Alliance Laundry Systems JC50CG, ATB50CG, JC50EG, JCB50CG, JCB50EG Troubleshooting Manual

Drying Tumblers

50 Pound Capacity 75 Pound Capacity

Refer to Page 5 for Model Numbers

Troubleshooting

www.comlaundry.com

T012c

Part No. 70410501

September 2007

Table of

Section 1 – Safety Information ...............................................................3

Locating An Authorized Service Person ...............................................4

Contents

Section 2 – Introduction..........................................................................5

Model Identification ..............................................................................5

Customer Service...................................................................................6

Serial Plate Location..............................................................................6

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

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

How A Tumbler Works.........................................................................8

Section 3 – Troubleshooting..................................................................10

1. Motor Does Not Start..................................................................11

2. Motor Overload Protector Cycles Repeatedly ............................13

3. Motor Runs But Cylinder Does Not Turn...................................14

4. Motor Does Not Stop..................................................................15

5. Heating Element Does Not Heat Or Burner Does Not Ignite

– Gas and Electric Models ..........................................................16

6. Pilot Does Not Ignite – Standing Pilot Ignition Gas Models......18

7. Pilot Goes Out – Standing Pilot Ignition Gas Models ................19

8. Igniter Does Not Shut Off After Gas Ignition

– Automatic Pilot Ignition Gas Models ......................................20

9. Gas Supply Sufficient But Igniter Does Not Glow

– Glow-Bar Ignition Gas Models................................................21

10. Igniter Glows, Sensor Opens But No Ignition

– Johnson Controls System Gas Models.....................................22

11. Igniter Glows, Sensor Opens But No Ignition

– White Rodgers Glow-Bar Ignition Gas Models.......................23

12. Burner Ignites and Goes Out Repeatedly

– Glow-Bar Ignition Gas Models................................................24

13. Heating Element or Burner Shuts-Off Prematurely....................25

14. Heating Element or Burner Repeatedly Cycles Off On

High Limit Thermostat................................................................26

15. Heating Element or Burner Does Not Shut-Off..........................27

16. Clothes Do Not Dry ....................................................................28

17. Tumbler Overheating ..................................................................29

18. Burners Not Burning Properly – Gas Models.............................30

19. Loading Door Opens During Operation......................................31

20. Tumbler Runs But No Steam To Coils – Steam Models............32

21. Water In Steam Line – Steam Models ........................................33

22. Troubleshooting Electronic Control Models...............................34

23. Tumbler Will Not Start, Time on Drying Timer,

Door Closed – Manual Timer Models ........................................36

24. Motor Runs, Time on Drying Timer But No Heat......................37

25. No Spark to Pilot Burner – Electronic Pilot Ignition Models.....39

26. Spark to Pilot Burner, No Pilot Flame

– Electronic Pilot Ignition Models..............................................40

27. Spark To Pilot Burner, Pilot Lights, No Main Burner

– Electronic Pilot Ignition Models..............................................41

the expressed written consent of the publisher.

70410501 1

28. Igniter Does Not Glow – Johnson Controls

Glow-Bar System........................................................................42

29. Igniter Glows Constantly – Johnson Controls and

White Rodgers Glow-Bar System...............................................43

30. Igniter Glows, Cycles Off But Burner Does Not Ignite

– Johnson Controls Glow-Bar System........................................44

31. Igniter Does Not Glow – White Rodgers Glow-Bar System......45

32. Igniter Glows, Cycles Off But Burner Does Not Ignite

– White Rodgers Glow-Bar System............................................46

33. Igniter Sparks, No Main Burner Ignition

– Instant Electronic Ignition........................................................47

34. CSH OM Models: No Heat With Cycle Selected,

Unit Running and Calling For Heat............................................48

35. OM Models: No Start With Cycle Selected, Start Button

Pressed and Door Closed ............................................................50

36. OM Models: No Display After Selecting One Of The

ON/SELECT Keys......................................................................52

37. CE OM Models: No Heat With Cycle Selected, Unit

Running and Calling For Heat ....................................................53

38. CG OM Models: No Heat With Cycle Selected, Unit

Running and Calling For Heat ....................................................55

39. OM Models: No Fan Motor Rotation With Cycle Selected

and Start Pressed.........................................................................57

40. MM Models: Fan Motor Does Not Run With Door Closed,

Cycle Selected and Start Button Pressed ....................................58

41. MM Models: Cylinder Motor Does Not Run or Reverse With Door Closed, Cycle Selected and Start Button Pressed In

Reversing Mode or Nonreversing Mode.....................................59

42. MM Models: No Heat With Cycle Selected, Unit Running

and Calling For Heat...................................................................61

43. MM Models: No Heat With Cycle Selected, Unit Running

and Calling For Heat...................................................................63

44. OM Reversing Models: No Cylinder Rotation or Reversing

Capabilities..................................................................................65

45. MM Models: No Display After Pressing the ON/SELECT

Keys ............................................................................................67

46. MM Models: Motor Does Not Run With Door Closed, Cycle

Selected and Start Button Pressed...............................................68

47. MM Models: Cylinder Motor Does Not Run or Reverse With Door Closed, Cycle Selected and Start Button Pressed In

Reversing Mode or Nonreversing Mode.....................................69

48. MM Nonreversing Models: Motor Does Not Run With Door

Closed, Cycle Selected and Start Button Pressed .......................71

49. CD Models: No Start With Vend Satisfied and Start Button

Pushed.........................................................................................73

50. CD Models: No Heat With Vend Satisfied and Unit Running ...75

51. CD Models: No Heat With Vend Satisfied and Unit Running ...77

52. CD Models: No Start With Vend Satisfied and Start Button

Pushed.........................................................................................79

53. CD Models: No Start With Vend Satisfied and Start Button

Pushed.........................................................................................81

Section 4 – Adjustments........................................................................82

54. Cylinder Clearance......................................................................82

2 70410501

Section 1

Safety Information

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

DANGER

DANGER indicates the presence of a hazard that will cause severe personal injury, death, or substantial property damage if the danger is ignored.

WARNING

WARNING indicates the presence of a hazard that can cause severe personal injury, death, or substantial property damage if the warning is ignored.

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

WARNING

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

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

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

W006R2

CAUTION

CAUTION indicates the presence of a hazard that will or can cause minor personal injury or property damage if the caution is ignored.

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

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

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

70410501 3

Safety Information

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

WARNING

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

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

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

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.

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

CAUTION

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

4 70410501

Section 2

Introduction

Model Identification

Information in this manual is applicable to these models:

Gas Steam/Thermal Oil Electric

50

Pound

75

Pound

AT B 50 C G DCB50CG DCB50EG DTB50CG DTB50EG JC50CG JC50EG JCB50CG JCB50EG JT37CG JT37CGI JT37EG JT37EGI JT50CG JT50CGI JT50EG

AT B 75 C G DCB75CG DCB75FG DTB634 DTB75CG DTB75EG DTB75FG JCB75CG

JT50EGI JTB50CG JTB50EG SC50CG SC50EG SCB50CG SCB50EG ST37CG ST37CGI ST37EG ST37EGI ST50CGI ST50EGI STB50CG STB50EG TKD50CGMT

JT75CG JT75EG JTB75CG JTB75EG SCB75CG ST75CG STB634 STB75CG STB75EG

AT B 50 C S H DCB50CSH DTB50CSH DTB50CSL JC50CSH JCB50CSH JT37CSH JT37CSL JT50CSH JT50CSL

AT B 75 C S H DCB75CSH DCB75CSL DTB75CSH DTB75CSL JCB75CSH JCB75CSL JT75CSH JT75CSL

JTB50CSH JTB50CSL SC50CSH SCB50AT SCB50CSH ST37CSH ST37CSL ST50CSH ST50CSL STB50CSH STB50CSL

JTB75CSH JTB75CSL SCB75CSH SCB75CSL ST75CSH ST75CSL STB75CSH STB75CSL

DCB50CE DTB50CE JC50CE JCB50CE JT37CE JT50CE JTB50CE SC50CE SCB50CE ST37CE ST50CE STB50CE TKD50CEMT

DCB75CE DTB75CE JCB75CE JT75CE JTB75CE SCB75CE ST75CE STB75CE

70410501 5

Introduction

Customer Service

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

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

Serial Plate Location

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

T419IE3B

6 70410501

Safety Warnings and Decals

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

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

Safety Precautions for Servicing Tumblers

• Disconnect electrical service.

• Shut off supply gas valve before servicing gas components.

• Control panel and access panel MUST be reinstalled after inspection or servicing of tumbler is completed.

Introduction

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

• Chain/drive guard MUST be reinstalled after inspection or servicing of tumbler is completed.

• Belt guard MUST be reinstalled after inspection or servicing of tumbler is completed.

• Contactor box cover MUST be reinstalled after inspection or servicing of electric and/or reversing tumbler is completed.

• Loading door switch MUST be operational before putting tumbler into service.

• Junction box cover MUST be reinstalled after inspection or servicing of tumbler is completed.

70410501 7

Introduction

How A Tumbler Works

Fresh Air Combustion Air Mixed Air Exhaust Air

Standard Models

The tumbler uses heat, air and movement to dry loads of laundry.

When the motor is started, the exhaust fan pulls fresh air in through the air intake and over the heat source (burner flame for gas, heating element for electric, and coil for steam).

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

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

T008CE1A

NOTE: In Energy Saver Models, some of the exhaust air is recirculated. Refer to illustration on next page.

8 70410501

Introduction

Fresh Air Combustion Air Mixed Air Recirculating Air Exhaust Air

T007CE1A

Energy Saver Models

70410501 9

Section 3

Troubleshooting

WARNING

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

• Disconnect electric power to the tumbler before servicing.

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

• Close steam valve to steam tumbler before servicing.

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

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

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

W002

10 70410501

1. Motor Does Not Start

Motor does

not start

Is the

electrical power

off or circuit breaker

fuse blown?

No

Yes

Check power

supply or replace

fuses.

Is there

broken, loose, or

incorrect

wiring?

No

Are

improper

coins inserted in

accumulator?

Yes

Refer to wiring

Check that proper

coins are inserted.

Troubleshooting

diagram.

Is the

loading door

not closed or switch

inoperative?

No

Is the

door switch

improperly

adjusted?

No

Is the start circuit

not complete?

No

Yes

Close door or

test switch and

replace if

inoperative.

Refer to

Installation

Manual

door switch

adjustment.

start switch or test switch and replace if

inoperative.

for

Press

No

Is

accumulator knob

improperly set

after coins were

inserted.

No

Is the

run switch accumulator inoperative?

No

Is the

motor relay

inoperative?

Yes

Turn knob

clockwise to its full

limit of travel.

Test run switch

and replace if

inoperative.

Test relay and

inoperative.

replace if

Have motor tested

Is the motor

inoperative?

No

70410501 11

Yes

and replace if

inoperative.

No

continued on

Troubleshooting

1. Motor Does Not Start (continued)

Continued from

trunnion bearings

binding?

No

Are

idler bearings

binding?

No

Is timer

improperly

set?

Yes

Turn drying timer

Yes

desired setting.

Replace

trunnion

bearings.

Replace

bearings.

clockwise to

No

Is timer

inoperative?

12 70410501

Yes

Test timer and

replace if

inoperative.

TMB2131S-b

2. Motor Overload Protector Cycles Repeatedly

Motor Overload

Protector

Cycles

Repeatedly

Refer to

Is voltage

correct?

No

Yes

Installation

Manual

requirements.

for

electrical

Troubleshooting

Is clothes

load too

large?

No

Is clothes

cylinder

binding?

No

Is wiring

adequate?

No

Is make-up

air adequate?

Yes

Remove part of

load.

Check cylinder

for binding.

Check with

local power

company to

ensure that

wiring is

adequate.

Refer to

Installation

Manual

make-up air

requirements.

for

No

Clean lint

Is there lint

buildup around

tumbler or poor

maintenance?

No

70410501 13

Yes

Is there

broken, loose

or incorrect

wiring?

accumulation

on and around

the motors.

Yes

Refer to wiring

diagram.

TMB1904S

Troubleshooting

3. Motor Runs But Cylinder Does Not Turn

Motor runs but cylinder

does not turn

Is cylinder belt

broken or

loose?

No

Is drive belt

broken or

loose?

No

Is cylinder

binding?

Yes

Replace or

adjust cylinder

belt.

Replace or

adjust drive

belt.

Check cylinder

for binding.

Is sheave

loose?

No

Is

drive chain or

sprocket broken

or loose?

Yes

No

Tighten

setscrews.

Replace or

adjust chain

or sprocket.

No

Is motor drive

pulley loose?

No

14 70410501

Yes

Tighten drive

pulley bushing

screws.

TMB2132S

4. Motor Does Not Stop

Troubleshooting

Motor does

not stop

Is the door

switch not

working

properly?

No

Is wiring

incorrect?

No

Is timer

or relay

inoperative?

Yes

Test switch and

replace if inoperative.

Refer to

Manual

switch adjustment.

Refer to wiring

and replace

if inoperative.

Installation

for proper

diagram.

Test timer

and relay

No

Is accumulator inoperative?

70410501 15

Yes

Test

accumulator

and replace if

inoperative.

TMB2133S

Troubleshooting

5. Heating Element Does Not Heat Or Burner Does Not Ignite – Gas and Electric Models

Heating element does

not heat or 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?

No

Is

drying timer

not selected or

inoperative?

Ye s

Refer to

Installation

Manual for

exhaust system

requirements.

Check fuses or

circuit breaker.

Set drying timer

or replace if inoperative.

Is the

airflow switch

inoperative?

No

Is airflow

switch out of adjustment?

No

Ye s

Te st switch and replace if inoperative.

Check back draft damper for foreign objects, lint accumulation or other causes that may prevent damper from opening.

Check exhaust outlet. If a screen has been improperly installed on the outlet, it may be clogged with lint or frozen over in winter. NEVER install a screen over the exhaust outlet.

Refer to Installation

Manual for airflow

switch adjustment.

No

Is

thermostat

inoperative?

No

Is there

lint

buildup?

No

Is there

inadequate

ductwork and

make-up air?

No

Ye s

Clean lint compartment.

Ye s

ductwork for lint buildup.

Ye s

Te st thermostat

and replace if

inoperative.

Check damper for lint

accumulation. Check

Refer to Installation

Manual to ensure that

ductwork and make-up

air openings are sized

accurately.

Is the lint

door panel

not closed

properly?

No

Is

there broken,

loose or incorrect

wiring?

No

Ye s

Open lint door

panel, place lint

door and panel

back on tumbler

(ensuring a tight fit).

Refer to

wiring diagram.

Continued on

16 70410501

Troubleshooting

5. Heating Element Does Not Heat Or Burner Does Not Ignite – Gas and Electric Models (continued)

Continued from

Are gas valve coils

inoperative?

Yes

Test coils and

replace if

necessary.

Electric

Models: Are

heating elements

or contactors

inoperative?

No

Gas Models:

Is there an

insufficient gas

supply?

No

Gas Models:

Are the orifices

incorrect?

No

Check heat

Yes

contactors and

elements.

Replace if

necessary.

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.

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

Gas Models:

Is main coil

inoperative?

No

Gas Models:

Is redundant coil

inoperative?

No

Standing Pilot

Ignition Gas

Models: Is pilot

not lit?

No

Yes

Test redundant coil

Yes

and replace

complete gas valve

if inoperative.

Refer to

Manual

instruction plate on

Yes

back of tumbler for

lighting and shutting down standing pilot.

Test main coil

and replace if

inoperative.

Installation

or

Gas Models:

Is there an

inoperative

igniter?

No

Gas Models:

Is the igniter control

inoperative?

No

70410501 17

Yes

Test igniter

and replace if

inoperative.

Test igniter control and

replace if

inoperative.

Standing

Pilot Ignition Gas

Models: Is gas valve

reset assembly or

thermocouple

inoperative?

No

Glow Bar

Ignition Gas Models: Is

sensor inoperative?

Yes

Check and

replace

thermocouple or

reset assembly

if necessary.

Test sensor

and replace if

inoperative.

TMB2134S-b

Troubleshooting

6. Pilot Does Not Ignite – Standing Pilot Ignition Gas Models

Pilot does not

ignite - Standing Pilot

Ignition Gas Models

Is

gas shut-off

valve to

tumbler

closed?

Yes

Open valve.

Is

thermocouple

inoperative?

Yes

Replace

thermocouple.

No

Is air present

in gas line?

No

Is pilot orifice

incorrect?

No

Is pilot gas

filter clogged?

Yes

Purge air from

gas line.

Tumbler is equipped

for type of gas

specified on serial

plate. If pilot orifice is

different from that

specified on serial

plate, obtain and

install correct orifice.

Replace reset

assembly.

No

Is pilot

assembly

inoperative?

Yes

Replace pilot

assembly.

No

Is pilot

gas tube or

pilot orifice

clogged?

No

18 70410501

Yes

Clean or

replace tube

or orifice.

TMB2135S

7. Pilot Goes Out – Standing Pilot Ignition Gas Models

Pilot goes out -

Standing Pilot Ignition

Gas Models

Is exhaust

system

improper or

inadequate?

No

Yes

Refer to

Installation

Manual

exhaust system

requirements.

for

Is pilot orifice

incorrect?

No

Yes

on serial plate,

Troubleshooting

Tumbler is

equipped for

type of gas

specified on

serial plate. If

pilot orifice is different from that specified

obtain and

install correct

orifice.

Is lint screen

clogged?

No

Is burner

flame

Improperly

adjusted?

No

Is there carbon

accumulation

on heated end

of pilot

thermocouple?

Yes

Remove and

clean lint

screen.

Close air shutter slightly - A harsh

roaring flame will

draw pilot flame out.

Wipe carbon

Yes

off end of

thermocouple.

Is gas

valve reset

assembly or

thermocouple

inoperative?

Yes

Check and

replace reset

assembly or

thermocouple

if necessary.

No

TMB2136S

70410501 19

Troubleshooting

8. Igniter Does Not Shut Off After Gas Ignition – Automatic Pilot Ignition Gas Models

Igniter does not shut off

after gas ignition -

Automatic Pilot Ignition

Gas Models

Tumbler is equipped

for type of gas

specified on serial

Is tumbler

not properly

equipped for

type of gas

being used?

No

Yes

plate. If tumbler is

equipped for gas different from that specified on serial

plate, obtain the

necessary

components to

correct the problem.

Is igniter

control

inoperative?

No

Yes

Test igniter

control and

replace if

inoperative.

Is gas supply

insufficient?

No

Is burner

flame

improperly

adjusted?

No

Is pilot and

electrode assembly

incorrectly

installed?

Yes

Open partially closed

gas shut-off valve or

correct low gas

pressure.

Refer to

Installation

Manual

recommended

burner flame

adjustment.

Yes

Check assembly

for correct alignment.

for

Is wiring

incorrect?

Refer to wiring

diagram located

Yes

on back of

tumbler or in

literature

packet.

No

TMB2137S

20 70410501

Troubleshooting

9. Gas Supply Sufficient But Igniter Does Not Glow – Glow-Bar Ignition Gas Models

Gas supply sufficient but

igniter does not glow Glow-Bar Ignition Gas

Models

Has sensor

failed with

contacts open?

No

Is igniter

broken or

open?

No

Is there no circuit for burner

operation?

Yes

Replace sensor.

Replace glow bar

igniter.

Tumbler is not

calling for heat,

check the heat

circuit to the ignition

system.

TMB2138S

70410501 21

Troubleshooting

10. Igniter Glows, Sensor Opens But No Ignition – Johnson Controls System Gas Models

NOTE: To check the primary and secondary valve coil and plunger operation, place fingers on top of coils, cycle the machine and restart ignition circuit, you should feel the primary valve coil plunger open first, followed by glow bar heat up, followed by the sensor opening, and the secondary valve coil plunger opening. If plungers do not open, electrically check the coils. Check gas pressure to tumbler. Line pressure should be 7 ± 1/2 inches (Natural Gas) or 11 inches (L.P. Gas) water column pressure. Manifold pressure should be 3.5 inches (Natural Gas) or 11 inches (L.P. Gas) water column pressure.

Igniter glows, sensor

opens but no ignition -

Johnson Controls

System Gas Models

Is gas supply

insufficient?

No

Is there gas

flow but no

ignition?

No

Is there no

gas flow

through gas

valve?

Yes

Check gas supply

and pressure.

Remove igniter and bracket and bend

“L” shaped bracket (located on left

side of stove) up or down. Reinstall

igniter and bracket and check for

1/8 to 1/4 inch gap between bottom

of igniter and top of main burner.

Check primary valve coil and plunger.

Replace coil if inoperative, or check

for 120 Volts to control relay (PR1)

coil contacts (A) and 120 Volts to

control relay (PR1) contact number 7.

If no voltage, replace control relay (PR1) or check secondary valve coil and plunger operation. Replace coil

if inoperative.

TMB2139S

22 70410501

Troubleshooting

11. Igniter Glows, Sensor Opens But No Ignition – White Rodgers Glow-Bar Ignition Gas Models

Igniter Glows, Sensor

Opens But No Ignition -

White Rodgers Glow-bar

Ignition Gas Models

Is gas supply

insufficient?

No

Is there gas

flow but no

ignition?

No

Is there no

gas flow

through gas

valve?

Ye s

Is manual

shut-off valve

in full open

position?

No

Gap between igniter

and burner must be

1/8 to 1/4 inch.

•

Check for 80 – 120 volts between red and white wire on gas valve.

•

If correct voltage is present and redundant coil does not click open, replace complete gas valve.

•

If correct voltage is not present, replace diode logic board.

•

If correct voltage is present and redundant coil clicks open, check for 40 – 60 volts across the purple wires on the main coil after the igniter cycles off.

•

If voltage is present and main coil does not st

•

If no voltage is present, replace diode logic board.

ay open, replace main coil.

Ye s

Check

gas pressure.

TMB2140S

70410501 23

Troubleshooting

12. Burner Ignites and Goes Out Repeatedly – Glow-Bar Ignition Gas Models

Burner ignites and

goes out repeatedly

- Glow-Bar Ignition Gas Models

Is there

insufficient

gas pressure?

Check gas supply

Yes

and pressure.

Low flame will

not maintain

sensor conductivity.

Does

tumbler have

improper orifices?

No

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

Are the

burner ports

plugged?

No

Is high limit

thermostat

inoperative?

No

Is the

exhaust system

improper or

inadequate?

Yes

Check burner tubes

for build-up.

Yes

Refer to

Flowchart 14

Yes

Refer to

Installation Manual

for exhaust system

equirements.

Is

there inadequate

make-up air?

No

Is

burner heat

not holding sensor

contacts open?

.

Yes

Refer to

Installation Manual

for make-up air

requirements.

Replace sensor.

No

TMB2141S

24 70410501

Alliance Laundry Systems JC50CG, ATB50CG, JC50EG, JCB50CG, JCB50EG Troubleshooting Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Safety Information

Locating An Authorized Service Person

Introduction

Model Identification

Customer Service

Serial Plate Location

Safety Warnings and Decals

Safety Precautions for Servicing Tumblers

How A Tumbler Works

Troubleshooting

1. Motor Does Not Start

2. Motor Overload Protector Cycles Repeatedly

3. Motor Runs But Cylinder Does Not Turn

4. Motor Does Not Stop