Kenmore 795.77253.600, 795.77252.600, 795.77249.600, 795.77244.600, 795.77243.600 Service Manual

R

BOTTOM FREEZER REFRIGERATOR

REFRIGERATOR

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE PRODUCT

READ THE SAFETY PRECAUTIONS IN THIS.MANUAL

ENGLISH

795.77242.600/601/602

795.77243.600/601/602

795.77244.600/601/602

795.77249.600/601/602

795.77252.600/601/602

795.77253.600/601/602

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

www.sears.com

CONTENTS

SAFETY PRECAUTIONS ..........................................................................................................	2
1. SPECIFICATIONS ..................................................................................................................	3
2. PARTS IDENTIFICATION .......................................................................................................	5
3. DISASSEMBLY ......................................................................................................................	6
3.1 Door ..................................................................................................................................	6
3.2 To remove the dispenser ....................................................................................................	7
3.3 Fan and fan motor ..............................................................................................................	8
3.4 Defrost control assembly ...................................................................................................	8
3.5 Lamp .................................................................................................................................	8
3.6 Refrigerator control box .....................................................................................................	8
3.7 Multi duct ...........................................................................................................................	8
3.8 How to remove and reinstall the pullout drawer ...................................................................	9
3.9 Cover Valve .......................................................................................................................	12
4. COMPRESSOR ELECTRICAL .............................................................................................	13
4.1 Compressor ......................................................................................................................	13
4.2 PTC-Starter .......................................................................................................................	13
4.3 OLP (overload protector) ...................................................................................................	14
4.4 To remove the cover PTC ...................................................................................................	14
5. CIRCUIT DIAGRAM ...............................................................................................................	15
6. TROUBLESHOOTING ...........................................................................................................	16
6.1 Compressor and electrical components .............................................................................	16
6.2 PTC and OLP .....................................................................................................	17
6.3 Other electrical components ..............................................................................................	18
6.4 Service diagnosis chart ......................................................................................................	19
6.5 Refrigeration cycle .............................................................................................................	20
7. ICEMAKER OPERATING PRINCIPLES AND REPAIR ..........................................................	22
7.1 Operation Principle ............................................................................................................	22
7.2 Ice maker functions ............................................................................................................	23
7.3 Defect diagnosis function ...................................................................................................	24
8. WATER FILTER ......................................................................................................................	25
8.1 Water filter cartridge replacement ......................................................................................	25
8.2 Water dispenser (on some models) ....................................................................................	26
9. DESCRIPTION OF FUNCTION & CIRCUIT OF MICOM .........................................................	27
9.1 Function ............................................................................................................................	27
9.2 PCB function .....................................................................................................................	32
9.3 Resistance specification of sensor .....................................................................................	40
9.4 Troubleshooting ................................................................................................................	41
9.5 Main PWB assembly and parts list .....................................................................................	43
9.6 PWB diagram ....................................................................................................................	45
10. EXPLODED VIEW AND REPLACEMENT PART LIST .........................................................	47
795.772**.600 ......................................................................................................................	53
795.772**.601 .......................................................................................................................	59
795.772**.602 .......................................................................................................................	65

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't touch metal products in the freezer with wet Hands.This may cause frost bite.

6.Prevent water from spiling on to electric elements 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 backgrounds 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.

1.3 ELECTRICAL SPECIFICATIONS

Temperature Control (Position:M ID) …………………..………………………………………....-6ºF to +8ºF Defrost Control …………………………………………………………………...……………….…Automatic

Defrost Thermostat …………………………………………………………………….…………….……50ºF

Electrical Rating: 115VAC, 60HZ …………………………………………………….……………….…..1-5A Maximum Current Leakage ……………………………………………………………….……….……0.5mA

Maximum Ground Path Resistance ……………………………………………………...………..0.14Ohms Energy Consumption …………………………………………………...…..22cuft 493kWh/yr (Energy Star)

1-4 NO LOAD PERFORMANCE

Control Position: MID/MID

And Ambient of:	70°F	90°F
Fresh Food, °F...............................................................	33°F to 41°F ......................................................................................	33°F to 41°F
Frozen Food, °F..............................................................	-4°F to +4°F ......................................................................................	-4°F to +4°F
Percent Running Time........................................................	25%-35% .......................................................................................	....45%-60%

1-5 REFRIGERATION SYSTEM		1-6 INSTALLATION
Minimum Compressor Capacity Vacuum	...................................21 in	Clearance must be provided at top, sides and rear of the refrigerator
Minimum Equalized Pressure	49PSIG	for air circulation.
@70°F......................................................................		AT TOP	1 in
@90°F......................................................................	56PSIG
Refrigerant R134a.................................................................	4 . 2 oz	AT SIDES..................................................................................	1/8 in
Compressor ...................................................................	700 BTU/hr	AT REAR.......................................................................................	1 in

- 3 -

PERFORMANCE DATA

(NORMAL OPERATING CONDITIONS)

	AMB	WATTS		SYSTEM PRESSURE (PSIG)
				HIGH SIDE	LOW SIDE
	70°F	98 (+10	/ -10)	98 (+5 / -3)	(-5) to (-2)
	90°F	98 (+10	/ -10)	132 (+3 / -3)	(-4) to 1
	110°F	103 (+5	/ -5)	180 (+5 / -5)	(-2) to 3

1-7 REPLACEMENT PARTS

Relay ...........................................	EBG32606502
Overload .......................................	6750C-0004S
Defrost Thermostat .......................	6615JB2005C
Defrost Heater ...............................	5300JB1100J
Evaporator fan motor ....................	4681JK1004A
Capacitor ......................................	0CZZJB2012J
Compressor (Hi-Side) ..................	2521CRA5715
Evaporator (Lo-Side) .....................	5421JJ1001B
Condenser ....................................	5403JJ1007A
Dryer...............................................	5851JJ2002F
Condenser fan motor ....................	4681JB1029J
Temperature Control .....................	6871JB1439A
Main Control ..................................	6871JK1011A

1-8 AIR FLOW / CIRCULATION D’AIR.

EVAPORATOR

VAPORATOR FAN

HOT LOOP

DRYER

CONDENSER FAN

COMPRESSOR CONDENSER

FRESH FOOD

COLD AIR

MIXED AIR

AIR RETURN TO

Vegetable box

EVAPORATOR

FREEZER

M

A

- 4 -

2. PARTS IDENTIFICATION

		P
	A
	B	O
	C	N
		M
	D
	E	L
	F	K
	G
	H	J
	I

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.

	A	Cool Sense Electronic Temperature	J	Glide-Out Drawer Basket
		Control System	K	Freezer Light
	B Refrigerator Light
			L	Modular Door Bins
	C Refrigerator Shelves
			M Egg Box
	D Snack Pan
			N Can Rack*
	E Supra Fresh Crisper with Tilt-Out Compartment
			O Dairy Corner
	F Adjusta Cube Ice Maker
			P Filter
	G	Ice Bin
	H Durabase
	I	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 (3).

Loosen hinge bolts (4).

Loosen ground screw (5).

Lift off the top hinge (6).

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

		4
		6
	5
	3
Left	Right
	A
		3
	Figure	A
	Figure 1
		- 6-

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

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.

Gasket

Door Bracket Clip

Frame

Figure 3

Flat Tip

Screwdriver

Gasket

Bracket

3.Remove gasket

Pull gasket free from gasket channel on the three remaining sides of door.

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

Correct

Incorrect

Figure 5

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.

2. Insert gasket into channel

1) Snap gasket assembly into the door bracket.

Inserting the Gasket Assembly into the Bracket Door.

Correct

Incorrect

Figure 6

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 8

3-2 TO REMOVE THE DISPENSER

1.Use fiat tip screwdriver to pry back hooks on botton underside of cover dispenser.

Figure 9

2. Pry off cover dispenser.

Figure 10

Disconnect wire harness.

3.Replace cover dispenser in opposite manner and order of removal.

- 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

FAN

Figure 11

GRILLE

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

DEFROST-CONTROL

ASSEMBLY

Figure 12

Figure 13

3-5 LAMP

Figure 14

3-5-1 Refrigerator Compartment Lamp

1.Unplug Refrigerator, or disconnect power at the circuit breaker.

2.If necessary, remove top shelf or 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.Assembly is the reverse of disassembly. Replacement bulb must be the same specification as the original (Max. 60 W, 2 EA).

Figure 15

3-5-2 Freezer Compartment Lamp

1.Unplug Refrigerator, or disconnect power at the circuit breaker.

2.Release the hooks at back of light cover and pull the cover down to remove it. (Figure 15)

3.Turn the lamp counterclockwise.

4.Assembly is in the reverse order.

Replacement bulb must be the same specification as the original. (Max 60W)

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 16

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 17

- 8 -

3-8 HOW TO REMOVE AND REINSTALL THE PULLOUT DRAWER

3-8-1 FOLLOW STEPS TO REMOVE

Step 1) Open the freezer door.

Step 2) Remove the lower drawer.

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

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 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 drawer, and close the freezer door.

- 10 -

3.8.3 GLIDE -OUT DRAWER BASKET

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

1

2

2.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	- Assemble
- Disassemble

1. Push to inside the cover valve.

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

a

b

2. Push to the right and release.

a		b

2. Insert hook a & b

3. Release hook a & b						3. Push to the right to insert the cover valve.

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

4. Then push to inside to assembly.

- 12 -

4. COMPRESSOR ELECTRICAL

4-1 COMPRESSOR	4-2-3 PTC-Applied Circuit Diagram
4-1-1 Role	. Starting Method for the Motor

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-voltage and 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

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. Durign the starting operation, the PTC allows current flow to both the start winding and main winding.

3) As the compressor starts, the current through the PTC causes its temperature to rise, and so the resistance also rises. When the resistance reaches a high enough level, only a trickle current will be running through the start winding. This small current then keeps the PTC hot and the resistance high.

OVERLOAD PROTECTOR
N	C
PTC	5	COMPRESSOR
2		MOTOR
	S	M	M
3	6	S
L1
PTC STARTER		SEALED
Resistance Starter Capacitor Running		TERMINAL

Figure 17

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-Starter and OLP

(1)If the compressor attempts to restart before the PTC device is cooled, the PTC device will allow current to flow only to the main winding.

(2)The OLP will open because of the overcurrent condition. This same process will continue (3 to 5 times) when the compressor attempts to restart until the PTC device has cooled. The correct 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.

4-2-6 Note for Using the PTC-Starter

(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, PTC materials may fail due to breakdown of their insulating capabilities.

(4)If the exterior of the PTC 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 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.

- 13 -

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 works 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 any way.

4-4 TO REMOVE THE PTC COVER

1) Remove the back cover of the mechanical area.

(OVERLOAD PROTECTOR cross section)
		Customer part
	12345678	number
		Lot code/
330 FBYY	-S1 BOX98	date code	1	3
Electrical		Physical
characteristics		termination
part number		part number

2

Figure 18

- 14 -

5. CIRCUIT DIAGRAM

PWB(PCB) ASSEMBLY,DISPLAY

	BK		BO			BL		SB				WH/		YL /			RD		PR
												RD		BK
	4		3			2		1				1		2			3		4

F-FAN C-FAN

R-DOOR S/W						RT-SENSOR
			PUMP S/W

WH GY PR BK BL	BK BO BL SB	WH/ YL/	RD PR	GY GY YL RD BN BN	CON5 12	BL
		RD BK
1 2 3 4 5 6	1 2 3 4	1 2	3 4	1 2 3 4 5 6	7	F-SENSOR
CON4					11	BL
	CON6	CON6		CON7	10 WH
					9	R-SENSOR
	DISPENSER	BASIC				WH
					8	BO
					7	DEF-SENSOR
	PWB(PCB) ASSEMBLY, MAIN					BO
					6	PK
					5	PK
						F-DOOR S/W
					4	RD

3

YL

STEPPING

2

BK

MOTOR

11 10

9

8

7

6

5

4

3

2

1

7

6

5

4

3

2

1

5

4

3

2

1

1

BL

POWER

BL

BN

GN/

YL

BL

BK

PR

PK

RD

BN

BL

BN

SUPPLY

YL

CORD

CON1

CON2

CON3

BL

BN

GN/

YL

BL

BK

PR

PK

RD

BN

BL

BN

YL

N

L

GN/YL

THERMOSTAT

(GN)

DISPENSER W/VALVE PART

ICE MAKER PART

CAPACITOR PART

FUSE-M (72 C)

DOOR HEATER

PK

F-LAMP

GN/YL

FUSE-M (98 C)

RD

(GN)

I/MAKER W/VALVE

Cr

OLP

V

V

HEATER,SHEATH

R-LAMPS

ICE SENSOR

V

2

SHEATH

ICE MAKER

MOTOR

POWER BK

HEATER,

RD

M

S/W

Cs

4

S

BK

5

GN

3

M

6

BL

/YL

BL

BL

BL

(GN)

BL

BL

BL

BL

CON5 2 WH

1 WH

CON4 1 WH

1 WH

CON3

CON2 2 BK

1 WH

CON1 2 BL

1 BK

CON6

1 RD

P.T.C STARTER

COMP' EARTH

PART

*PLUG TYPE,ICE MAKER PART,CAPACITOR PART, P.T.C START OPTION

PWB(PCB) ASSEMBLY DISPLAY, PUMP S/W, HEATER AND FUSE CONFIGURATION,

PWB (PCB) ASSEMBLY, ICE MAKER

ICE MAKER CONFIGURATION, DISPENSER W/VALVE PART AND COMP' EARTH PART

ON CIRCUIT DIAGRAM ARE SUBJECT TO CHANGE IN DIFFERENT LOCALITIES

AND MODEL TYPE.

* ICE MAKER CONFIGURATION

115-127V/50,60Hz 220-240V/50,60Hz

		FUSE-M	(98 C)	FUSE-M (98 C)		POWER
		POWER	S/W				S/W
CON1	2 BL	1 BK		CON1	2 BL	1 BK

* P.T.C START OPTION			* HEATER AND FUSE CONFIGURATION
MC COMP'	EG COMP'		115-127V/50,60Hz	220-240V/50,60Hz

		2		3	FUSE-M	(72 C)	HEATER,	SHEATH
	4	5	4	6
					HEATER,
						SEATH
	3	6	2	5			FUSE-M	(72 C)

BK:BLACK	BN:BROWN	RD:RED	BO:BRIGHT ORANGE	YL:YELLOW	GN:GREEN
WH:WHITE	PK:PINK	GY:GREY	PR:PURPLE	BL:BLUE	SB:SKY BLUE

- 15 -

6. TROUBLESHOOTING

6-1 COMPRESSOR AND ELECTRIC COMPONENTS

1

2

3

4

Power Source.

Check

Check resistance

resistance of of motor

motorpressorc.

compressor.

.

Check resistance of PTC-Starter.

Check OLP.

		Remove PTC-Starter		(Rated voltage	YES
		from compressor and		±10%)?		2
		measure voltage
		between Terminal C of
		compressor and
		terminal 5 or 6 of PTC.

	YES		5
No voltage.	OLP disconnected?	Replace OLP.
	NO	Check connection
		condition.

Reconnect.

	Applied voltage isn't		Advise customer that		5
	in acceptable range.		power supply needs to be
	(115V ±10%)		checked by an electrician.

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

Check resistance of two terminals in

PTC-Starter.

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

		ground should be infinite.		3
Open or short	Replace
or short to	compressor	3	4	5

ground

Refer to Page 13.

Check resistance of two			Refer	to Page 13.
terminals in OLP.

Check

5

starting state.

		Check the power supply		Supply	YES	Did		YES	Compressor
		under load.		voltage rating		compressor			is OK
		(Compressor attempting		with ±10%.		start?
		to re-start after being off							Replace the
		for 5 minutes).
								NO	compressor

1

NO

- 16 -

6-2 PTC AND OLP

Normal operation of compressor is impossible or poor.

		Separate PTC-Starter		Observation value is
		from Compressor and		115V/60Hz : 6.8 ? ±30%
		measure resistance		at room temperature
		between No. 5 and 6
		of PTC-Starter with a
		Tester.
		(Figure 19)
				The resistance value
				is 0 ? (short) or
				8(open).

PTC OK

Replace PTC-

Starter.

			Shows continuity
	Separate OLP from				Check another		OLP OK
	compressor and check				electric component.
	resistance value between
	two terminals of OLP with a
	tester.		Open
	(Figure 20)				Replace OLP.

6

5

?

Figure 19

Figure 20

- 17 -

6-3 OTHER ELECTRICAL COMPONENTS

Not cooling at all

Compressor doesn't run

Check for open short or

Cause

incorrect resistance readings in the following components

	a. Starting devices	Short, open, or broken.
	b. OLP	Poor contact
		or shorted.
	c. Compressor coil	Coil open or shorted.
	d.Wiring harness	Poor contact	Replace
		or shorted.	indicated component.
Poor cooling performance
Compressor runs	Check starting	Low voltage.	Advise customer that
poorly	voltage.		the power supply
			needs to be checked
			by an electrician.
	Check voltage at	Poor or broken or	Replace
	starting devices.	open contact.	indicated component.
	Check current flowing	Shorted.
	In run winding of
	Compressor.
	Check rating of OLP.	Lack of capacity.
	OLP: 4TM293RFB
	Temp. 130°C

Fan motor doesn't run.

Heavy frost buildup on evaporator

	Check wiring circuit.	Wire is open or
		shorted.
	13 - 15 V
		Replace
		indicated component.
	Check Fan Motor.	Coil is shorted
		or open.

Check current flow in	Open.	Replace
the following		indicated component.
components:
Sensor
Fuse-M
Check resistance flow in	Open.	Replace
the defrost heater.		defrost heater.

- 18 -

6-4 SERVICE DIAGNOSIS CHART

COMPLAINT	POINTS TO BE CHECKED	REMEDY
No Cooling.	•Is the power cord unplugged from the outlet?	•Plug into the outlet.
	•Check if the power switch is set to OFF.	•Set the switch to ON.
	•Check if the fuse of the power switch is shorted.	•Replace the fuse.
	•Measure the voltage of the power outlet.	•If the voltage is low, correct the wiring.
Cools poorly.	•Check if the unit is placed too close to the wall.	•Place the unit about 4 inches (10 cm) from the wall.
	•Check if the unit is placed too close to the stove,	•Place the unit away from these heat sources.
	gas cooker, or in direct sunlight.
	•Is the ambient temperature too high or	•Lower the ambient temperature.
	the room door closed?
	•Check if food put in the refrigerator is hot.	•Put in foods after they have cooled down.
	•Did you open the door of the unit too often	•Don't open the door too often and close
	or check if the door is sealed properly?	it firmly.
	•Check if the Control is set to Warm position	•Set the control to Recommended position .
Food in the	•Is food placed in the cooling air outlet?	•Place foods in the high-temperature section.
Refrigerator		(front part)
is frozen.	•Check if the control is set to colder position.	•Set the control to Recommended position .
	•Is the ambient temperature below 5° C?	•Set the control to Warm position .
Condensation or ice	•Is liquid food sealed?	•Seal liquid foods with wrap.
forms inside	•Check if food put in the refrigerator is hot.	•Put in foods after they have cooled down.
the unit.	•Did you open the door of the unit too	•Don't open the door too often and close
	Often or check if the door is sealed properly?	It firmly.
Condensation forms	•Check if the ambient temperature and humidity	•Wipe moisture with a dry cloth. It will disappear
in the Exterior Case.	of the surrounding air are high.	in low temperature and humidity.
	•Is there a gap in the door gasket?	•Fill up the gap.
There is abnormal	•Is the unit positioned in a firm and even place?	•Adjust the leveling screw, and position the
noise.	•Are any unnecessary objects placed	refrigerator in a firm place.
		•Remove the objects.
	Behind side of the unit?
	•Check if the Drip Tray is not firmly attached.	•Fix the drip tray firmly in the original position.
	•Check if the cover of the compressor enclosure	•Place the cover in its original position.
	in the lower drip tray taken out.
Door does not	•Check if the door gasket is dirty with	•Clean the door gasket.
close well.	an item like juice.	•Position in a firm place and level the
	•Is the refrigerator level?	leveling screw.
		•Make sure food stored in shelves does not prevent
	•Is there too much food in the refrigerator?	the door from closing.
Ice and foods	•Check if the inside of the unit is dirty.	•Clean the inside of the unit.
smell unpleasant.	•Are foods with a strong odor unwrapped?	•Wrap foods that have a strong odor.
	•The unit smells of plastic.	•New products smell of plastic, but this
		will go away after 1-2 weeks.

Other possible problems:

Check if frost forms in the freezer.

Check the refrigeration system.

Check the thermistor

Not

defrosting

The system

is faulty.

The operation of the thermistor is

incorrect.

Check components of the defrosting circuit.

Perform sealed system repair.

Check the thermistor

- 19-

6-5 REFRIGERATION CYCLE

* Troubleshooting Chart

	CAUSE
	PARTIAL
LEAKAGE	LEAKAGE
	COMPLETE
	LEAKAGE
RSERTCI	CLOG
OTIN	CLOG

MOISTURE RESTRICTION

		I
	CN		LOW
	OE
			COMPRESSION
	M	F
	P	F
		I
	R	C
	E	I	NO
		E
	S
		N	COMPRE-
	S	T
	O		SSION
	R

	STATE OF	STATE OF THE	TEMPERATURE	REMARKS
			OF THE
	THE UNIT	EVAPORATOR
			COMPRESSOR
	Freezer	Low flowing sound of	A little higher than	- Refrigerant level is low due to a
	compartment and	refrigerant is heard and frost	ambient	leak.
	refrigerator don’t	forms in inlet only.	temperature.	- Normal cooling is possible by
	cool normally			restoring the normal amount of
				refrigerant and repairing the leak.
	Freezer	Flowing sound of refrigerant	Equal to ambient	- No discharging of refrigerant.
			temperature.	- Normal cooling is possible by
	compartment and
		is not heard and frost isn’t		restoring the normal amount of
	refrigerator don’t	formed.		refrigerant and repairing the leak.
	cool normally
	Freezer	Flowing sound of refrigerant	A little higher than	- Normal discharging of the
			ambient	refrigerant.
	compartment and	is heard and frost forms in
			temperature.	- The capillary tube is faulty.
	refrigerator don’t	inlet only.
	cool normally
	Freezer	Flowing sound of refrigerant is	Equal to ambient	- Normal discharging of the
	compartment and	not heard and frost isn’t	temperature.	refrigerant.
	refrigerator don’t	formed.
	cool.
	Cooling operation	Flowing sound of refrigerant is	Lower than ambient	- Cooling operation restarts when
	stops periodically.	not heard and frost melts.	temperature.	heating the inlet of the capillary
				tube.
	Freezer and	Low flowing sound of	A little higher than	- Low pressure at high side of
	refrigerator don’t	refrigerant is heard and frost	ambient	compressor due to low
	cool.	forms in inlet only.	temperature.	refrigerant level.
	No compressing	Flowing sound of refrigernat is	Equal to ambient	- Nopressure in the high pressure
			temperature	part of the compressor.
	operation.	not heard and there is no
		frost.

- 20 -

6-5-1 SEALED SYSTEM DIAGNOSIS

Not Cooling Complaint

All components operating, No airflow problems, Not frosted up as a defrost problem Problem has been isolated to sealed system area

Frost

Partial

Pattern?

Equalization

Test

Very Fast

Very Slow

Very Slow

	Fast
Inefficient	Partial	Complete
Compressor	Restriction	Restriction
	Condenser
	Temperature
	Hotter than Normal	Faint

Room Temperature

Air/Low Side	Loss of Change
Leak

Trace of Oil

None

Equalization

Test

Very Fast

Cap Tube

Sound

None to Weak

Compressor Not

Pumping

Yes

No

Leak

Undercharge

(The equalization test is trying to restart a compressor after it has been operating.)

- 21 -

7. ICEMAKER OPERATING PRINCIPLES AND REPAIR

7-1 OPERATION PRINCIPLE

7-1-1 Operation Principle of Icemaker

Power On

Start Position

Icemaking

Mode

Harvest

Mode

Fill

Park Position

Test Mode

•Adjusts Ejector to Start Position with power on.

•Waits until water becomes cold after starting the Icemaking operation.

•Runs MOTOR to drop ice from the tray into the ICE BIN.

•Performs Icemaking Mode after supplying water by operating the SOLENOID in ICE VALVE.

•With the detect lever, checks if the ICE BIN is full.

•To operate LINE and SERVICE, press and hold the Cube Size button

for 3 seconds. The icemaking will run through 3 stages:

HarvestFillIcemaking.

1.Turning the Icemaker stop switch off (O) stops the icemaking function.

2.Setting the Icemaker switch to OFF and then turning it back on will reset the icemaker control.

Cube Size button

Power (On/Off) Switch

- 22 -