

Replace OLP.

PTC/Combo OK

Replace PTCStarter/Combo

OLP OK

Figure 19a

Figure 20

Figure 19b

- 17 -

6-3 OTHER ELECTRICAL COMPONENTS

•Not cooling at all

Compressor

doesn't run

•Poor cooling performance

Compressor runs poorly.

Check for open short or incorrect resistance readings in the following components

a. Starting devices b. OLP

c. Compressor coil d.Wiring harness

Check starting voltage.

Check voltage at starting devices.

Cause

Short, open, or broken.

Poor contact or shorted.

Coil open or shorted. Poor contact

or shorted.

Low voltage.

Poor or broken or open contact.

Replace indicated component.

Advise customer that the power supply

needs to be checked

by an electrician.

Replace indicated component.

Fan motor doesn't run.

Heavy frost buildup on evaporator

Check current flowing

In run winding of

Compressor.

Check rating of OLP.

OLP: 4TM319NFBYY Temp. 120°C

Check wiring circuit.

13 - 15 V

Check Fan Motor .

Check current flow in the following components: Sensor Fuse-M

Check resistance flow in

the defrost heater.

Shorted.

Lack of capacity.

Wire is open or shorted.

Coil is shorted or open.

Open.

Replace indicated component.

Replace defrost heater.

- 18 -

6-4 SERVICE DIAGNOSIS CHART

COMPLAINT POINTS TO BE CHECKED REMEDY

No Cooling.

Cools poorly.

Food in the Refrigerator is frozen.

Condensation or ice forms inside the unit.

Condensation forms On the Exterior Case.

There is abnormal noise.

•Is the power cord unplugged from the outlet?

•Check if the power switch is set to OFF.

•Check if the fuse of the power switch is open.

•Measure the voltage of the power outlet.

•Check if the unit is placed too close to the wall.

•Check if the unit is placed too close to the stove, Gas cooker, or in direct sunlight.

•Is the ambient temperature too high or the room door closed?

•Check if food put in the refrigerator is hot.

•Did you open the door of the unit too often or check if the door is sealed properly?

•Check if the Control is set to Warm position Is food placed in the cooling air outlet?

•

Check if the control is set to colder position . Is the ambient temperature below 5° C (41°F)?

•

Is liquid food sealed?

•

Check if food put in the refrigerator is hot.

•

Did you open the door of the unit too often or check if the door is sealed properly?

•

Check if the ambient temperature and humidity

of the surrounding air are high.

Is there a gap in the door gasket?

• Is the unit positioned in a firm and even place?

•

Is it properly installed?

Are any unnecessary objects placed

• Beside side of the unit?

•

Check if the Drip Tray is not firmly attached.

•

Check if the cover of the compressor enclosure

Is lose.

Plug into the outlet.

•

Set the switch to ON.

•

Replace the fuse.

•

If the voltage is low, correct the wiring.

•

Place the unit about 4 inches (10 cm) from the wall.

•

Place the unit away from these heat sources.

•

Lower the ambient temperature.

•

Put in foods after they have cooled down. Don't open the door too often and close

• it firmly.

•

Set the control to Recommended position

•

Place foods in the high-temperature section.

(front part)

•

Set the control to Recommended position

Set the control to

• Seal liquid foods with wrap.

•

Put in foods after they have cooled down. Don't open the door too often and close

•

It firmly.

Wipe moisture with a dry cloth. It will disappear

• in low temperature and humidity.

•

Repair or replace the gasket as needed.

Adjust the leveling screw, and position the

• refrigerator in a firm place.

•

Remove the objects.

•

Fix the drip tray firmly in the original position.

Place the cover in its original position.

•

Warm position

Door does not close well.

Ice and foods smell unpleasant.

•Other possible problems:

Freezer or evaporator is full of frost

Check the refrigeration system.

•

Check if the door gasket is dirty with

an item like juice.

Is the refrigerator level?

• Is there too much food in the refrigerator?

•

Check if the inside of the unit is dirty.

•

Are foods with a strong odor unwrapped?

•

The unit smells of plastic.

Not defrosting

The system is faulty.

•

Clean the door gasket.

Position in a firm place and level the

• leveling screw.

•

Make sure food stored in shelves does not prevent

the door from closing.

•

Clean the inside of the unit.

•

Wrap foods that have a strong odor. New products smell of plastic, but this

• will go away after 1-2 weeks.

Check components of the defrosting circuit.

Perform sealed system repair.

- 19 -

6-5 REFRIGERATION CYCLE

* Troubleshooting Chart

CAUSE

PARTIAL LEAKAGE

LEAKAGE

COMPLETE LEAKAGE

R E S

CLOG

T R

I T

CLOG

MOISTURE RESTRICTION

LOW

COMPRESSION

COMPRE-

SSION

STATE OF

THE UNIT

Freezer compartment and refrigerator don’t cool normally

Freezer compartment and refrigerator don’t cool.

Cooling operation stops periodically.

Freezer and refrigerator don’t cool.

No compressing operation.

STATE OF THE

EVAPORATOR

Low flowing sound of refrigerant is heard and frost forms in inlet only.

Flowing sound of refrigerant is not heard and frost isn’t formed.

Flowing sound of refrigerant is heard and frost forms in inlet only.

Flowing sound of refrigerant is not heard and frost isn’t formed.

Flowing sound of refrigerant is not heard and frost melts.

Low flowing sound of refrigerant is heard and frost forms in inlet only.

Flowing sound of refrigernat is not heard and there is no frost.

TEMPERATURE

OF THE

COMPRESSOR

A little higher than ambient temperature.

Equal to ambient temperature.

A little higher than ambient temperature.

Equal to ambient temperature.

Lower than ambient temperature.

Alittle higher than ambient temperature.

Equal to ambient temperature

REMARKS

- Refrigerant level is low due to a leak.

- Normal cooling is possible by restoring the normal amount of

refrigerant and repairing the leak.

- No discharging of refrigerant.

- Normal cooling is possible by restoring the normal amount of

refrigerant and repairing the leak.

- Normal discharging of the refrigerant.

- The capillary tube is faulty.

- Normal discharging of the refrigerant.

- Cooling operation restarts when heating the inlet of the capillary

tube.

- Low pressure at high side of compressor due to low

refrigerant level.

- Nopressure in the high pressure part of the compressor.

¥ ¥

- 20 -

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