ALLIANCE CHD30STG2-CTT30N, CHD30STG2-CAT30L, CHD30STG2-CAT30N, CHD30STG2-CTT30L, CHD30STG2-CUT30L Troubleshooting Manual

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

www.alliancelaundry.com

Part No. 70291301R3

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

Troubleshooting

Coin Drop Cover

Coin Return Button

Tension Spring

MIX6B

Coin Drop Cover

DRY2088N

Cover Catch

Tension Spring

Small Flathead Screwdriver

Right Side of Tension Spring

Left Tab

MIX3B

Tabs

Center Tab

Troubleshooting Coin Drop

If coin drop is not accepting coins, perform the following:

1. Clean coin drop. Refer to Paragraph 17.

2. On electronic coin drops with an old-style tension sp ring (shown in Figure 1 and Figure 3), test and replace tension spring using the following instructions.

Remove Coin Drop From Machine

1. Disconnect electrica l power to machin e and drop.

2. Remove coin drop from machine.

Test Tension Spring

1. Push coin return button to open and close coin drop cover to clear possible coin jams. Refer to Figure 1.

Replace Tension Spring

1. Move tension spri ng d o wnwar d u nti l cover catch is free. Refer to Figure 3.

Figure 3

2. Open cover for coin drop.

3. Place a small flathead screwdriver under right side of tension spring and lift up. Refer to Figure 4.

MIX7B

Figure 1

2. Manually hold down coin drop cover and insert coin. Refer to Figure 2.

Figure 2

3. If coin drop now operates properly, replace tension spring using instructions on following pages.

MIX2B

Figure 4

4. Use screwdriver to move spring approximately 3 mm to left.

5. Lift spring over left tab. Refer to Figure 4.

6. Rotate spring clock wise, 4 0 to 60 de grees, un til it is free from right tabs. Refer to Figure 5.

70291301

Figure 5

29

Troubleshooting

MIX4B

Clip

MIX8B

Slot

MIX5B

Small Flat

Screwdriver

Center

Tab

Left Tab

7. Use screwdriver to remove spring from center tab. Refer to Figure 5.

8. Lift spring, with attached clip, off drop.

9. Remove clip from spring. Refer to Figure 6.

Figure 6

10. Attach clip to new tension spring, Part No. 209/ 00598/02.

11. Place clip, installed on spring, in slot on coin drop. Refer to Figure 7.

12. Use a small flathead screwdriver to push spring under center tab. Refer to Figure 8.

Figure 8

13. Lift spring gently to place in position under left tab.

14. Push spring to right until it snaps into position. Refer to Figure 4.

15. Close coin drop cover.

16. Move tension spring over cover catch. Refer to Figure 3.

Figure 7

Reinstall Coi n Drop Into Machine

1. Reinstall coin drop into machine.

2. Reconnect electrical power to machine and drop.

3. Add a coin to drop to verify that coin drop is operating properly and that electrical connection is working properly.

30

70291301

Section 4

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

1

Adjustments

15.Troubleshooting and Cleaning Coin Drop

When a coin is placed into coin slot, the coin should roll down drop and be heard dropping into coin vault. If coin does not fall into coin vault or if coin drop sensor does not register that coin has been entered, follow troubleshooting instructions below.

16.Troubleshooting Coin Drop

Is proper electrical power supplied to coin drop? Incorrect electr ical connection may pre vent coins from registering in coin drop. Refer to wiring diagram and service manual for proper connections.

Is machine level? Machines that are not level may prevent coins from following through required check stages of drop. Refer to Installation Instructions for instructions on leveli ng machine.

Is coin drop clean? Residue or lint build-up may prevent coins from following through required check stages of drop. Refer to Cleaning Coin Drop instructions below.

levels of residue or lint build-up. Follow the instructions below for cleaning the coin drop.

1. Disconnect electrica l power to mach ine and dr op.

2. Remove coin drop from machine.

3. Open cover of c oin drop. Refer to instruc tions f or your coin drop below.

Coin Drops with Old-Style Spring

Refer to

Figure 9

.

IMPORTANT: Never use oil to correct coin drop problems. Oil residue will prevent coins from rolling proper ly.

IMPORTANT: Do not bend or damage mec hani cal parts within coin drop.

17.Cleaning Coin Drop

The electronic coin drop should be cleaned once a year . Clea n the dr op more oft en if it i s exposed to high

70291301

1 Spring

Figure 9

a. Move spring downward until cover catch is

free. Refer t o Figure 10.

NOTE: Do not lift or overbend the spring in any direction.

DRY2088N

31

Adjustments

1

DRY2408N

1

1 Catch

Figure 10

b.Open cover for coin drop. Refer to

Figure 11.

DRY2088N

Coin Drops with New-Style Spring

Refer to

Figure 12

1 Spring

.

Figure 12

c. Open cover of coin drop. Refer to Figure 13.

DRY2404N

1 Cover

Figure 11

NOTE: Do not overbend the spring by opening cover too far.

DRY2408N

DRY2089N

1 Spring

Figure 13

4. Clean the coin path with a soft brush and wipe exposed surfaces with an alcohol moistened cloth. Refer to Figure 14 and Figure 15.

32

70291301

Adjustments

DRY2090N

OLD-STYLE SPRING COIN DROP

DRY2405N

NEW-STYLE SPRING COIN DROP

1

.

DRY2407N

1 Light Sensors

Figure 14

DRY2090N

7. Close cover for coin drop.

Figure 17

8. Coin Drops with OLD-Style Spring – Move spring back over cover catch.

9. Reinstall coin drop into machine.

10. Reconnect electrical power to machine and drop.

11. Add a coin to drop to verify that coin drop is operating properly and that electrical connection is working properly.

Figure 15

5. Clean residue from coin rail with an alcohol moistened cloth. Refer to Figure 16.

1 Alcohol Moistened Cloth

Figure 16

6. Clean light sensors with a soft brush or air spray duster. Refer to Figure 17.

DRY2405N

DRY2406N

70291301

33

Adjustments

Notes

34

70291301

Section 5

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

Electronic Control Troubleshooting

18.Theory of Operation of Instant Electronic Ignition

IMPORTANT: The Non-CE Marked Instant Electronic Ignition system wi ll attempt to light the gas by sparking for approximately 12 seconds. If gas ignition does not take place within approximately 12 seconds, the Instant Electronic Ignition control will go into safety lockout and the valve will no longer open u ntil 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, chec k that the gas s hut- off val ve is in “on” position and that the gas service is properly connected.

If condition persists:

a. Check resistance of high tension lead

(approximately 1000 ohms/inch), and replace

if not within resistance range. b. Check voltage present at valve. c. Check that machine is properly grounded. d. Check the igniter gap (gap should be .110 to

.140 inch). e. Check that burner ports are not blocked or

plugged under the igniter.

70291301

35

Electronic Control Troubleshooting

Check the following:

- IR communication disabled by manual programming.

- Is the IR window on the control covered or blocked.

- if needed, change electronic control board.

Check the following:

- low battery on microwand.

- is the IR window covered or blocked on the control.

- if needed replace the

electronic control.

- is the IR cap properly attached

to the microwand.

Communication

sequence checks

out.

Attempt to

communicate with

the electronic

control from the

microwand.

Aim microwand

closer and try again.

Is there a response of

any kind from the

electronic control?

Does the control

respond?

Does the electronic

control display E:OF

or -C-?

NO

YES

-C-

E:OF

NO

YES

Single and stacked.

Gas and electric heat.

Single and three phase

supply.

T027D

19.Cannot Perform Infrared (IR) Communication

T027D

36

70291301

20.Coins Ignored When Entered

Does the display on the

EDC control increment

properly?

Is connector H2 firmly

seated in its receptacle?

Is the 3 pin connector

between coin drop and

control connected

correctly?

Are wires exiting coin

drop optical sensor cracked or broken?

Exit diagnostic

testing and reset

control. (Prompting

for vend price)

Reconnect and run

diagnostic test

again.

Reconnect and run

diagnostic test

again.

Replace coin drop

or optic switch.

Replace coin drop or optic switch.

If problem still

exists then replace

the EDC control.

Start coin drop

diagnostic tests.

YES

NO

YES

NO

YES

NO

Single and stacked units. Gas and electric heat. Single and three

phase voltage.

TMB1822S

Electronic Control Trouble shooting

TMB1822S

70291301

37

Electronic Control Troubleshooting

Is there voltage at

H4-6 on the

electronic

control?

Replace

electronic

control.

Is there power supplied

to the unit?

NO

Is there voltage to input

of primary fuses?

Is there voltage to output side of the

primary fuses?

Is there voltage across

terminals 1 & 2 of

transformer primary?

Plug unit in and

run it.

Correct wiring between primary fuses and power

supply.

Replace primary

fuse(s).

Correct wiring between primary

fuses and

transformer.

Is there voltage across

terminals 2 & 3 of

transformer

secondary?

Replace

transformer.

Is there voltage at

the input of the

secondary fuse?

Is there voltage to

output side of

secondary fuse?

Correct wiring

between secondary

fuse and

transformer.

Replace secondary

fuse.

NO

YES

(1)

(6)

(7)

(8)

(9)

(10)

(11)

(2)

(3)

(4)

(5)

YES

Is there voltage to

N.O. of door

switch?

With door closed is

there voltage to

COM of door

switch?

Is there voltage to

N.O. of lint drawer

switch?

Is there voltage to

COM of lint drawer

switch with lint

panel closed?

Check for proper

operation replace if

necessary.

Correct wiring between N.O. on lint drawer and COM on

door switch.

Correct wiring

between N.O. and

output of secondary

fuse.

Check for proper

function of door

switch replace if

necessary.

Correct wiring

between H4-6 of

electronic

control and

COM of lint drawer

switch.

YES

NO

Single and stacked units. Gas and electric heat. Single and three

phase supply.

Reference voltage

checks to transformer

neutral.

T028D

21.Control Display – Door Open Light “On”

38

T028D

70291301

Electronic Control Trouble shooting

TMB1788S

1

2

3

4

5

7

6

8

9

10

11

22.Control Display – “door” Error on 25, 30, Stacked 30 and 35 Pound Tumble Dryers with 24 Volt EDC Controls

70291301

39

Electronic Control Troubleshooting

23.Control Display – No Visible Display – OPL Microprocessor Models

Gas, steam

and electric heat.

Single and three

phase supply.

Is there voltage

supplied to the unit?

YES

Note: Reference voltage to

Is there voltage to the

input side of the primary fuse(s)?

YES

Is there voltage to the

output side of the

primary fuse(s)?

YES

Is there voltage

across the primary side

of the transformer?

supply neutral.

NO

Connect supply

voltage and run unit.

Correct wiring between primary fuse and supply.

Replace primary

fuse.

Correct wiring

between transformer

and primary fuse.

Is there voltage across

fuse on OPL Micro?

YES

Replace fuse.

NO

Replace OPL Micro.

YES

Is there voltage across

1 & 4 of transformer

secondary?

YES

Is there voltage across

terminals H3-3 &

H3-4 on OPL Micro?

YES

NO

Replace transformer

Correct wiring

between OPL Micro

and transformer

secondary.

TMB1823S

40

70291301

24.Control Display – No Visible Display – Power On

Single and stacked

units. Gas and electric

heat. Single and three

phase supply.

Is there voltage across

H4-2 & H4-5 on the

EDC control?

Replace EDC

Control.

Is there voltage at

the input of the

secondary fuse?

Electronic Control Trouble shooting

NOYES

Correct wiring

between secondary

fuse and

transformer.

NO

Is there power supplied

to the unit?

YES

Is there voltage to input

of primary fuses?

YES

Is there voltage to

output side of the

primary fuses?

YES

Is there voltage across

terminals 1 & 2 of

transformer primary?

NO

Plug unit in and run

it.

Correct wiring between primary fuses and power

supply.

Replace primary

fuse(s).

Correct wiring between primary

fuse and

transformer.

YES

Is there voltage to

output side of

secondary fuse?

YES

Correct wiring

between H4-2 and

secondary fuse.

NO

Replace secondary

fuse.

YES

Is there voltage across

terminals 2 & 3 of

transformer secondary?

YES

70291301

NO

Replace

transformer.

T025D

41

Electronic Control Troubleshooting

Is there power supply voltage coming to the

tumbler?

Connect power

and run the cycle.

Is there

voltage at the primary side

of the transformer at

terminals 1 and 2?

NO

YES

NO

Change the primary

fuse to the

transformer.

Correct wiring

between power

supply and

transformer.

Still no voltage

YES

there voltage at the

secondary side of the

transformer at terminal

2 and 3?

Replace the transformer.

NO

YES

Is there voltage to the

output side of the

secondary fuse?

Change the

secondary fuse.

NO

Correct the wiring

between the

secondary fuse and

the transformer.

Is there voltage to the

N.O. terminal of the

door switch?

YES

NO

Correct the wiring between the door

switch and the

secondary fuse.

YES

With door closed Is

there voltage at COM

of the door switch?

NO

Check for proper

operation,

replace the door

switch if

necessary.

YES

Is there voltage to the

COM of the lint panel

switch?

NO

Correct wiring

between lint panel

switch and door

switch.

YES

With lint panel

closed is there votlage to

N.O. terminal of the

liint panel switch?

NO

Replace lint

panel switch.

YES

Refer to NO

MOTOR RUN

(run circuit.)

NOTE: White wires are

transformer "neutral"

For stacked units.

Correct wiring

between upper and

lower pocket.

Manual Timer, with and without time delay board. Single and

stacked units. Single and three phase power supply.

T050D

Is

25.Will Not Start – Electric – Manual Timer

42

T050D

70291301

26.Will Not Start – Electric – Rotary Coin Drop

Coin Drop with and without time delay boards.

Single and stacked units. Single and three phase

power supply.

Is there power supply voltage coming to the

unit?

Connect power to

the unit and run

cycle.

NO

YES

Is there voltage at

the primary side of the

transformer at terminals

1 & 2?

NO

YES

Is the primary

fuse good?

YES

Correct wiring

between transformer

and power supply.

Replace fuse and

run

machine.

NO

Is there voltage

at the secondary side of the

transformer at terminal

2 and 3?

Replace the transformer.

NO

YES

Is there voltage

to the output side of the

secondary fuse?

Is the

secondary

fuse good?

NO

Replace fuse and

run

machine.

NO

YES

Correct wiring

between secondary

of transformer and

fuse.

YES

Is there voltage to

N.C. terminal of

switch A on rotary

coin drop?

Note: Reference voltage

to transformer neutral.

(White wire)

Correct wiring

between rotary

coin drop and

secondary fuse.

NO

YES

Is there voltage on the

COM terminal of switch

A?

Note: The following

checks are made with

the vend price satisfied.

Replace switch A.

NO

YES

Is there voltage

across coinmeter timer

motor?

Correct wiring

between coinmeter timer motor and COM

on switch A.

NO

Does the

coinmeter timer motor

advance?

YES

NO

YES

Replace coinmeter

timer motor.

Correct wiring

between N.O. on

door switch and

COM on switch A.

Is there voltage at

N.O. terminal of the

door switch?

NO

With the door

closed is there

voltage across the

door switch?

Check door switch for proper operation, replace if necessary.

Is there voltage to

the N.O. terminal of

the lint panel

switch?

Correct wiring

between N.O. on the

lint panel switch and

COM of door switch.

With the lint

panel closed is there

voltage across the

lint panel switch?

Check lint panel switch for proper

operation and

replace if necessary.

YES

NO

YES

NO

Is the unit equipped

with time delay

boards?

YES

NO

Continued on next

page at step 1.

Continued on next

page at step 2.

Step 3 continuation.

T075D

Electronic Control Trouble shooting

T075D

70291301

43

Electronic Control Troubleshooting

Correct wiring

between 2A of start

switch and COM of

lint panel switch.

Is there voltage at

2A of the start

switch?

Is there voltage at

terminal 7 of the

motor relay?

NO

YES

NO

YES

Correct wiring

between 7 of

motor relay and COM

of lint panel switch.

Refer to NO

MOTOR RUN

(run circuit).

Is there voltage to

H1-2 on TMR1

board?

STEP 1

Correct wiring

between

H1-2 and

output of

secondary

fuse.

With vend price

satisfied is there

voltage across N.C. &

COM of switch A?

NO

YES

NO

Replace switch A.

Is there voltage across

the timer motor?

Is there voltage across

H1-6 & H1-8 of

TMR1?

Correct wiring

between timer

motor and COM on

switch A.

NO

YES

Correct wiring between H1-6 and COM on switch A.

Is there voltage across

H1-2 & H1-3 of

TMR1?

NO

YES

Is there voltage to N.O.

of door switch?

Replace TMR1.

YES

NO

Correct wiring between N.O. of door switch and

H1-3 of TMR1.

Continue at step 3

on previous page.

YES

NO

Does coinmeter timer

motor advance?

YES

NO

Replace timer

motor.

STEP 2

Note: Following tests

are conducted with vend price satisfied.

Does the unit have single phase or three phase power supply?

Single phase

3 phase

Is there voltage at

terminal 14 of the

motor control relay?

Correct wiring to

terminal 14 of

motor control

relay.

Refer to NO

MOTOR RUN (Run

Circuit).

YES

NO

T076D

26.Will Not Start – Electric – Rotary Coin Drop (continued)

44

T076D

70291301

27.Will Not Start – Gas – Manual Timer

Electronic Control Trouble shooting

No motor run (start circuit) Manual Tumblers. Single and stacked units

with and without time delay.

Is there power supply voltage coming to the

tumbler?

YES

Is there voltage

at the primary side of the

transformer at

terminals 1 and 2?

YES

Is there voltage

secondary side of the

at the transformer at terminal

2 and 3?

YES

Is there voltage to the

output side of the

secondary fuse?

NO

Connect power

and run the cycle.

Change the primary

fuse to the

transformer.

Replace the transformer.

Change the

secondary fuse.

Still no voltage

For stacked units.

Correct the wiring

NO

secondary fuse and

the transformer

Correct wiring

between power

supply and

transformer.

Correct wiring

between upper and

lower pocket.

between the

.

NOTE: White wires are

YES

Is there voltage to the

input side of the door

switch?

NO

Correct the wiring

between the door

switch and the

secondary fuse.

Is there voltage to the output side of the lint

panel switch?

NO

transformer "neutral"

YES

Is there voltage to the

output side of the door

switch?

Replace the door switch.

Replace lint

panel switch.

NO

YES

Refer to NO

MOTOR RUN

(run circuit).

Is there voltage to the

input side of the lint

panel switch?

NO

Correct wiring

between lint panel

switch and door

switch.

YES

T041D

70291301

45

Single &

stacked tumblers

with and without time delay.

Is there power supply

voltage coming to the

unit?

Connect power to

the unit and run

cycle.

NO

YES

Is there voltage

at the primary side of the

transformer at terminals

1 & 2?

NO

YES

Is the primary

fuse good?

YES

Correct wiring

between transformer

and power supply.

Replace fuse and

run

machine.

NO

Is there voltage at the secondary side of the

transformer at terminal

2 and 3?

Replace the transformer.

NO

YES

Is there voltage to the

output side of the

secondary fuse?

Is the

secondary

fuse good?

NO

Replace

fuse and

run

machine.

NO

YES

Correct wiring

between secondary

of transformer and

fuse.

YES

Is there voltage to

N.C. terminal of

switch A on rotary

coin drop?

Note: Reference voltage to

transformer neutral.

(White wire)

Correct wiring between rotary coin drop and secondary

fuse.

NO

YES

Is there voltage on the

COM terminal of switch

A?

Note: The following

checks are made with

the vend price satisfied.

Replace switch A.

NO

YES

Is there voltage across coinmeter timer motor?

Correct wiring

between coinmeter timer motor and COM

on switch A.

NO

Does the coinmeter

timer motor

advance?

YES

NO

YES

Replace coinmeter

timer motor.

Correct wiring

between N.O on

door switch and

COM on switch A.

Is there voltage at

N.O. terminal of the

door switch?

NO

With the door

closed is there

voltage across the

door switch?

Check door switch for proper operation, replace if necessary.

Is there voltage to

the N.O. terminal of

the lint panel

switch?

Correct wiring between N.O. on the lint panel switch and

COM of door switch.

With the lint

panel closed is there

voltage across the lint

panel switch?

Check lint panel

switch for proper

operation and

replace if necessary.

YES

NO

YES

NO

Is the unit equipped

with time delay

boards?

YES

NO

Continued on next

page at step 1.

Continued on next

page at step 2.

Step 3 continuation.

T086D

Electronic Control Troubleshooting

28.Will Not Start – Gas – Rotary Coin Drop

46

T086D

70291301

Electronic Control Trouble shooting

28.Will Not Start – Gas – Rotary Coin Drop (continued)

STEP 1

Is there voltage to

H1-2 on TMR1

board?

YES

Note: Following tests

With vend price

satisfied is there

voltage across N.C. &

COM of switch A?

NO

Is there voltage across

the timer motor?

YES

Does coinmeter timer

motor advance?

NO

are conducted with vend price satisfied.

YES

NO

Correct wiring

between H1-2 and output of

secondary

fuse.

Replace switch A.

Correct wiring

between timer motor

and COM on switch

A.

Replace timer

motor.

STEP 2

Is there voltage at

2A of the start

switch?

YES

Is there voltage at

terminal 7 of the

motor relay?

YES

NO

Refer to NO

MOTOR RUN

(run circuit).

Correct wiring

between 2A of start

switch and COM of

lint panel switch.

Correct wiring

between 7 of motor

relay and COM of

lint panel switch.

YES

Is there voltage across

H1-6 & H1-8 of

TMR1?

YES

Is there voltage across

H1-2 & H1-3 of

TMR1?

NO

Is there voltage to N.O.

of door switch?

YES

Continue at step 3

on previous page.

NO

YES

NO

Correct wiring between H1-6 and COM on switch A.

Replace TMR1.

Correct wiring between N.O. of door switch and

H1-3 of TMR1.

T087D

70291301

47

Electronic Control Troubleshooting

Single and stacked units with and without

time delay boards.

Is there power supply voltage coming to the

tumbler?

Connect power

and run the cycle.

Is there voltage

at the primary side of the

transformer at

terminals 1 and 2?

NO

YES

NO

Change the primary

fuse to the

transformer

Correct wiring

between power

supply and

transformer.

Still no voltage

YES

Is there voltage

at the secondary side of the

transformer at terminal

2 and 3?

Replace the transformer.

NO

YES

Is there voltage

to the output side of the

secondary fuse?

Change the

secondary fuse.

NO

Correct the wiring

between the

secondary fuse and

the transformer.

Is there voltage

to the N.O. terminal of the

door switch?

YES

NO

Correct the wiring

between the door

switch and the secondary fuse

YES

Is there voltage to the COM terminal of the

door switch?

NO

Replace the

door switch.

YES

Is there voltage to the

COM terminal of the

lint panel switch?

NO

Correct wiring

between lint panel

switch and door

switch.

YES

Is there voltage to the

N.O. terminal of the

lint panel switch?

NO

Replace lint

panel switch.

YES

Refer to NO

MOTOR RUN

(run circuit) .

NOTE: White wires are

transformer "neutral"

For stacked units.

Correct wiring

between upper and

lower pocket.

T016D

29.Will Not Start – Steam – Manual Timer

48

T016D

70291301

30.Will Not Start – Steam – Rotary Coin Drop

Single and

stacked tumblers

with and without time delay.

Electronic Control Trouble shooting

Is there power supply

to the unit?

YES

Is there voltage

at the primary side of the

transformer at terminals

1 & 2?

YES

Is there voltage

at the secondary side of the

transformer at terminal

2 and 3?

YES

Is there voltage to the

output side of the

secondary fuse?

YES

Note: Reference voltage to

transformer neutral.

Is there voltage to

N.C. terminal of

switch A on rotary

coin drop?

YES

NO

(White wire)

NO

Connect power to

the unit and run

cycle.

Is the primary

fuse good?

YES

Correct wiring

between transformer

and power supply.

Replace the transformer.

Is the secondary fuse good?

YES

Correct wiring

between secondary

of transformer and

fuse.

Correct wiring between rotary coin drop and secondary

fuse.

NO

Replace

fuse and

run

machine.

Replace

fuse and

run

machine.

Is there voltage across

coinmeter timer motor?

YES

Does the coinmeter

timer motor

advance?

YES

Is there voltage at

N.O. terminal of the

door switch?

YES

With the door

closed is there

voltage across the

door switch?

NO

Is there voltage to

the N.O. terminal of

the lint panel

switch?

YES

NO

YES

NO

Correct wiring

between

coinmeter timer

motor and COM

on switch A.

Replace coinmeter

timer motor.

Correct wiring between N.O on door switch and

COM on switch A.

Check door switch for proper operation, replace if necessary.

Correct wiring between N.O. on the lint panel switch and

COM of door switch.

70291301

Is the unit equipped

with time delay

boards?

NO

the vend price satisfied.

Is there voltage on the

COM terminal of switch

A?

YES

Note: The following

checks are made with

NO

Continued on next

page column 1.

Replace switch A.

With the lint

panel closed is there

voltage across the

lint panel switch?

NO

Continued on next

page column 2.

Step 3 continuation.

YES

Check lint panel switch for proper

operation and

replace if necessary.

T062D

49

Electronic Control Troubleshooting

30.Will Not Start – Steam – Rotary Coin Drop (continued)

COLUMN 1

Is there voltage to

H1-2 on TMR1

board?

YES

Note: Following tests

are conducted with

vend price satisfied.

With

vend price satisfied is

there voltage across N.C. &

COM of switch A?

NO

Is there voltage across

the timer motor?

YES

Does coinmeter timer

motor advance?

NO

YES

NO

Correct wiring

between H1-2 and output of

secondary

fuse.

Replace switch A.

Correct wiring

between timer motor

and COM on switch

A.

Replace timer

motor.

COLUMN 2

Is there voltage at

2A of the start

switch?

YES

Is there voltage at

terminal 7 of the

motor relay?

YES

NO

start switch and COM

NO

motor relay and COM

Refer to NO

MOTOR RUN

(run circuit).

Correct wiring

between 2A of

of lint panel switch.

Correct wiring

between 7 of

of lint panel switch.

YES

Is there voltage across

H1-6 & H1-8 of

TMR1?

YES

Is there voltage across

H1-2 & H1-3 of

TMR1?

NO

Is there voltage to N.O.

of door switch?

YES

Continue at step 3

on previous page.

NO

YES

NO

Correct wiring

between H1-6 and

COM on switch A.

Replace TMR1.

Correct wiring

between N.O. of

door switch and

H1-3 of TMR1.

T063D

50

70291301

31.Will Not Start/Continue Running – EDC Control

Single and stacked

Note: Test conducted with vend

price satisfied and start button

Is there voltage at

H4-4 on the EDC

control to transformer

neutral?

pressed.

YES

Continued on next

units. Gas, electric and steam heat. Single and

three phase supply.

page.

Is there voltage at the

input of the secondary

fuse?

Electronic Control Trouble shooting

NO

Correct wiring

between secondary

fuse and

transformer.

NO

Is there power supplied

to the unit?

YES

Is there voltage to input

of primary fuse(s)?

YES

Is there voltage to

output side of the

primary fuse(s)?

YES

NO

Plug unit in and run

it.

Correct wiring

between primary

fuse(s) and power

supply.

Replace primary

fuse.

YES

Is there voltage to

output side of

secondary fuse?

YES

Is there voltage to N.O.

of door switch?

YES

With door closed is

there voltage to COM

of door switch?

YES

Is there voltage to N.O.

of lint drawer switch?

NO

Replace secondary

fuse.

Correct wiring

between N.O. and

output of secondary

fuse.

Check for proper

function of door

switch replace if

necessary.

Correct wiring

between N.O. on lint

drawer and COM on

door switch.

70291301

Is there voltage

across terminals 1 & 2 of

transformer primary?

YES

Is there voltage

across terminals 2 & 3 of

transformer

secondary?

YES

NO

Correct wiring

between primary

fuse and

transformer.

Replace

transformer.

YES

Is there voltage to

COM of lint drawer

switch with lint panel

closed?

YES

Is there voltage at

H4-1 on the EDC

control board?

YES

Replace EDC

Control.

NO

Check for proper

operation replace if

necessary.

Correct wiring

between H4-1 and

COM of lint drawer

switch.

T029D

51

Electronic Control Troubleshooting

31.Will Not Start/Continue Running – EDC Control (continued)

Note: Tests conducted with vend

price satisfied and start button

pressed.

Is there voltage across

terminals 1 & 4 of

the fan motor?

NO

Correct wiring

between fan motor

and motor control

relay.

Three phase.

Refer to Note

on next page

Is there voltage on B

terminal of motor

control relay?

YES

Is the unit equipped with single phase or three phase power?

Single phase

Is there voltage to

terminal 5 of the

motor control relay?

YES

Is there voltage to

terminal 8 of motor

control relay?

YES

NO

Correct wiring

between B and

H4-4.

Correct wiring

between terminal 5

and power supply.

Replace motor

control relay.

YES

Does the fan motor

run?

YES

Is unit equipped with single phase or three phase power supply?

Three phase.

Refer to Note

on next page

Is there supply voltage

to L2 & L3 of motor

control relay?

YES

Is there voltage across terminals L2 & T2 and

L3 & T3?

NO

Single phase

NO

YES

Replace fan motor.

Correct wiring

between L2, L3 and

supply.

Replace motor

control relay.

52

Is there supply voltage

to L1 and L2 of the

motor control relay?

YES

Is there votlage across

L1 & T1 and L2 & T2?

NO

YES

Correct wiring

between L1, L2 and

power supply.

Replace motor

control relay.

NO

Is there voltage at

terminal 6 of motor

control relay?

YES

Is there voltage at

terminal 9 of motor

control relay?

YES

NO

Continued on next

Correct wiring

between terminal 6

of motor control relay and supply.

Replace motor

control relay.

page.

T030D

70291301

Electronic Control Trouble shooting

31.Will Not Start/Continue Running – EDC Control (continued)

Is there voltage across

terminals 1 & 4 of

cylinder motor?

YES

Does the cylinder

motor run?

YES

Motors are

operational.

Note: For high voltage three phase supply (380 volts

or higher), the cylinder and fan motors are supplied

by L1, L2, L3 through the motor relay terminals T1,

T2, T3. Make the appropriate adjustments when

doing voltage checks.

NO

Correct wiring

between cylinder

motor and motor

control relay.

Replace cylinder

motor.

T031D

70291301

53

Electronic Control Troubleshooting

Gas, steam and

electric heat.

Single and three phase

supply.

Is power supplied to

unit?

Is there voltage to

output of primary

fuse(s)?

Is there voltage

across terminals 1 & 2

on primary of

transformer?

Is there voltage

across terminals 2 & 3

of transformer

secondary?

Is there voltage to input

of secondary fuse?

Is there voltage to

output of secondary

fuse?

Is there voltage to

N.O. terminal of door

switch?

With door closed is

there voltage to COM

of door switch?

Is there voltage to

N.O. of lint panel

switch?

Is there voltage to

COM of lint panel

switch with lint panel

closed?

Is there voltage at terminal 8 of OPL

Micro?

Change primary

fuse.

Correct wiring

between transformer

and primary fuse.

Replace

transformer.

Correct wiring

between secondary

fuse and

transformer.

Replace secondary

fuse.

Correct wiring between N.O.

terminal of door

switch and

secondary fuse.

Check for proper

operation, replace

door switch if

necessary.

Correct wiring between N.O. of lint panel switch

and COM of door switch.

Check for proper

operation and

replace lint panel

switch if necessary.

Correct wiring

between terminal

8 of OPL Micro

and COM of lint

panel switch.

YES

NO

Continued on next

page.

Reference voltage to

supply neutral.

Note: Reference voltage to

transformer secondary neutral

terminal 3.

Connect supply

and run unit.

Is there voltage to input

of primary fuse(s)?

Correct wiring

between primary

fuse and supply.

T099D

32.Will Not Start/Continue Running – OPL Microprocessor Control

54

T099D

70291301

32.Will Not Start/Continue Running – OPL Microprocessor Control

Is there voltage at terminal 7 on OPL

Micro?

Is

there voltage

across terminals B & A of motor control relay for OM model and terminals

0 & 1 for RM

models?

voltage at terminal

Is there

5 on the motor control

relay for OM models and

terminal 2 for RM

models?

Is there

voltage across

terminals 5 & 8 of

the motor control relay for OM

models and terminals 2

& 4 for RM

models?

Is there voltage

across terminals

1 & 4 of fan

motor?

Does the fan

motor run?

Is there voltage to

terminal 6 of motor

control relay?

Is there voltage

across terminals 6 & 9 of

motor control relay?

Replace OPL Micro.

Correct wiring to

motor control relay.

Correct wiring

between motor

control relay and

power supply.

Replace motor

control relay.

Correct wiring

between fan motor

and motor control

relay.

Replace fan motor.

Correct wiring

between terminal

6 motor control

relay and supply

voltage.

Replace motor

control relay.

YES

NO

Tests conducted with cycle selected and

start key pad activated.

Reference voltage to

supply neutral.

Does the unit

have reversing

capabilities?

See cylinder

rotation. Either

forward or reverse.

YES

NO

Replace motor

control relay.

Correct wiring

between L1, L2 and

power supply.

Is unit supplied with

single phase or three

phase power?

Is there voltage to L1

and L2 of the motor

control relay?

Is there voltage to T1

and T2 of the motor

control relay?

Three phase. Gas and steam. Refer to Note on next page.

NO

YES

NO

YES

Single phase

Does the unit

have single phase or three phase supply?

Correct wiring

between L2, L3 and

power supply.

NO

YES

Is

there voltage

to T2 and T3 on

the motor control

relay?

Is

there voltage

to L2 and L3 on

the motor control

relay?

Replace motor

control relay.

NO

Continued on next

page.

NO

Single phase

TMB1824S

(continued)

Electronic Control Trouble shooting

70291301

TMB1824S

55

Electronic Control Troubleshooting

Is there voltage

across terminals 1 & 4 of

the cylinder motor?

Does the cylinder

motor run?

Correct the wiring

between the

cylinder motor and

control relay.

Replace cylinder

motor.

YES

NO

Unit operational.

NOTE: For three phase high voltage (380 volts or

higher), the cylinder and fan motors are supplied L1, L2,

L3 through the motor relay terminals T1, T2, T3. Make

the appropriate voltage checks while doing trouble

shooting.

T009D

32.Will Not Start/Continue Running – OPL Microprocessor Control (continued)

T009D

56

70291301

33.Will Not Run – Electric – Manual Timer

Is there voltage at terminal C on the

drying timer?

NO

Correct wiring

between drying

timer and lint panel

switch.

YES

Is there voltage at

terminal B on the

drying timer?

NO

YES

Is there voltage across

terminals 7 and 8 of

CR1 relay?

Replace drying

timer.

NOTE: make sure drying

timer is in the "on"

position.

NO

YES

Correct the wiring

between CR1 relay

and terminal B on

drying timer.

Is there voltage across

terminal 3 and 5 of

CR1 relay?

Is there voltage

across terminals 2A

& 1A of push to

start switch?

Replace CR1 relay.

YES

NO

YES

NO

Replace push to

start switch.

Is there voltage across

COM and N.O. of the airflow switch?

NOTE: This test to be

made with push to start

switch pressed in.

YES

Adjust the airflow

switch or replace if

inoperative.

NOTE: The N.O. contact is closed in the rest

position due to the physical

mounting of the switch.

NO

Is the unit equipped

with a time delay

board?

NO

Is there voltage across

H1-6 & H1-8 on

TMR1?

YES

Correct wiring to

TMR1.

NO

YES

Is there voltage across

DOB contacts on

TMR2?

Replace time

delay board.

YES

NO

Is there voltage across

terminals H1-4 &

H1-8 on TMR2?

YES

NO

CONTINUED

ON NEXT

PAGE.

Is there voltage across

terminals 5 & 3 on

the CR2 relay?

Replace CR2

relay.

YES

Is there voltage across

terminals 7 & 8 of

CR2 relay?

NO

Correct wiring

between CR2

relay and

airflow switch.

NO

YES

Is there voltage across

coils B & A of the

motor control relay?

Correct wiring

between motor

control relay

and airflow

switch.

NO

**

Check for proper

operation of

airflow switch.

**

Tested with the start switch pressed in.

YES

With and without time delay boards.

Single and stacked units.

Single and three phase power supply.

T051D

Electronic Control Trouble shooting

70291301

T051D

57

Electronic Control Troubleshooting

33.Will Not Run – Electric – Manual Timer (continued)

Is this a single phase

or three phase unit?

Single phase

**

Is there voltage

across terminal 7 & 4 of

the motor control

relay?

NO

Is there

voltage at terminal 5

on the motor control relay

across terminals 5 & 3

to supply

neutral?

YES

Is

there voltage

of the motor control

relay?

Three phase

YES

NO

YES

Replace motor control relay.

Correct wiring between terminal 5 and supply voltage.

Replace motor

control relay.

Is there

voltage across terminals 14 & 13 of motor control relay?

NO

Is there voltage to L1 of motor control relay?

YES

Is there voltage to L2 of motor control relay?

YES

Is there

voltage across

L1 to T1 and L2 to

T2 on the motor

control relay?

YES

NO

YES

Replace motor

control relay.

Correct wiring

between L1 and

power supply.

Correct wiring

between L2 and

power supply.

Replace motor

control relay.

NO

Is

there voltage

across terminals 1 & 4

of fan motor?

YES

Does the fan motor

run?

YES

**

Tested with the start switch pressed in.

NO

Correct wiring

between fan

motor and contact

8 on the motor

control relay.

Replace the fan

motor.

NO

Is there

voltage across terminals

3 & 5 of the fan motor

centrifugal switch with

the fan motor

running?

NO

Continued on next

page.

Note: Only for non time

delay machines

YES

Replace fan

motor.

TMB1825S

58

70291301

Electronic Control Trouble shooting

Is there voltage at terminals 1 & 4 of

the cylinder motor?

Correct wiring

between cylinder

motor and contact

9 on the motor

control relay.

NO

Does the cylinder

motor run?

Replace the

cylinder motor.

NO

The cylinder and

fan motors are

operational.

YES

Is there voltage to terminal 6 on the

motor control relay?

voltage across

terminal 6 & 9 of the

motor control relay?

Correct wiring

between terminal

6 and power

supply.

Replace motor

control relay.

NO

YES

NO

Is unit single phase or

three phase?

Single phase.

Three phase.

Is there voltage to L2

on motor control relay?

Correct wiring

between motor

control relay and

supply.

Is there voltage to L3

on motor control relay?

Correct wiring

between motor

control relay and

supply.

voltage across

L2 to T2 and L3 to

T3 on the motor

control relay?

Replace motor

control relay.

NO

YES

NO

YES

NO

T053D

Is there

33.Will Not Run – Electric – Manual Timer (continued)

T053D

70291301

59

Electronic Control Troubleshooting

34.Will Not Run – Electric – Rotary Coin Drop

Single and Stack with and without

time delay. Single and three phase power.

Tested with vend price

**

satisfied and with start

**

Is there voltage across

terminals 2A & 1A

of push to start

switch?

NO

Is there voltage to

COM of the airflow

switch?

YES

**

Is there voltage across

COM and N.O. of

the airflow switch?

NO

switch pressed in.

YES

Note: Reference

voltage to transformer

neutral.

NOTE: The N.O. contact is closed in the rest

position due to the physical mounting

YES

NO

of the switch.

Replace push to

start switch.

Correct wiring

between COM of airflow switch and 1A on start switch.

Replace inoperative

switch or correct

airflow vane

operation.

**

Is there voltage across

terminals 7 & 8 of

CR2 relay?

YES

**

Is there voltage across

terminals 5 & 3 on

the CR2 relay?

NO

**

Is there voltage across

the coil of the motor

control relay?

YES

Is unit single

phase or three

phase?

Single phase

NO

YES

NO

Three phase

Refer to note.

Correct wiring

between CR2

relay and

airflow switch.

Replace CR2

relay.

Correct wiring

between motor

control relay

and airflow

switch.

Continued on

Is the unit equipped

with a time delay

board?

YES

**

Is there voltage across

terminals H1-4 &

H1-8 on TMR2?

YES

**

Is there voltage across

DOB contacts on

TMR2?

NO

YES

Check for proper

operation of

airflow switch and

check wiring.

Replace time

delay board.

Tested with the start switch pressed in.

**

Is there voltage across

terminal 7 & 4 of the

motor control relay?

NO

Is there voltage at

terminal 5 on the

motor control relay?

YES

Continued on next

page COLUMN 1.

YES

NO

Replace motor

control relay.

Correct wiring

between

terminal 5

and supply

voltage.

T072D

60

70291301

Electronic Control Trouble shooting

Replace fan

motor.

YES

Is there voltage across

terminals 1 & 4 of

fan motor?

NO

Correct wiring

between fan

motor and contact

8 on the motor

control relay.

Does the fan motor

run?

Replace the fan

motor.

NO

YES

Replace motor

control relay.

Is there voltage across

terminal 5 & 8 of the

motor control relay?

YES

NO

YES

Is there voltage to

terminal 6 on the

motor control relay?

Correct wiring

between terminal

6 and power

supply.

NO

YES

For units without time

delay boards.

COLUMN 1

Replace motor

control relay.

Is there voltage across

terminal 14 & 13 of motor control relay?

COLUMN 2

Correct wiring

between L1, L2

and supply.

Is there voltage to L1 &

L2 terminals on motor

control relay?

Replace motor

control relay.

Is there voltage to T1 &

T2 terminals on motor

control relay?

YES

NO

YES

NOYES

Continued on next

page COLUMN 1.

Is the machine

supplied with single

phase or three phase

power?

Single phase

Three phase Refer to Note.

Is there voltage to L2 & L3 terminals

on motor control

relay?

Correct wiring

between supply

and L2 & L3

terminals.

NO

YES

Is there voltage

across L2 to T2 and

L3 to T3?

YES

NO

Replace motor

control relay.

Replace cylinder

motor.

Does the cylinder

motor run?

NO

YES

CYLINDER AND

FAN MOTORS ARE

OPERATIONAL.

NOTE: For Hi voltage three phase supply (380volts or higher), the cylinder and fan motor are supplied L1, L2, L3 through the motor relay

terminals T1, T2, T3. Make the appropriate

adjustments when doing trouble shooting.

T073D

Is there

voltage across

terminals 3 & 5 of

the fan motor

centrifugal switch with

the fan motor

running?

34.Will Not Run – Electric – Rotary Coin Drop (continued)

70291301

T073D

61

Electronic Control Troubleshooting

Is there voltage at terminals 1 & 4 of

the cylinder motor?

Correct wiring between cylinder motor and contact

9 on the motor

control relay.

NO

Does the cylinder

motor run?

Replace the

cylinder motor.

NO

The cylinder and

fan motors are

operational.

YES

COLUMN 1

voltage across

terminals 6 & 9 of

motor control relay?

NO

YES

Replace motor

control relay.

T074D

Is there

34.Will Not Run – Electric – Rotary Coin Drop (continued)

T074D

62

70291301

35.Will Not Run – Gas – Manual Timer

No motor run (run circuit).

Single

and stacked units with and without

time delay boards.

Is there voltage at

terminal c on the

drying timer?

NO

Correct wiring

between drying

timer and lint panel

switch.

YES

Is there voltage at

terminal b on the

drying timer?

NO

YES

Is there voltage across

terminals 7 and 8 of

CR1 relay?

Replace drying

timer.

NOTE: make sure drying

timer is in the “on”

position.

NO

YES

Correct the wiring

between CR1 relay

and terminal b on

drying timer.

Is there voltage across

terminal 3 and 5 of

CR1 relay?

Is there voltage

across terminals 2A

& 1A of push to

start switch?

Replace CR1 relay.

YES

NO

YES

NO

Replace push to

start switch.

Is there voltage across

COM and N.O. of

the airflow switch?

NOTE: This test to be

made with push to start

switch pressed in.

YES

Adjust the airflow

switch or replace if

inoperative.

NOTE: The N.O. contact is closed in the rest

position due to the physical mounting

of the switch.

NO

Is the unit equipped

with a time delay

board?

NO

Is there voltage across

H1-6 & H1-8 on

TMR1?

YES

Correct wiring to

TMR1.

NO

YES

Is there voltage across

DOB contacts on

TMR2?

Replace time

delay board.

YES

NO

Is there voltage across

terminals H1-4 &

H1-8 on TMR2?

YES

NO

CONTINUED

ON NEXT

PAGE.

Is there voltage across

terminals 5 & 3 on

the CR2 relay?

Replace CR2

relay.

YES

Is there voltage across

terminals 7 & 8 of

CR2 relay?

NO

Correct wiring

between CR2

relay and

airflow switch.

NO

YES

Is there voltage across

coils B & A of the

motor control relay?

Correct wiring

between motor

control relay

and airflow

switch.

NO

**

Check for proper

operation of

airflow switch.

**

Tested with the start switch pressed in.

YES

T042D

Electronic Control Trouble shooting

70291301

T042D

63

Electronic Control Troubleshooting

Is there voltage at

terminals 1 & 4 of

the cylinder motor?

Correct wiring

between cylinder

motor and contact

9 on the motor

control relay.

NO

Does the cylinder

motor run?

Replace the

cylinder motor.

NO

The cylinder and

fan motors are

operational.

YES

voltage across

terminals 3 & 5 of

the fan motor

centrifugal switch with

the fan motor

Replace fan

motor.

YES

Is there voltage across

terminal 7 & 4 of the motor control relay?

Replace motor

control relay.

YES

NO

**

Is there voltage across

terminals 1 & 4 of

fan motor?

NO

Correct wiring

between fan

motor and contact

8 on the motor

control relay.

Does the fan motor

run?

Replace the fan

motor.

NO

YES

**

Tested with the start switch pressed in.

Is there voltage at terminal 5 on the

motor control relay to

to supply neutral?

Correct wiring

between terminal 5

and supply voltage.

NO

YES

Replace motor

control relay.

Is there voltage across

terminal 5 & 8 of the

motor control relay?

YES

NO

YES

Is there voltage to

terminal 6 on the

motor control relay and

supply neutral?

Is there voltage across

terminal 6 & 9 of the motor control relay?

Correct wiring

between terminal

6 and power

supply.

Replace motor

control relay.

NO

YES

NO

Note: Only for non time

delay machines

T043D

Is there

running?

35.Will Not Run – Gas – Manual Timer (continued)

64

T043D

70291301

36.Will Not Run – Gas – Rotary Coin Drop

Single and stack with and

without time delay.

Electronic Control Trouble shooting

**

Is there voltage across

terminals 2A & 1A

of push to start

switch?

NO

voltage to transformer

Is there voltage to

COM of the airflow

switch?

YES

NOTE: The N.O. contact is closed in

the rest position due to the physical

**

Is there voltage across

COM and N.O. of

the airflow switch?

NO

Is the unit equipped

with a time delay

board?

YES

Tested with start switch

pressed in.

YES

Note: Reference

neutral.

NO

mounting of the switch.

YES

NO

Replace push to

between COM of

airflow switch and

1A on start switch.

Adjust the airflow

switch or replace if

start switch.

Correct wiring

inoperative.

**

Is there voltage across

DOB contacts (H1-4 and H1-5) on TMR2?

NO

**

Is there voltage across

terminals 7 & 8 of

CR2 relay?

YES

**

Is there voltage across

terminals 5 & 3 on

the CR2 relay?

NO

**

Is there voltage across

coils B & A of the

motor control relay?

YES

**

Is there voltage across

terminal 7 & 4 of the

motor control relay?

YES

NO

YES

NO

YES

Replace time

delay board.

Correct wiring

between CR2

relay and

airflow switch.

Replace CR2

relay.

Correct wiring

between motor

control relay

and airflow

switch.

Replace motor

control relay.

70291301

Is there voltage across

H1-6 & H1-8 on

TMR1?

YES

**

Is there voltage across

terminals H1-4 &

H1-8 on TMR2?

YES

NO

Correct wiring to

TMR1.

Is there voltage at terminal 5 on the

motor control relay?

YES

NO

Check for proper

operation of

airflow switch

and check wiring.

CONTINUED

ON NEXT

PAGE.

**

Tested with the start switch pressed in.

NO

Correct wiring

between

terminal 5

and supply

voltage.

T088D

65

Electronic Control Troubleshooting

36.Will Not Run – Gas – Rotary Coin Drop (continued)

Is there voltage across

terminal 5 & 8 of the

motor control relay?

NO

Is there voltage across

terminals 1 & 4 of

fan motor?

YES

Does the fan motor

run?

YES

Is there voltage

across terminals 3 &

5 of the fan motor centrifugal

switch with the fan

motor running?

YES

NO

YES

Replace motor

control relay.

Correct wiring

between fan

motor and contact

8 on the motor

control relay.

Replace the fan

motor.

Replace fan

motor.

Is there voltage at

terminals 1 & 4 of

the cylinder motor?

YES

Does the cylinder

motor run?

YES

The cylinder and

fan motors are

operational.

NO

Correct wiring

between cylinder

motor and contact

9 on the motor

control relay.

Replace the

cylinder motor.

NO

Is there voltage to

terminal 6 on the

motor control relay?

YES

Is there voltage across

terminal 6 & 9 of the motor control relay?

NO

YES

Correct wiring

between terminal

6 and power

supply.

Replace motor

control relay.

**

Tested with the start switch pressed in.

T089D

66

70291301

37.Will Not Run – Steam – Manual Timer

Single and stacked units with and without

time delay board.

Is there voltage at terminal C on the

drying timer?

NO

Correct wiring

between drying

timer and lint panel

switch.

YES

Is there voltage at terminal B on the

drying timer?

NO

YES

Is there voltage across

terminals 7 and 8 of

CR1 relay?

Replace drying

timer.

NOTE: Make sure drying

timer is in the "on"

position.

NO

YES

Correct the wiring

between CR1 relay

and terminal B on

drying timer.

Is there voltage across

terminal 3 and 5 of

CR1 relay?

Is there voltage

across terminals 2A

& 1A of push to

start switch?

Replace CR1 relay.

YES

NO

YES

NO

Replace push to

start switch.

Is there voltage across

COM and N.O. of

the airflow switch?

NOTE: This test to be

made with push to start

switch pressed in.

YES

Adjust the airflow

switch or replace if

inoperative.

NOTE: The N.O. contact is closed in

the rest position due to the physical

mounting of the switch.

NO

Is the unit equipped

with a time delay

board?

NO

Is there voltage across

H1-6 & H1-8 on

TMR1?

YES

Correct wiring to

TMR1.

NO

YES

Is there voltage across

DOB contacts on

TMR2?

Replace time

delay board.

YES

NO

Is there voltage across

terminals H1-4 &

H1-8 on TMR2?

YES

NO

Is there voltage across

terminals 5 & 3 on

the CR2 relay?

Replace CR2

relay..

YES

Is there voltage across

terminals 7 & 8 of

CR2 relay?

NO

Correct wiring

between CR2

relay and

airflow switch.

NO

YES

Is there voltage across

B & A of the motor

control relay?

Correct wiring

between motor

control relay

and airflow

switch.

NO

**

Check for proper

operation of

airflow switch.

**

Tested with the start switch pressed in.

YES

T017D

CONTINUED

ON NEXT

PAGE.

Electronic Control Trouble shooting

70291301

T017D

67

Electronic Control Troubleshooting

Is there voltage at

terminals 1 & 4 of

the cylinder motor?

Correct wiring

between cylinder

motor and contact

9 on the motor

control relay.

NO

Does the cylinder

motor run?

Replace the

cylinder motor.

NO

The cylinder and

fan motors are

operational.

YES

voltage across

terminals 3 & 5 of

the fan motor

centrifugal switch with

the fan motor

Replace fan

motor.

YES

Is there voltage across

terminal 7 & 4 of the

motor control relay?

Replace motor

control relay.

YES

NO

**

Is there voltage across

terminals 1 & 4 of

fan motor?

NO

Correct wiring

between fan

motor and contact

8 on the motor

control relay.

Does the fan motor

run?

Replace the fan

motor.

NO

YES

**

Tested with the start switch pressed in.

Is there voltage at

terminal 5 on the

motor control relay to

to supply neutral?

Correct wiring

between terminal

5 and supply

voltage.

NO

YES

Replace motor

control relay.

Is there voltage across

terminal 5 & 8 of the

motor control relay?

YES

NO

YES

Is there voltage to

terminal 6 on the

motor control relay and

supply neutral?

Is there voltage across

terminal 6 & 9 of the

motor control relay?

Correct wiring

between terminal

6 and power

supply.

Replace motor

control relay.

NO

YES

NO

Note: Only for non time

delay machines

T018D

Is there

running?

37.Will Not Run – Steam – Manual Timer (continued)

68

T018D

70291301

38.Will Not Run – Steam – Rotary Coin Drop

Single and stack

with and without time delay.

**

Tested with start switch

pressed in and vend

**

Is there voltage across

terminals 2A & 1A

of push to start

switch?

NO

Is there voltage to

COM of the airflow

switch?

satisfied.

YES

Note: Reference

voltage to transformer

neutral.

NO

Replace push to

start switch.

Correct wiring

between COM of airflow switch and 1A on start switch.

Electronic Control Trouble shooting

**

Is there voltage across

DOB contacts on

TMR2?

NO

**

Is there voltage across

terminals 7 & 8 of

CR2 relay?

YES

NO

Replace time

delay board.

Correct wiring

between CR2

relay and

airflow switch.

YES

NOTE: The N.O. contact is closed in the rest

position due to the physical mounting

**

Is there voltage across

COM and N.O. of

the airflow switch?

NO

Is the unit equipped

with a time delay

board?

YES

Is there voltage across

H1-6 & H1-8 on

TMR1?

YES

of the switch.

YES

NO

Adjust the airflow

switch or replace if

inoperative.

Correct wiring to

TMR1.

**

Is there voltage across

terminals 5 & 3 on

the CR2 relay?

NO

**

Is there voltage across

B & A of the motor

control relay?

YES

**

Is there voltage across

terminal 7 & 4 of the motor control relay?

NO

Is there voltage at

terminal 5 on the

motor control relay?

YES

NO

YES

NO

Replace CR2

relay.

Correct wiring

between motor

control relay

and airflow

switch.

Replace motor

control relay.

Correct wiring

between

terminal 5

and supply

voltage.

**

70291301

Is there voltage across

terminals H1-4 &

H1-8 on TMR2?

YES

NO

Check for proper

operation of

airflow switch and

check wiring.

**

Tested with the start switch pressed in.

YES

CONTINUED

ON NEXT

PAGE.

T064D

69

Electronic Control Troubleshooting

Is there voltage at

terminals 1 & 4 of

the cylinder motor?

Correct wiring

between cylinder

motor and contact

9 on the motor

control relay.

NO

Does the cylinder

motor run?

Replace the

cylinder motor.

NO

The cylinder and

fan motors are

operational.

YES

voltage across

terminals 3 & 5 of

the fan motor

centrifugal switch with

the fan motor

Replace fan

motor.

YES

Is there voltage across

terminals 1 & 4 of

fan motor?

NO

Correct wiring

between fan

motor and contact

8 on the motor

control relay.

Does the fan motor

run?

Replace the fan

motor.

NO

YES

**

Tested with the start switch pressed in.

Replace motor

control relay.

Is there voltage across

terminal 5 & 8 of the

motor control relay?

YES

NO

YES

Is there voltage to terminal 6 on the

motor control relay?

Is there voltage across

terminal 6 & 9 of the

motor control relay?

Correct wiring

between terminal

6 and power

supply.

Replace motor

control relay.

NO

YES

NO

Only for units without

time delay boards.

T065D

Is there

running?

38.Will Not Run – Steam – Rotary Coin Drop (continued)

70

T065D

70291301

39.Will Not Heat – Electric – Manual Timer

With and without time delay board.

Single and stacked units. Single and

NOTE: The following tests are conducted with

the heat timer in the "ON" position with the

machine running and calling for heat. Voltage

checks are referenced to transformer neutral.

Is there voltage across

terminals 1 & 6 of

the temp control bd?

NO

three phase power supply.

Electronic Control Trouble shooting

Is there

voltage at

airflow switch

N.C. terminal to

transformer

neutral?

Replace inoperative

NO

switch or correct

airflow vane operation.

YES

Is there voltage across

terminals 5 & 6 of

the temp control bd?

NO

Is the thermistor

shorted or open?

NO

Is temperature

selection switch

shorted or open?

NO

Replace the

temperature

control board.

YES

Is there

voltage to

terminal 3 of

fan motor?

Replace thermistor.

Replace selection

switch.

NO

between fan motor

YES

Correct wiring

terminal 3 and

CR1 terminal 4.

YES

Is there voltage at terminal 6 on CR1 to transformer neutral?

YES

Is there voltage from terminal 4 on CR1 to transformer neutral?

YES

Is unit equipped with

time delay board?

NO

Is there voltage from terminal 6 on CR2 to transformer neutral?

YES

Correct wiring between

NO

airflow switch and

terminal 6 on CR1.

NO

Replace CR1.

Correct wiring

NO

between terminal 6

on CR2 to terminal

4 on CR1.

CONTINUED

ON NEXT

PAGE

70291301

Is there voltage

at terminal 3 & 5

of fan motor?

Correct wiring between motor terminal 5 and

temp control

board terminal 1.

YES

NO

Replace fan motor.

Is there voltage from terminal 4 on CR2 to transformer neutral?

YES

Correct wiring between CR2

terminal 4 & terminal 1 on temp control

board.

NO

Replace CR2.

T054D

71

Electronic Control Troubleshooting

Is there voltage to the

input side of the

cabinet limit?

Correct wiring

between cabinet

limit and temp

control board.

YES

NO

Is there voltage to the

output side of the

cabinet limit?

YES

NO

Replace the cabinet

limit.

Is there voltage to the

input side of the stove

limit?

NO

YES

Correct wiring

between stove limit

and cabinet limit.

Is there voltage to the

output side of the stove

limit?

NO

YES

Replace the stove

limit.

Is there voltage across

HC1 & HC2

element contactor

coils?

YES

NO

Correct wiring

between element

contactor coils and

stove limit.

Is there voltage across

the elements?

YES

UNIT

OPERATIONAL

NO

Check wiring

between elements,

contactors and

supply. Correct if

necessary.

Note: Voltage checks are referenced to

transformer neutral.

Do the elements

produce heat?

NO

YES

Replace elements.

T055D

39.Will Not Heat – Electric – Manual Timer (continued)

72

T055D

70291301

40.Will Not Heat – Electric

Single and stacked units with single and three

phase supply.

Note: Tests are conducted with unit running

and calling for heat.

All voltage checks are referenced to

transformer neutral.

Correct wiring

between FS-2 and

COM of lint drawer.

Is there voltage on

FS-2 of EDC control?

Is there voltage

on FS-1 of

EDC control?

Correct wiring

between COM of

airflow switch and

FS-1 of EDC

control.

Is there voltage on

COM of airflow

switch?

Check for proper

function of airflow

switch and replace

if necessary.

Is there voltage at

N.C. terminal of

airflow switch?

Correct wiring

between terminal 7

on motor control

relay and N.C.

terminal on airflow

switch.

Is there voltage on

terminal 7 of motor

control relay?

Replace motor

control relay.

Is there voltage at

terminal 4 of motor

control relay?

Correct wiring

between terminal

3 of fan motor centrifugal switch and terminal 4 of

motor control relay.

Is there voltage on

terminal 3 of fan motor centrifugal

switch?

Replace fan motor.

Is there voltage at

terminal 5 of fan motor centrifugal

switch?

Correct wiring

between cabinet

limit and terminal

5 of fan motor

centrifugal switch.

Is there voltage to the

input side of the

cabinet limit?

Replace cabinet

limit.

Is there voltage at the

output of the cabinet

limit?

Correct wiring

between stove limit

and cabinet limit.

Is there voltage to the input side of the stove

limit?

NO

YES

Is the

thermistor

operational?

Replace EDC

control.

Replace

thermistor.

YES

NONO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

Continued on next

page.

T034D

Electronic Control Trouble shooting

70291301

T034D

73

Electronic Control Troubleshooting

40.Will Not Heat – Electric (continued)

Is there voltage to the

output side of the stove

limit?

YES

Is there voltage across

coils HC1 & HC2?

YES

Is there voltage across

the heating elements?

YES

Do the elements

produce heat?

NO

Replace the stove

limit.

Correct wiring to the coils of HC1

and HC2.

Correct wiring

between elements

and supply. Replace

HC1 and or HC2

if necessary

Replace elements.

YES

Unit operational.

T035D

74

70291301

Electronic Control Trouble shooting

41.Will Not Heat – Electric – Rotary Coin Drop (With and Without Time Delay Board)

Single and stacked tumblers with and without time delay.

Single and three phase

units.

Is there voltage across across terminals 1 &

6 of the temp

control board?

NO

Is there voltage at

airflow switch N.C.

terminal to transformer

neutral?

Adjust the airflow

NO

switch or replace if

inoperative.

YES

Is

there voltage across across terminals 5 &

6 of the temp

control board?

NO

Is the thermistor shorted or open?

NO

Is temperature

selection switch

shorted or open?

NO

Replace the

temperature

control board.

Is there voltage

on terminal 3 of fan

motor to transformer

neutral?

YES

Replace thermistor.

YES

NO

Replace selection

switch.

Correct wiring

between terminal

3 of fan motor

and N.C. terminal

on switch B.

YES

Is there voltage at

COM on switch B to

transformer neutral?

YES

Is there voltage from

N.C. on switch B to

transformer neutral?

YES

Is the unit equipped

with a time delay

board?

NO

Is there voltage from terminal 6 on CR2 to transformer neutral?

YES

Correct wiring

NO

between airflow

switch and COM on

NO

Replace switch B.

NO

between terminal 6 on CR2 to terminal

N.C. on switch B.

switch B.

Correct wiring

With fan motor

running is there voltage

from terminal 5 to

transformer neutral?

YES

Is there voltage on terminal 1 of temp

board to transformer

neutral?

YES

CONTINUED

ON NEXT

PAGE

70291301

Power supply to

temp control board

is good.

NO

Replace fan motor.

Correct wiring

between terminal

NO

1 of temp board

to terminal 5

of fan motor.

Is there voltage from terminal 4 on CR2 to transformer neutral?

YES

Correct wiring

between terminal

4 on CR2 & terminal 1 on temp control

board.

NO

Replace CR2.

T077D

75

Electronic Control Troubleshooting

Is there voltage to the

input side of the

cabinet limit?

Correct wiring

between cabinet

limit and temp

control board.

NO

Is there voltage to the

output side of the

cabinet limit?

YES

NO

Replace the

cabinet limit.

Is there voltage to the

input side of the stove

limit?

NO

YES

Correct wiring

between stove limit

and cabinet limit.

Is there voltage to the

output side of the stove

limit?

NO

YES

Replace the stove

limit.

Is there voltage across

the coils of HC1 &

HC2?

YES

NO

Correct the wiring

to the coils.

Is there voltage across

the elements?

YES

UNIT

OPERATIONAL

NO

Check the wiring

between elements,

contactors and

supply. Correct if

necessary.

Note: Voltage checks are referenced to

transformer neutral.

Do the elements

produce heat?

NO

YES

Replace elements.

YES

T078D

41.Will Not Heat – Electric – Rotary Coin Drop (With and Without Time Delay Board) (continued)

76

T078D

70291301

Electronic Control Trouble shooting

Is power supplied to

unit?

Is there voltage to

output of primary

fuse(s)?

there voltage across

terminals 1 & 2 on

primary of

transformer?

Is there voltage across

terminals 2 & 3 of

transformer

secondary?

Is there voltage to input

of secondary fuse?

Is there voltage to

output of secondary

fuse?

Is there voltage to

N.O. terminal of door

switch?

With door closed is

there voltage to COM

of door switch?

Is there voltage to

N.O. of lint panel

switch?

Change primary

fuse.

Correct wiring

between transformer

and primary fuse.

Replace

transformer.

Correct wiring

between secondary

fuse and

transformer.

Replace secondary

fuse.

Correct wiring

between N.O.

terminal of door

switch and

secondary fuse.

Check for proper

operation, replace

door switch if

necessary.

Correct wiring

between N.O. of

lint panel switch

and COM of door

switch.

YES

NO

Continued on next

page Column 1.

Note: Reference voltage to

transformer secondary neutral

terminal 3.

Connect supply and

run unit.

Is there voltage to input

of primary fuse(s)?

Correct wiring between primary fuse and supply.

Is the thermister

operating properly?

Is there voltage at

terminal 5 on OPL

Micro?

Continued on next

page column 2.

Replace thermister.

Single and three phase supply.

YES

NO

YES

Reference voltage to

transformer neutral

terminal 3.

Test conducted with unit

running and calling for heat.

Reference voltage to

supply neutral.

Note: Testing conducted with unit running

and calling for heat.

T010D

Is

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

70291301

T010D

77

Electronic Control Troubleshooting

Is there voltage to COM of lint panel

switch with lint panel

closed?

Is there voltage at

terminal 8 of OPL

Micro?

Check for proper

operation and

replace lint panel

switch if necessary.

Correct wiring

between terminal

8 of OPL Micro

and COM of lint

panel switch.

YES

NO

Replace OPL Micro.

Correct wiring

between terminal

6 & 13 on OPL

Micro.

Is there voltage to

terminal 13 of OPL

Micro?

Is there voltage at

terminal 6 of OPL

Micro?

Replace OPL Micro.

NO

YES

Column 1

Correct wiring

between COM &

OPL Micro.

Is there voltage at

COM of airflow

switch?

Check for proper

operation and

replace if

necessary.

Is there voltage at

N.C. terminal of

airflow switch?

Correct wiring

between terminal

7/8 of motor

control relay and

N.C. of airflow

switch.

Replace motor

control relay.

there voltage at

terminal 4 of motor

control relay for OM

models or terminal 6

for RM

Correct wiring

between fan motor

centrifugal switch and motor control

relay.

Is there voltage at

terminal 3 of fan motor centrifugal

switch?

Replace fan motor.

Is there voltage at

terminal 5 of fan motor centrifugal

switch?

Column 2

Continued on next

page.

NO

YES

The following tests are

conducted with the unit running

and calling for heat.

Is the unit supplied with

single phase or three

phase power?

single phase

Is there voltage to

terminal 14 on motor

control relay?

Is there voltage across

terminals 14 & 13 of motor control relay?

Correct wiring

between terminal

14 on motor

control relay and

N.C. terminal of

airflow switch.

Replace motor

control relay.

Three phase

NO

YES

NO

YES

T011D

Is

models?

there voltage at

terminal 7 of motor

control relay for OM

models or terminal 8

for RM

Is

models?

42.Will Not Heat – Electric/Gas – OPL Microprocessor (continued)

78

T011D

70291301

42.Will Not Heat – Electric/Gas – OPL Microprocessor (continued)

Correct wiring between cabinet

limit and terminal

5 of fan motor

centrifugal switch.

Is there voltage to the

input of the cabinet

limit?

Replace cabinet

limit.

Is there voltage to

output of cabinet limit?

Correct wiring

between stove limit

and cabinet limit.

Is there voltage to input

of stove limit?

Replace stove limit.

Is there voltage to the

output side of the stove

limit?

Correct wiring

between ICM board

and stove limit.

Is there voltage to

terminal 2 of ICM

board?

Replace ICM board.

Is there voltage to

terminal 1 of ICM

board?

Correct wiring to

gas valve coils.

Is there voltage across

the coils of the gas

valve?

Replace the coils or complete gas valve.

Is there gas flow

through the valve?

Unit is operational.Is there a flame?

Continued from column 2 of

previous page.

NO

YES

NO

YES

NO

YES

NO

YES

Check gas

pressures and

adjust if necessary.

Does the ignitor spark?

Replace igniter or

ignition cable.

YES

NO

Is the unit equipped

with gas heat or

electric heat?

GAS

Is there voltage across

HC1 & HC2 coils?

Do the elements

produce heat?

Correct the wiring

to the HC1 and/or

HC2 coils.

Correct wiring

between supply,

contacts and

elements. Replace

contactors and/or

elements if

necessary.

UNIT

OPERATIONAL.

ELECTRIC

NO

YES

NO

YES

T012D

Electronic Control Trouble shooting

70291301

T012D

79

Electronic Control Troubleshooting

Note: Tests are conducted with unit

running and calling for heat.

All voltage checks are referenced

to transformer neutral.

Correct wiring

between FS-2 and

COM of lint drawer.

Is there voltage on

FS-2 of EDC control?

Is there voltage

on FS-1 of

EDC control?

Correct wiring

between COM of

airflow switch and

FS-1 of EDC

control.

Is there voltage on

COM of airflow

switch?

Check for proper

function of airflow

switch and replace

if necessary.

Is there voltage across

COM & N.C. terminal

of airflow switch?

Correct wiring

between terminal

7 on motor

control relay and

N.C. terminal on

airflow switch.

Is there voltage on

terminal 7 of motor

control relay?

Replace motor

control relay.

Is there voltage across

terminals 7 & 4 of

motor control relay?

Correct wiring

between terminal

3 of fan motor

centrifugal switch

and terminal 4 of

motor control relay.

Is there voltage on

terminal 3 of fan

motor centrifugal

switch?

Replace fan motor.

Is there voltage across

terminals 3 & 5 of

fan motor centrifugal

switch?

Correct wiring

between cabinet

limit and terminal

5 of fan motor

centrifugal switch.

Is there voltage to the

input side of the

cabinet limit?

Replace cabinet

limit.

Is there voltage across

cabinet limit?

Correct wiring

between stove limit

and cabinet limit.

Is there voltage to the input side of the stove

limit?

NO

YES

Is the

thermistor

operational?

Replace EDC

control.

Replace

thermistor.

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

Continued on next

page.

Single and stacked

units.

T032D

43.Will Not Heat – Gas – EDC Models

80

T032D

70291301

43.Will Not Heat – Gas – EDC Models (continued)

Replace the stove

limit.

Is there voltage to the

output side of the stove

limit?

Correct wiring

between terminal

2 of ICM board

and stove limit.

Is there voltage to

terminal 2 of the ICM

board?

Replace ICM board.

Is there voltage at

terminal 1 of ICM

board?

Correct wiring

between gas valve

and ICM board.

Is there voltage across

the coils of the gas

valve?

Replace gas valve

coils or complete

gas valve.

Is there gas flow

through the gas valve?

Replace high voltage ignition cable or igniter.

Does the igniter spark?

Unit operational.Is there a flame?

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

T033D

Electronic Control Trouble shooting

70291301

T033D

81

Electronic Control Troubleshooting

NOTE: The following tests are conducted with

the Heat Timer in the "ON" position with the

machine running and calling for heat. Voltage

checks are referenced to transformer neutral.

Is there voltage across

terminals 1 & 6 of

the temp control bd?

Is there voltage across

terminals 5 & 6 of

the temp control bd?

YES

NO

there voltage at

airlow switch

N.C. terminal to

transformer

NO

Replace inoperative

switch or correct

airflow vane operation.

NO

YES

Is there voltage at terminal 6 on CR1 to transformer neutral?

NO

Correct wiring between

airlow switch and

terminal 6 on CR1.

Is there voltage from

terminal 4 on CR1 to

transformer neutral?

Replace CR1.

YES

NO

YES

Is there voltage from terminal 6 on CR2 to transformer neutral?

Correct wiring

between terminal 6

on CR2 to terminal

4 on CR1.

NO

YES

Is there voltage from terminal 4 on CR2 to transformer neutral?

Replace CR2.

NO

YES

Correct wiring

between CR2

terminal 4 &

terminal 1 on

temp control

board.

Is the thermistor

shorted or open?

NO

YES

Replace thermistor.

Replace the

temperature

control board.

YES

CONTINUED

ON NEXT

PAGE

Single and stacked units with and without time

delay boards.

Is unit equipped with

time delay board?

NO

YES

Is there

voltage to

terminal 3 of

fan motor?

NO

YES

Correct wiring

between fan motor

terminal 3 and CR1

terminal 4.

there voltage

across terminal

3 & 5 of fan

motor?

Replace fan motor.

YES

NO

Correct wiring

between motor

terminal 5 and

temp control board

terminal 1.

Replace selection

switch.

Is the temperature

selection switch

shorted or open?

YES

NO

T044D

Is

neutral?

Is

44.Will Not Heat – Gas – Manual Timer

82

T044D

70291301

44.Will Not Heat – Gas – Manual Timer (continued)

Is there voltage to the

input side of the

cabinet limit?

Correct wiring

between cabinet

limit and temp

control board.

YES

NO

Is there voltage to the

output side of the

cabinet limit?

YES

NO

Replace the cabinet

limit.

Is there voltage to the

input side of the stove

limit?

NO

YES

Correct wiring

between stove limit

and cabinet limit.

Is there voltage to the

output side of the stove

limit?

NO

YES

Replace the stove

limit.

Is there voltage across

terminals 2 & 3 of

ICM board?

YES

NO

Correct wiring

between ICM board

and stove limit.

Is there voltage across

terminals 1 & 3 of

the ICM board?

YES

UNIT OPERATIONAL

NO

Replace ICM board

Note: Voltage checks are referenced to

transformer neutral.

Is there voltage across

the coils of the gas

valve?

NO

YES

Correct wiring

between gas valve

and ICM board.

Is there gas flow

through the gas valve?

Does the igniter spark?

Is there a flame?

Replace gas valve

or gas valve coils.

Replace high

voltage cable or

igniter.

NO

YES

NO

YES

NO

YES

TMB1834S

Electronic Control Trouble shooting

70291301

TMB1834S

83

Electronic Control Troubleshooting

Is there voltage across

terminals 1 & 6 of

the temp control bd?

Is there voltage across

terminals 5 & 6 of

the temp control bd?

YES

NO

Is there voltage at

airflow switch N.C.

terminal to transformer

neutral?

NO

Replace inoperative

switch or correct

airflow vane operation.

NO

YES

Is there voltage at

COM on switch B to

transformer neutral?

NO

Correct wiring

between airflow

switch and COM on

switch B.

Is there voltage from

N.C. on switch B to

transformer neutral?

Replace switch B.

YES

NO

YES

Is there voltage from

terminal 6 on CR2 to

transformer neutral?

Correct wiring between terminal 6 on CR2 to terminal

N.C. on switch B.

NO

YES

Is there voltage from

terminal 4 on CR2 to

transformer neutral?

Replace CR2.

NO

YES

Correct wiring

between terminal

4 on CR2 &

terminal 1 on

temp control

board.

Is the thermistor

shorted or open?

NO

YES

Replace thermistor.

Replace the

temperature

control board.

YES

CONTINUED

ON NEXT

PAGE

Single and stacked

tumblers with

and without time delay.

Is the unit equipped

with a time delay

board?

NO

YES

Is there voltage on

terminal 3 of fan motor

to transformer

neutral?

With fan motor

running is there voltage

from terminal 5 to

transformer

neutral?

Correct wiring

between terminal

3 of fan motor

and N.C. terminal

on switch B.

NO

YES

Replace fan motor.

Is there voltage on

terminal 1 of temp

board to transformer

neutral?

NO

YES

NO

YES

Correct wiring between terminal 1 of temp board

to terminal 5 of fan motor.

Power supply to

temp control

board is good.

Is temperature

selection switch

shorted or open?

Replace selection

switch.

YES

NO

T090D

45.Will Not Heat – Gas – Rotary Coin Drop

84

T090D

70291301

Electronic Control Trouble shooting

Is there voltage to the

input side of the

cabinet limit?

Correct wiring

between cabinet

limit and temp

control board.

NO

Is there voltage to the

output side of the

cabinet limit?

YES

NO

Replace the cabinet limit.

Is there voltage to the

input side of the stove

limit?

NO

YES

Correct wiring

between stove limit

and cabinet limit.

Is there voltage to the

output side of the stove

limit?

NO

YES

Replace the stove

limit.

Is there voltage across

terminals 2 & 3 of

the ICM board?

YES

NO

Correct wiring

between ICM

board and stove

limit or neutral.

Is there voltage across

terminals 1 & 3 of

the ICM board?

Does the igniter spark?

YES

Is there a flame?

UNIT

OPERATIONAL

NO

Replace the ICM

board.

Replace high voltage ignition cable or igniter.

NO

YES

Note: Voltage checks are referenced to

transformer neutral.

Is there voltage across

the coils of the gas

valve?

NO

YES

Correct wiring

between gas valve

and ICM board.

Is there gas flow

through the gas valve?

NO

YES

Replace gas valve

coils or complete

gas valve.

NO

YES

T091D

45.Will Not Heat – Gas – Rotary Coin Drop (continued)

70291301

T091D

85

Electronic Control Troubleshooting

46.Will Not Heat – Steam – EDC Models

Note: Tests are conducted with unit running

and calling for heat.

All voltage checks are referenced to

transformer neutral.

Is there voltage on

FS-2 of EDC control?

YES

Replace

thermistor.

Is there voltage

on FS-1 of

EDC control?

YES

Is there voltage on

COM of airflow

switch?

NO

Is the

thermistor

operational?

NO

Single and stacked

units.

Correct wiring

between FS-2 and

COM of lint drawer.

Replace EDC

control.

NO

YES

Correct wiring

between COM of

airflow switch and

FS-1 of EDC

control.

Is there voltage on

terminal 3 of fan

motor centrifugal

switch?

YES

Is there voltage across

terminals 3 & 5 of

fan motor centrifugal

switch?

NO

Is there voltage to the

input side of the

cabinet limit?

NO

YES

NO

Correct wiring

between terminal 3

of fan motor

centrifugal switch

and terminal 4 of

motor control relay.

Replace fan motor.

Correct wiring

between cabinet

limit and terminal 5

of fan motor

centrifugal switch.

YES

Is there voltage across

COM & N.C. terminal

of airflow switch?

NO

Is there voltage on

terminal 7 of motor

control relay?

YES

Is there voltage across

terminals 7 & 4 of

motor control relay?

NO

YES

NO

YES

Check for proper

function of airflow

switch and replace if

necessary.

Correct wiring

between terminal 7

on motor control

relay and N.C.

terminal on airflow

switch.

Replace motor

control relay.

YES

Is there voltage across

cabinet limit?

NO

Is there voltage to the

input side of the stove

limit?

YES

Continued on next

page.

YES

NO

Replace cabinet

limit.

Correct wiring

between stove limit

and cabinet limit.

T096D

86

70291301

46.Will Not Heat – Steam – EDC Models (continued)

Replace the stove

limit.

Is there voltage to the

output side of the stove

limit?

Correct wiring to

steam valve coil.

Is there voltage across

steam valve coil?

Repair or replace

steam valve.

Does steam valve

operate properly?

Check for proper

steam supply.

Correct if necessary.

Is heat produced?

NO

YES

NO

YES

NO

YES

NO

YES

Unit operational.

T097D

Electronic Control Trouble shooting

T097D

70291301

87

Electronic Control Troubleshooting

NOTE: The following tests are conducted with

the Heat Timer in the "ON" position with the

machine running and calling for heat. Voltage

checks are referenced to transformer neutral.

Is there voltage across

terminals 1 & 6 of

the temp control bd?

Is there voltage across

terminals 5 & 6 of

the temp control bd?

YES

NO

Is there voltage at

airflow switch N.C.

terminal to transformer

neutral?

NO

Adjust the airflow

switch or replace if

inoperative.

NO

YES

Is there voltage at terminal 6 on CR1 to transformer neutral?

NO

Correct wiring

between airflow

switch and

terminal 6 on CR1.

Is there voltage from

terminal 4 on CR1 to

transformer neutral?

Replace CR1.

YES

NO

YES

Is there voltage from

terminal 6 on CR2 to

transformer neutral?

Correct wiring between terminal 6 on CR2 to terminal

4 on CR1.

NO

YES

Is there voltage from

terminal 4 on CR2 to

transformer neutral?

Replace CR2.

NO

YES

Correct wiring

between CR2 terminal 4 &

terminal 1 on

temp control

board.

Is the thermistor

shorted or open?

NO

YES

Replace thermistor.

Replace the

temperature

control board.

YES

CONTINUED

ON NEXT

PAGE

Single and stacked units with and without time

delay boards, manual timers.

Is unit equipped with

time delay board?

NO

YES

Is there

voltage to

terminal 3 of

fan motor?

NO

YES

Correct wiring

between fan motor

terminal 3 and

CR1 terminal 4.

Is there voltage

across terminal

3 & 5 of fan

motor?

Replace fan motor.

YES

NO

Correct wiring

between motor

terminal 5 and

temp control

board terminal 1.

Replace selection

switch.

Is temperature

selection switch

shorted or open?

YES

NO

T019D

47.Will Not Heat – Steam – Manual Timer

88

T019D

70291301

47.Will Not Heat – Steam – Manual Timer (continued)

Is there voltage to the

input side of the

cabinet limit?

Correct wiring

between cabinet

limit and temp

control board.

YES

NO

Is there voltage to the

output side of the

cabinet limit?

YES

NO

Replace the cabinet

limit.

Is there voltage to the

input side of the stove

limit?

NO

YES

Correct wiring

between stove limit

and cabinet limit.

Is there voltage to the

output side of the stove

limit?

NO

YES

Replace the stove

limit.

Is there voltage across

the coil of the steam

valve?

YES

NO

Correct wiring to

the steam valve.

Do the steam valves

operate properly?

YES

UNIT OPERATIONAL

NO

Replace steam

valve.

Note: Voltage checks are referenced to

transformer neutral.

Is heat produced?

NO

YES

Check for proper

steam supply.

Correct if necessary.

T020D

Electronic Control Trouble shooting

70291301

T020D

89

Electronic Control Troubleshooting

Change primary

fuse.

Correct wiring

between transformer

and primary fuse.

Replace

transformer.

Correct wiring

between secondary

fuse and

transformer.

Replace secondary

fuse.

Correct wiring

between N.O.

terminal of door

switch and

secondary fuse.

Check for proper

operation, replace

door switch if

necessary.

Correct wiring

between N.O. of

lint panel switch

and COM of door

switch.

YES

NO

Continued on next

page column 1.

Note: Reference voltage to

transformer secondary neutral

terminal 3.

Connect supply

and run unit.

Correct wiring between primary fuse and supply.

Continued on next

page column 2.

Replace thermister.

YES

NO

YES

Reference voltage to

transformer neutral

terminal 3.

Testing conducted with unit running and calling for heat.

Reference voltage to

supply neutral.

Is power supplied to

unit?

Is there voltage to

output of primary

fuse(s)?

there voltage across

terminals 1 & 2 on

primary of

transformer?

Is there voltage across

terminals 2 & 3 of

transformer

secondary?

Is there voltage to input

of secondary fuse?

Is there voltage to

output of secondary

fuse?

Is there voltage to

N.O terminal of door

switch?

With door closed is

there voltage to COM

of door switch?

Is there voltage to

N.O. of lint panel

switch?

Is there voltage to input

of primary fuse(s)?

Is the thermister

operating properly?

Is there votlage at

terminal 5 on OPL

Micro?

T003D

Is

48.Will Not Heat – Steam – OPL Microprocessor

90

T003D

70291301

Electronic Control Trouble shooting

48.Will Not Heat – Steam – OPL Microprocessor (continued)

The following tests are

Column 1

Column 2

conducted with the unit running

and calling for heat.

Is there voltage to

COM of lint panel

switch with lint panel

closed?

YES

Is there voltage at

terminal 8 of OPL

Micro?

YES

Is there voltage to

terminal 13 of OPL

Micro?

YES

Is there voltage at

terminal 6 of OPL

Micro?

YES

Replace OPL Micro.

NO

Check for proper

operation and

replace lint panel

switch if necessary.

Correct wiring

between terminal

8 of OPL Micro

and COM of lint

panel switch.

Replace OPL Micro.

Correct wiring

between terminal

6 & 13 on OPL

Micro.

Three phase

Is there voltage at

COM of airflow

switch?

YES

Is there voltage at

N.C. terminal of

airflow switch?

YES

Is the unit supplied with

single phase or three

phase power?

Single phase

Is there voltage at

terminal 7 of motor

control relay ?

YES

NO

replace if necessary.

NO

Correct wiring

between COM &

OPL Micro.

Check for proper

operation and

Correct wiring

between terminal

7 of motor control

relay and N.C. of

airflow switch.

Is there voltage to

terminal 14 on motor

control relay?

YES

Is there votlage to

terminal 13 of motor

control relay?

NO

Replace motor

control relay.

NO

YES

Correct wiring

between terminal 14

on motor control

relay and N.C.

terminal of airflow

switch.

Is there voltage at

terminal 4 of motor

control relay?

YES

Is there voltage at

terminal 3 of fan

motor centrifugal

switch?

YES

Is there voltage at

terminal 5 of fan

motor centrifugal

switch?

YES

Continued on next

page.

NO

Replace motor

control relay.

Correct wiring

between fan motor

centrifugal switch

and motor control

relay.

Replace fan motor.

T004D

70291301

91

Electronic Control Troubleshooting

Correct wiring

between cabinet

limit and terminal 5

of fan motor

centrifugal switch.

Is there voltage to the

input of the cabinet

limit?

Replace cabinet

limit.

Is there voltage to

output of cabinet limit?

Correct wiring

between stove limit

and cabinet limit.

Is there voltage to input

of stove limit?

Replace stove limit.

Is there voltage to the

output side of the stove

limit?

Replace or rebuild

steam valve.

Does the steam valve

operate properly?

Check for proper

steam supply.

Correct if necessary.

Is heat produced?

Continued from column 2 of

previous page.

NO

YES

NO

YES

Correct wiring to steam valve coil.

NO

Is there voltage across

steam valve coil?

YES

UNIT

OPERATIONAL.

TMB1835S

48.Will Not Heat – Steam – OPL Microprocessor (continued)

92

TMB1835S

70291301

49.Will Not Heat – Steam – Rotary Coin Drop

Single and stacked

tumblers with

and without time delay.

Electronic Control Trouble shooting

Is there voltage across

YES

Is there voltage across

terminal 3 of fan motor to

terminals 1 & 6 of

the temp control

board?

YES

terminals 5 & 6 of

the temp control

board?

NO

Is the thermistor

shorted or open?

NO

Is temperature

selection switch

shorted or open?

NO

Replace the

temperature

control board.

Is there voltage on

transformer neutral?

YES

NO

YES

Replace thermistor.

YES

NO

Replace selection

switch.

Correct wiring

between terminal

3 of fan motor

and N.C. terminal

on switch B.

YES

Is there voltage at

airflow switch N.C.

terminal to transformer

neutral?

YES

Is there voltage at COM on switch B to transformer neutral?

YES

Is there voltage from

N.C. on switch B to

transformer neutral?

YES

Is the unit equipped

with a time delay

board?

NO

Is there voltage from terminal 6 on CR2 to transformer neutral?

YES

Adjust the airflow

NO

switch or replace if

inoperative.

Correct wiring between

NO

airflow switch and

COM on switch B.

NO

Replace switch B.

NO

Correct wiring

between terminal 6

on CR2 to terminal

N.C. on switch B.

With fan motor

running is there voltage

from terminal 5 to

transformer

neutral?

YES

Is there voltage on

terminal 1 of temp

board to transformer

neutral?

YES

CONTINUED

ON NEXT

PAGE

70291301

Power supply to

temp control

board is good.

NO

Replace fan motor.

Correct wiring

between terminal

NO

1 of temp board

to terminal 5 of

fan motor.

Is there voltage from

terminal 4 on CR2 to

transformer neutral?

YES

Correct wiring

between terminal

4 on CR2 &

terminal 1 on

temp control

board.

NO

Replace CR2.

T066D

93

Electronic Control Troubleshooting

49.Will Not Heat – Steam – Rotary Coin Drop (continued)

Note: Voltage checks are referenced to

transformer neutral.

Is there voltage to the

input side of the

cabinet limit?

YES

Is there voltage to the

output side of the

cabinet limit?

YES

Is there voltage to the

input side of the stove

limit?

YES

Is there voltage to the

output side of the stove

limit?

NO

Correct wiring

between cabinet

limit and temp control board.

Replace the cabinet

limit.

Correct wiring

between stove limit

and cabinet limit.

Replace the stove

limit.

Is heat produced?

YES

UNIT

OPERATIONAL

Check for proper

NO

Correct if necessary.

steam supply.

YES

Is there voltage across

coil of steam valve?

YES

Does the steam valve

operate properly?

YES

NO

Correct wiring to

steam valve

Replace or rebuild

steam valve.

TMB1836S

94

70291301

Micro Display Control Troubleshooting

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

Does the display on the

electronic control

increment properly?

Is connector H2 on t

he

control firmly seated in

its receptacle?

Are wires exiting coin

drop optical sensor cracked or broken?

Exit diagnostic

testing and reset

control. (Prompting

for vend price)

Reconnect and run

diagnostic test

again.

Reconnect and run

diagnostic test

again.

Replace coin drop

or optic switch.

Replace coin drop.

If problem still exists

then replace the

electronic control.

Start coin drop

diagnostic tests.

YES

NO

YES

NO

YES

NO

Single and stacked units. Gas and electric heat. Single and three

phase power supply.

TMB1837S

Is the 3 pin connector

between coin drop and

control connected

correctly?

TMB1837S

50.Coins Ignored When Entered

Section 6

70291301

95

Micro Display Control Troubleshooting

Is there 24 VAC across

H1-1 & H1-3 on

the control?

Replace Electronic

Control.

Is there power supplied

to the unit?

NO

Is there 120 VAC at input

of primary fuses?

Is there 120 VAC at

output side of the

primary fuses?

Is there 120 VAC across

terminals 1 & 2 of

transformer primary?

Plug unit in and

start cycle.

Correct wiring

between primary

fuse and power

supply.

Replace primary

fuse(s).

Correct wiring

between primary

fuse and

transformer.

Is there 24 VAC across

terminals 1 &

4 of transformer

secondary?

Replace

transformer.

Is there 24 VAC at

the input of the

secondary fuse?

Is there 24

VAC at

output side of

secondary fuse?

Correct wiring

between secondary

fuse and

transformer.

Replace secondary

fuse.

Correct wiring

between control and

secondary fuse.

YES

NO

YES

NO

YES

(8)

(1)

(2)

(3)

(4)

(5)

(6)

(7)

Gas, steam and electric heat. Single and three phase power supply.

TMB249S

51.Control Has No Display

96

70291301

Control Has No Display

TMB1767S

PRIMARY

FUSE

AGC-2A

250V

SECONDARY

FUSE

MDL-3.5A

250V

N

DOOR

SWITCH

WHT

CHASSIS GROUND

LINT

PANEL

SWITCH

CABINET

LIMIT

THERMOSTAT

AIR FLOW

SWITCH

BLK

L1

RED

LT. BLU

SERVICE

TB1

BLK

RED

RED/WHT

N.O.

COM COM

N.O.

BRN/RED

ORG/BRN

COM

N.O.

N.C.

1

2

1

2

BLK

THERMISTOR

RED/BLU

WHT

RED/WHT

RED/BLK

WHT/VLT

RED/BLK

RED

WHT/BLU

SECONDARY

FUSE

1.25 T

250V

RED

WHT

3

4

GRN/YEL

WHT

8910

H4

025 & 030 MODELS

L2

24V

3.5A

120V

24V

1.5A

24Vac Ret

H3-1 & H3-2

Iin= 3-30ma

TIME 20msec MIN.

START PULSE INPUT

MACHINE RUNNING

AVAILABLE OUTPUT

SEE VEND

APPLICATION DETAIL

H2-2

H2-1

FS-2

H1-2

512386411109712

COIN DROPS

H5

24Vac

H1-4

123 45 6

7

H6

24Vac Ret

Imax=5ma

H3-3 & H3-4

Vmax=28Vdc

OPTO OFF WHEN

HEAT RELAY

MOTOR RELAY

H2-5

DOOR SENSING CIRCUIT ALLOWS

VOLTAGE CONFIGURATION INPUT

JUMPER H2-2 TO H2-5 AS FOLLOWS:

240Vac - 13.6K ohm 10 watt

CONTROL TO TURN ON MOTOR

RELAY ONLY WHEN DOOR IS

CLOSED & SWITCH IS PRESSED

24Vac - WIRE JUMPER

120Vac - 6.8K ohm 5 watt

MDC CONTROL

CONTROL

POWER

SUPPLY

24VAC

H1-1

H1-3

H11L1

4

6

5

3

21

H3

100 OHM

1/4 watt

4N25

H2-4

H2-3

FS-1

1

H2-6

Door Sense Ret

CIRCUIT CONTROLS

HEAT RELAY

TEMP. REGULATING

10

H4

897 45623

1

2

3

4

5

6

7

TMB1767S

Micro Display Control Troubleshooting

70291301

97

Micro Display Control Troubleshooting

TMB205S

52.Door Open Indicator

(1)

Is there voltage at

H2-1 on the Electronic

control?

NO

Is there power supplied

to the unit?

YES

(2)

Is there 120 VAC at input

of primary fuses?

YES

Gas, steam and electric heat. Single and three phase power supply.

YES

NO

Replace Control.

Plug unit in and

start cycle.

Correct wiring between primary fuses and power

supply.

Reference voltage

checks to transformer

neutral.

(6)

Is there 24 VAC at

the input of the

secondary fuse?

YES

(7)

Is there 24 VAC at

output side of

secondary fuse?

YES

(8)

Is there 24 VAC at

N.O. of door

switch?

YES

NO

Correct wiring

between secondary

fuse and

transformer.

Replace secondary

fuse.

Correct wiring

between N.O. and

output of secondary

fuse.

(3)

Is there 120 VAC at

output side of the

primary fuses?

YES

(4)

Is there 120 VAC across

terminals 1 & 2 of

transformer primary?

YES

(5)

AC across

V

Is there 24

terminals 2 & 3

transformer secondary?

of

YES

NO

Replace primary

fuse(s).

Correct wiring between primary

fuses and

transformer.

Replace

transformer.

(9)

With door closed is

there 24 VAC to

COM of door

switch?

YES

(10)

Is there 24 VAC at

N.O. of lint drawer

switch?

YES

(11)

AC at

V

Is there 24

COM of lint drawer

switch with lint

panel closed?

YES

Correct wiring

between H2-1 of

electronic control

and COM of lint

drawer switch.

NO

Check for proper

function of door

switch replace if

necessary.

Correct wiring between N.O. on lint drawer and COM on

door switch.

Check for proper

operation replace if

necessary.

98

TMB250S

70291301

ALLIANCE CHD30STG2-CTT30N, CHD30STG2-CAT30L, CHD30STG2-CAT30N, CHD30STG2-CTT30L, CHD30STG2-CUT30L Troubleshooting Manual

Specifications and Main Features

Frequently Asked Questions

User Manual