Unimac UUT30L Tumbler-Dryer Parts Diagram

Tumble Dryers

S T A

RT

25

C

HI GH TEMP

MED TEMP

LOW TE M P

NO H E A T

1

2

3

SEL ECT T EMP

INSERT COI N

PUSH STA R

T

1

2

3

SELECT TEMP

I N SER

T

COI N

PUSH START

START

25

C

HI G H TE M P

MED TEMP

LOW TEMP

NO H E AT

T464PZ3A

30 Pound Stack

Through Serial No. 0602004143

Refer to Page 5 for Mo del Numbers

Troubleshooting

Part No. 70291301R3

www.alliancelaundry.com

December 2016

Table of

Contents

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

Locating An Authorized Service Person...............................................6

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

Safety Precautions for Servicing Tumble Dryers..................................7

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

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

Serial Plate Location..............................................................................9

Customer Service...................................................................................9

Wiring Diagram.....................................................................................9

How A Tumble Dryer Works..............................................................10

Section 3 – Troubleshooting..................................................................11

1. Tumble Dryer Does Not Start.....................................................12

2. Motor Does Not Start..................................................................13

3. Motor Overload Protector Cycles Repeatedly............................14

4. Motor Runs But Cylinder Does Not Turn...................................15

5. Motor Does Not Stop..................................................................16

6. Burner Does Not Ignite...............................................................17

7. Burner Ignites and Goes Out Repeatedly....................................20

8. Burner Does Not Shut Off ..........................................................21

9. Clothes Do Not Dry....................................................................22

10. Tumble Dryer Overheating.........................................................24

11. Burner Not Burning Properly............................................... .......25

12. Loading Door Opens During Operation......................................26

13. Cylinder Continues to Spin with Door Open..............................27

14. Coin Does Not Fall into C oin Vault or Coin Drop Sensor

Does Not Register That Coin Has Been Entered........................28

Section 4 – Adjustments........................................................................31

15. Troubleshooting and Cleaning Coin Drop..................................31

16. Troubleshooting Coin Drop........................................................31

17. Cleaning Coin Drop....................................................................31

Section 5 – Electronic Control Troubleshooting.................................35

18. Theory of Operation of Instant Electronic Ignition....................35

19. Cannot Perform Infrared (IR) Communication...........................36

20. Coins Ignored When Entered......................................................37

21. Control Display – Door Open Light “On”..................................38

22. Control Display – “door” Error on 25, 30, Stacked 30 and

35 Pound Tumble Dryers with 24 Volt EDC Controls...............39

23. Control Display – No Visible Display – OPL Microprocessor

Models.........................................................................................40

24. Control Display – No Visible Display – Power On....................41

25. Will Not Start – Electric – Manual Timer...................................42

26. Will Not Start – Electric – Rotary Coin Drop.............................43

27. Will Not Start – Gas – Manual Timer.........................................45

28. Will Not Start – Gas – Rotary Coin Drop...................................46

the expressed written consent of the publisher.

70291301

1

29. Will Not Start – Steam – Manual Timer.....................................48

30. Will Not Start – Steam – Rotary Coin Drop...............................49

31. Will Not Start/Continue Running – EDC Control......................51

32. Will Not Start/Continue Running – OPL Microprocessor

Control ........................................................................................54

33. Will Not Run – Electric – Manual Timer ...................................57

34. Will Not Run – Electric – Rotary Coin Drop..............................60

35. Will Not Run – Gas – Manual Timer..........................................63

36. Will Not Run – Gas – Rotary Coin Drop....................................65

37. Will Not Run – Steam – Manual Timer......................................67

38. Will Not Run – Steam – Rotary Coin Drop ................................69

39. Will Not Heat – Electric – Manual Timer...................................71

40. Will Not Heat – Electric..............................................................73

41. Will Not Heat – Electric – Rotary Coin Drop (With and

Without Time Delay Board) .......................................................75

42. Will Not Heat – Electric/Gas – OPL Microprocessor.................77

43. Will Not Heat – Gas – EDC Models...........................................80

44. Will Not Heat – Gas – Manual Timer.........................................82

45. Will Not Heat – Gas – Rotary Coin Drop...................................84

46. Will Not Heat – Steam – EDC Models.......................................86

47. Will Not Heat – Steam – Manual Timer.....................................88

48. Will Not Heat – Steam – OPL Microprocessor..........................90

49. Will Not Heat – Steam – Rotary Coin Drop...............................93

Section 6 – Micro Display Control Troubleshooting..........................95

50. Coins Ignored When Entered......................................................95

51. Control Has No Display..............................................................96

52. Door Open Indicator...................................................................98

53. Motor Will Not Start/Run.........................................................100

54. Unit Will Not Heat – Gas..........................................................104

55. Unit Will Not Heat – Steam......................................................107

56. Unit Will Not Heat – Electric...................................................110

57. Error Codes...............................................................................113

Gas Models

Schematic........................................................................................114

Connection Diagram.......................................................................115

Steam Models

Schematic........................................................................................116

Connection Diagram.......................................................................117

Electric Models

Schematic........................................................................................118

Connection Diagram.......................................................................119

Section 7 – NetMaster Troubleshooting ............................................120

58. No IR Communication..............................................................120

59. Coins Ignored When Entered....................................................121

60. Control Has No Display............................................................122

61. Door Open Indicator.................................................................125

62. Motor Will Not Start/Run.........................................................128

2

70291301

63. Unit Will Not Heat – Gas..........................................................134

64. Unit Will Not Heat – Steam......................................................138

65. Unit Will Not Heat – Electric...................................................142

70291301

3

Notes

4

70291301

Section 1

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

DANGER

Warning indicat es 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 i n 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 precauti ona ry st at em ent s (“ IM PORTANT” and “NOTE”) are followe d 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 follow ed.

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

70291301

5

Safety Information

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

• Disconnect electric power to the 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.

W240

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 t umble dryer, 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 tumble dryer, 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 tumble dryer. These factors MUST BE supplied by the person(s) installing, maintaining or operating the tumble dryer.

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

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.

6

70291301

Safety Information

Safety Warnings and Decals

SAFETY WARNINGS and decals have been provided in key locations to re mind you of important prec autions for the safe ope ra ti on a nd mai nt ena nce of your tumble dryer. Please take the time t o review these warnings before proceeding with service work.

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

Safety Precautions for Servicing Tumble Dryers

Prior to servicing tumble dryer:

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

• Shut off supply gas valve.

• Allow machine to cool p rior to servicing.

After servicing tumble dryer:

• Control/access panels must be reinstalled.

• Motor/drive/belt guards must be reinstalled.

• Contactor/junction/acces sory box covers mus t

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.

70291301

7

Section 2

Introduction

Model Identification

Information in this manual is applicable to these models:

Gas Steam Electric

HTT30L HTT30N HUT30L HUT30N IPD30STG2-ITT30L IPD30STG2-ITT30N LTT30L LTT30N MTT30N NTT30N PAT30L PAT30N PTT30L PTT30N

T30

CHD30STG2-CA T30L CHD30STG2-CA T30N CHD30STG2-CTT30L CHD30STG2-CTT30N CHD30STG2-CUT30L CHD30STG2-CUT30N DRST30G2-BAT30L DRST30G2-BAT30N DRST30G2-BTT30L DRST30G2-BTT30N DRST30G2-BUT30L DRST30G2-BUT30N HAT30L HAT30N HTT30D

PUT30L PUT30N SAT30L SAT30N STT30L STT30N SUT30L SUT30N UAT30L UAT30N UTT30L UTT30N UUT30L UUT30N

CHD30STS2-CTT30S CHD30STS2-CUT30S DRST30S2-BTT30S DRST30S2-BUT30S HTT30S HUT30S IPD30STS2-ITT30S PTT30S PUT30S STT30S SUT30S UTT30S UUT30S

CHD30STE2-CTT30E CHD30STE2-CUT30E DRST30E2-BTT30E DRST30E2-BUT30E HTT30E HUT30E IPD30STE2-ITT30E PTT30E PUT30E STT30E SUT30E UTT30E UUT30E

Includes models with the following control suffixes:

3O – DX4 OPL CX – prep for coin drop NX – NetMaster coin ready 3V – DX4 vended CY – prep for card NY – NetMaster card ready 3X – DX4 prep for coin EC – EDC electronic coin OM – OPL micro BC – basic electronic, coin EX – EDC coin ready ZC – NetMaster coin network BL – basic electronic, central pay EY – EDC card ready ZR – NetMaster card network BX – basic electronic, prep for coin MT – manual timer ZX – NetMaster coin ready network BY – basic electronic, prep for card NC – NetMaster coin ZY – NetMaster card ready network CD – rotary coin drop NR – NetMaster card

8

70291301

Serial Plate Location

MODEL NO:

SERIAL NO:

V-/ HERTZ/ PHASE

AMPS, WIRES + GROUND

TOTAL kW, MOTOR kW

REQ'D CIRCUIT BREAKER: AMPS

FAN OUTPUT: @MAX "WC STATIC PRESSURE

EQUIPPED FOR: GAS@ "WC MANIFOLD PRESS.

MIN SUPPLY PRESSURE:

ANS 72152 CLOTHES DRYER. VOL II

CGA 72

AMPLFIEDRER

TESTED FOR NATURAL & LIQUID PETROLEUM GASSES

MAX SUPPLY PRESSURE:

"WC. "WC.

INPUT: BTU/hr @ BTU/cu.ft.

MADE IN U.S.A./FABRIQUE AU ETATS UNIS/FABRICADO EN LOS ESTADOS UNIDOS 70051001

TMB1961P

When calling or writing for information about your product, be sure to mention model and seri al numbers. Model and serial number s are f ound on the seria l plat e on the rear of the machine an d inside the uppe r loading door hinge.

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 th e nearest authorized parts distributor.

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

Wiring Diagram

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

Models starting Serial No. 0309____ or late r will have the wiring diagram p art number i n the lower portion of the electrical data on the serial plate.

70291301

9

Introduction

1

2

3

T002CE3A

1

2

3

How A Tumble Dryer Works

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 cyli nder, where it is circulated through the wet load by the tumbling action of the cylinder.

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

10

70291301

Section 3

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

Troubleshooting

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

70291301

11

Troubleshooting

Tumbler Does

Not Start

Is motor

relay

inoperative?

Test relay and

replace if

necessary.

Yes

Is

loading door

open?

No

Close loading

door

completely.

Is

drying timer in

an off position

(Manual Timer

Models)?

Yes

Turn drying

timer on.

Check that

proper amount

of coins are

inserted.

Is the

PUSH-TO-

START button

not properly

activated

(Manual Timer

Models)?

Press and

hold PUSH-TO-

START button

for three

seconds.

Is the

electrical power

off or circuit

breaker or fuse

blown?

Close and

lock lint drawer.

Check fuse

(in junction box)

and replace if

necessary.

Is there a

blown fuse

on tumbler?

Test coin drop

and replace if

inoperative.

Yes

Is coin drop

inoperative?

Is there an

incorrect

amount of coins

inserted into

coin drop?

No

Yes

No

Yes

Check power

supply, or

replace fuses.

No

Is the lint

drawer

open?

No

Yes

No

Yes

TMB2207S

Yes

No

1. Tumble Dryer Does Not Start

12

70291301

2. Motor Does Not Start

Motor Does

Not Start

Is the

electrical power

off or circuit

breaker fuse

blown?

No

Is the loading door switch or lint

drawer switch not

closed or switch

inoperative?

Is the

door switch

improperly

adjusted?

No

Check power

supply, or replace

fuses.

Yes

Close door,

drawer or test

switch and

replace if

inoperative.

Yes

Refer to Installation

Manual for door

switch adjustment.

Yes

Is the start

circuit not

complete?

Yes

Press and hold

PUSH-TO-START

button for three

seconds.

Is the motor

inoperative?

Yes

Have motor tested

and replace if

inoperative.

No

Is the

cylinder or

cylinder motor

binding?

No

Refer to wiring

diagram.

Yes

Replace fan or

motor assembly.

Yes

Replace cylinder,

bearing, rollers, or

motor assembly.

Yes

Is the

transformer

inoperative?

Yes

Test and replace if

necessary.

Is the

motor relay

inoperative?

Yes

Test relay and replace

if inoperative.

Is

the fan or fan

motor

binding?

Is there

broken, loose,

or incorrect

wiring?

No

Is the

airflow switch

inoperative

(Hyrid Timer

Models)?

Yes

Test switch,

replace or adjust

as required.

No

TMB2208S

No

Troubleshooting

70291301

13

Troubleshooting

TMB1904S

Motor Overload

Protector

Cycles

Repeatedly

Is voltage

correct?

Refer to

Installation

Manual for

electrical

requirements.

Yes

Is clothes

load too

large?

No

Remove part of

load.

Yes

Is clothes

cylinder

binding?

Check cylinder

for binding.

Is wiring

adequate?

No

Yes

No

Check with local power company to

ensure that

wiring is

adequate.

Yes

Is make-up

air adequate?

Refer to

Installation

Manual for

make-up air

requirements.

No

Yes

Is there lint

buildup around

tumbler or poor

maintenance?

Clean lint

accumulation

on and around

the motors.

No

Yes

Is there

broken, loose

or incorrect

wiring?

Refer to wiring

diagram.

No

Yes

3. Motor Overload Protector Cycles Repeatedly

14

70291301

4. Motor Runs But Cylinder Does Not Turn

Motor Runs But Cylinder

Does Not Turn

Is cylinder

belt

broken?

Replace

cylinder belt.

Is cylinder

binding?

Check cylinder

for binding.

Yes

No

Yes

TMB1905S

Troubleshooting

70291301

15

Troubleshooting

Motor Does

Not Stop

Is the door

switch or lint

drawer switch

not working

properly?

Test switches and replace if

inoperative.

Is coin drop not working

properly?

Test coin drop

and replace if

inoperative.

Is wiring

incorrect?

Refer to wiring

diagram.

Is electronic

control

inoperative?

Replace

electronic

control.

Is motor

relay

inoperative?

Test relay and

replace if

inoperative.

Yes

No

Yes

No

Yes

No

Yes

No

Yes

TMB1906S

5. Motor Does Not Stop

16

70291301

6. Burner Does Not Ignite

Burner Does

Not Ignite

Is there

an improper or

inadequate exhaust

system?

No

Are there

blown fuses or

tripped circuit breakers

in external electric

supply line?

Is

drying

selector in the

“Cool Down”

portion of

cycle?

No

Refer to

Installation

Manual for

exhaust system

requirements.

Yes

Check fuses or

circuit breaker.

Yes

Reset switch on microprocessor.

Yes

Is the cabinet thermostat

inoperative?

Yes

Test thermostat

and replace if

inoperative.

Is

there an

insufficient gas

supply?

Yes

Open partially closed gas shut-off valve, or

correct low gas

pressure. Check

manifold pressure

and adjust to

pressure specified on

serial plate. If

pressure cannot be

obtained, have your

local gas company

check main gas

pressure.

No

Is there

inadequate

ductwork and

make-up

air?

No

Tumbler is equipped

for type of gas

specified on serial

plate. If orifices are

different from that

specified on serial

plate, obtain and

install correct orifices.

Yes

Clean lint

compartment. Check

damper for lint

accumulation. Check

ductwork for lint

buildup.

Yes

Refer to Installation

Manual to ensure that ductwork and

make-up air

openings are sized

accurately.

Yes

Is there

lint

buildup?

Are the

orifices

incorrect?

TMB2209S-a

No

Continued on

stove limit thermostat 1 inoperative?

Test thermostat 1

and replace if

inoperative.

No

Yes

Is

stove limit thermostat 2 inoperative?

Test thermostat 2

and replace if

inoperative.

No

Yes

Troubleshooting

70291301

17

Troubleshooting

Continued from

there an

improper igniter

to burner tab

clearance?

Are valve coils

inoperative?

No

Clearance

should be

0.110 - 0.140

inch (2.79 - 3.55

mm).

Yes

Check valve

coils and

replace if

necessary.

Yes

Is

there a blown

fuse on

tumbler?

Yes

Check fuse

(located in

control box)

and replace if

necessary.

Is

gas shut-off

valve in the

closed

position?

Yes

Open shut-

off valve.

Is motor switch inoperative?

No

Replace IEI

control.

Yes

Replace motor.

Yes

Is the

IEI control

inoperative?

TMB2209S-b

Yes

Connect

ground wire

to ground

terminal.

Is the

ground wire

from Instant

Electronic Ignition

(IEI) board not

connected to

ground

terminal?

No

Is

there broken,

loose or incorrect

wiring?

Yes

Refer

to wiring

diagram.

Is the lint

drawer not

closed

properly?

Yes

Unlock and open

lint drawer. Close

drawer ensuring a

tight fit, then lock.

Is the

airflow switch

inoperative?

Test switch

and replace

if inoperative.

Yes

No

Continued on

6. Burner Does Not Ignite (continued)

18

70291301

6. Burner Does Not Ignite (continued)

Continued from

as needed.

Is

wrong

transformer

configuration

harness

installed?

Yes

Check incoming

voltage and install

correct

configuration

harness.

TMB2209S-c

Is there

an inoperative

microprocessor or

hybrid timer?

Yes

No

Is Instant

Electronic

Ignition (IEI)

control in safety

lockout?

Reset IEI control by opening and closing

loading door. (Non-

CE models only)

Reset IEI by

pressing reset

button on back of

unit. (CE models

only)

No

Yes

Troubleshooting

70291301

19

Troubleshooting

Burner Ignites and

Goes Out Repeatedly

Is there

insufficient gas

pressure?

Check gas

supply and

pressure.

Yes

Is the cabinet

thermostat

inoperative?

Yes

Test thermostat

and replace if

inoperative.

Is the

exhaust system

improper or

inadequate?

Yes

Refer to

Installation Manual

for exhaust system

requirements.

No

Does

tumbler have

improper

orifices?

Yes

Tumbler is equipped for type of gas specified on

serial plate. If orifices

are different from that

specified on serial plate,

obtain and install

correct orifices.

No

Is there excessive igniter to burner

clearance?

Yes

Clearance

should be

0.110 - 0.140 inch (2.79 - 3.55 mm).

Is

there

inadequate

make-up air?

Yes

Refer to

Installation Manual

for make-up air

requirements.

No

Is the

thermistor

inoperative?

Yes

No

Replace

thermistor.

Is the control

heater relay

malfunctioning?

Yes

Replace control.

No

Is there

broken, loose or

incorrect

wiring?

Yes

Refer to wiring

diagram.

No

Yes

Repair damper to

working order.

Are the

back draft dampers

locked in closed

position?

No

TMB1908S

No

Is

stove limit

thermostat 1

inoperative?

Test thermostat 1

and replace if

inoperative.

No

Yes

Is

stove limit

thermostat 2

inoperative?

Test thermostat 2

and replace if

inoperative.

No

Yes

7. Burner Ignites and Goes Out Repeatedly

20

70291301

8. Burner Does Not Shut Off

Burner Does Not Shut Off

Are there

impurities on gas

valve seat,

preventing valve

from closing?

Replace gas

valve.

Is wiring correct?

Refer to wiring

diagram.

Is control heater

relay

malfunctioning?

Replace

control.

Yes

No

Yes

No

Yes

TMB1909S

Troubleshooting

70291301

21

Troubleshooting

Clothes Do Not

Dry

Is there

enough heating

time allocated for

the load?

Yes

Is the burner

igniting?

Start cycle again

with enough time to

dry load.

No

Refer to

Burner Does Not

Ignite flowchart.

No

Remove excess

water.

Is

the clothes

load too

large?

Yes

Remove part of load. Maximum

load is 30 pound

dry weight (cotton

load) for 30 pound

Tumbler, etc.

Is the

exhaust system

improper or

inadequate?

Yes

Refer to Installation

Manual for exhaust

system equirements.

No

Is

the voltage

incorrect?

No

Refer to

Burner Ignites

and Goes Out

Repeatedly

flowchart.

Yes

Set selector

for higher

setting.

Yes

Refer to Installation Manual for electrical

requirements.

Yes

Is there

inadequate

make-up

air?

Yes

Refer to Installation Manual for make-up

air requirements.

Is the

exhaust duct to

the outside

blocked?

Yes

Clean duct to

remove blockage.

Is

the drying

selector

improperly

set?

Does

the burner ignite

and go out

repeatedly?

No

TMB2210S-a

No

Continued on

too much water in

articles being

dried?

Yes

No

Yes

No

9. Clothes Do Not Dry

22

70291301

9. Clothes Do Not Dry (continued)

Continued from

clogged?

Is the thermistor

inoperative?

No

Clean lint screen.

Yes

Replace thermistor.

Yes

Is the

exhaust

damper

binding?

Yes

Adjust damper so it

turns freely.

Is the

cylinder speed

too fast?

Yes

Check belt is not

riding on outer

diameter of motor

pulley.

TMB2210S-b

No

Troubleshooting

70291301

23

Troubleshooting

10.Tumble Dryer Overheating

Tumbler

Overheating

Does

tumbler

have incorrect

main burner

orifices?

No

Is gas

pressure too high or

low?

No

Is the

make-up air

inadequate?

Ye s

Obtain and install

correct orifices.

Adjust gas pressure

as specified on

serial plate.

Refer to Installation

Manual for make-up

air requirements.

Is the

thermistor

sensor

inoperative?

No

Is the exhaust damper

binding?

No

Is the

control heater

relay

malfunctioning?

No

Ye s

Check wiring to

ensure thermistor

is connected.

Replace

thermistor if

necessary.

Remove lint build-

up on thermistor.

Adjust damper

so it turns

freely.

Replace control.

No

Is there

lint buildup?

No

Is the

exhaust system

restricted or

inadequate?

No

Ye s

Clean lint

compartment. Check

damper for lint

accumulation. Check

ductwork for lint

buildup.

Remove obstruction

or lint build up from

exhaust ductwork. Refer to Installation Manual for exhaust

system

requirements.

Are the safety covers missing, allowing

cool air to enter

tumbler?

No

Is the

lint screen

clogged with

fabric

softener?

No

Are there

holes in cabinets

due to foreign

objects?

Ye s

Replace covers.

Replace lint

screen.

Repair/replace

cabinet

components.

TMB1911S

24

70291301

11.Burner Not Burning Properly

Burner Not Burning

Properly

Is there lint/dirt in

burner tube?

Is the gas

pressure too high

or low?

No

Disassemble

burner and

blow out lint/dirt.

Yes

Check serial

plate on back of

tumbler for

correct gas

pressure.

Yes

Is

the airflow

switch not

functioning

properly?

Yes

Replace airflow

switch.

Is there

inadequate

make-up

air?

Yes

Refer to

Installation Manual

for make-up air

requirements.

TMB2211S

No

Yes

Clean off lint.

Is there lint buildup

around gas valve

spud?

No

Does

the tumbler have

incorrect

orifices?

Yes

Tumbler is equipped

for the type of gas specified on serial

plate. If orifices are

different from that

specified on serial

plate, obtain and

install correct

orifices.

Is the

exhaust duct

restricted or

blocked?

Yes

Disassemble

and clean

exhaust system.

No

Troubleshooting

70291301

25

Troubleshooting

Loading Door

Opens During

Operation

Is tumbler

improperly

leveled?

Refer to Installation

Manual for leveling

leg adjustment.

Is clothes

load too

large?

Remove part of load

and restart tumbler.

Is loading

door strike

adjusted

incorrectly?

Refer to

Adjustments

Section for strike

adjustment.

Yes

No

Yes

No

Yes

TMB1913S

NOTE: All tumble dryer panels must be in place and on the machine for proper operation.

12.Loading Door Opens During Operation

26

70291301

13.Cylinder Continues to Spin with Door Open

Cylinder

Continues To

Spin With Door

Open

Is door

switch

inoperative?

Replace

door switch.

Yes

TMB2186S

Is

motor relay

inoperative?

Replace relay in control box.

No

Yes

NOTE: All tumble dryer panels must be in place and on the machine for proper operation.

Troubleshooting

70291301

27

Troubleshooting

Coin Does Not Fall Into Coin Vault or Coin Drop Sensor Does Not

Register That Coin

Has Been Entered

Is proper electrical

power

supplied to

coin drop?

Incorrect electrical

connection may

prevent coins from

registering in coin drop.

Refer to wiring

diagram.

No

Is

machine

level?

Machines that are not

level may prevent coins

from following through required check stages

of drop. Refer to

Installation Manual

for instructions on

leveling machine.

Is coin

drop

clean?

Residue or lint build-up

may prevent coins from

following through

required check stages

of drop. Clean coin

drop.

Yes

No

Yes

No

TMB1915S

Is sensor

operative?

Yes

Replace coin drop

sensor.

No

14.Coin Does Not Fall into Coin Vault or Coin Drop Sensor Does Not Register That Coin Has Been Entered

IMPORTANT: Never use oil to correct coin drop problem. Oil residue will prevent coins from rolling properly.

IMPORTANT: Do not bend or damage mechanical parts within coin drop.

28

70291301