Speed Queen LTZ99A*N0902 Stacked and Parts Diagram

SWD441C

Homestyle

Stacked Washer/

Dryers

Refer to Page 3 for Model Numbers

Service

www.alliancelaundry.com

Part No. 801805R1

March 2016

Table of Contents

Model Identification.................................................3

Section 1 –Safety Information

Locating an Authorized Servicer .............................6

Section 2 –Introduction

Customer Service .....................................................7

Serial Plate Location ................................................7

How Your Stacked Washer/Dryer Works................8

Section 3 –Troubleshooting

1. Washer Motor Circuit ..............................11

2. Troubleshooting Knocking Noise ............11

Dryer

3. Dryer Motor Does Not Run .....................13

4. Dryer Stops In Cycle; Quits After The First Few Loads; Has A Burning Smell; Cycles On Motor

Thermal Protector ...................................14

5. Dryer Motor Runs But Cylinder

Does Not Turn ........................................15

6. Dryer Motor Does Not Stop ...................15

7. Dryer Runs Only When

Door is Open ...........................................16

8. Dryer Heating Assembly Does

Not Heat or Burner Does Not Ignite .......16

9. Igniter Does Not Glow (Gas Supply

Sufficient) – Gas Dryer Models .............17

10. Burner Ignites And Goes Out

Repeatedly – Gas Dryer Models ..............17

11. Igniter Glows But Burner Does

Not Ignite – Gas Dryer Models ...............17

12. Dryer Heater Assembly Or Burner

Shuts Off Prematurely ............................18

13. Dryer Heater Assembly or Burner Repeatedly Cycles Off On Limit

Thermostat ...............................................18

14. Dryer Heater Assembly or Burner

Does Not Shut Off ..................................19

15. Clothes Do Not Dry in Dryer ..................19

16. Timer Does Not Advance In

Automatic Cycle .....................................20

17. Clothes Are Too Hot When

Removed From Dryer .............................21

18. Excessive Chattering Or Vibrating

Noise in Dryer .........................................21

19. Excessive Humming Or Whistling

Noise in Dryer .........................................21

Washer Control

20. Washer Error Code Listing ......................23

21. Washer Will Not Start – No LEDs/Lights lit (No response to

start switch) ............................................24

22. Washer Will Not Start – Door Open Error (Wash/Rinse LEDs Flashing – Door must be closed

and attempting to lock) ...........................26

23. Washer Will Not Start – No Door Lock

(Door LED Flashing) ..............................28

24. Washer Motor Will Not Run

(Door/Final Spin LEDs Flashing) ..........30

25. Washer Will Not Fill – No Communication Error

(Wash/Door LEDs Flashing) ..................32

26. Washer Overflows ..................................34

27. Pump Does Not Operate .........................36

28. Serial Communication Error

(Final Spin/Rinse LEDs Flashing) ..........38

29. Washer Will Not Heat – Open/Shorted Temperature Sensor (Heating LED flashing at end of cycle)

(Models equipped with heater) ...............40

30. Washer Will Not Heat (Models equipped

with heater) .............................................42

Section 4 –Grounding

31. Wall Receptacle Polarity Check

(Washer Power Cord) ..............................45

32. Dryer Ground Wires From Terminal Block or Power Cord To Rear Bulkhead and From Rear Bulkhead

To Control Housing ................................46

33. Washer Ground Connections ..................48

34. Washer Ground Connections – Washers with suffix 4350

in Model No. ...........................................50

35. Dryer Ground Connections .....................52

801805R1 1

(continued)

Section 5 –Service Procedures

36. To Remove the Dryer ..............................55

37. Control Panel and Controls ....................56

38. Washer Control .......................................58

39. Pressure Switch ......................................59

40. Control Cabinet .......................................59

41. Washer Lower Access Panel ..................59

42. Inverter Control ......................................60

43. Electric Drain Pump ...............................61

44. Washer Belt ............................................62

45. Mixing Valve ..........................................63

46. Washer Front Panel ................................64

47. Washer Loading Door ............................67

48. Washer Door Seal and Hose

Assembly ................................................68

49. Washer Door Switch ...............................70

50. Washer Door Latch Switch .....................70

51. Washer Motor .........................................71

52. Outer Tub Front Panel ............................73

53. Heating Element (Models equipped

with heater) ..............................................75

54. Washer Inner Basket Pulley ...................76

55. Washer Inner Basket Assembly ...............76

56. Bearing Housing .....................................83

57. Dryer Access Panel .................................85

58. Cabinet Top ............................................86

59. Lint Filter ................................................87

60. Dryer Loading Door ................................87

61. Dryer Inner and Outer Door Panels

and Door Pull ..........................................88

62. Dryer Door Strike ....................................88

63. Dryer Door Seal ......................................89

64. Dryer Front Panel and Panel Seal ...........90

65. Dryer Door Switch .................................90

66. Dryer Door Catch ....................................90

67. Dryer Door Hinge ...................................92

68. Dryer Hold-down Clips and

Locators ...................................................92

69. Burner System Components

(Gas Models) ..........................................93

70. Burner Housing and Heat Shroud

(Gas Models) ..........................................95

71. Limit Thermostat .....................................95

72. Heater Assembly (Electric Models) .......96

73. Thermostat ...............................................96

74. Air Duct ...................................................96

75. Dryer Motor and Exhaust Assembly ......97

76. Dryer Front Bulkhead Assembly ..........101

77. Cylinder Belt .........................................103

78. Dryer Cylinder Assembly .....................104

79. Dryer Rear Seal ....................................105

80. Cylinder Rollers ....................................107

81. Outlet Cover ..........................................107

82. Rear Bulkhead and Heater Duct ...........108

83. Terminal Block or Power Cord ............110

Section 6 –Adjustments

84. Cabinet Leveling Legs ...........................113

85. Washer Loading Door ..........................114

86. Washer Motor Belt Tension .................115

87. Washer Door Catch ..............................116

88. Shipping Braces ....................................117

89. Burner Flame (Gas Models) .................118

Section 7 –Dryer Test Procedures

90. Timer Contacts ......................................119

91. Fabric Selector Switch ..........................120

92. Drive Motor ..........................................121

93. Motor Switch ........................................124

94. Burner System Operation ......................126

95. Electrical Circuit To Ignition System

(Gas Models) ........................................127

96. Gas Valve Coils Check (Gas Models) ...127

97. Sensor Check (Gas Models) .................128

98. Igniter Check (Gas Models) ..................128

99. Thermal Fuse (Electric Models) ...........129

100.Heater Assembly (Electric Models) ......129

101.Cycling or Limit Thermostat ................129

102.Door Switch .........................................130

Section 8 –Internal Wiring of Dryer Motor Switch

2 801805R1

Model Identification

Information in this manual is applicable to these washers.

LTK96A*N4350

LTS97A*N3000

LTS97A*N3300

LTS97A*N4350

LTS99A*N3000

LTS99A*N3060

LTS99A*N3080

LTZ97A*N2802

LTZ99A*N0902

* Add Letter To Designate Color. W – White Q – Bisque

801805R1 3

Notes

4 801805R1

Section 1

• Failure to install, maintain, and/or operate this machine according to the manufacturer’s instructions may result in conditions which can produce serious injury, death and/or property damage.

• Do not repair or replace any part of the machine or attempt any servicing unless specifically recommended or published in this Service Manual and that you understand and have the skills to carry out.

• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the machine is properly grounded and to reduce the risk of fire, electric shock, serious injury, or death.

W284

WARNING

Safety Information

Throughout this manual and on machine decals, you will find precautionary statements (“CAUTION,” “WARNING” and “DANGER”) followed by specific instructions. These precautions are intended for the personal safety of the operator, user, servicer, and those maintaining the machine.

DANGER

Danger indicates an imminently hazardous situation that, if not avoided, will cause severe personal injury or death.

WARNING

Warning indicates a hazardous situation that, if not avoided, could cause severe personal injury or death.

CAUTION

Caution indicates a hazardous situation that, if not avoided, may cause minor or moderate personal injury or property damage.

Additional precautionary statements (“IMPORTANT” and “NOTE”) are followed by specific instructions.

IMPORTANT

The word “IMPORTANT” is used to inform the reader of specific procedures where minor machine damage will occur if the procedure is not followed.

NOTE

The word “NOTE” is used to communicate installation, operation, maintenance or servicing information that is important but not hazard related.

In the interest of safety, some general precautions relating to the operation of this machine follow.

801805R1 5

Section 1 Safety Information

To reduce the risk of electric shock, fire, explosion, serious injury or death:

• Disconnect all electric power to the machine and accessories before servicing.

• Close gas shut-off valve to gas dryer before servicing.

• Never start machine with any guards/panels removed.

• Whenever ground wires are removed during servicing, these ground wires must be

reconnected to ensure that the machine is properly grounded.

• Washer motor not grounded! Disconnect electric power before servicing motor.

W502

WARNING

Repairs that are made to your products by unqualified persons can result in hazards due to improper assembly or adjustments subjecting you, or the inexperienced person making such repairs, to the risk of serious injury, electrical shock, or death.

W007

WARNING

If you or an unqualified person perform service on your machine, you must assume the responsibility for any personal injury or property damage which may result. The manufacturer will not be responsible for any injury or property damage arising from improper service and/or service procedures.

W286

WARNING

NOTE: The WARNINGS and IMPORTANT INSTRUCTIONS appearing in this manual are not meant to cover all possible conditions and situations that may occur. Common sense, caution and care must be exercised when installing, maintaining or operating the machine.

Always contact your dealer, distributor, service agent or the manufacturer about any problems or conditions you do not understand.

Locating an Authorized Servicer

Alliance Laundry Systems is not responsible for personal injury or property damage resulting from improper service. Review all service information before beginning repairs.

Warranty service must be performed by an authorized technician, using authorized factory parts. If service is required after the warranty expires, Alliance Laundry Systems also recommends contacting an authorized technician and using authorized factory parts.

6 801805R1

Section 2

Serial Plate

Introduction

Customer Service

If literature or replacement parts are required, contact the source from whom the machine was purchased or contact Alliance Laundry Systems at (920) 748-3950 for the name and address of the nearest authorized parts distributor.

For technical assistance, call (920) 748-3121.

Serial Plate Location

When calling or writing about your product, be sure to mention model and serial numbers. Model and serial numbers are located on serial plate(s) as shown.

SWD1134P

801805R1 7

Section 2 Introduction

SWD666N

Pressure Switch

(Located inside

control cabinet)

Control

(Located inside

control cabinet)

Electric

Drain Pump

Motor

Outer

Tub

Inner

Basket

Mixing

Valve

Exhaust Fan

Inverter Control

(Mounted to base

of washer)

Motor

Cylinder

Air Duct

Lint

Filter

Heating Element (Electric Models)

How Your Stacked Washer/Dryer Works

8 801805R1

Section 2 Introduction

General (Dryer)

The dryer uses heated air to dry loads of laundry. When the motor is started, the exhaust fan pulls fresh air in through louvers at the rear of the dryer and over the heat source (burner flame for gas and heating element for electric). The heated air moves through the heater duct and into the cylinder, where it circulates through the wet load. The air then passes through the lint filter, air duct and exhaust fan, where it is vented to the outdoors.

General (Washer)

This frontload washer provides some of the same principles of operation as the typical topload washers. It senses water level, it dispenses the desired laundry detergent, agitates the clothes for good cleaning action, removes the water out of the washer and spins the clothing in preparation for the dryer.

The difference in operation is primarily the rotational washing agitation created for the horizontal basket and drum. This agitation tumbles the clothes in a clockwise, pause, and counter-clockwise direction. This reversing tumbling action provides an efficient washing process and requires less laundry detergent and less water.

The cycle begins by pressing the start button, which locks the loading door. The type of cycle and water temperature are determined by the cycle select switch and temperature selector switch.

The inner basket starts agitating during the wash water fill. A column of air is trapped in a pressure bulb and hose. The air pressure continues to increase as the inner basket fills with water until it is great enough to activate the pressure switch which then causes the wash fill to stop.

The regular and perm press agitate cycles tumble the clothing in a clockwise direction for a period of 15 seconds, pauses for nine seconds and then tumbles the clothing in a counterclockwise direction for 15 seconds. This agitation continues until the wash soak cycle. The machine stops agitating and turns on the pump which removes the wash water.

Upon completion of the wash cycle, the machine goes into two rinse cycles. Fresh cold water is brought into the inner basket via the mixing valve until the pressure switch shuts off the water while agitating. The rinse cycle consists of agitation for a predetermined amount of time then a spin mode with the pump running while the machine goes into a series of 4 short 500 RPM spins.

much water as possible from the clothing to prepare them for the dryer. The spin speeds and duration of this final high spin cycle are determined by the type of wash cycle selected (

refer to table).

NOTE: Washer may not reach 1000 RPM because of an out-of-balance condition. Control may limit speed to 850, 650 or 500 RPM depending on severity of out-of-balance condition.

Regular Perm Press Delicate

650

RPM 1000

RPM

minutes

minute

minutes

Technical (Washer)

The basic operational system of this washer consists of the control, temperature switch, the inverter control, pressure switch, water valves, electric pump, A.C. motor and cycle select switch.

The control performs all timing functions like the timer in a topload washer.

The inverter control uses a speed sensor on the motor to measure the drum RPM. Before entering any spin step the inverter control measures the RPM of motor to sense out-of-balance. The inverter control will try to redistribute the clothes if an out-of-balance condition exists; the inverter control will limit the spin speed to several speeds depending on the severity of the out-ofbalance condition. If the out-of-balance condition is severe enough the inverter control will limit speed to 90 RPM and will not spin.

NOTE: An additional out-of-balance switch is used to detect any out-of-balance condition during spins. If this switch opens during a spin step, the inverter control immediately stops and then restarts the spin.

After all the rinse cycles have been completed, the washer goes into a final high spin cycle to extract as

801805R1 9

Notes

10 801805R1

To reduce the risk of electric shock, fire, explosion, serious injury or death:

• Disconnect electric power to the washer before servicing.

• Never start the washer with any guards/panels removed.

• Whenever ground wires are removed during servicing, these ground wires must be

reconnected to ensure that the washer is properly grounded.

W003

WARNING

Troubleshooting

Windings

Tach. C i r c u it

White

Grey

Red

54321

Grey

1. WASHER MOTOR CIRCUIT

Section 3

Resistance Values:

Tachometer Circuit: Terminals 4–5 Approx. 115 ohms

2. TROUBLESHOOTING KNOCKING NOISE

Windings:

Terminals 1–2, 2–3, 1-3 Approx. 4.5 ohms

If a frontload washer produces a noise similar to a knock on a door, it might be due to a flat spot on the belt. The knocking sound is made when the flat spot hits the pulley. The knocking may occur during a pulse spin and fade after reaching a higher RPM.

To correct this condition, replace the washer belt. Refer to Paragraph 44.

801805R1 11

Notes

12 801805R1

To reduce the risk of electric shock, fire, explosion, serious injury or death:

• Disconnect all electric power to the machine and accessories before servicing.

• Close gas shut-off valve to gas dryer before servicing.

• Never start machine with any guards/panels removed.

• Whenever ground wires are removed during servicing, these ground wires must be

reconnected to ensure that the machine is properly grounded.

• Washer motor not grounded! Disconnect electric power before servicing motor.

W502

WARNING

Section 3

Troubleshooting

Dryer

IMPORTANT: Refer to wiring diagram for aid in testing dryer components.

3. DRYER MOTOR DOES NOT RUN

POSSIBLE CAUSE TO CORRECT

Electrical power off, fuse blown, or power cord not plugged in.

• Check laundry room for blown or loose fuse(s), or open circuit breaker(s). The dryer itself does not have an electrical fuse.

• Check both fuses for electric models.

Loading door not closed. • Close door.

Inoperative door switch. • Test switch and replace if inoperative.

Timer improperly set. • Reset timer or try another cycle.

Inoperative timer. • Test timer and replace if inoperative.

Motor starting functions inoperative. Does not start, or motor just hums.

Motor is dead, will not run. • Refer to Paragraph 94 to check motor switch, motor

Motor overload protector has cycled. • Wait two or three minutes for overload protector to reset.

Motor centrifugal switch sticky or plugged with lint.

Bind in motor bearing. • Remove belt and determine if motor shaft will spin.

Loose motor wire harness connection block. • Firmly press connection block onto motor switch.

Broken, loose, or incorrect wiring. • Refer to wiring diagram.

Power cord is miswired. • Refer to wiring diagram for the correct wiring.

•Refer to Paragraph 94 to check motor switch and motor windings.

windings, and main windings.

If protector cycles repeatedly, refer to Paragraph 4.

• Remove dust or lint and spray with a cleaner and lubricant.

• Replace motor if shaft is locked up.

801805R1 13

Section 3 Troubleshooting Dryer

To reduce the risk of electric shock, fire, explosion, serious injury or death:

• Disconnect all electric power to the machine and accessories before servicing.

• Close gas shut-off valve to gas dryer before servicing.

• Never start machine with any guards/panels removed.

• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the machine is properly grounded.

• Washer motor not grounded! Disconnect electric power before servicing motor.

W502

WARNING

4. DRYER STOPS IN CYCLE; QUITS AFTER THE FIRST FEW LOADS; HAS A BURNING SMELL; CYCLES ON MOTOR THERMAL PROTECTOR

POSSIBLE CAUSE TO CORRECT

Incorrect Voltage. • Refer to nameplate in door well for correct voltage.

•Refer to Installation Instructions (supplied with dryer) for electrical requirements.

Clothes load too large. • Remove part of load. A normal washer load is a normal

dryer load. Maximum load: dryer cylinder one half full of wet clothes.

Clothes cylinder is binding. • Check cylinder for binding and “out of round” condition.

• Check front and rear bulkheads for warping.

• Check support rollers for binding.

• Check cylinder seals and glides for wear or damage.

• Check for clothes lodged between cylinder baffle and bulkhead.

Broken, loose or incorrect wiring. • Refer to wiring diagram.

Motor switch functions inoperative.

•Refer to Paragraph 94 to check switch and windings.

Short in motor winding.

Clothes item caught in fan. • Check fan for obstruction.

14 801805R1

Section 3 Troubleshooting Dryer

To reduce the risk of electric shock, fire, explosion, serious injury or death:

• Disconnect all electric power to the machine and accessories before servicing.

• Close gas shut-off valve to gas dryer before servicing.

• Never start machine with any guards/panels removed.

• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the machine is properly grounded.

• Washer motor not grounded! Disconnect electric power before servicing motor.

W502

WARNING

5. DRYER MOTOR RUNS BUT CYLINDER DOES NOT TURN

POSSIBLE CAUSE TO CORRECT

Motor drive pulley loose. • Tighten pulley.

Belt not installed on pulley. • Install belt. Refer to Figure 44.

Broken cylinder belt. • Replace belt.

Clothes cylinder is binding. • Check cylinder for binding and “out of round” condition.

• Check front and rear bulkheads for warping.

• Check cylinder rollers for binding.

• Check cylinder seals and glides for wear or damage.

Broken, weak or disconnected idler lever spring. • Replace or reconnect spring. Refer to Figure 45.

Belt routed on wrong side of idler lever. • Reroute belt. Refer to Figure 44.

Oil on cylinder. • Wipe oil from cylinder.

Belt is “inside out.” • Reinstall belt with ribbed surface against cylinder.

Idler arm is binding. • Add grease between idler arm and motor mount.

• Replace idler arm and bolt if needed.

Dryer is overloaded. • Remove some laundry from dryer.

Wrong motor. • Refer to parts manual for correct motor part number.

Wrong belt used on dryer. • Check belt part number against correct part number in the

parts manual.

• Replace belt if needed.

Bent idler arm. • Replace idler arm.

6. DRYER MOTOR DOES NOT STOP

POSSIBLE CAUSE TO CORRECT

Incorrect wiring to motor switch. • Refer to wiring diagram.

Motor centrifugal switch sticky or plugged with

• Remove dust or lint and spray with a cleaner and lubricant.

lint.

Inoperative door switch. • Test switch and replace if inoperative.

Inoperative timer. • Test timer and replace if inoperative.

801805R1 15

Section 3 Troubleshooting Dryer

To reduce the risk of electric shock, fire, explosion, serious injury or death:

• Disconnect all electric power to the machine and accessories before servicing.

• Close gas shut-off valve to gas dryer before servicing.

• Never start machine with any guards/panels removed.

• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the machine is properly grounded.

• Washer motor not grounded! Disconnect electric power before servicing motor.

W502

WARNING

7. DRYER RUNS ONLY WHEN DOOR IS OPEN

POSSIBLE CAUSE TO CORRECT

Door switch miswired. • Rewire door switch. Refer to appropriate wiring diagram.

8. DRYER HEATING ASSEMBLY DOES NOT HEAT OR BURNER DOES NOT IGNITE

POSSIBLE CAUSE TO CORRECT

Improper or inadequate exhaust system. • Refer to Installation Instructions (supplied with dryer)

for exhaust requirements.

Use of plastic or thin foil exhaust duct. • Replace with rigid or semi-rigid metal exhaust duct.

Blown house fuse or tripped circuit breaker. • Check fuses or circuit breakers.

Temperature selector switch set at FLUFF, or

• Reset or test switch and replace if inoperative.

inoperative.

Timer improperly set (set in a cool-down period, or

• Reset timer. Try another cycle.

a no heat cycle).

Inoperative limit thermostat. • Test thermostat and replace if inoperative.

Inoperative drive motor switch. • Test switch and replace if inoperative.

Electric Models: Inoperative heater assembly. • Test heater assembly and replace if cold Ohms do not read

between 9 and 10.5 Ohms.

Electric Models: Inoperative thermal fuse. • Test thermal fuse and replace if inoperative.

Gas Models: Insufficient gas supply. • Check gas shut-off valve in dryer and main gas line valve.

• Open partially closed gas shut-off valve, or correct low gas pressure.

Gas Models: Inoperative gas valve coils. • Test coils and replace if inoperative.

Refer to Paragraph 97.

Gas Models: Inoperative sensor. • Test sensor and replace if inoperative.

Refer to Paragraph 70, step e.

Gas Models: Inoperative igniter. • Test igniter and replace if inoperative.

Refer to Paragraph 99.

Gas Models: Harness not properly connected to gas controls.

• Check harness connections to gas valve coils, sensor and main harness.

• Reconnect as required.

Gas Models: Restricted gas flow in gas orifice. • Clean out gas orifice.

Inoperative cycling thermostat. • Test thermostat and replace if inoperative.

Inoperative timer. • Test timer and replace if inoperative.

Broken, loose, or incorrect wiring. • Refer to wiring diagram.

16 801805R1

Section 3 Troubleshooting Dryer

To reduce the risk of electric shock, fire, explosion, serious injury or death:

• Disconnect all electric power to the machine and accessories before servicing.

• Close gas shut-off valve to gas dryer before servicing.

• Never start machine with any guards/panels removed.

• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the machine is properly grounded.

• Washer motor not grounded! Disconnect electric power before servicing motor.

W502

WARNING

9. IGNITER DOES NOT GLOW (Gas Supply Sufficient) – GAS DRYER MODELS

POSSIBLE CAUSE TO CORRECT

No power to power leads on valve. • Check thermostats, motor switch, and wiring.

Sensor failed with contacts open. • Replace sensor.

Igniter broken or open. • Replace igniter.

10. BURNER IGNITES AND GOES OUT REPEATEDLY – GAS DRYER MODELS

POSSIBLE CAUSE TO CORRECT

Improper or inadequate exhaust system. Weather hood flapper restricted.

•Refer to Installation Instructions (supplied with dryer) for exhaust requirements.

Burner heat not holding sensor contacts open. • Replace sensor, or correct gas supply problem.

Insufficient gas supply. • Check gas supply and pressure.

• Make sure gas shut-off valve is turned on.

Cracked igniter. • Replace igniter and bracket.

Inoperative or intermittent gas valve coils. • Check coils and replace appropriate coils.

Refer to Paragraph 97.

11. IGNITER GLOWS BUT BURNER DOES NOT IGNITE – GAS DRYER MODELS

POSSIBLE CAUSE TO CORRECT

Sensor failed in closed position. • Replace sensor.

Open secondary coil or holding coil. • Replace gas valve (in-warranty), or replace coils (out-of-

warranty). Refer to Paragraph 97.

Insufficient gas supply. • Check gas supply and pressure.

• Make sure gas shut-off valve is turned on.

Igniter and bracket installed improperly on burner tube assembly.

• Loosen screw and properly position igniter and bracket on burner tube assembly.

Sensor installed improperly on burner housing. • Loosen screw and properly position the sensor on the

burner housing.

801805R1 17

Section 3 Troubleshooting Dryer

To reduce the risk of electric shock, fire, explosion, serious injury or death:

• Disconnect all electric power to the machine and accessories before servicing.

• Close gas shut-off valve to gas dryer before servicing.

• Never start machine with any guards/panels removed.

• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the machine is properly grounded.

• Washer motor not grounded! Disconnect electric power before servicing motor.

W502

WARNING

12. DRYER HEATER ASSEMBLY OR BURNER SHUTS OFF PREMATURELY

POSSIBLE CAUSE TO CORRECT

Improper or inadequate exhaust system. Weather hood flapper restricted.

•Refer to Installation Instructions (supplied with dryer) for exhaust requirements.

Gas Models: Insufficient gas supply. • Check main gas line shut-off valve.

• Open partially closed gas shut-off valve, or correct low pressure.

Gas Models: Dryer not properly equipped for type of gas used.

• Refer to “Gas Burner Conversion Procedures” supplied in gas burner conversion kit.

Gas Models: Improperly adjusted burner flame. • Adjust flame. Refer to Paragraph 90.

Cycling off on limit thermostat. • Momentarily connect a jumper wire across thermostat

terminals. If heater element heats or burner ignites when jumper wire is connected, refer to Paragraph 13.

Gas models: Sensor contact closing • Replace sensor (Paragraph 70, step e) or adjust burner

flame. Refer to Paragraph 90.

Inoperative cycling thermostat. • Test thermostat and replace if inoperative.

Inoperative timer. • Test timer and replace if inoperative.

Broken, loose, or incorrect wiring. • Refer to wiring diagram.

13. DRYER HEATER ASSEMBLY OR BURNER REPEATEDLY CYCLES OFF ON LIMIT THERMOSTAT

POSSIBLE CAUSE TO CORRECT

External exhaust system longer or providing greater restriction than recommended.

•Refer to Installation Instructions (supplied with dryer) for exhaust system requirements.

Use of plastic or thin foil exhaust duct. • Replace with rigid or semi-rigid metal exhaust duct.

Clogged lint filter. • Clean lint filter.

Lint in internal dryer ductwork. • Disassemble dryer ductwork and clean.

Lint or other obstruction in external exhaust system. • Disassemble and clean exhaust system.

Hinged damper on exhaust system weather hood

• Free hinged damper or replace weather hood.

not free to open.

Limit thermostat cycling at too low a temperature. • Replace thermostat. Refer to Paragraph 72.

Air leak around loading door. (Door not sealing due to damaged seal or inoperative door catch.)

• Replace seal or catch.

Air leak at blower seal. • Check and replace seal if necessary.

Air leak at cylinder seal(s). • Check and replace seal(s) if necessary.

18 801805R1

Section 3 Troubleshooting Dryer

To reduce the risk of electric shock, fire, explosion, serious injury or death:

• Disconnect all electric power to the machine and accessories before servicing.

• Close gas shut-off valve to gas dryer before servicing.

• Never start machine with any guards/panels removed.

• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the machine is properly grounded.

• Washer motor not grounded! Disconnect electric power before servicing motor.

W502

WARNING

14. DRYER HEATER ASSEMBLY OR BURNER DOES NOT SHUT OFF

POSSIBLE CAUSE TO CORRECT

Improper motor switch. (Control must be in a heat

• Test switch and replace if inoperative.

setting.)

Motor does not stop. • Refer to Paragraph 6.

Incorrect wiring. • Refer to wiring diagram.

Heater assembly shorted. • Remove heater assembly and check for short.

15. CLOTHES DO NOT DRY IN DRYER

POSSIBLE CAUSE TO CORRECT

Heater assembly does not heat or burner does not

•Refer to Paragraph 8.

ignite.

Too much water in articles being dried. • Remove excess water.

Laundry load too large. • Remove part of load. A normal washer load is a normal

dryer load. Maximum load: Dryer cylinder one half full of wet clothes.

Laundry load too small. • Add one or two bath towels to load.

Excessive lint on lint filter. • Clean lint filter.

Heat selector switch or timer inoperative. • Test and replace switch or timer if inoperative.

Improper or inadequate exhaust system. • Refer to Installation Instructions (supplied with dryer)

for exhaust requirements.

Heater assembly or burner shuts off prematurely. • Refer to Paragraph 12.

Gas Models: Gas line pressure too high or too low. • If Natural Gas line pressure to dryer exceeds 8 inch water

column pressure, or is lower than 4 inch water column, ask Gas Company to correct.

Improper belt installation (Low RPM). • Check for proper installation. Refer to Figure 44.

801805R1 19

Section 3 Troubleshooting Dryer

To reduce the risk of electric shock, fire, explosion, serious injury or death:

• Disconnect all electric power to the machine and accessories before servicing.

• Close gas shut-off valve to gas dryer before servicing.

• Never start machine with any guards/panels removed.

• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the machine is properly grounded.

• Washer motor not grounded! Disconnect electric power before servicing motor.

W502

WARNING

16. TIMER DOES NOT ADVANCE IN AUTOMATIC CYCLE

POSSIBLE CAUSE TO CORRECT

Inoperative cycling thermostat. • Test thermostat and replace if inoperative.

Inoperative resistor (Electric Models). • Test resistor and replace if inoperative.

Heater assembly does not heat or burner does not

•Refer to Paragraph 5.

ignite.

Heater assembly or burner cycles off prematurely. • Refer to Paragraph 9.

Improper or inadequate exhaust system. • Refer to INSTALLATION INSTRUCTIONS (supplied

with dryer) for exhaust requirements.

Drying large load. • Timer will not advance until the load is almost dry.

Broken, loose or incorrect wiring. • Refer to wiring diagram.

Timer motor is inoperative. • Select a drying cycle and activate start switch.

• Rotate timer knob until signal sounds.

• Release timer knob.

• Signal should stop within ten minutes. If not, replace timer.

Inoperative seals (air leaks). • Check and replace any inoperative seals in the following

areas:

1. Seal between loading door and front panel.

2. Seal between front panel and front bulkhead.

3. Seal between blower cover and air duct.

4. Seal between cylinder and front or rear bulkhead.

5. Gap between air duct and filter mounting.

20 801805R1

Section 3 Troubleshooting Dryer

To reduce the risk of electric shock, fire, explosion, serious injury or death:

• Disconnect all electric power to the machine and accessories before servicing.

• Close gas shut-off valve to gas dryer before servicing.

• Never start machine with any guards/panels removed.

• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the machine is properly grounded.

• Washer motor not grounded! Disconnect electric power before servicing motor.

W502

WARNING

17. CLOTHES ARE TOO HOT WHEN REMOVED FROM DRYER

POSSIBLE CAUSE TO CORRECT

Improper or inadequate exhaust system. • Refer to Installation Instructions (supplied with dryer)

for exhaust requirements.

Clothes are removed from dryer before cycle has completed.

• Allow the dryer to complete the cycle through the cooldown to the OFF position.

Inoperative cycling thermostat. • Test cycling thermostat and replace if inoperative.

Inoperative timer (not allowing cool-down). • Test timer and replace if inoperative.

Inoperative seals (air leaks). • Check and replace any inoperative seals in the following

areas:

1. Seal between loading door and front panel.

2. Seal between front panel and front bulkhead.

3. Seal between blower cover and air duct.

4. Seal between cylinder and front or rear bulkhead.

5. Gap between air duct and filter mounting.

18. EXCESSIVE CHATTERING OR VIBRATING NOISE IN DRYER

POSSIBLE CAUSE TO CORRECT

Inoperative idler spring. • Remove lower access panel. Set dryer to normal cycle and

allow it to heat to operating temperature. If the belt vibrates as it rotates around the cylinder, the idler arm is making the noise. Replace the idler spring. Refer to Figure 45.

19. EXCESSIVE HUMMING OR WHISTLING NOISE IN DRYER

POSSIBLE CAUSE TO CORRECT

Inoperative blower housing. • If the abnormal operating noise is loudest at the vent exit,

the problem is originating from the blower housing. Replace the current housing and cover. Refer to Figure 43.

801805R1 21

Notes

22 801805R1

To reduce the risk of electric shock, fire, explosion, serious injury or death:

• Disconnect all electric power to the machine and accessories before servicing.

• Close gas shut-off valve to gas dryer before servicing.

• Never start machine with any guards/panels removed.

• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the machine is properly grounded.

• Washer motor not grounded! Disconnect electric power before servicing motor.

W502

WARNING

Section 3

Troubleshooting

Washer Control

20. WASHER ERROR CODE LISTING Error Conditions

If any of the following errors occur, the control enters Error Mode. For all fatal errors, the control will terminate the current cycle, turn off all outputs, and flash two LEDs one second on/one second off to indicate the error.

Motor Failure Error.

Fill Error.

Door Open Error.

Door Lock/Unlock Error.

SPI Communications Error.

If the control receives the motor failure signal from the motor control, the control will enter Error Mode. The control will turn off all outputs and flash the DOOR and FINAL SPIN LEDs one second on/one second off to indicate a motor failure error. This is a fatal error. The machine must be unpowered to clear this error.

If the control receives no full input from the pressure switch indicating the cylinder is full within 30 minutes of starting the fill, the control will enter Error Mode. The control will turn off all outputs and flash the WASH and DOOR LEDs one second on/one second off to indicate a fill error. This is a fatal error. The machine must be unpowered to clear this error.

If the control senses the door open during Run Mode, the control will enter Error Mode. The control will turn off all outputs and flash the WASH and RINSE LEDs one second on/one second off to indicate a door open error. This is a fatal error. The machine must be unpowered to clear this error.

If the door doesn’t lock in 15 seconds in Door Locking Mode or the door doesn’t unlock in 3 minutes in Door Unlocking Mode, the control will enter Door Lock Error Mode. The control will turn off all outputs and flash the DOOR LED one second on/one second off to indicate a door lock/unlock error.

To clear this error in Door Locked Mode the door must either open or lock. If the door locks, the cycle will start normally. If the door opens, the control will revert back to Start Mode.

To clear this error in Door Unlocking Mode the door must unlock or open. If the door unlocks or opens, the control will enter End of Cycle Mode.

This error occurs when there is a problem with communications between the front-end control and the motor control. The control will turn off all outputs and flash the FINAL SPIN and RINSE LEDs one second on/one second off to indicate an SPI communications error. This is a fatal error. The machine must be powered down at this point.

Open/Shorted Temperature Sensor Error (Models equipped with heater)

801805R1 23

Any time the control senses a temperature less than 32°F (0°C) or greater than 212°F (100°C) while heating, the control will turn off the heater output and not attempt to heat. The control will continue and finish the cycle normally. At the end of the cycle the control will flash the HEATING LED one-second on/one second off to indicate an open/ shorted temperature sensor error. This error will be cleared when the door is opened at the end of the cycle.

Section 3 Troubleshooting Washer Control

21. WASHER WILL NOT START – NO LEDS/LIGHTS LIT (NO RESPONSE TO START SWITCH)

(1)

Is there

220-240 VAC

(or 120 Volts)*

to control

transformer?

Yes

(2)

Check wiring to transformer.

Is there 24 VAC

from "H1-1" to "H1-3"

on the machine control ?

Yes

(3)

Is there

continuity across

terminals "H9-3" to "H9-7"

on the machine control when

the start switch is

depressed?

Yes

(4)

Is the

configuration

header plugged

into "H7"?

Yes

Replace machine control.

Replace transformer.

Correct wiring to and/or replace start switch.

Correct wiring on "H7" configuration plug.

*Refer to machine serial plate for correct voltage.

FLW1727S

24 801805R1

Section 3 Troubleshooting Washer Control

WASHER WILL NOT START – NO LEDS/LIGHTS LIT

(NO RESPONSE TO START SWITCH)

220-240 VAC (or 120 VAC) 50/60Hz (SEE MACHINE SERIAL PLATE)

6.8k Ohm

CONFIG. RESISTOR

(Models with 220-240 VAC)

801805R1 25

Section 3 Troubleshooting Washer Control

Is there

220-240 VAC (or

120 Volts)* across

"H4-5" to "H6-5" on

the machine

control?

(1)

(2)

Yes

Is there

220-240 VAC (or

120 Volts)* from the

BLU/BLK wire on door

lock assembly

to neutral?

Replace the secondary door switch.

Replace machine control.

Yes

Is there

220-240 VAC (or

120 Volts)* from the

BLK wire on the secondary

door switch to

neutral?

(3)

Correct wiring to the secondary door switch.

Replace door lock assembly.

Yes

FLW1728S

*Refer to machine serial plate for correct voltage.

22. WASHER WILL NOT START – DOOR OPEN ERROR (WASH/RINSE LEDS FLASHING – DOOR MUST BE CLOSED AND ATTEMPTING TO LOCK)

26 801805R1

Section 3 Troubleshooting Washer Control

220-240 VAC (or 120 VAC) 50/60Hz (SEE MACHINE SERIAL PLATE)

CONFIG. RESISTOR

6.8k Ohm

(Models with 220-240 VAC)

WASHER WILL NOT START – DOOR OPEN ERROR

(WASH/RINSE LEDS FLASHING – DOOR MUST BE CLOSED AND ATTEMPTING TO LOCK)

801805R1 27

Section 3 Troubleshooting Washer Control

23. WASHER WILL NOT START – NO DOOR LOCK (DOOR LED FLASHING)

Is the

"Wash" light

lit?

Yes

(2)

Is there

220-240 VAC (or

120 Volts)* at machine

control terminals

"H4-5" to "H6-5"?

Yes

No No

24 VAC from

"H1-1" to "H1-3"

on the machine

Check secondary door switch, door strike adjustment, and/or wiring. Replace door lock if necessary.

(1)

Is there

Replace transformer.

control?

(3)

Is there

220-240 VAC (or

120 Volts)* at machine

control terminals

"H4-4" to "H6-5"?

Yes

(4)

Is there

220-240 VAC (or

120 Volts)* at the door

lock between the WHT/RED

and the PNK/BLK

wires?

Yes

Replace door lock assembly.

*Refer to machine serial plate for correct voltage.

Replace machine control.

Correct wiring between machine control and door lock assembly.

FLW1729S

28 801805R1

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Speed Queen LTZ99A*N0902 Stacked and Parts Diagram

Specifications and Main Features

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User Manual