Kenmore 795.77319.600, 795.77316.600, 795.77314.600, 795.77312.600, 795.77309.600 Service Manual

R

BOTTOM FREEZER REFRIGERATOR

REFRIGERATOR

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE PRODUCT

READ THE SAFETY PRECAUTIONS IN THIS MANUAL

ENGLISH

795.77302.600/601

795.77304.600/601

795.77306.600/601

795.77309.600/601

795.77312.600/601

795.77314.600/601

795.77316.600/601

795.77319.600/601

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 Door alignment ............. ....................................................................................................	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 ...........................................................................................................	17
6.1 Compressor and electrical components .............................................................................	17
6.2 PTC and OLP ....................................................................................................................	18
. 6.3 Other electrical components ..............................................................................................	19
6.4 Service diagnosis chart ......................................................................................................	20
6.5 Refrigeration cycle .............................................................................................................	21
7. ICEMAKER OPERATING PRINCIPLES AND REPAIR ..........................................................	23
7.1 Operation Principle ............................................................................................................	23
. 7.2 Ice maker functions ............................................................................................................	24
7.3 Defect diagnosis function ................................................................................................	25
8. DESCRIPTION OF FUNCTION & CIRCUIT OF MICOM .........................................................	26
8.1 Function ............................................................................................................................	26
8.2 PCB function .....................................................................................................................	31
8.3 Resistance specification of sensor .....................................................................................	32
8.4 Troubleshooting ................................................................................................................	33
8.5 Main PWB assembly and parts list .....................................................................................	35
8.6 PWB diagram ....................................................................................................................	37
9. EXPLODED VIEW AND REPLACEMENT PART LIST ...........................................................	41
795.773**.600 .........................................................................................................................	46
795.773**.601 .........................................................................................................................	54

SAFETY PRECAUTIONS

Please read the following instructions before servicing your refrigerator.

1.Check the refrigerator forcurrent 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 onto 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.
1.3 ELECTR IC AL SPECIFIC ATIO N S
Freezer Temperature Control (Middle setting) ...................................................................................................................	-6°F to +8°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. 493 kWh/yr (Energy Star)

1-4 NO LOAD PERFORMANCE
C o n tro l P o s itio n : M ID /M ID
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 .............	6871JB1374C
Main Control ..........................	6871JK1011A

1-8 AIR FLOW / CIRCULATION D’AIR.

EVAPORATOR EVAPORATOR FAN

FRESH FOOD

COLD AIR

MIXED AIR

AIR RETURN TO EVAPORATOR

Vegetable box

HOT LOOP

DRYER	EVAPORATOR
CONDENSER FAN	FREEZER

COMPRESSOR CONDENSER

- 4 -

2. PARTS IDENTIFICATION

	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

FAdjusta Cube Ice Maker

GIce Bin

HDurabase

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
	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

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.

- 6 -

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 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 middle hinge as shown.

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

Figure 9

- 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 PULL OUT DRAWER

3-8-1 FOLLOW STEPS TO REMOVE

Step 1) Open the freezer door.

Step 2) Remove the lower basket.

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 basket, 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 -

4-1 COMPRESSOR

4. COMPRESSOR ELECTRICAL

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	OVERLOAD PROTECTOR
	this gas to high-temperature and high-pressure gas. It then
	delivers the gas to the condenser.	N	C
	4-1-2 Composition
		PTC		COMPRESSOR
	The compressor includes overload protection. The PTC		5
		2		MOTOR
	starter and OLP (overload protector) are attached to the
			S	M
	outside of the compressor. Since the compressor is				M
				S
	manufactured to tolerances of 1 micron and is hermetically	3	6
	sealed in a dust and moisture-free environment, use	L1
				SEALED
	extreme caution when repairing it.	PTC STARTER
	4-1-3 Note for Usage	Resistance Starter Capacitor Running		TERMINAL

	(1) Be careful not to allow over-voltage and over-current.	Figure 17
	(2) If compressor is dropped or handled carelessly, poor
	operation and noise may result.	4-2-4 Motor Restarting and PTC Cooling
	(3) Use proper electric components appropriate to the
		(1) It requires approximately 5 minutes for the pressure, to
	particular compressor in your product.
		equalize before the compressor can restart.
	(4) Keep compressor dry.
		(2) The PTC device generates heat during operation.
	If the compressor gets wet (in the rain or a damp
		Therefore, it must be allowed to cool before the
	environment) and rust forms in the pin of the Hermetic
		compressor can restart.
	Terminal, poor operation and contact may result.
		4-2-5 Relation of PTC-Starter and OLP
	If the hermetic connector rusts out or fails, refrigerant
	and oil will be expelled into the contact area, probably	(1) If the compressor attempts to restart before the PTC
	resulting in smoke and fire.	device is cooled, the PTC device will allow current to
	(5) When replacing the Compressor, be careful that dust,
		flow only to the main winding.
	humidity, and soldering flux don’t contaminate the inside
		(2) The OLP will open because of the overcurrent
	of the compressor. Contamination in the cylinder may
		condition. This same process will continue (3 to 5
	cause noise, improper operation or even cause it to
		times) when the compressor attempts to restart until
	lock up.
		the PTC device has cooled. The correct OLP must be
	4-2 PTC-STARTER
		properly attached to prevent damage to the
	4-2-1 Composition of PTC-Starter	compressor.
		Parts may appear physically identical but could have
	(1) PTC (Positive Temperature Coefficient) is a no-contact
		different electrical ratings. Replace parts by part
	semiconductor starting device which uses ceramic	number and model number. Using an incorrect part
	material consisting of BaTiO3.	could result in damage to the product, fire, injury, or
	(2) The higher the temperature is, the higher the resistance	possibly death.
	value. These features are used as a starting device for	4-2-6 Note for Using the PTC-Starter
	the motor.
		(1) Be careful not to allow over-voltage and over-current.
	4-2-2 Role of PTC-Starter
		(2) Do not drop or handle carelessly.
	(1) The PTC is attached to the sealed compressor and is	(3) Keep away from any liquid.
	used for starting the motor.
		If liquid such as oil or water enters the PTC,
	(2) The compressor is a single-phase induction motor.
		PTC materials may fail due to breakdown of their
	Durign the starting operation, the PTC allows current
		insulating capabilities.
	flow to both the start winding and main winding.
		(4) If the exterior of the PTC is damaged, the resistance
	3) As the compressor starts, the current through the PTC	value may be altered. This can cause damage to the
		compressor and result in a no-start or hard-to-start
	causes its temperature to rise, and so the resistance
		condition.

	also rises. When the resistance reaches a high enough (5) Always use the PTC designed for the compressor and
	level, only a trickle current will be running through the	make sure it is properly attached to the compressor.
	start winding. This small current then keeps the PTC
		Parts may appear physically identical but could have
	hot and the resistance high.
		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 COVER PTC

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

PCB main, 6871JB1375

Air Damper

Motor

- 15 -

PCB main, 6871JK1011

LG Electronics

CIRCUIT DIAGRAM

									PWB(PCB) ASSEMBLY,DISPLAY
									BKBOBLSB				WH/RDYL/BKRD PR
									4	3	2	1	1	2	3		4			DOOR-R S/W			PUMPS/W		SENSOR-RT
		F-FAN			C-FAN
	WHGYPRBK BL					6			BK BOBL SB				WH/RDYL/BKRDPR						GYGYYL RDBNBN
	1	2	3	4	5				1	2	3	4	1	2	3		4		1		2	3	4	5	6	7
	CON4								CON6				CON6						CON7									CON5	12	BL	F-SENSOR
																													11	BL
								DISPENSER					BASIC
																													10 WH		R-SENSOR
																													9	WH
																													8	BO	DEF-SENSOR
																													7	BO
									PWB(PCB) ASSEMBLY, MAIN																				6	PK	F-DOOR S/W
																													5	PK
																													4	RD
																													3	YL	STEPPING
																													2	BK	MOTOR
																													1	BL
POWER		11 10 9			8	7	6	5	4	3	2	1			7	6	5	4	3	2	1			5	4	3	2	1
		BL		BN		GN/YLYL			BL		BK			PR			PK		RD		BN			BL		BN
SUPPLY
CORD	CON1												CON2										CON3
	BL		BN		GN/YLYL				BL		BK		PR			PK		RD		BN			BL		BN
N

L

GN/YL

(GN)

GN/YL

FUSE-M

C)(98

(GN)

CON5 2WH

1WH

ICE SENSOR

1WH

HEATER,

SHEATH

2BK

M ICE MAKER

MOTOR

2BL

POWERBK

S/W

1RD

CON4

1

CON3

CON2

1WH

CON1

1BK

CON6

WH

PWB (PCB) ASSEMBLY, ICE MAKER

ICE MAKER PART

V

ROOM	CAPACITOR PART				OLP	V V
MACHINETHE	Cr
		PK
W/VALVE IN	RD	4	2
I/MAKER	Cs		5		BK
			S
		3	M		GN
			6		/YL
	BL			BL	(GN) BL	BL
		P.T.C STARTER		COMP' EARTH

PART

*PLUG TYPE,ICE MAKER PART,CAPACITOR PART, PWB(PCB) ASSEMBLY DISPLAY, PUMP S/W, DISPENSER W/VALVE PART AND COMP' EARTH PART ON CIRCUIT DIAGRAM ARE SUBJECT TO CHANGE IN DIFFERENT LOCALITIES AND MODEL TYPE.

DISPENSER W/VALVE PART	R-LAMPS	F-LAMP
	BL	BL

FUSE(72 M-C)

RDHEATER,SHEATH

BL

HEATERDOOR

BL

BK:BLACK BN:BROWN RD:RED BO:BRIGHT ORANGE YL:YELLOW GN:GREEN BL:BLUE

WH:WHITE PK:PINK GY:GREY PR:PURPLE

SB:SKY BLUE

- 16 -

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

- 17 -

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

- 18 -

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.

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