Alliance Laundry Systems JCB50CG, JCB50EG, JT37CG, DCB50CG, JT37CGI Service Manual
...
Drying Tumblers
50 Pound Capacity
Refer to Page 5 for Model Numbers
Service
www.comlaundry.com
T012C
T012c
Part No. M411429R1
July 2002
Table of Contents
Section 1 –Safety Information
Locating An Authorized Service Person..................4
Section 2 –Introduction
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
1. Motor Does Not Start.......................................11
2. Motor Overload Protector Cycles Repeatedly.12
3. Motor Runs But Cylinder Does Not Turn. ......12
4. Motor Does Not Stop.......................................12
5. Heating Element Does Not Heat or Burner
Does Not Ignite13
6. Pilot Does Not Ignite — Gas Models
(Standing Pilot Ignition) ..................................15
7. Pilot Goes Out — Gas Models
(Standing Pilot Ignition) ..................................15
8. Igniter Does Not Shut Off After Gas Ignition
— Gas Burner (Automatic Pilot Ignition) .......16
9. Igniter Does Not Glow (Gas Supply Sufficient)
— Gas Models (Glow-bar Ignition).................16
10. Igniter Glows, Sensor Opens But No Ignition
— Gas Models .................................................17
11. Igniter Glows, Sensor Opens But No Ignition
— Gas Models .................................................17
12. Burner Ignites and Goes Out Repeatedly
— Gas Models .................................................18
13. Heating Element or Burner Shuts-off
Prematurely......................................................18
14. Heating Element or Burner Repeatedly Cycles
Off On High Limit Thermostat........................19
15. Heating Element or Burner Does Not
Shut-off ............................................................19
16. Clothes Do Not Dry.........................................19
17. Tumbler Overheating.......................................20
18. Burners Not Burning Properly — Gas Models20
19. Cylinder Door Opens During Operation..........20
20. Tumbler Runs But No Steam To Coils
— Steam Models..............................................21
21. Water In Steam Line — Steam Models...........21
22. Tumbler Will Not Start, Time on Drying
Timer, Door Closed .........................................22
23. Motor Runs, Time on Drying Timer
But No Heat .....................................................23
24. No Spark to Pilot Burner.................................24
25. Spark to Pilot Burner — No Pilot Flame.........25
26. Spark To Pilot Burner — Pilot Lights
— No Main Burner..........................................26
27. Igniter Does Not Glow.....................................27
28. Igniter Glows Constantly.................................27
29. Igniter Glows, Cycles Off But Burner
Does Not Ignite................................................27
30. Igniter Does Not Glow.....................................28
31. Igniter Glows Constantly.................................28
32. Igniter Glows, Cycles Off But Burner
Does Not Ignite................................................28
33. Igniter Sparks — No Main Burner Ignition.....29
34. CSH OM Models: No Heat with cycle selected,
unit running and calling for heat......................30
35. OM Models: No Start with cycle selected, start
button pressed and door closed........................31
36. OM Models: No Display after selecting one of
the ON/SELECT keys......................................32
37. CE OM Models: No Heat with cycle selected,
unit running and calling for heat......................33
38. CG OM Models: No Heat with cycle selected,
unit running and calling for heat......................34
39. OM Models: No fan motor rotation with cycle
selected and start pressed.................................36
40. MM Models: Fan Motor Does Not Run with
door closed, cycle selected and start button
pressed .............................................................37
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...........................................38
42. MM Models: No Heat with cycle selected, unit
running and calling for heat.............................39
43. MM Models: No Heat with cycle selected, unit
running and calling for heat.............................40
44. OM Reversing Models: No cylinder rotation or
reversing capabilities .......................................41
45. MM Models: No display after pressing the ON/
Select keys .......................................................42
46. MM Models: Motor Does Not Run with
door closed, cycle selected and start button
pressed .............................................................42
© Copyright 2002, Alliance Laundry Systems LLC
All rights reserved. No part of the contents of this book may be reproduced or transmitted in any form or by any means without
the expressed written consent of the publisher.
M411429 1
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
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...........................................43
48. MM Nonreversing Models: Motor Does Not
Run with door closed, cycle selected and start
button pressed ..................................................44
49. CD Models: No start with vend satisfied and
start button pressed in ......................................45
50. CD Models: No Heat with vend satisfied
and unit running...............................................46
51. CD Models: No Heat with vend satisfied and
unit running......................................................47
52. CD Models: No start with vend satisfied and
start button pushed...........................................48
53. CD Models: No start with vend satisfied and
start button pushed...........................................49
Section 4 –Grounding
Grounding Instructions ..........................................51
Section 5 –Service Procedures
54. Control Panel ...................................................53
55. Push-to-Start Switch........................................53
56. Cooling, Drying, or Run Light ........................53
57. Relay (Manual Timers Models).......................55
58. Resistor ............................................................55
59. Cooling or Drying Timer.................................55
60. Cooling or Drying Timer Motor......................56
61. Coin Meter.......................................................57
62. Coin Meter Timer Motor .................................58
63. Coin Meter Run or Heat Switch ......................58
64. Control Thermostat..........................................59
65. Transformer .....................................................60
66. Gas Valve Assembly........................................62
67. Electronic Package...........................................64
68. Main or Pilot Operator.....................................64
69. Gas Valve.........................................................64
70. Operator ...........................................................64
71. Reset Assembly ...............................................64
72. Gas Valve.........................................................66
73. Magnetic Operators .........................................66
74. Gas Valve.........................................................66
75. Diode Logic Board ..........................................66
76. Main Coil.........................................................67
77. Igniter and Bracket ..........................................67
78. Sensor ..............................................................67
79. Igniter...............................................................67
80. Ignition Control ...............................................67
81. Gas Valve.........................................................67
82. Main Coil.........................................................68
83. Burner Tube.....................................................68
84. Contactors and Terminal Block.......................68
85. Heater Element ................................................69
86. Stove High Limit Thermostat..........................70
87. Cabinet High Limit Thermostat.......................71
88. High Limit Thermostat....................................72
89. Steam Coils......................................................73
90. Loading Door Assembly..................................73
91. Loading Door Hinge........................................74
92. Loading Door Handle......................................74
93. Front Panel.......................................................74
94. Loading Door Switch.......................................76
95. Loading Door Switch Rod...............................76
96. Airflow Switch ................................................77
97. Wire Cover or Wire Channel Cover Plate.......78
98. Drive Guard .....................................................78
99. Drive Belt ........................................................78
100. Drive Chain......................................................79
101. Idler Housing Assembly..................................79
102. Idler Sprocket...................................................80
103. Sheave..............................................................80
104. Drive Sprocket.................................................81
105. Idler Shaft ........................................................81
106. Cylinder Sprocket............................................81
107. Cylinder Assembly ..........................................82
108. Trunnion Housing Assembly...........................83
109. Trunnion Shaft Assembly................................84
110. Motor and Fan Assembly ................................85
111. Fan And Motor Assembly ...............................86
112. Cylinder Drive Motor ......................................88
113. Reversing Control Electrical Components......90
Section 6 –Adjustments
114. Leveling Legs ..................................................93
115. Main Gas Burner Air Inlet Shutters.................94
116. Airflow Switch ................................................95
117. Loading Door Switch.......................................97
118. Cylinder Door Strike .......................................97
119. Drive Belt Tension...........................................98
120. Drive Chain Tension......................................101
121. Cylinder Clearance ........................................103
2 M411429
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Section 1
Safety Information
Throughout this manual and on machine decals, you
will find precautionary statements (“CAUTION”,
“WA RN I NG ”, 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 that you
understand and have the skills to carry
out.
• Whenever ground wires are removed
during servicing, these ground wires
must be reconnected to ensure that the
product is properly grounded and to
reduce the risk of fire, electric shock,
serious injury or death.
W006R1
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.
M411429 3
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Section 1 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 M411429
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Section 2
Introduction
Model Identification
Information in this manual is applicable to these models:
Gas Steam/Thermal Oil Electric
DCB50CG
DCB50EG
DTB50CG
DTB50EG
JC50CG
JC50EG
JCB50CG
JCB50EG
JT37CG
JT37CGI
JT37EG
JT37EGI
JT50CG
JT50CGI
JT50EG
JT50EGI
JTB50CG
JTB50EG
SC50CG
SC50EG
SCB50CG
SCB50EG
ST37CG
ST37CGI
ST37EG
ST37EGI
ST50CGI
ST50EGI
STB50CG
STB50EG
TKD50CGMT
DCB50CSH
DTB50CSH
DTB50CSL
JC50CSH
JCB50CSH
JT37CSH
JT37CSL
JT50CSH
JT50CSL
JTB50CSH
JTB50CSL
SC50CSH
SCB50CSH
ST37CSH
ST37CSL
ST50CSH
ST50CSL
STB50CSH
STB50CSL
DCB50CE
DTB50CE
JC50CE
JCB50CE
JT37CE
JT50CE
JTB50CE
SC50CE
SCB50CE
ST37CE
ST50CE
STB50CE
TKD50CEMT
M411429 5
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Section 2 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 M411429
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
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.
Section 2 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.
M411429 7
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Section 2 Introduction
How A Tumbler Works
Fresh Air
Combustion Air
Mixed Air
T008CE1A
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.
NOTE: In Energy Saver Models, some of the exhaust air is recirculated. Refer to page 9.
8 M411429
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Section 2 Introduction
Fresh Air
Combustion Air
Mixed Air
Recirculating Air
Exhaust Air
T007CE1A
Energy Saver Models
M411429 9
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
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 appropriate wiring diagram for aid in testing tumbler components.
1. MOTOR DOES NOT START
POSSIBLE CAUSE TO CORRECT
Electrical power off or fuses blown. • Check power and fuses, replace fuses if necessary
Loading door not closed or inoperative door switch. • Close door, or test switch and replace if inoperative.
Door switch improperly adjusted. • Refer to Adjustment Section in this manual for door
switch adjustment.
Trunnion shaft assembly binding in
trunnion housing bearings.
Start circuit not completed. • Press start switch, or test switch and replace if
Idler shaft binding in idler housing bearings. • Replace bearings.
Inoperative motor. • Have motor tested and replace if inoperative.
Non-Metered Models: Timer improperly set. • Turn drying timer clockwise to desired setting.
Non-Metered Models: Inoperative timer or relay. • Test timer and relay and replace if inoperative.
Metered Models: Improper coins inserted in
accumulator.
Metered Models: Accumulator knob improperly
set after coins were inserted.
Metered Models: Inoperative run switch
(accumulator).
Broken, loose, or incorrect wiring. • Refer to wiring diagram located on back of tumbler or in
• Replace trunnion housing bearings.
inoperative.
• Check that proper coins are inserted.
• Turn knob clockwise to its full limit of travel.
• Test run switch and replace if inoperative.
literature packet.
W002
M411429 11
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
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.
2. MOTOR OVERLOAD PROTECTOR CYCLES REPEATEDLY
POSSIBLE CAUSE TO CORRECT
Incorrect voltage. • Refer to the Installation Manual (supplied with tumbler)
for electrical requirements.
Clothes load too large. • Remove part of load.
Clothes cylinder is binding. • Check cylinder for binding. Refer to Adjustment Section
for cylinder adjustment.
Inadequate wiring. • Check with an electrician to ensure that wiring is
adequate.
Inadequate make-up air. • Refer to Installation Manual (supplied with tumbler) for
make-up air requirements.
Poor housekeeping. • Clean lint accumulation on and around the motor.
Broken, loose, or incorrect wiring. • Refer to wiring diagram located on back of tumbler or in
literature packet.
W002
3. MOTOR RUNS BUT CYLINDER DOES NOT TURN.
POSSIBLE CAUSE TO CORRECT
Motor drive pulley loose. • Tighten setscrews.
Sheave loose. • Tighten setscrews.
Broken or loose belt. • Replace or adjust belt.
Broken or loose drive chain or sprocket. • Replace or adjust chain or sprocket.
Cylinder is binding. • Check cylinder for binding. Refer to Adjustment Section
for proper cylinder adjustment.
4. MOTOR DOES NOT STOP
POSSIBLE CAUSE TO CORRECT
Inoperative door switch or switch is out-ofadjustment.
• Test switch and replace if inoperative. Refer to
Adjustment Section for proper switch adjustment.
Non-Metered Models: Inoperative timer or relay. • Test timer and relay and replace if inoperative.
Metered Models: Inoperative accumulator. • Test accumulator and replace if inoperative.
Incorrect wiring. • Refer to wiring diagram located on back of tumbler or in
literature packet.
12 M411429
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
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.
5. HEATING ELEMENT DOES NOT HEAT OR BURNER DOES NOT IGNITE
POSSIBLE CAUSE TO CORRECT
Improper or inadequate exhaust system. • Refer to the Installation Manual (Supplied with tumbler)
for exhaust system requirements.
Blown fuses or tripped circuit breakers. • Check fuses or circuit breakers.
Drying timer not selected or inoperative. • Set drying timer or replace if necessary.
Inoperative control relay. • Test relay and replace if inoperative.
Inoperative thermostat. • Test thermostat and replace if inoperative.
Electric Models:
• Check heat contactors and elements. Replace if necessary.
Inoperative heating elements or contactors.
Gas Models:
Insufficient gas supply.
• Open partially closed gas shut-off valve, or correct low
gas pressure. Check inlet pressure and compare to
pressure specified on serial plate. If pressure cannot be
obtained, contact gas supplier.
Gas Models:
Incorrect orifices.
• Tumbler is equipped for type of gas specified on serial
plate. If orifices are different from that specified on serial
plate, obtain and install proper orifices.
Gas Models: (Standing Pilot Ignition)
Pilot is not lit.
• Refer to Installation Manual (supplied with tumbler) or
INSTRUCTION plate on back of tumbler for LIGHTING
AND SHUTTING DOWN STANDING PILOT.
Gas Models: (Standing Pilot Ignition)
Inoperative gas valve reset assembly or
• Check and replace thermocouple or reset assembly if
necessary.
thermocouple.
Gas Models:
• Test coils and replace if inoperative.
Inoperative gas valve coils.
Gas Models: (Automatic Ignition)
• Test igniter and replace if inoperative.
Inoperative igniter.
Gas Models: (Automatic Ignition)
• Test igniter control and replace if inoperative.
Inoperative igniter control.
W002
(continued on next page)
M411429 13
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
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.
5. HEATING ELEMENT DOES NOT HEAT OR BURNER DOES NOT IGNITE (continued)
POSSIBLE CAUSE TO CORRECT
Gas Models: (Glow Bar Ignition)
• Test igniter and replace if inoperative.
Inoperative igniter
Gas Models: (Glow Bar Ignition)
• Test sensor and replace if inoperative.
Inoperative sensor.
Gas and Electric Models:
• Test thermostat and replace if inoperative.
Inoperative high limit thermostat.
Gas and Electric Models:
Inoperative airflow switch
• Clean lint compartment after every eight hour shift.
• Check back draft damper for foreign objects, lint
accumulation, or other causes that may prevent damper
from opening.
• Check ductwork for lint build-up. Refer to Installation
Manual (supplied with tumbler) to ensure that ductwork
and make-up air openings are sized properly.
• 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.
Gas and Electric Models:
Airflow switch out of adjustment.
• Refer to Adjustment Section for airflow switch
adjustment.
Lint door panel not closed properly. • Open lint door panel, place lint door panel back on
tumbler (ensuring a tight fit) then latch.
Broken, loose, or incorrect wiring. • Refer to wiring diagram located on back of tumbler or in
literature packet.
W002
14 M411429
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
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.
6. PILOT DOES NOT IGNITE — GAS MODELS (STANDING PILOT IGNITION)
POSSIBLE CAUSE TO CORRECT
Gas shut-off valve to tumbler is closed. • Open valve.
Air is present in gas line. • Purge air from gas line.
Incorrect pilot orifice. • 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.
Clogged pilot gas filter. • Replace reset assembly.
Clogged pilot gas tube or pilot orifice. • Clean or replace tube or orifice.
Inoperative thermocouple. • Replace thermocouple.
Inoperative pilot assembly. • Replace pilot assembly.
W002
7. PILOT GOES OUT — GAS MODELS (STANDING PILOT IGNITION)
POSSIBLE CAUSE TO CORRECT
Improper or inadequate exhaust system. • Refer to Installation Manual (supplied with tumbler) for
exhaust system requirements.
Clogged lint screen. • Remove and clean lint screen.
Improperly adjusted burner flame. • Close air shutter slightly — A harsh roaring flame will
draw pilot flame out.
Carbon accumulation on heated end of pilot
• Wipe carbon off end of thermocouple.
thermocouple.
Incorrect pilot orifice. • 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.
Inoperative gas valve reset assembly or
thermocouple.
• Check and replace reset assembly or thermocouple if
necessary.
M411429 15
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
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.
8. IGNITER DOES NOT SHUT OFF AFTER GAS IGNITION — GAS BURNER (AUTOMATIC PILOT
IGNITION)
POSSIBLE CAUSE TO CORRECT
Tumbler not properly equipped for type of gas
being used.
• Tumbler is equipped for type of gas specified on serial
plate. If tumbler is equipped for gas different from that
specified on serial plate, obtain the necessary components
to correct the problem.
Insufficient gas supply. • Open partially closed gas shut-off valve, or correct low
gas pressure.
Improperly adjusted burner flame. • Refer to Adjustment Section for recommended burner
flame adjustment.
Pilot and electrode assembly incorrectly installed. • Check assembly for correct alignment.
Inoperative igniter control. • Test igniter control and replace if inoperative.
Incorrect wiring. • Refer to wiring diagram located on back of tumbler or in
literature packet.
W002
9. IGNITER DOES NOT GLOW (GAS SUPPLY SUFFICIENT) — GAS MODELS (GLOW-BAR
IGNITION)
POSSIBLE CAUSE TO CORRECT
Sensor failed with contacts open. • Replace sensor.
Igniter is broken or open. • Replace glow bar igniter.
No circuit for burner operation. • Tumbler is not calling for heat, check the heat circuit to
the ignition system.
16 M411429
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
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.
10. IGNITER GLOWS, SENSOR OPENS BUT NO IGNITION — GAS MODELS
(Johnson Controls System)
POSSIBLE CAUSE TO CORRECT
Insufficient gas supply. • Check gas supply and pressure.
Gas flow but no ignition. • 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 – 1/4 inch gap between
bottom of igniter and top of main burner.
No gas flow through gas valve. • 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.
W002
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.
11. IGNITER GLOWS, SENSOR OPENS BUT NO IGNITION — GAS MODELS
(White Rodgers Glow-bar Ignition)
POSSIBLE CAUSE TO CORRECT
Insufficient gas supply. • Is manual shut-off valve in full open position? Check gas
pressure.
Gas flow but no ignition. • Gap between igniter and burner must be 1/8 to 1/4 inch.
No gas flow through gas valve. • 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 stay open,
replace main coil.
• If no voltage is present, replace diode logic board.
M411429 17
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
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.
12. BURNER IGNITES AND GOES OUT REPEATEDLY — GAS MODELS
(Glow-Bar Ignition)
POSSIBLE CAUSE TO CORRECT
Burner heat not holding sensor contacts open. • Replace sensor.
Insufficient gas pressure. • Check gas supply and pressure. A low flame will not
maintain radiation to sensor.
Burner ports plugged or dirty. • Check burner tubes for build-up.
Improper or inadequate exhaust system or make-up
air.
Cycles on high limit thermostat. • Refer to Paragraph 14.
Improper orifices. • Tumbler is equipped for type of gas specified on serial
• Refer to Installation Manual (supplied with tumbler) for
exhaust and make-up air requirements.
plate. If orifices are different from that specified on serial
plate, obtain and install proper orifices.
W002
13. HEATING ELEMENT OR BURNER SHUTS-OFF PREMATURELY
POSSIBLE CAUSE TO CORRECT
Improper or inadequate exhaust and/or make-up air
system.
Gas Models:
Insufficient gas supply.
Gas Models:
Tumbler not properly equipped for type of gas
used.
Gas Models:
• Refer to Installation Manual (supplied with tumbler) for
exhaust and make-up air requirements.
• Open partially closed gas shut-off valve, or correct low
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 proper orifices.
• Refer to Adjustment Section for burner flame adjustment.
Improperly adjusted burner flame.
Gas Models: (Glow-Bar Ignition)
• Replace sensor.
Sensor contact closing.
Cycling off on high limit thermostat. • Refer to Paragraph 14.
Broken, loose or incorrect wiring. • Refer to wiring diagram located on back of tumbler or in
literature packet.
18 M411429
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
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.
14. HEATING ELEMENT OR BURNER REPEATEDLY CYCLES OFF ON HIGH LIMIT
THERMOSTAT
POSSIBLE CAUSE TO CORRECT
External exhaust system is longer than
recommended or inadequate make-up air.
• Refer to Installation Manual (supplied with tumbler) for
exhaust and make-up air requirements.
Clogged lint screen. • Remove screen and clean. Lint screen and compartment
should be cleaned after every eight hour shift.
Lint in tumbler ducts. • Clean tumbler ducts.
Lint in external exhaust system. • Disassemble exhaust system and clean.
High limit thermostat cycling at too low a
• Replace thermostat.
temperature.
Lint door panel not closed properly. • Open lint door panel — place lint door panel back on
tumbler (ensuring a tight fit) then latch.
W002
15. HEATING ELEMENT OR BURNER DOES NOT SHUT-OFF
POSSIBLE CAUSE TO CORRECT
Gas Models:
• Replace gas valve.
Impurities on gas valve seat, preventing valve
from closing.
Inoperative drying timer, relay or contactor. • Replace timer, relay or contactor.
Incorrect wiring. • Refer to wiring diagram located on back of tumbler or in
literature packet.
16. CLOTHES DO NOT DRY
POSSIBLE CAUSE TO CORRECT
Heat source inoperative. • Refer to Paragraph 5.
Too much water in articles being dried. • Remove excess water.
Clothes load too large. • Remove part of load.
Improper or inadequate exhaust system. • Refer to Installation Manual (supplied with tumbler) for
exhaust requirements.
Heat source shuts-off prematurely. • Refer to Paragraph 13.
Drying timer improperly set. • Set selector for higher setting.
Incorrect voltage. • Refer to Installation Manual (supplied with tumbler) for
electrical requirements.
Inadequate make-up air. • Refer to Installation Manual (supplied with tumbler) for
make-up air requirements.
M411429 19
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
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.
17. TUMBLER OVERHEATING
POSSIBLE CAUSE TO CORRECT
Gas Models:
• Replace orifices.
Incorrect main burner orifices.
Gas Models:
• Gas pressure must be as specified on serial plate.
Gas pressure too high.
Inadequate make-up air. • Refer to Installation Manual (supplied with tumbler) for
make-up air requirements.
Lint accumulation. • Remove lint.
Restricted or inadequate exhaust system. • Remove obstruction or lint build-up from exhaust
ductwork. Refer to the Installation Manual (supplied
with tumbler) for exhaust system requirements.
Inoperative thermostat. • Replace thermostat.
W002
18. BURNERS NOT BURNING PROPERLY — GAS MODELS
POSSIBLE CAUSE TO CORRECT
Burner air shutters incorrectly adjusted. • Refer to Adjustment Section for proper flame adjustment.
Dirt in burners. • Disassemble burners and blow out the dirt.
Gas pressure too high. • Check serial plate on back of the tumbler for correct gas
pressure.
Incorrect orifices. • Tumbler is equipped for type of gas specified on serial
plate. If orifices are different from that specified on serial
plate, obtain and install proper orifices.
Restricted or blocked exhaust duct. • Disassemble and clean exhaust system.
Airflow switch not functioning properly. • Check adjustment and replace airflow switch if necessary.
19. CYLINDER DOOR OPENS DURING OPERATION
POSSIBLE CAUSE TO CORRECT
Door strike improperly adjusted. • Refer to Adjustment Section for door strike adjustment.
Tumbler improperly leveled. • Refer to Adjustment Section for leveling leg adjustment.
20 M411429
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
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.
20. TUMBLER RUNS BUT NO STEAM TO COILS — STEAM MODELS
POSSIBLE CAUSE TO CORRECT
Valves closed. • Check all valves in supply and return lines, make sure
they are open.
Blocked steam trap. • Remove trap and clean. Replace if inoperative.
Inoperative solenoid valve. • Check operation of solenoid valve.
Incorrect installation of check valve. • Check for inlet and outlet markings on check valve, and
invert if necessary.
Clogged strainer. • Remove strainer and clean.
Inoperative timer or thermostat • Test timer or thermostat. Replace if inoperative.
W002
21. WATER IN STEAM LINE — STEAM MODELS
POSSIBLE CAUSE TO CORRECT
Incorrect installation of steam piping. • Refer to Installation Manual (supplied with tumbler) for
steam requirements.
Trap functioning improperly. • Check trap for size and capacity. If trap is dirty or sluggish
clean thoroughly or replace. Check return line for high
back pressure.
M411429 21
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
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.
22. TUMBLER WILL NOT START, TIME ON DRYING TIMER, DOOR CLOSED
MANUAL TIMER MODELS
W002
CHECK FOR
LINE VOLTAGE
INTO DOOR SWITCH
NO
CHECK
ELECTRICAL SERVICE
TO TUMBLER
(Fuses/Circuit Breaker)
CHECK FOR
LINE VOLTAGE ON
TERMINAL 1 OF
CONTROL RELAY
NO
CHECK FOR
LINE VOLTAGE
OUT OF
DOOR SWITCH
NO NO
HAS SWITCH ROD
MECHANICALLY
ACTUATED
DOOR SWITCH?
NO
ADJUST
DOOR SWITCH
ROD
YES YES YES
CHECK FOR
LINE VOLTAGE INTO
PUSH-TO-START
SWITCH
NO NO
YES
YES
REPLACE
DOOR
SWITCH
CHECK FOR
LINE VOLTAGE AT
TERMINAL 3 OF
CONTROL RELAY
CHECK FOR
BROKEN
WIRE
OR POOR
CONNECTION
AT
HARNESS
PLUG
PRESS
PUSH-TO-START
SWITCH. CHECK FOR
LINE VOLTAGE OUT
OF PUSH-TO-START
SWITCH
YESYES
CHECK FOR
LINE VOLTAGE ACROSS
COIL TERMINALS
OF CONTROL RELAY
NO
CHECK FOR
LINE VOLTAGE ON
TERMINAL B
OF DRYING TIMER
NO
REPLACE
TIMER
CHECK FOR
LINE VOLTAGE
TO MO T O R
NO
YES
REPLACE
MOTOR
YES
REPLACE
RELAY
22 M411429
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
CHECK FOR
BROKEN WIRE
FROM CONTROL
RELAY TERMINAL 1
REPLACE
PUSH-TO-START
SWITCH
CHECK FOR
BROKEN WIRE
OR POOR
CONNECTION
AT HARNESS PLUG
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.
23. MOTOR RUNS, TIME ON DRYING TIMER BUT NO HEAT
W002
POWER OUT OF
MAIN CONTROL
THERMOSTAT
YES
CHECK THE
IGNITION
CIRCUIT
CHECK FOR
BROKEN OR
LOOSE WIRE AT
HARNESS PLUG
YES NO NO NO NO
REPAIR
WIRE
NO
NO YES YES YES YES
POWER INTO
MAIN CONTROL
THERMOSTAT
YES
REPLACE
MAIN CONTROL
THERMOSTAT
POWER ON
RED WIRE
FROM MOTOR
REPLACE
MOTOR
NO
BROKEN WIRE
POWER ON
TERMINAL 6 OF
CONTROL RELAY
LOOSE OR
BROKEN WIRE TO
MAIN CONTROL
THERMOSTAT
POWER INTO
AIRFLOW
SWITCH
CHECK FOR
LOOSE OR
FROM MOTOR
NO
YES YE S
POWER OUT OF
AIRFLOW
SWITCH
AIRFLOW
SWITCH
CLOSED
POWER ON
TERMINAL 4 OF
CONTROL RELAY
POWER ACROSS
COIL TERMINALS OF
CONTROL RELAY
YES
REPLACE
CONTROL RELAY
NO
POWER INTO
CABINET
HIGH LIMIT
THERMOSTAT
CHECK FOR
BROKEN WIRE
FROM
AIRFLOW SWITCH
NO
ADJUST
AIRFLOW
SWITCH
POWER OUT OF
CABINET
HIGH LIMIT
THERMOSTAT
NO NO NO
REPLACE
THERMOSTAT
M411429 23
POWER INTO
BURNER
HIGH LIMIT
THERMOSTAT
CHECK FOR
BROKEN WIRE
FROM CABINET
HIGH LIMIT
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
YES YESYES
POWER OUT OF
BURNER
HIGH LIMIT
THERMOSTAT
REPLACE
BURNER
HIGH LIMIT
THERMOSTAT
YES
REPLACE
AIRFLOW
SWITCH
CHECK FOR LOOSE
OR BURNED
CONNECTION
AT HARNESS PLUG
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.
24. NO SPARK TO PILOT BURNER
(Electronic Pilot Ignition Models Only)
SHIFT LEFT
BURNER FURTHER
TO LEFT
YES
W002
24 VOLTS BETWEEN
TERMINAL 2 AND
GROUND ON
ELECTRONIC
PACKAGE
NO
CHECK TUMBLER
HEAT CIRCUIT
NO
CERAMIC INSULATOR
SECURELY BONDED
TO PILOT BURNER
ASSEMBLY
(Cannot Swivel)
YES
NO
HIGH TENSION
CABLE SECURELY
ATTACHED TO
IGNITOR POST
NO
CORRECT
REPLACE PILOT
AND ELECTRODE
ASSEMBLY
YES
ARCING TO LEFT
BURNER
NO
CRACKS IN
CERAMIC INSULATOR
ENCASING IGNITOR
PROBE
NO
YES
REPLACE
PILOT AND
ELECTRODE
ASSEMBLY
YES
S
E
7/64 INCH GAP
BETWEEN
ELECTRODE AND
LEFT DIVERTER OF
PILOT BURNER
24 M411429
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Y
N
O
REPLACE
ELECTRONIC
PACKAGE
REPLACE PILOT
AND ELECTRODE
ASSEMBLY
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.
25. SPARK TO PILOT BURNER — NO PILOT FLAME
(Electronic Pilot Ignition Models Only)
W002
24 VOLTS BETWEEN
TERMINAL 1 AND
GROUND ON
ELECTRONIC
PACKAGE
NO
REPLACE
ELECTRONIC
PACKAGE
YES
YES
GAS PRESENT AT
PILOT BURNER
(Disconnect white wire
from Terminal 3 and
light manually)
NO
REMOVE BLACK WIRE
FROM TERMINAL 1.
MOMENTARILY TOUCH TO
TERMINAL 2; IS “CLICK”
HEARD?
NO
REPLACE RIGHT COIL
(PILOT OPERATOR)
YES
YES
YES
YES
M411429 25
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
REFER TO
“NO SPARK TO
PILOT BURNER”
NO
PILOT FILTER,
TUBE OR
ORIFICE
OBSTRUCTED
YES
CLEAR
OBSTRUCTION
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.
26. SPARK TO PILOT BURNER — PILOT LIGHTS — NO MAIN BURNER
(Electronic Pilot Ignition Models Only)
24 VOLTS BETWEEN
TERMINAL 3 AND
GROUND ON
ELECTRONIC
PACKAGE
NO
YES
REPLACE LEFT COIL
(Main Operator)
W002
WIRE BETWEEN
SENSOR AND
TERMINAL 4 OF
ELECTRONIC
PACKAGE
CONNECTED
SECURELY
NO
CORRECT
YES
YES
SENSOR SECURELY
SEATED IN
PILOT BURNER
NO
CORRECT
REPLACE
SENSOR
YES
CRACK IN
SENSOR
CERAMIC
INSULATOR
NO
YES
CHECK GAS
PRESSURE
NO
YES
26 M411429
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
PILOT FILTER,
TUBE OR
ORIFICE
OBSTRUCTED
YES
CLEAR PILOT ORIFICE
OR USE LARGER
PILOT ORIFICE
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.
27. IGNITER DOES NOT GLOW
(Johnson Controls Glow-Bar System)
W002
120 VOLTS PRESENT
BETWEEN BLACK
WIRE AND GROUND
ON MAIN
THERMOSTAT?
NO
CHECK
HEAT CIRCUIT
YES
120 VOLTS PRESENT
BETWEEN RED AND
WHITE WIRES OF
IGNITER BRACKET?
NO
REPLACE
IGNITER
YES
28. IGNITER GLOWS CONSTANTLY
(Johnson Controls Glow-Bar System)
REPLACE
SENSOR
29. IGNITER GLOWS, CYCLES OFF BUT BURNER DOES NOT IGNITE
(Johnson Controls Glow-Bar System)
120 VOLTS PRESENT
ACROSS THE TWO
WIRES OF THE
PRIMARY COIL?
CAN YOU FEEL OR
YES YES YES
HEAR THE PRIMARY
COIL OPEN?
120 VOLTS PRESENT
ACROSS THE TWO
WIRES TO THE
SECONDARY COIL?
120 VOLTS PRESENT
BETWEEN EACH OF THE
PURPLE WIRES OF
SENSOR AND GROUND?
NO
REPLACE
SENSOR
REPLACE
SECONDARY COIL
NO
CHECK FOR A
BROKEN WIRE
BETWEEN THE
TERMINAL BLOCK
AND PRIMARY COIL.
M411429 27
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
PRIMARY COIL.
NO
REPLACE
NO
120 VOLTS PRESENT
ON TERMINALS A
AND 7 OF IGNITION
RELAY?
NO
REPLACE
RELAY
YES
GAP BETWEEN
IGNITER AND BURNER
1/8 – 1/4 INCH?
ADJUST
IGNITER GAP TO
1/8 – 1/4 INCH
NO
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.
30. IGNITER DOES NOT GLOW
(White Rodgers Glow-Bar System)
W002
80 - 120 VOLTS
PRESENT BETWEEN
BLACK WIRE AND
GROUND ON MAIN
THERMOSTAT?
NO
CHECK
HEAT CIRCUIT
YES
80 - 120 VOLTS
PRESENT BETWEEN
RED AND WHITE
WIRES OF IGNITER
BRACKET?
YES
REPLACE
IGNITER
NO
31. IGNITER GLOWS CONSTANTLY
(White Rodgers Glow-Bar System)
REPLACE
SENSOR
32. IGNITER GLOWS, CYCLES OFF BUT BURNER DOES NOT IGNITE
(White Rodgers Glow-Bar System)
80 - 120 VOLTS
PRESENT BETWEEN
EACH OF THE PURPLE
WIRES OF SENSOR AND
GROUND?
NO
REPLACE
DIODE LOGIC
BOARD
80 - 120 VOLTS
PRESENT ACROSS
THE RED AND WHITE
WIRES OF THE
REDUNDANT COIL?
NO
REPLACE DIODE
LOGIC BOARD
YES YES YES
28 M411429
CAN YOU
HEAR THE
REDUNDANT
COIL
OPEN?
NO
REPLACE
COMPLETE
GAS VALVE
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
40 - 60 VOLTS
PRESENT ACROSS
THE PURPLE WIRES
TO THE
MAIN COIL?
NO
REPLACE DIODE
LOGIC BOARD
CAN YOU
HEAR THE
MAIN COIL
CLICK
OPEN?
NO
REPLACE
MAIN COIL
YES
GAP BETWEEN
IGNITER
AND BURNER
1/8 – 1/4 INCH?
NO
ADJUST
IGNITER GAP TO
1/8 – 1/4 INCH
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.
33. IGNITER SPARKS — NO MAIN BURNER IGNITION
(Instant Electronic Ignition)
W002
IGNITER
SPARKING
YES
GREEN WIRE
FROM
IEI CONTROL
CONNECTED TO
GROUND
TERMINAL
YES
GAS SHUT-OFF
VALVE
TURNED ON?
NO
IEI CONTROL IN
SAFETY LOCKOUT
RESET BY OPENING
AND CLOSING DOOR
OPEN AND
CLOSE DOOR
NO
NO OPEN GAS
NO
YES
CONNECT
GREEN WIRE TO
GROUND TERMINAL
SHUT-OFF VALVE
RESISTANCE OF
HIGH VOLTAGE LEAD
GREATER THAN 25,0000
OHMS OR LESS THAN
5,000 OHMS
YES YES
REPLACE
HIGH VOLTAGE
LEAD
NO
IGNITER GAP IS
NOT 5/32 INCH
(.397 CM)
OR CERAMIC
CRACKED
RE-GAP OR
REPLACE
IGNITER
NO
REPLACE
IEI
CONTROL
YES
120 VOLTS
PRESENT ON
BLACK WIRE
FROM IEI
CONTROL
YES
CHECK GAS
VALVE COILS
REPLACE
AS REQUIRED
M411429 29
NO
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
REPLACE
IEI
CONTROL
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.
34. CSH OM MODELS: NO HEAT WITH CYCLE SELECTED, UNIT RUNNING AND CALLING FOR
HEAT
120 Volt/60 Hertz/1 Phase and 208-240 Volt/60 Hertz/1 Phase Nonreversing
460-480 Volt/60 Hertz/3 Phase and 208-240 Volt/60 Hertz/3 Phase Reversing and Nonreversing
Step Problem If No, then
1 Is there voltage at H2-13? If yes, continue to next step. Replace micro control.
2 Is there voltage at H2-6? If yes, continue to next step. Correct wiring between H2-6 and H2-13.
3 Is there voltage at H2-5? If yes, continue to next step. Check for proper thermistor operation. Replace micro
control if necessary.
4 Is there voltage to the input of the motor relay? If yes,
continue to next step.
5 Is there voltage to the output of the motor relay? If yes,
continue to next step for 1 phase units, Step 11 for 3 phase
units.
6 1 Phase Only: Is there voltage to terminal 3 of CR1? If
yes, continue to next step.
7 Is there voltage to terminal 5 of CR1? If yes, continue
with Step 13.
8 Is there voltage to terminal 3 of the motor? If yes,
continue to next step.
9 Is there voltage across the coil of CR1? If yes, continue to
next step.
10 Does CR1 operate? If yes, continue to Step 13. Replace CR1.
11 3 Phase Only: Is there voltage to the input of the motor
switch? If yes, continue to next step.
12 Is there voltage to the output of the motor switch? If yes,
continue to next step.
13 Is there voltage across the steam valve coil? If yes,
continue to next step.
14 Unit operational. If unit still doesn’t heat, check steam
supply.
Correct wiring between motor relay and micro control.
Replace motor relay.
Correct wiring between CR1 and motor relay.
Continue with Step 8.
Replace motor.
Correct wiring to CR1.
Correct wiring to motor switch.
Replace motor.
Correct wiring to steam valve coil.
W002
30 M411429
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