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

...

0 (0)

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

www.sears.com

BOTTOM FREEZER REFRIGERATOR

ENGLISH

REFRIGERATOR

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE PRODUCT

READ THE SAFETY PRECAUTIONS IN THIS MANUAL

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

CONTENTS

-2-

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.

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

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.

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.

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

Minimum Equalized Pressure

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

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

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

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

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

ELECTRIC AL SP E CIFIC ATION S

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

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

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

Control Po sitio n : MID/M ID

And Ambient of: 70°F

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

33°F

41°F

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

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

90°F

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

-4°F to +4°F

25%-35%

45%-60%

33°F to 41°F

-4°F to +4°F

...

1-1 DISCONNECT POWER CORD BEFORE SERVICING IMPORTANT:

RECONNECT ALL GROUNDING DEVICES.

1-2 IMPORTANT NOTICE

1.3

1-4 NO LOAD PERFORMANCE

1-5 REFRIGERATION SYSTEM

1-6 INSTALLATION

1. SPECIFICATIONS

- 3 -

Freezer Temperature Control (Middle setting)

EVAPORATOR

EVAPORATOR FAN

DRYER

HOT LOOP

COMPRESSOR

CONDENSER

CONDENSER FAN

FRESH FOOD

FREEZER

Vegetable box

COLD AIR

MIXED AIR

AIR RETURN TO

EVAPORATOR

PERFORMANCE DATA

(NORMAL OPERATING CONDITIONS)

SYSTEM PRESSURE (PSIG)

HIGH SIDE LOW SIDE

AMB WATTS

(-4) to 1

(-5) to (-2)

(-2) to 3

132 (+3 / -3)

98 (+5 / -3)

180 (+5 / -5)

98 (+10 / -10)

103 (+5 / -5)

90°F

70°F

110°F

1-7 REPLACEMENT PARTS

1-8 AIR FLOW / CIRCULATION D’AIR.

- 4 -

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

2. PARTS IDENTIFICATION

- 5 -

Ice Bin

Durabase

Divider

Modular Door Bins

Can Rack*

*On some models

Egg Box

Glide-Out Drawer Basket

Freezer Light

Dairy Corner

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

Snack Pan

Refrigerator Light

Refrigerator Shelves

Supra Fresh Crisper with Tilt-Out Compartment

Adjusta Cube Ice Maker

3-1 DOOR

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.

3. Remove gasket

Pull gasket free from gasket channel on the three

remaining sides of door.

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.

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.

3. DISASSEMBLY

- 6 -

Frame Cover

Handle

Gasket

Door

Bracket Clip

Frame

Flat Tip

Screwdriver

Gasket

Bracket

Figure 3

Figure 2

Figure 1

Figure 4

Gasket

Bracket Clip

Spring

Door

Frame

Correct Incorrect

Figure 5

Door Gasket Removal

1. Remove door frame cover

Starting at top of cover and working down, snap cover

out and away from door.

(3)

(1)

(4)

(1)

(2)

(3)

(4)

(5)

(2)

(6)

? 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.

2. Insert gasket into channel

1) Snap gasket assembly into the door bracket.

Inserting the Gasket Assembly into the Bracket Door.

2) Press gasket into channel on the three remaining

sides of door.

3. Replace door frame cover

Starting at top of cover and working down, snap the cover

back into door.

3-2 DOOR ALIGNMENT

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

3. Insert additional snap rings until the doors are aligned.

(Three snap rings are provided with the product.)

- 7 -

Figure 6

Correct

Incorrect

Figure 7

Figure 8

Figure 9

middle hinge as shown.

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.

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.

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)

3-5 LAMP

3-5-1 Refrigerator Compartment Lamp

3-5-2 Freezer Compartment Lamp

3-6 REFRIGERATOR CONTROL BOX

1. First, remove all shelves in the refrigerator, than remove

the Refrigerator control Box by loosening 2 screws.

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.

- 8 -

GRILLE ASSEMBLY

Figure 12

DEFROST-CONTROL

ASSEMBLY

Figure 13

Figure 14

Figure 15

CONTROL BOX

COVER LAMP

Figure 17

Figure 18

GRILLE

FAN MOTOR

FAN

BRACKET

MOTOR

Figure 11

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

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

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.

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.

Figure 16

1111

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

3-8-1 FOLLOW STEPS TO REMOVE

- 9 -

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.

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 6) Reinstall the two screws into the guide rails

(one from each side).

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 7) Reinstall the lower basket, and close the freezer

door.

- 10 -

- 11 -

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

3.8.3 GLIDE OUT DRAWER BASKET

To Install, pull both rails out to full extension.

Hook the basket supports into the rail tabs and push to

the back of compartment.

3-9 Cover Valve

- Disassemble

1. Push to inside the cover valve.

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.

- Assemble

1. Insert the cover valve as shown in the picture, push to

insert (may need force).

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

- 13 --

PTC STARTER

SEALED

TERMINAL

COMPRESSOR

MOTOR

PTC

OVERLOAD PROTECTOR

Resistance Starter Capacitor Running

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

(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.

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

COMBO DIAGRAM

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.

SEALED

TERMINAL

COMPRESSOR

MOTOR

T R

LINE

PTC

OLP

- 14 -

Customer part

number

Lot code/

date code

330 FBYY -S1 BOX98

12345678

Physical

termination

part number

Electrical

characteristics

part number

(OVERLOAD PROTECTOR cross section)

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

(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.

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) 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

222

333

5. CIRCUIT DIAGRAM

- 15 -

DOOR S/W-R

/WH

CON1

CON7

/BK

CON2

YL:YELLOW

SB:SKY BLUE

EG COMP'

BL:BLUE

DOOR S/W-F

PWB (PCB) ASSEMBLY, ICE MAKER

COMP' EARTH PART AND COMP' ACCESSORIES ON CIRCUIT

F-DOOR

FUSE-M

BK:BLACK

POWER

STEPPING

F-LAMP

COMBO KIT(PTC+OLP)

/RD

RT-SENSOR

GN/YL

W/VALVE

CON8

(GN)

/BK

GN:GREEN

FRENCH DOOR HEATER

BO:BRIGHT ORANGE

DIAGRAM ARE SUBJECTED TO CHANGE IN DIFFERENT

CON101

(GN)

THERMOSTAT

/WH

CON102

WH:WHITE

ICE MAKER PART

PERCEPTION S/W

POWER

ICE SENSOR

ICE MAKER

OLP

MC,MQ COMP'

/YL

CON5

R-SENSOR

C-FAN

COMP' ACCESSORIES

OLP

CON5

CON1

* P.T.C START OPTION

CON6

(GN)

PTC STARTER

CAPACITOR PART

/BK

F-SENSOR

5 3

TWO SWITCHES CONNECTED IN CON2 TERMINALS 1 AND 3,

FUSE-M

BN:BROWN

(GN)

R-LAMPS

com

HEATER,SHEATH

HEATER,

COMP' EARTH

R-DOOR

RD:RED

S/W

SHEATH

/YL

MOTOR

DEF-SENSOR

/BK

MOTOR

PTC

PR:PURPLE

/RD

CON4

CON6

SUPPLY

PART

(72 C)

com

CAPACITOR PART

* ALTERNATIVE COMP' ACCESSORIES

*PLUG TYPE, ICE MAKER PART, CAPACITOR PART,

PWB(PCB) ASSEMBLY, MAIN

P.T.C START OPTION, DOOR S/W-R REPRESENTS

(98 C)

PK:PINK

PERCEPTION S/W

PART

FUSE1

com

F-FAN

OLP

GY:GREY

CON3

CON2

GN/YL

CON4

I/MAKER

COMP' EARTH

com

CORD

PWB(PCB) ASSEMBLY,DISPLAY-R

CON3

LOCALITIES AND MODEL TYPE.

6. TROUBLESHOOTING

- 16 -

6-1 COMPRESSOR AND ELECTRIC COMPONENTS

YES

Open or short

YES

Power Source.

No voltage.

(Rated voltage

±10%)?

Replace OLP.

Reconnect.

Check resistance of

two terminals in

PTC/Starter/Combo

Did

compressor

start?

Compressor

is OK

Replace the

compressor

Check connection

condition.

OLP disconnected?

Advise customer that

power supply needs to be

checked by an electrician.

Supply

voltage rating

with ±10%.

Applied voltage isn't

in acceptable range.

(115V ±10%)

Remove PTC-Starter/Combo

from compressor and

measure voltage

between Terminal C of

compressor and

terminal 5 or 6 of PTC/Combo

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

PTC-Starter.

Check OLP.

Check

starting state.

Check resistance

of motor

compressor.

Replace

compressor

Refer to Page 13.

Check

resistance of

motor

compressor.

The resistance between pins should be

between 1 and 50 ohms. The resistance to

ground should be infinite.

or short to

ground

Check the resistance

between M-C, S-C and M-S

in motor compressor.

Check each pin to ground.

- 17 -

6-2 PTC/COMBO AND OLP

Shows continuity

Open

Separate PTC-Starter/Combo

from Compressor and

measure resistance

between No. 5 and 6

of PTC-Starter with a

Tester.

(Figure 19a and 19b)

Observation value is

115V/60Hz : 6.8 ±30%

The resistance value

is 0 (short) or

8(open).

Check another

electric component.

Replace OLP.

Replace PTC-

Starter/Combo

Normal operation of

compressor is impossible

or poor.

Separate OLP from

compressor and check

resistance value between

two terminals of OLP with a

tester.

(Figure 20)

at room temperature

PTC/Combo OK

OLP OK

Figure 19a

Figure 19b

Figure 20

- 18 -

•Not cooling at all

•Poor cooling performance

Compressor

doesn't run

Compressor runs

poorly.

Check starting

voltage.

Check for open short or

incorrect resistance readings

in the following components

a. Starting devices

b. OLP

c. Compressor coil

d.Wiring harness

Low voltage.

Short, open, or broken.

Poor contact

or shorted.

Coil open or shorted.

Poor contact

or shorted.

Poor or broken or

open contact.

Shorted.

Lack of capacity.

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 run winding of

Compressor.

Check rating of OLP.

Fan motor

doesn't run.

Wire is open or

shorted.

Coil is shorted

or open.

Open.

Replace

defrost heater.

Replace

indicated component.

Replace

indicated component.

Check wiring circuit.

Check Fan Motor .

Check current flow in

the following

components:

Sensor

Fuse-M

Check resistance flow in

the defrost heater.

6-3 OTHER ELECTRICAL COMPONENTS

Heavy frost buildup on

evaporator

13 - 15 V

OLP: 4TM319NFBYY

Temp. 120°C

6-4 SERVICE DIAGNOSIS CHART

- 19 -

COMPLAINT POINTS TO BE CHECKED REMEDY

•Other possible problems:

Check components

of the defrosting

circuit.

Check the

refrigeration system.

Not

defrosting

The system

is faulty.

Perform sealed

system repair.

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.

Door does not

close well.

Ice and foods

smell unpleasant.

•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?

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.

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.

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

Warm position

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.

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.

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.

Is it properly installed?

Freezer or evaporator

is full of frost

Repair or replace the gasket as needed.

•

6-5 REFRIGERATION CYCLE

- 20 -

* Troubleshooting Chart

CAUSE

TEMPERATURE

OF THE

COMPRESSOR

REMARKS

STATE OF

THE UNIT

STATE OF THE

EVAPORATOR

LEAKAGE

PARTIAL

LEAKAGE

Freezer

compartment and

refrigerator don’t

cool normally

COMPLETE

LEAKAGE

CLOG

COMPRE-

SSION

Freezer

compartment and

refrigerator don’t

cool normally

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.

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.

A little higher than

ambient

temperature.

- Refrigerant level is low due to a

leak.

- Normal cooling is possible by

restoring the normal amount of

refrigerant and repairing the leak.

Equal to ambient

temperature.

- No discharging of refrigerant.

- Normal cooling is possible by

restoring the normal amount of

refrigerant and repairing the leak.

A little higher than

ambient

temperature.

- Normal discharging of the

refrigerant.

- The capillary tube is faulty.

Equal to ambient

temperature.

- Normal discharging of the

refrigerant.

Lower than ambient

temperature.

- Cooling operation restarts when

heating the inlet of the capillary

tube.

Alittle higher than

ambient

temperature.

- Low pressure at high side of

compressor due to low

refrigerant level.

Equal to ambient

temperature

- Nopressure in the high pressure

part of the compressor.

MOISTURE

RESTRICTION

LOW

COMPRESSION

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