Huebsch YU075T Tumbler-Dryer Parts Diagram

Tumble Dryers

TMB795C

50 Pound Capacity 75 Pound Capacity

Starting Serial No. 0904004427

Refer to Page 7 for Model Numbers

Troubleshooting

www.alliancelaundry.com

TMB795C

Part No. 70422101R1

April 2013

Table of

Contents

Section 1 – Safety Information .......................................................... 5

Locating an Authorized Service Person ............................................... 7

Safety Warnings and Decals................................................................. 7

Safety Precautions for Servicing Tumblers .......................................... 7

Section 2 – Introduction ..................................................................... 8

Model Identification ............................................................................. 8

Serial Plate Location............................................................................. 11

Customer Service.................................................................................. 11

Wiring Diagram .................................................................................... 11

How a Tumble Dryer Works ................................................................ 12

Theory of Operation of Instant Electronic Ignition .............................. 12

Theory of Operation ............................................................................. 13

Temperature Sensor .............................................................................. 14

Section 3 – Troubleshooting............................................................... 16

1. Motor Does Not Start............................................................... 17

2. Motor Overload Protector Cycles Repeatedly ......................... 18

3. Motor Runs But Cylinder Does Not Turn................................ 19

4. Motor Does Not Stop ............................................................... 20

5. No Heat Condition (Non-CE and Non-Australian

Models) .................................................................................... 21

6. Heating Element Does Not Heat or Burner Does

Not Ignite ................................................................................. 23

7. Igniter Does Not Shut Off After Gas Ignition —

Gas Burner ............................................................................... 25

8. Heating Element or Burner Shuts Off Prematurely ................. 26

9. Heating Element or Burner Repeatedly Cycles Off

On High Limit Thermostat ............................................................... 27

10. Heating Element or Burner Does Not Shut-Off....................... 28

11. Clothes Do Not Dry ................................................................. 29

12. Tumble Dryer Overheating ...................................................... 30

13. Burners Not Burning Properly — Gas Models........................ 31

14. Loading Door Opens During Operation................................... 32

15. Tumble Dryer Runs But No Steam To Coils —

Steam Models........................................................................... 33

16. Water In Steam Line — Steam Models ................................... 34

17. Door Open Light and Display Flash With Door Closed ......... 35

18. Display Shows “SH” and Signals Sounds ............................... 36

19. Display Shows “OP” and Signal Sounds Three Minutes

After Tumble Dryer is Started ................................................ 37

20. Motor Runs, Time on Drying Timer But No Heat................... 38

21. No Main Burner Flame, Igniter Does Not Spark..................... 40

22. Steam OM Control: No Heat With Cycle Selected,

Unit Running and Calling For Heat ......................................... 41

23. OM and RM Control: No Start With Cycle Selected,

Start Button Pressed and Door Closed..................................... 42

70422101R1 1

24. OM Control: No Display After Selecting One

of the ON/SELECT Keys......................................................... 44

25. Electric OM Control: No Heat With Cycle Selected,

Unit Running and Calling For Heat ......................................... 45

26. Gas OM Control: No Heat With Cycle Selected,

Unit Running and Calling For Heat ......................................... 47

27. OM Control: No Fan Motor Rotation With Cycle

Selected and Start Pressed........................................................ 49

28. OM Reversing Control: No Cylinder Rotation

or Reversing Capabilities......................................................... 51

29. Coin Does Not Fall into Coin Vault or Coin Drop

Sensor Does Not Register that Coin Has Been Entered ................... 53

30. Cylinder Is “Stained” ............................................................... 56

Section 4 – Fire Supression System Troubleshooting...................... 57

31. Tumble Dryer Does Not Operate and Light Is On................... 58

32. Water Discharge, but No Fire .................................................. 59

33. Tumble Dryer Does Not Operate and Light Is Off .................. 60

34. Tumble Dryer Operates, but Water Does Not

Discharge and Light Is On ....................................................... 61

Section 5 – Adjustments ..................................................................... 63

35. Main Gas Burner Air Inlet Shutters (Gas Models) .................. 63

36. Airflow Switch......................................................................... 64

37. Loading Door Switch............................................................... 64

38. Loading Door Catch................................................................. 65

39. Aligning Door Strike................................................................ 65

40. Drive Belt Tension................................................................... 66

41. Cylinder Clearance................................................................... 69

42. Cleaning Coin Drop ................................................................. 70

Section 6 – Micro Display Control (MDC) Troubleshooting.......... 73

43. Coins Ignored When Entered................................................... 73

44. Control Has No Display........................................................... 74

45. Door Open Indicator ................................................................ 76

46. Motor Will Not Start/Run ........................................................ 78

47. Unit Will Not Heat – Gas......................................................... 81

48. Unit Will Not Heat – Steam..................................................... 84

49. Unit Will Not Heat – Electric .................................................. 87

50. Error Codes .............................................................................. 90

Section 7 – NetMaster Troubleshooting –

KT075 Models Only............................................................................ 91

51. No Infrared Communication .................................................... 92

52. Coins Ignored When Entered................................................... 93

53. No Display ............................................................................... 94

54. “Door Open” Indicator............................................................. 96

55. No Start/Run ............................................................................ 98

56. Unit Will Not Heat – Gas......................................................... 100

57. Unit Will Not Heat – Steam..................................................... 103

58. Unit Will Not Heat – Electric .................................................. 105

2 70422101R1

59. CE Models No Display ............................................................ 108

60. CE Models “Door Open” Indicator.......................................... 110

61. CE Models No Start/Run ......................................................... 112

62. CE Models Will Not Heat – Gas.............................................. 114

63. CE Models Will Not Heat – Steam.......................................... 117

64. CE Models Will Not Heat – Electric ....................................... 119

Section 8 – On Premise Micro Control (OM) Troubleshooting ..... 122

65. Control Has No Display........................................................... 123

66. Door Open Indicator ................................................................ 125

67. Motor Will Not Start/Run ........................................................ 127

68. Unit Will Not Heat – Gas......................................................... 130

69. Unit Will Not Heat – Steam..................................................... 133

70. Unit Will Not Heat – Electric .................................................. 135

71. Error Codes .............................................................................. 138

Section 9 – Hybrid Timer Control Troubleshooting ....................... 139

72. Coins Ignored When Entered................................................... 140

73. Control Has No Display – QT and RQ Control Suffixes......... 141

74. Display Flashes “dr” With Door Closed –

QT and RQ Control Suffixes1 ................................................. 43

75. Vend Satisfied, No In Use LED –

SD and SX Control Suffixes1 .................................................. 46

76. In Use LED Lit, No Motor Run –

SD and SX Control Suffixes1 .................................................. 49

77. Motor Will Not Start/Run – SD and SX Control Suffixes....... 151

78. Motor Will Not Start/Run – QT and RQ Control Suffixes...... 153

79. Unit Will Not Heat – Gas – SD and SX Control Suffixes ....... 155

80. Unit Will Not Heat – Gas – QT and RQ Control Suffixes ...... 158

81. Unit Will Not Heat – Electric – QT and RQ Control

Suffixes1 .................................................................................. 61

82. Error Codes .............................................................................. 164

Section 10 – Electronic Control Troubleshooting............................ 165

83. No Infrared Communication .................................................... 166

84. Coins Ignored When Entered L and W Control Suffixes only167

85. No Display ............................................................................... 168

86. “Door Open” Indicator............................................................. 170

87. No Start/Run ............................................................................ 172

88. Unit Will Not Heat – Gas......................................................... 175

89. Unit Will Not Heat – Steam..................................................... 178

90. Unit Will Not Heat – Electric .................................................. 180

91. CE Models No Display ............................................................ 184

92. CE Models “Door Open” Indicator.......................................... 186

93. CE Models No Start/Run ......................................................... 188

94. CE Models Will Not Heat – Gas/Steam................................... 191

95. CE Models Will Not Heat – Electric ....................................... 194

70422101R1 3

Section 11 – LED OPL and UniLinc Troubleshooting.................... 197

96. No Fan Motor Rotation ............................................................ 198

97. No Drive Motor Rotation......................................................... 201

98. Stove and Cabinet Limit Errors ............................................... 204

99. No Display ............................................................................... 206

100. Airflow Errors .......................................................................... 208

101. Fan Motor Centrifugal Switch Error ........................................ 210

102. Close Door Indication .............................................................. 212

103. Moisture Sensor Error .............................................................. 214

Troubleshooting the Moisture Sensor Circuit....................................... 216

104. Troubleshooting at the Control ................................................ 216

105. Troubleshooting From Control to Slip Ring Assembly ........... 218

106. Troubleshooting At Slip Ring Assembly ................................. 220

107. Troubleshooting From Slip Ring Assembly to

Moisture Sensing Baffle and Basket........................................ 220

108. Troubleshooting from Basket Shaft to Moisture

Sensing Baffle with Machine Basket Removed....................... 220

109. Troubleshooting at the Moisture Sensing Baffles

with Machine Basket Removed ............................................... 221

110. Fan Motor Contactor Error ...................................................... 222

111. Rotation Sensor Error............................................................... 224

112. Shorted or Open Thermistor .................................................... 226

113. Fuses and Transformer Configuration Jumper......................... 228

114. Dip Switch/Harness Index Mismatch ...................................... 229

115. Electronic Control Testing ....................................................... 230

Diagnostic Test Descriptions................................................................ 232

116. Diagnostic Testing ................................................................... 239

4 70422101R1

Section 1

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

DANGER

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

WARNING

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

CAUTION

• Failure to install, maintain and/or operate this product 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 product or attempt any servicing unless specifically recommended or published in this Service Manual and unless you understand and have the skills to carry out the servicing.

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

W006R2

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.

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

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.

70422101R1 5

Safety Information

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

• Disconnect electric power to the tumble dryer before servicing.

• Never start the tumble dryer with any guards/panels removed.

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

W240R1

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 product, 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.

W008

CAUTION

IMPORTANT INFORMATION: During the lifetime of a tumbler, it may require service. The information contained in this manual was written and is intended for use by qualified service technicians who are familiar with the safety procedures required in the repair of a tumbler, and who are equipped with the proper tools and testing equipment.

NOTE: The WARNING and IMPORTANT instructions appearing in this manual are not meant to cover all possible conditions and situations that may occur. It must be understood that common sense, caution and carefulness are factors which CANNOT be built into this tumbler. These factors MUST BE supplied by the person(s) installing, maintaining or operating the tumbler.

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

6 70422101R1

Safety Information

Locating an Authorized Service Person

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.

Safety Warnings and Decals

SAFETY WARNINGS and decals have been provided in key locations to remind you of important precautions for the safe operation and maintenance of your tumbler. Please take the time to review these warnings before proceeding with service work.

All decals have been designed and applied to withstand washing and cleaning. Decals should be checked periodically to be sure they have not been damaged, removed, or painted.

Safety Precautions for Servicing Tumble rs

Prior to servicing tumbler:

• Disconnect electrical service and “lockout” to prevent unintentional connection.

• Shut off supply gas valve.

• Allow machine to cool prior to servicing.

After servicing tumbler:

• Control/access panels must be reinstalled.

• Motor/drive/belt guards must be reinstalled.

• Contactor/junction/accessory box covers must

be reinstalled.

• Use a non-corrosive leak detection solution to check all pipe connections for gas leaks. DO NOT USE AN OPEN FLAME TO CHECK FOR GAS LEAKS!

• The loading door switch, lint door switch and airflow switch must be operating properly.

70422101R1 7

Section 2

Introduction

Model Identification

Information in this manual is applicable to these models:

Gas Steam/Thermal Oil Electric

PK050N PT050L PT050N PU050L PU050N SA050L SA050N SK050N ST050D ST050L ST050N SU050L SU050N UA050L UA050N UK050N UT050L UT050N UU050L UU050N YT050L YT050N YU050L YU050N

50

Pound

CA050L CA050N CK050N CT050L CT050N CU050L CU050N DR50G2-BA050L DR50G2-BA050N DR50G2-BK050N DR50G2-BT050D DR50G2-BT050L DR50G2-BT050N DR50G2-BU050L DR50G2-BU050N DR55G2-BA050L DR55G2-BA050N DR55G2-BT050D DR55G2-BT050L DR55G2-BT050N DR55G2-BU050L DR55G2-BU050N GA050L GA050N GK050N GT050L GT050N GU050L

GU050N HA050L HA050N HK050N HT050D HT050L HT050N HU050L HU050N IPD50G2 IT050L IT050N KA050L KA050N KK050N KT050L KT050N KU050L KU050N LA050L LA050N LK050N LT050L LT050N LU050L LU050N PA050L PA050N

CT050S CT050T CU050S CU050T DR50S2-BT050S DR50S2-BT050T DR50S2-BU050S DR50S2-BU050T DR55S2-BT050S DR55S2-BT050T DR55S2-BU050S DR55S2-BU050T GT050S GT050T GU050S GU050T HT050S HT050T HU050S HU050T IPD50S2 IT050S IT050T KT050S KT050T KU050S KU050T LT050S

LT050T LU050S LU050T PT050S PT050T PU050S PU050T ST050S ST050T SU050S SU050T UT050S UT050T UU050S UU050T YT050S YT050T YU050S YU050T

CT050E CU050E DR50E2-BT050E DR50E2-BU050E DR55E2-BT050E DR55E2-BU050E GT050E GU050E HT050E HU050E IPD50E2 IT050E KT050E KU050E LT050E LU050E PT050E PU050E ST050E SU050E UT050E UU050E YT050E YU050E

(continued)

NOTE: Control suffixes listed on next page.

8 70422101R1

75

Pound

CA075L CA075N CK075N CT075L CT075N CU075L CU075N DR75G2-BA075L DR75G2-BA075N DR75G2-BK075N DR75G2-BT075D DR75G2-BT075L DR75G2-BT075N DR75G2-BU075L DR75G2-BU075N DR80G2-BA075L DR80G2-BA075N DR80G2-BT075D DR80G2-BT075L DR80G2-BT075N DR80G2-BU075L DR80G2-BU075N GA075L GA075N GK075N GT075L GT075N GU075L GU075N HA075L

Introduction

(continued)

Gas Steam/Thermal Oil Electric

HA075N HK075N HT075D HT075L HT075N HU075L HU075N IPD75G2 IT075L IT075N KA075L KA075N KK075N KT075L KT075N KU075L KU075N LA075L LA075N LK075N LT075L LT075N LU075L LU075N PA075L PA075N PK075N PT075L PT075N PU075L

PU075N SA075L SA075N SK075N ST075D ST075L ST075N STF75L STF75N SU075L SU075N UA075L UA075N UK075N UT075L UT075N UTF75L UTF75N UU075L UU075N YT075L YT075N YU075L YU075N

CT075S CT075T CU075S CU075T DR75S2-BT075S DR75S2-BT075T DR75S2-BU075S DR75S2-BU075T DR80S2-BT075S DR80S2-BT075T DR80S2-BU075S DR80S2-BU075T GT075S GT075T GU075S GU075T HT075S HT075T HU075S HU075T IPD75S2 IT075S IT075T KT075S KT075T KU075S KU075T LT075S LT075T LU075S

LU075T PT075S PT075T PU075S PU075T ST075S ST075T SU075S SU075T UT075S UT075T UU075S UU075T YT075S YT075T YU075S YU075T

CT075E CU075E DR75E2-BT075E DR75E2-BU075E DR80E2-BT075E DR80E2-BU075E GT075E GU075E HT075E HU075E IPD75E2 IT075E KT075E KU075E LT075E LU075E PT075E PU075E ST075E SU075E UB075E UT075E UU075E YT075E YU075E

NOTE: Control suffixes listed on next page.

70422101R1 9

Introduction

Includes models with the following control suffixes:

3B – reversing DX4 vended KB – reversing single coin OM – OPL micro 3O – DX4 OPL KC – single coin QT – dual digital timer 3V – DX4 vended KW – reversing prep for coin R3 – reversing DX4 OPL 3W – reversing DX4 prep for coin KX – prep for coin RD – reversing DMP OPL 3X – DX4 prep for coin KY – prep for card RE – reversing LED OPL BB – reversing basic electronic, coin KZ – reversing prep for card RM – reversing OPL micro BC – basic electronic, coin LB – reversing network adaptable RQ – reversing dual digital timer BG – basic electronic, OPL mode coin RU – reversing UniLinc OPL BL – basic electronic, central pay LC – network adaptable coin SD – single drop

for coin LW – reversing network adaptable, SX – single drop, prep for coin

BW – reversing basic electronic, prep prep for coin UO – UniLinc OPL

for coin LX – network adaptable, prep for WB – reversing network ready coin BX – basic electronic, prep for coin coin WC – network ready coin BY – basic electronic, prep for card LY – network adaptable, prep for WW – reversing network ready, prep BZ – reversing basic electronic, prep card for coin

for card LZ – reversing network adaptable, WX – network ready, prep for coin DO – DMP OPL prep for card WY – network ready, prep for card DV – DMP vended NC – NetMaster coin WZ – reversing network ready, prep DX – DMP prep for coin NX – NetMaster, prep for coin for card EO – LED OPL NY – NetMaster, prep for card

10 70422101R1

Serial Plate Location

10

2

0

4

0

30

50

60

0

10

5

PU

SH TO

ST

AR

T

HE

AT

COOL D

OWN

HIGH

TEMPERATURE

LOW

15

0

Serial

Plate

TMB2235N

When calling or writing about your product, be sure to mention model and serial numbers. Model and serial numbers are found on serial plate on the rear of machine and inside door.

Introduction

Customer Service

If literature or replacement parts are required, contact the source from which 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.

Wiring Diagram

The wiring diagram is located inside the junction or contactor box.

The wiring diagram part number is in the lower portion of the electrical data on the serial plate.

70422101R1 11

Introduction

TMB2347S

123

How a Tumble Dryer Works

1

2

3

TMB2347S

A tumble dryer uses heated air to dry loads of laundry.

When the motor is started, the exhaust fan pulls room temperature air in through the air intake at the rear of the tumble dryer and over the heat source (burner flame for gas, heating element for electric, and coil for steam).

The heated air moves into the cylinder, where it is circulated through the wet load by the tumbling action of the cylinder.

Theory of Operation of Instant Electronic Ignition

IMPORTANT: The Non-CE Marked Instant Electronic Ignition system will attempt to light the gas by sparking for approximately 15 seconds. If gas ignition does not take place within approximately 15 seconds, the Instant Electronic Ignition control will go into safety lockout and the valve will no longer open until Instant Electronic Ignition control is reset. To reset Instant Electronic Ignition control, remove power from control by opening and closing the tumble dryer door. If condition persists, check that the gas shut-off valve is in “on” position and that the gas service is properly connected.

If condition persists:

1. Check resistance of high tension lead (approximately 1000 ohms/inch), and replace if not within resistance range.

2. Check voltage present at valve.

3. Check that machine is properly grounded.

4. Check the gap between igniter and burner tube (gap should be 1/4-3/8 inch).

5. Check that burner ports are not blocked or plugged under the igniter.

The air then passes through the lint filter, exhaust fan, and is vented to the outdoors.

12 70422101R1

Introduction

1

2

6

5

4

3

Fire Suppression System Theory of Operation

IMPORTANT: The fire suppression system is designed to diminish a laundry fire starting inside a fire suppression system equipped tumble dryer. The fire suppression system is not designed to stop or eliminate high temperature and spontaneous combustion situations. Follow all instructions in the installation manual to ensure the fire suppression system operates properly. Train all operators in the proper preventative maintenance of the fire suppression system.

IMPORTANT: For safety purposes, do not operate tumble dryer if a fire has occurred.

1 Temperature Sensors 4 Lint Screen 2 Fire Suppression System Control Box 5 Load 3 Water Flow to Machine 6 Loading Door

TMB1998N

Figure 1

70422101R1 13

Introduction

3

4

5

6

7

1

2

Temperature Sensor

Two temperature sensors are located in the cylinder area of the tumble dryer to provide temperature readings. Refer to Figure 1 and Figure 2. These temperature sensors will trigger a mode change based on a pre-set temperature trip-point.

TMB1999N

1 Opening for Auxiliary Alarm Cable 5 Light 2 Fuse 6 Reset Button 3 Auxiliary Alarm Fast-On Connection 7 Auxiliary Alarm Fast-On Connection 4 Test Button

Figure 2

TMB1999N

14 70422101R1

Modes of Operation

Power-Up Mode

Sends power to control, begins a stat us check

of the system. Can send control into Idle Mode

or Lockout Mode.

Idle Mode

Machine is operable while it monitors

temperature sensor readings. Control will enter

Power Disconnect Mode if temperature

trip-point is exceeded.

Power Disconnect Mode

Machine is disabled and controls on front will not

operate, will enter Power Disconnect Mode for one

second, then Water On Mode.

Water On Mode

Machine is disabled and controls on front will not operate. Remain in this mode

for 90 seconds, then enter Lockout Mode. Can enter Lockout Error Mode if both

temperature sensors become open, which occ urs when temperature is below

40° F (4° C). Will enter Idle Mode if reset button is pressed. Refer to

Figure 2.

Lockout Mode

Machine is disabled and controls on front will not

op erat e. Control monitors temperat ure readings. Enters

Water On Mode if temperature trip-point is exceeded.

Will enter Idle Mode if reset button is pressed.

Lockout Error Mode

Machine is disabled and controls on front will not

operate. Water dispenses for four minutes. When the

res et butt on is pres s ed, the c ont rol enters I dle

Mode.

If tempe ratu re trip-point exceeded

If both temperature sensors become open

Whe n res et button is pressed

If reset b ut ton is pressed

Introduction

70422101R1 15

Troubleshooting

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

• Disconnect electric power to the tumbler before servicing.

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

• Close steam valve to steam tumbler before servicing.

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

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

W002

WARNING

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

Section 1

16 70422101R1

1. Motor Does Not Start

Motor does

not start

Is electrical

power off or

have any fuses

blown?

Check power

and fuses.

Replace fuses

if necessary.

Is loading door

open or is door

switch

inoperative?

No

Close door or

test switch and

replace if

inoperative.

Is lint door

open or is lint

door switch

inoperative?

Close lint door,

confirm switch

is positioned to

actuate with

door closed.

Is

trunnion shaft

assembly binding in

trunnion housing

bearings?

Replace trunnion

housing bearings.

Is start

circuit

incomplete?

Yes

Press start switch or

test switch and replace

if inoperative.

Yes

Is idler shaft

binding in idler

housing

bearings?

Replace

bearings.

Yes

Is motor

inoperative?

Have motor tested and

replace if inoperative.

Yes

Non-Metered

Models: Is

timer set

properly?

Turn drying timer clockwise

to desired setting.

Non-Metered

Models: Are the

timer or relay

inoperative?

No

Test timer and relay and

replace if inoperative.

Metered Models:

Are proper coins

inserted in

accumulator?

If motor still does not start, replace motor.

Check that proper

coins are inserted.

Yes

No

Yes

No

Yes

No

TMB2264S

No

TMB2264S

Troubleshooting

70422101R1 17

Troubleshooting

TMB1874S

2. Motor Overload Protector Cycles Repeatedly

Motor overload

protector

cycles

repeatedly

Is voltage incorrect?

No

Yes

Refer to the

Installation

Manual for

electrical

requirements.

Is clothes

load too

large?

No

Is clothes

cylinder

binding?

No

Is wiring

inadequate?

No

Is make-up

air

inadequate?

Yes

Remove part of

load.

Check cylinder

for binding.

Refer to

Adjustments

Section for

cylinder

adjustment.

Check with an

electrician to

ensure that

wiring is

adequate.

Refer to

Installation

Manual for

make-up air

requirements.

No

Has lint

built up?

No

Is there broken,

loose or

incorrect wiring?

18 70422101R1

Yes

Clean lint

accumulation

on and around

motor.

Refer to wiring

diagram

located inside

contactor box.

TMB1874S

3. Motor Runs But Cylinder Does Not Turn

TMB1875S

Motor runs but

cylinder does

not turn

Troubleshooting

Is motor

drive

pulley

loose?

No

Is sheave

loose?

No

Is belt

broken

or loose?

No

Is

cylinder

binding?

No

Yes

Confirm key is

in place,

tighten

setscrews.

Confirm key is

in place,

tighten

setscrews and

bushing.

Replace or

adjust belt.

Check cylinder

for binding.

Refer to

Adjustments

Section for

proper cylinder

adjustment.

Does cylinder turn

counterclockwise when

viewed from front of

machine (3 Phase

models only)?

Yes

Switch power

leads L1 and

L2 to correct

rotation.

TMB1875S

70422101R1 19

Troubleshooting

TMB1876S

4. Motor Does Not Stop

Motor does not

stop

Is door

switch

inoperative?

No

Non-Metered

Models: Is timer

or relay

inoperative?

No

Metered

Models: Is accumulator inoperative?

Yes

Test switch and

replace if

inoperative.

Test timer and

relay and

replace if

inoperative.

Te st

accumulator

and replace if

inoperative.

No

Refer to wiring

Is wiring

incorrect?

Yes

diagram

located inside

contactor box.

No

Is motor relay

or motor

contactor

inoperative?

Yes

Check

relay/contactor

and replace if

inoperative.

TMB1876S

20 70422101R1

5. No Heat Condition (Non-CE and Non-Australian Models)

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

• Disconnect electric power to the tumble dryer before servicing.

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

• Close steam valve to steam tumble dryer before servicing.

• Never start the tumble dryer with any guards/panels removed.

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

W002R1

WARNING

Ignition Control Module Function

There are four components to the ignition system: the module, the spark igniter, the high voltage cable and ground wire. When 24 VAC is applied between the TH and GND terminals on the module, the module will send the high voltage signal to the igniter and 24 VAC to the gas valve coils. Gas will hit the sparking igniter and flame will be established. The igniter being engulfed in flame will create a millivolt electric signal that is sent back to the module by the high voltage cable; this is what the module sees as flame recognition. If the millivolt signal is not at the module in ten seconds, the module will go into safety lockout. The voltage will be cut from the igniter and gas valve coils and will not be restored until voltage is cycled at the module.

Troubleshooting

Intermittent Heat Test Procedure

On ignition control modules with date codes higher than 08t2, perform the following test.

Start the tumble dryer and run for 10 minutes (verify that the tumble dryer is heating properly). After the 10 minute cycle, re-start the tumble dryer and once again verify the unit is heating. Repeat this procedure 3 times. If the tumble dryer passes this test, the ignition control module is operating properly and SHOULD NOT be changed. Refer to Troubleshooting Manual for additional service procedures.

70422101R1 21

Troubleshooting

Is the Ignition Control

Module’s red light on?

No

Yes

Refer to

Paragraph 7.

Replace igniter and high

voltage lead. Retest unit. If

unit still does not spark,

replace module.

No

Refer to Paragraph 7

for heat circuit

troubleshooting.

Is there

24 volts AC between

the TH and GND terminals

on the module?

Yes

No

Check wiring between gas valve and module.

If wiring is good,

replace module.

Yes

Is there continuity

between GND terminal on

module and machine?

No No

Does the igniter

spark but no

flame is produced?

No

Yes

Is there

24 volts AC at the gas

valve coils when igniter

is sparking?

Is the igniter

positioned properly

in the flame, and does the

flame look good?

Does the igniter

spark?

Verify that gas is supplied to the machine. If gas and

voltage are present,

replace gas valve or coils.

Does the flame turn

off after igniter

stops sparking?

No

Yes

Replace module.

Adjust position of

igniter and retest.

Yes

Verify machine is

properly grounded.

Replace igniter and

high voltage lead.

Retest unit. If it still

does not sense flame,

replace module.

TMB2395S

5. No Heat Condition

22 70422101R1

6. Heating Element Does Not Heat or Burner Does Not Ignite

Heating element does not heat or

burner does not

ignite

Is there

improper or

inadequate

exhaust or

make-up air?

Refer to

Installation

Manual for

exhaust and

make-up air

requirements.

Are there

blown fuses

or tripped

circuit

breakers?

Check fuses

or circuit

breakers.

Is drying timer not

selected or

inoperative?

Set drying

timer or

replace if

necessary.

Is "No Heat"

selected on

control?

Select

temperature

option.

Is control

relay

inoperative?

Test relay and

replace if

inoperative.

Is thermistor inoperative?

Test thermistor by

removing harness from

thermistor terminals.

Check resistance across

terminals, should read

approximately 50,000

Ohms at 77°F.

Resistance should

decrease with a

temperature increase.

Replace thermistor if

inoperative.

Electric Models:

Are heating

elements or

contactors

inoperative?

Check heat

contactors

and elements.

Replace if

necessary.

Gas Models:

Is gas supply

insufficient?

Open partially closed gas

shut-off valve, or correct

low gas pressure. Check

inlet pressure and

compare to pressure

specified on serial plate.

If pressure cannot be

obtained, contact gas

supplier.

Continued on

Are orifices

incorrect?

Tumbler is equipped

for type of gas

specified

on serial plate at 0-2,000 feet altitude. Refer to Installation

Manual .

Ye s

No

Ye s

No

Ye s

No

Ye s

No

Ye s

No

Ye s

No

Ye s

No

Ye s

No

Ye s

No

TMB2324S-a

Troubleshooting

70422101R1 23

Troubleshooting

Clean lint compartment after every eight hour shift.

Continued from

Are gas valve coils

inoperative?

Test coils and

replace if

available as a

service part,

otherwise

replace valve.

Gas Models:

Is igniter

inoperative?

Gas Models:

Is igniter control

inoperative?

Test igniter and

replace if

inoperative.

Test igniter control and

replace if

inoperative.

Is

airflow switch

inoperative?

Check back draft damper for foreign objects, lint accumulation or other causes that may prevent damper from opening. Check ductwork for lint build-up. Refer to Installation Manual to ensure that ductwork and make-up air openings are sized properly. Check exhaust outlet. If a screen has been installed on the outlet, it may be clogged with lint or frozen over in winter. NEVER install a screen over the exhaust outlet.

Is lint door

panel not

closed

properly?

Open lint door

panel. Place lint

door panel back on

tumbler ensuring a

tight fit.

Is there

broken, loose

or incorrect

wiring?

Refer to wiring

diagram

located inside

contactor box.

Ye s

No

Ye s

No

Ye s

No

Gas and Electric

Models: Is high limit thermostat

inoperative?

Test thermostat

and replace if

inoperative.

Ye s

No

Yes

No

Ye s

No

Ye s

TMB2324S-b

No

TMB2324S-b

6. Heating Element Does Not Heat or Burner Does Not Ignite (continued)

24 70422101R1

7. Igniter Does Not Shut Off After Gas Ignition — Gas Burner

Igniter does not

shut off after

gas

ignition - gas

burner

Is tumbler not

properly equipped for

type of gas being

used?

Tumbler is equipped for type of gas specified on

serial plate at 0-2,000

feet altitude. Refer to

Installation Manual.

Is there

insufficient gas

supply?

Open partially

closed gas shut-off

valve or correct low

gas pressure.

Is burner flame

adjusted

improperly?

Refer to

Adjustments

Section for

recommended

burner flame

adjustment.

Is electrode assembly

incorrectly installed?

Check

assembly for

correct

alignment.

Is igniter control

inoperative?

Test igniter control and

replace if

inoperative.

Is wiring

incorrect?

Refer to wiring

diagram located inside contactor box.

Yes

No

Yes

No

Yes

No

Yes

No

Yes

No

Yes

TMB1878S

Troubleshooting

70422101R1 25

Troubleshooting

TMB1879S

8. Heating Element or Burner Shuts Off Prematurely

Heating

element or

burner shuts off

prematurely

Refer to Is there improper or inadequate exhaust and/or make-up air?

No

Ye s

Installation

Manual for exhaust

and make-up air

requirements.

Gas Models: Is

there insufficient

gas supply?

No

Gas Models: Is tumbler

not properly equipped

for type of gas used?

No

Gas Models: Is

burner flame

improperly adjusted?

No

Ye s

closed gas shut-off

valve or correct low

pressure.

Tumbler is equipped for

Open partially

type of gas specified on

Ye s

serial plate at 0-2,000

feet altitude. Refer to

Installation Manual.

Refer to

Ye s

Adjustments Section for burner flame adjustment.

Is high limit

thermostat

cycling off?

Ye s

Refer to

Paragraph 8.

No

Is there

broken, loose

or incorrect

wiring?

Ye s

Refer to wiring

diagram located inside contactor box.

TMB1879S

26 70422101R1

9. Heating Element or Burner Repeatedly Cycles Off On High Limit

Heating element or

burner repeatedly

cycles off on high

limit thermostat

Is external exhaust system longer than recommended or is

there inadequate

make-up air?

Refer to

Installation

Manual for

exhaust and

make-up air

requirements.

Is lint

screen

clogged?

Remove screen

and clean. Lint

screen and

compartment

should be cleaned

after every eight

hour shift.

Is there lint

in tumbler

ducts?

Clean tumbler

ducts.

Is there lint

in external

exhaust

system?

Disassemble

exhaust

system and

clean.

Is high limit

thermostat

cycling at too

low a

temperature?

Replace

thermostat.

Is lint door

panel not

closed

properly?

Open lint door panel, place lint door panel back

on tumbler

ensuring a tight fit.

Is backdraft damper not

operating?

Check for

foreign

objects, lint

accumulation

or other

possible

obstructions.

TMB1880S

Yes

No

Yes

No

Yes

No

Yes

No

Yes

No

Yes

No

Yes

TMB1880S

Thermostat

Troubleshooting

70422101R1 27

Troubleshooting

TMB1881S

10. Heating Element or Burner Does Not Shut-Off

Heating element or

burner does not

shut-off

Gas Models: Are

there impurities on

gas valve seat,

preventing valve

from closing?

Yes

Replace gas

valve.

No

Is drying

timer, relay or

contactor

inoperative?

No

Is wiring

incorrect?

Yes

Replace timer,

relay or

contactor.

Refer to wiring

diagram

located inside

contactor box.

TMB1881S

28 70422101R1

Huebsch YU075T Tumbler-Dryer Parts Diagram

Specifications and Main Features

Frequently Asked Questions

User Manual