Kenmore 796.9031.900, 796.9027.900, 796.9002.900, 796.8031.900, 796.8027*.900 Service Manual

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ELECTRIC & GAS DRYER

SERVICE MANUAL

CAUTION

READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLES CORRECTLY BEFORE OFFERING SERVICE.

MODEL : 796.8002*.900 / 796.8027*.900 / 796.8031*.900 /

796.9002*.900 / 796.9027*.900 / 796.9031*.900

AUG. 2009 PRINTED IN KOREA

P/No.:MFL62119905

To avoid personal injury, disconnect power before servicing this product. If electrical power is required

for diagnosis or test purposes, disconnect the power immediately after performing the necessary checks.

WARNING !

WHAT TO DO IF YOU SMELL GAS:

IMPORTANT SAFETY NOTICE

The information in this service guide 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.

RECONNECT ALL GROUNDING DEVICES

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.

IMPORTANT

Electrostatic Discharge (ESD)

Sensitive Electronics

ESD problems are present everywhere. ESD may damage or weaken the electronic control assembly. The new control assembly may appear to work well after repair is finished, but failure may occur at a later date due to ESD stress.

■

Use an anti-static wrist strap. Connect wrist strap to green ground connection point or unpainted metal in the appliance.

- OR -

Touch your finger repeatedly to a green ground connection point or unpainted metal in the appliance.

■

Before removing the part from its package, touch the anti-static bag to a green ground connection point or unpainted metal in the appliance.

■

Avoid touching electronic parts or terminal contacts; handle electronic control assembly by edges only.

■

When repackaging failed electronic control assembly in anti-static bag, observe above instructions.

■ Do not try to light a match, or cigarette, or turn on any gas or electrical appliance.

■ Do not touch any electrical switches. Do not use any phone in your building.

■ Clear the room, building or area of all occupants.

■ Immediately call your gas supplier from a neighbor’s

phone. Follow the gas supplier’s instructions carefully.

■ If you cannot reach your gas supplier, call the fire department.

CONTENTS

1. SPECIFICATIONS .................................................................................................................4

2. FEATURES AND BENEFITS ................................................................................................... 5

3. INSTALLATION INSTRUCTIONS ........................................................................................... 6

4. COLUMBUS DRYER CYCLE PROCESS ................................................................................... 9

5. COMPONENT TESTING INFORMATION ..............................................................................10

6. MOTOR DIAGRAM AND SCHEMATIC..................................................................................13

7. CONTROL LAY - OUT .........................................................................................................14

8. WIRING DIAGRAM ............................................................................................................15

9. DIAGNOSTIC TEST .............................................................................................................16

9-1. TEST 1 120VAC ELECTRICAL SUPPLY..........................................................................17

9-2. TEST 2 THERMISTOR TEST --- MEASURE WITH POWER OFF .......................................20

9-3. TEST 3 MOTOR TEST ................................................................................................21

9-4. TEST 4 MOISTURE SENSOR .....................................................................................22

9-5. TEST 5 DOOR SWITCH TEST ....................................................................................23

9-6. TEST 6 HEATER SWITCH TEST - ELECTRIC TYPE...........................................................24

9-7. TEST 7 GAS VALVE TEST - GAS TYPE.........................................................................25

10. CHANGE GAS SETTING (NATURAL GAS, PROPANE GAS) ...............................................26

11. DISASSEMBLY INSTRUCTIONS ..........................................................................................28

12. EXPLODED VIEW..............................................................................................................35

12-1. CONTROL PANEL & PLATE ASSEMBLY.......................................................................35

12-2. CABINET & DOOR ASSEMBLY...................................................................................36

12-3-1. DRUM & MOTOR ASSEMBLY : ELECTRIC TYPE ........................................................37

12-3-2. DRUM & MOTOR ASSEMBLY : GAS TYPE ...............................................................38

SPECIFICATIONS

796.8002*.900 / 796.8027*.900 / 796.8031*.900 /

ITEM

796.9002*.900 / 796.9027*.900 / 796.9031*.900

REMARK

Color

Material &

Finish

Top Plate

Door Trim

POWER SUPPLY

ELECTRICITY

HEATER

CONSUMPTION

GAS VALVE

CONTROL TYPE

DRUM CAPACITY

Weight (lbs): Net/Gross

No. of Programs

No. of Dry Option

MOTOR

LAMP

White / Patina Beige

Spray

Light Gray

120V / 240V 60Hz (26A)

250W (4.5A)

5400W (22.5A)

15W (125mA)

13W (110mA) X 2

Electronic

7.1 cu.ft.

126 / 144

AC 120V

AC 240V ( ELECTRIC TYPE)

AC 120V

AC 120V ( GAS TYPE)

No. of Temperature Controls

No. of Dry Levels

Audible End of Cycle Beeper

Moisture

Sensor

Temperature

Reversible Door

Drum

Dryer Rack

Child lock

Interior Light

Product (WXHXD)

Packing (WXHXD)

High / Low / Off

Equipped

Adopted

Double Coated Steel

Equipped

" x 30

27" x 38" x 28

" x 44

/3"

Electro sensor

Thermistor

Apply Model : 796.8002*.900 / 796.8027*.900 / 796.8031*.900

Apply Model : 796.9002*.900 / 796.9027*.900 / 796.9031*.900

FEATURES AND BENEFITS

3-1. POWER CORD

INSTALLATION INSTRUCTIONS

1) 4-wire connection

1. External ground connector - Dotted line shows position of NEUTRAL ground wire before being moved to center terminal block screw

2. Center silver-colored terminal block screw

3. Green wire of harness

1. External ground connector

2. Green or bare copper wire of power supply cord

3. 3/4 in. (1.9 cm) UL-listed strain relief

4. Center silver-colored terminal block screw

5. Neutral grounding wire (green)

6. Neutral wire (white)

5. Connect the other wires to outer terminal block screws. Tighten screws.

6. Tighten strain relief screws.

7. Insert tab of terminal block cover into slot of dryer

rear panel Secure cover with hold-down screw.

3. Connect ground wire (green or bare) of power supply cable to external ground conductor screw. Tighten screw.

4. Connect neutral wire (white or center wire) of power supply cord to the center, silver colored terminal screw of the terminal block.

1. 4-wire receptacle (NEMA type 14-30R)

2. 4-prong plug

3. Ground prong

4. Neutral prong

5. Spade terminals with upturned ends

6. 3/4 in. (1.9 cm) UL approved strain relief

7. Ring terminals

1. Remove center terminal block screw.

2. Remove appliance ground wire (green) from

external ground connector screw. Fasten it under center, silver colored terminal block screw.

IMPORTANT: A 4-wire connection is

required for mobile homes and where local codes do not permit the use of 3 wire connections.

3 4 5 7

1 2

4 5 6

2 3

2) 3-wire connection

Use where local codes permit connecting cabinet-ground conductor to neutral wire.

1. Remove center terminal block screw.

2. Remove appliance ground wire (green) from

external ground connector screw. Connect appliance ground wire and the neutral wire (white or center wire) of power supply cord/cable under center, silver colored terminal block screw. Tighten screw.

3. Connect the other wires to outer terminal block

screws. Tighten screws.

Use where local codes permit connecting cabinet-ground conductor to neutral wire.

3) Optional 3-wire connection

1. Loosen or remove center terminal block screw.

Connect neutral wire (white or center wire) of power supply cord to the center, silver colored terminal screw of the terminal block. Tighten screw.

1. External ground connector

2. Neutral grounding wire (green)

3. Center silver-colored terminal block screw

4. Neutral wire (white or center wire)

5. 3/4 in. (1.9 cm) UL-listed strain relief

3. Connect the other wires to outer terminal block screws. Tighten screws.

4. Tighten strain relief screws.

5. Insert tab of terminal block cover into slot of dryer

rear panel. Secure cover with hold-down screw.

4. Tighten strain relief screws.

5. Insert tab of terminal block cover into slot of dryer

rear panel. Secure cover with hold-down screw.

6. Connect a separate copper ground wire from the external ground connector screw to an adequate ground.

1. External ground connector

2. Neutral grounding wire (green)

3. Neutral wire (white or center wire)

Grounding path determined by a qualified electrician

1. 3-wire receptacle (NEMA type 10-30R)

2. 3-wire plug

3. Neutral prong

4. Spade terminals with up turned ends

5. 3/4 in. (1.9 cm) UL approved strain relief

6. Ring terminals

7. Neutral (white or center wire)

1 2

3-2. Connect Gas Supply Pipe (Gas Dryer ONLY)

1. Make certain your dryer is equipped for use with the type of gas in your laundry room. Dryer is equipped at the factory for Natural Gas with a 3/8” N.P.T. gas connection.

2. Remove the shipping cap from the gas connection at the rear of the dryer. Make sure you do not damage the pipe thread when removing the cap.

3. Connect to gas supply pipe using a new flexible stainless steel connector.

4. Tighten all connections securely. Turn on gas and check all pipe connections (internal & external) for gas leaks with a non-corrosive leak detection fluid.

5. For L.P. (Liquefied Petroleum) gas connection, refer to section on Gas Requirements.

For further assistance, refer to section on Gas Requirements.

1 New Stainless Steel Flexible Connector - Use

only if allowed by local codes (Use Design A.G.A. Certified Connector)

2 1/8” N.P.T. Pipe Plug

(for checking inlet gas pressure)

3 Equipment Shut-Off Valve-Installed within 6’

(1.8 m) of dryer

4 Black Iron Pipe

Shorter than 20’ (6.1 m) - Use 3/8” pipe Longer than 20’ (6.1 m) - Use 1/2” pipe

5 3/8” N.P.T. Gas Connection

Apply Model : 796.8002*.900 / 796.8027*.900 / 796.8031*.900

DRYER CYCLE PROCESS

796.9002*.900 / 796.9027*.900 / 796.9031*.900

* Sensor dry : “Dry Level” is set by users. ** Manual dry : “Temperature control” is set by users. Default settings can be adjusted by users.

When checking the Component, be sure to turn the power off, and do voltage discharge sufficiently.

COMPONENT TESTING INFORMATION

CAUTION

Component Test Procedure Check result Remark

1. Thermal cut off

• Check Top Marking : N130

Measure resistance of terminal to terminal

①

Open at 284±12°F (140±7°C)

②

Auto reset -31°F (-35°C)

Same shape as Outlet Thermostat.

If thermal fuse is open must be replaced

①

Resistance value

≒

∞

②

Continuity (250°F ↓) < 1Ω

• Heater caseSafety

• Electric type

2. Hi limit Thermostat (Auto reset)

Measure resistance of terminal to terminal

①

Open at 257±9°F (125±5°C)

②

Close at 221±9°F (105±5°C)

①

Resistance value

≒

∞

②

Resistance value < 5Ω

• Heater case Hi limit

• Electric type

3. Outlet Thermostat ( Auto reset)

• Check Top Marking :

N85

Measure resistance of terminal to terminal

①

Open at 185±9°F (85±5°C)

②

Close at 149±9°F (65±5°C)

Same shape as Thermal cut off.

①

Resistance value

≒

∞

②

Resistance value < 5Ω

• Blow housing Safety

• Electric type

4. Lamp holder Measure resistance of terminal to terminal

Resistance value : 80Ω ~ 100Ω

6. Idler switch Measure resistance of the following terminal :

“COM - NC”

1. lever open

①

Resistance value < 1Ω

2. Lever push (close)

②

Resistance value

≒

∞

5. Door switch Measure resistance of the following terminal

1) Door switch knob : open

①

Terminal : “COM” - “NC” (1-3)

②

Terminal : “COM” - “NO” (1-2)

2) Door switch push : push

①

Terminal : “COM” - “NC” (1-3)

②

Terminal : “COM” - “NO” (1-2)

①

Resistance value < 1Ω

②

Resistance value

≒

∞

①

Resistance value

≒

∞

②

Resistance value < 1Ω

The state that Knob is pressed is opposite to Open condition.

Component Test Procedure Check result Remark

7. Heater Measure resistance of the following terminal

①

Terminal : 1 (COM) - 2

②

Terminal : 1 (COM) - 3

③

Terminal : 2 - 3

①

Resistance value : 10Ω

②

Resistance value : 10Ω

③

Resistance value : 20Ω

• Electric type

8. Thermistor Measure resistance of terminal to terminal

Temperature condition : 58°F ~ (10~40°C) 58°F ~ 104F (10~40°C)

Resistance value : 10Ω • Heater case -

Hi limit

• Electric type

9. Motor • See Page 13

10. Gas valve

valve 1

valve 2

Measure resistance of the following terminal

①

Valve 1 terminal

②

Valve 2 terminal

①

Resistance value : > 1.5kg ~

②

Resistance value : >

1.5~2.5kg

• Gas type

11. Igniter Measure resistance of terminal to terminal

Resistance value : 100~800Ω • Gas type

12. Frame Detect Measure resistance of terminal to terminal

①

Open at 370°F ((Maximum)

②

Close at 320°F

①

Resistance value

≒

∞

②

Resistance value < 1Ω

• Gas type

①

②

③

+ 27 hidden pages

Kenmore 796.9031*.900, 796.9027*.900, 796.9002*.900, 796.8031*.900, 796.8027*.900 Service Manual

Kenmore 796.9031.900, 796.9027.900, 796.9002.900, 796.8031.900, 796.8027*.900 Service Manual