Alliance Laundry Systems DCB30CG User manual

www.comlaundry.com Part No. M413438
September 2001
T025C
Service
Drying Tumblers
30 Pound Capacity (31.5" Wide)
Refer to Page 5 for Model Numbers

M413438 1
© Copyright 2001, 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.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Table of Contents
Section 1 – Safety Information
Locating An Authorized Service Person..................4
Section 2 – Introduction
Model Identification.................................................5
Safety Warnings and Decals....................................6
Safety Precautions for Servicing Tumblers .............6
Customer Service.....................................................7
Serial Plate Location................................................7
How Your 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 Ignite .......................................................13
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 and Sensor Opens But No Ignition
— Gas Models ...............................................17
11. Igniter Glows and Flame 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 Models ...............................................20
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 – Manual Timer Models ...........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
Section 4 – Grounding
Grounding Instructions ..........................................31
Section 5 – Service Procedures
34. Control Panel .................................................33
35. Push-to-Start Switch ......................................35
36. Cooling, Drying or Run Light ........................35
37. Relay (Manual Timers Models) .....................36
38. Resistor ..........................................................36
39. Cooling or Drying Timer ...............................36
40. Cooling or Drying Timer Motor ....................37
41. Coin Meter .....................................................37
42. Coin Meter Timer Motor ...............................38
43. Coin Meter Run or Heat Switch ....................38
44. Accumulator (Coin slide Models) ..................39
45. Accumulator Timer motor .............................40
46. Coin slide .......................................................41
47. Control Thermostat ........................................41
48. Transformer ...................................................43
49. Gas Valve Assembly ......................................44
50. Electronic Package .........................................44
51. Main or Pilot Operator ...................................45
52. Gas Valve .......................................................47
53. Operator .........................................................47
54. Reset Assembly ..............................................47
55. Gas Valve .......................................................48

2M413438
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56. Magnetic Operators ........................................48
57. Gas Valve .......................................................49
58. Diode Logic Board .........................................49
59. Main Coil .......................................................49
60. Igniter and Bracket .........................................50
61. Sensor .............................................................50
62. Igniter .............................................................50
63. Ignition Control ..............................................51
64. Gas Valve .......................................................51
65. Main Coil .......................................................52
66. Burner Tube ...................................................52
67. Contactors and Terminal Block .....................53
68. Heater Element ...............................................54
69. Burner High Limit Thermostat ......................54
70. Cabinet High Limit Thermostat .....................56
71. High Limit Thermostat ..................................57
72. Steam Coils ....................................................57
73. Loading Door Assembly ................................58
74. Door Hinge .....................................................59
75. Door Handle ...................................................59
76. Front Panel .....................................................59
77. Door Switch ...................................................61
78. Door Switch Rod ............................................62
79. Airflow Switch ...............................................63
80. Wire Cover or Wire Channel Cover Plate .....64
81. Drive Guard ...................................................64
82. Drive Belt .......................................................65
83. Drive Chain ....................................................68
84. Idler sprocket .................................................68
85. Sheave, Idler Housing and Idler Shaft ...........68
86. Idler Housing Assembly ................................69
87. Idler Shaft .......................................................69
88. Cylinder Sprocket ..........................................69
89. Cylinder Assembly .........................................70
90. Trunnion Housing Assembly .........................71
91. Trunnion Shaft Assembly ..............................71
92. Motor and Fan Assembly ...............................72
Section 6 –Adjustments
93. Leveling Legs .................................................75
94. Main Gas Burner Air Shutters .......................76
95. Airflow Switch ...............................................77
96. Door Switch ...................................................79
97. Cylinder Door Strike ......................................80
98. Drive V-belt Tension .....................................81
99. Drive Chain Tension ......................................81
100. Cylinder Clearance .......................................84

M413438 3
© 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 (i.e., “CAUTION”,
“WARNING”and “DANGER”) followed by specific instructions. These precautions are intended to protect the
personal safety of the operator, user, servicer and those maintaining the machine.
aDANGER
Danger indicates the presence of a hazard that will cause severe personal injury, death or substantial property
damage if the danger is ignored.
aWARNING
Warning indicates the presence of a hazard that can cause severe personal injury, death or substantial property
damage if the warning is ignored.
aCAUTION
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 (i.e., “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.
In the interest of safety, some general precautions relating to the operation of this machine follow.
• 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
WARNING

4M413438
Section 1 Safety Information
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
IMPORTANT INFORMATION: During the lifetime of your 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 your tumbler and who are equipped with the proper tools
and testing equipment.
NOTE: The WARNING and IMPORTANT instructions appearing in this manual are not meant to cover all
possible conditions and situations that may occur. It must be understood that common sense, caution and
carefulness are factors which CANNOT be built into this tumbler. These factors MUST BE supplied by the
person(s) installing, maintaining or operating the tumbler.
Always contact your dealer, distributor, service agent or the manufacturer on any problems or conditions you do not
understand.
Locating An Authorized Service Person
Alliance Laundry Systems LLC 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 LLC also recommends contacting an
authorized technician and using authorized factory parts.
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
:

M413438 5
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
Section 2
Introduction
Model Identification
Information in this manual is applicable to these tumbler models:
Gas Steam Electric
DCB30CG
DT30CG
DT30CGI
DT30EG
DT30EGI
DTB30CG
JCB30CG
JT30CG
JT30CGI
JT30EG
JT30EGI
JTB30CG
SCB30CG
ST30CG
ST30CGI
ST30EG
ST30EGI
STB30CG
DCB30CSH
DCB30CSL
DT30CSH
DT30CSL
DTB30CSH
DTB30CSL
JCB30CSH
JCB30CSL
JT30CSH
JT30CSL
JTB30CSH
JTB30CSL
SCB30CSH
SCB30CSL
ST30CSH
ST30CSL
STB30CSH
STB30CSL
DCB30CE
DT30CE
DTB30CE
JCB30CE
JT30CE
JTB30CE
SCB30CE
ST30CE
STB30CE

6M413438
Section 2 Introduction
© 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 the 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.
•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!
•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 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.

M413438 7
Section 2 Introduction
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
Customer Service
If literature or replacement parts are required, contact
the source from whom the machine was purchased or
contact Alliance Laundry Systems at [phone]
for the name and address of the nearest authorized
parts distributor.
For technical assistance, call [phone].
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 the Serial Plate as shown.
T419IE3B

8M413438
Section 2 Introduction
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
How Your Tumbler Works
The tumbler uses heat, air and movement to dry loads of laundry.
When the motor is started, the fan pulls room temperature 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 and fan and is vented to the outdoors. Refer to the illustration
above.
NOTE: In Energy Saver Models, some of the exhaust air is recirculated. Refer to illustration on following
page.
Fresh Air
Combustion Air
Mixed Air
Exhaust Air T008CE1A
Standard Models

M413438 9
Section 2 Introduction
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
T007CE1A
Fresh Air
Combustion Air
Mixed Air
Recirculating Air
Exhaust Air
Energy Saver Models

M413438 11
To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the tumbler before servicing.
•Close gas shut-off valve to gas tumbler before servicing.
•Close steam valve to steam tumbler before servicing.
•Never start the tumbler with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumbler is properly grounded.
W002
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
Section 3
Troubleshooting
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. •Replace trunnion housing bearings.
Start circuit not completed. •Press start switch or test switch and replace if inoperative.
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. •Test timer and replace if inoperative.
Non-Metered Models: Inoperative relay. •Test relay and replace if inoperative.
Metered Models: Improper coins inserted in
accumulator. •Check that proper coins are inserted.
Metered Models: Accumulator knob improperly
set after coins were inserted. •Turn knob clockwise to its full limit of travel.
Metered Models: Inoperative run switch
(accumulator). •Test run switch and replace if inoperative.
Broken, loose or incorrect wiring. •Refer to wiring diagram located on back of tumbler or in
literature packet.

12 M413438
Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the tumbler before servicing.
•Close gas shut-off valve to gas tumbler before servicing.
•Close steam valve to steam tumbler before servicing.
•Never start the tumbler with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumbler is properly grounded.
W002
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
2. MOTOR OVERLOAD PROTECTOR CYCLES REPEATEDLY
3. MOTOR RUNS BUT CYLINDER DOES NOT TURN.
4. MOTOR DOES NOT STOP
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
in this manual for cylinder adjustment.
Inadequate wiring. •Check with local power company to ensure that wiring is
adequate.
Inadequate make-up air. •Refer to Installation Manual (supplied with tumbler) for
make-up air requirements.
Lint build-up. •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.
POSSIBLE CAUSE TO CORRECT
Motor drive pulley loose. •Tighten setscrews.
Sheave loose. •Tighten setscrews.
Broken or loose belt. •Replace or adjust belt.
Broken drive sprocket. (Chain drive units) •Replace sprocket and adjust chain.
Broken or loose drive chain. (Chain drive units) •Replace or adjust chain.
Cylinder is binding. •Check cylinder for binding. Refer to Adjustment Section
in this manual for proper cylinder adjustment.
POSSIBLE CAUSE TO CORRECT
Inoperative door switch or switch is out-of-
adjustment. •Test switch and replace if inoperative. Refer to Adjustment Section in this manual for proper switch
adjustment.
Non-Metered Models: Inoperative timer. •Test timer and replace if inoperative.
Non-Metered Models: Inoperative relay. •Test relay and replace if inoperative.
Metered Models: Inoperative accumulator. •Test accumulator and replace if inoperative.
Incorrect wiring. •Refer to wiring diagram located on the back of tumbler or
in literature packet.
Metered Models: Inoperative timer motor. •Test timer motor and replace if inoperative.

M413438 13
Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the tumbler before servicing.
•Close gas shut-off valve to gas tumbler before servicing.
•Close steam valve to steam tumbler before servicing.
•Never start the tumbler with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumbler is properly grounded.
W002
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
5. HEATING ELEMENT DOES NOT HEAT OR BURNER DOES NOT IGNITE
POSSIBLE CAUSE TO CORRECT
Improper or inadequate exhaust system or make-up
air. •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.
Metered Models: Inoperative heat switch. •Check switch “B”on the coin accumulator and replace if
inoperative.
Non-Metered Models: Inoperative relay. •Test relay and replace if inoperative.
Inoperative thermostat. •Test thermostat and replace if inoperative.
Electric Models:
Inoperative heating elements. •Check heat contactors and elements. Replace if necessary.
Gas Models: Insufficient gas supply. •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 gas supplier check main pressure.
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 ignited. •See Installation Manual (supplied with tumbler) or Serial Plate on back of tumbler for lighting and shutting
down standing pilot.
Gas Models: (Standing Pilot Ignition)
Inoperative gas valve reset assembly or
thermocouple.
•Check and replace thermocouple or reset assembly if
necessary.
Gas Models: (Standing Pilot Ignition)
Inoperative burner coil. •Test burner coil and replace if inoperative.
Gas Models: (Automatic Ignition)
Inoperative gas valve coils. •Test coils and replace if inoperative.
Gas Models: (Automatic Ignition)
Inoperative igniter. •Test igniter and replace if inoperative.
Gas Models: (Automatic Ignition)
Inoperative igniter control. •Test igniter control and replace if inoperative.

14 M413438
Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the tumbler before servicing.
•Close gas shut-off valve to gas tumbler before servicing.
•Close steam valve to steam tumbler before servicing.
•Never start the tumbler with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumbler is properly grounded.
W002
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
5. HEATING ELEMENT DOES NOT HEAT OR BURNER DOES NOT IGNITE (continued)
POSSIBLE CAUSE TO CORRECT
Gas Models: (Glow Bar Ignition)
Inoperative gas valve coils. •Test coils and replace if inoperative.
Gas Models: (Glow Bar Ignition)
Inoperative igniter •Test igniter and replace if inoperative.
Gas Models: (Glow Bar Ignition)
Inoperative sensor. •Test sensor and replace if inoperative.
Gas and Electric Models:
Inoperative cabinet or heater high limit thermostat. •Test thermostat and replace if inoperative.
Gas and Electric Models:
Airflow switch out of adjustment. •Refer to Adjustment Section in this manual for airflow switch adjustment.
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.
•Vacuum within the tumbler drops to .09 inches water
column or less for normal operation of tumbler. Vacuum
reading (In water column inches) should range between
.15 and .3. Vacuum reading can be made with a vacuum
4-gauge by removing a sheet metal screw in the front
panel of tumbler and inserting the rubber tube of the
vacuum gauge into screw opening.
Lint door panel not closed properly. •Unlock and open lint door panel, place lint door and panel
back on tumbler (ensuring a tight fit) then lock.
Broken, loose or incorrect wiring. •Refer to wiring diagram located on back of tumbler or in
literature packet.

M413438 15
Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the tumbler before servicing.
•Close gas shut-off valve to gas tumbler before servicing.
•Close steam valve to steam tumbler before servicing.
•Never start the tumbler with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumbler is properly grounded.
W002
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
6. PILOT DOES NOT IGNITE —GAS MODELS (STANDING PILOT IGNITION)
7. PILOT GOES OUT —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 pilot assembly. •Replace pilot assembly.
POSSIBLE CAUSE TO CORRECT
Improper or inadequate exhaust system or make-up
air. •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 (harsh roaring flame will draw
pilot flame out.)
Soot or carbon accumulation on heated end of pilot
thermocouple. •Wipe soot or carbon off end of 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. •Check and replace reset assembly or thermocouple if
necessary.

16 M413438
Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the tumbler before servicing.
•Close gas shut-off valve to gas tumbler before servicing.
•Close steam valve to steam tumbler before servicing.
•Never start the tumbler with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumbler is properly grounded.
W002
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
8. IGNITER DOES NOT SHUT OFF AFTER GAS IGNITION —GAS BURNER (AUTOMATIC PILOT
IGNITION)
9. IGNITER DOES NOT GLOW (GAS SUPPLY SUFFICIENT) —GAS MODELS (GLOW-BAR
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 in this manual 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.
POSSIBLE CAUSE TO CORRECT
No electrical power to leads on gas valve. •Refer to wiring diagram located on back of tumbler or in
literature packet to check for electrical circuit.
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.

M413438 17
Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the tumbler before servicing.
•Close gas shut-off valve to gas tumbler before servicing.
•Close steam valve to steam tumbler before servicing.
•Never start the tumbler with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumbler is properly grounded.
W002
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
10. IGNITER GLOWS AND SENSOR OPENS BUT NO IGNITION —GAS MODELS
(Johnson Controls System)
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 heating 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 the 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 AND FLAME SENSOR OPENS BUT NO IGNITION —GAS MODELS
(White Rodgers Glow-bar Ignition)
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 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
inoperable 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.
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 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 click open,
replace main coil.
•If no voltage is present, replace diode logic board.

18 M413438
Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the tumbler before servicing.
•Close gas shut-off valve to gas tumbler before servicing.
•Close steam valve to steam tumbler before servicing.
•Never start the tumbler with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumbler is properly grounded.
W002
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
12. BURNER IGNITES AND GOES OUT REPEATEDLY —GAS MODELS
(Glow-Bar Ignition)
13. HEATING ELEMENT OR BURNER SHUTS OFF PREMATURELY
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. •Refer to Installation Manual (supplied with tumbler) for exhaust and make-up air requirements.
Inoperative high limit thermostat. •Test thermostat and replace if inoperative.
Improper 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.
POSSIBLE CAUSE TO CORRECT
Improper or inadequate exhaust and/or make-up air
system. •Refer to Installation Manual (supplied with tumbler) for exhaust and make-up air requirements.
Gas Models:
Insufficient gas supply. •Open partially closed gas shut-off valve, or correct low pressure.
Gas Models:
Tumbler not properly equipped for type of gas
used.
•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:
Improperly adjusted burner flame. •Refer to Adjustment Section in this manual for burner flame adjustment.
Gas Models: (Glow-Bar Ignition)
Sensor contact opening prematurely. •Replace sensor.
Cycling off on limit thermostat. •Refer to Paragraph 14.
Broken, loose or incorrect wiring. •Refer to wiring diagram located on back of tumbler or in
literature packet.

M413438 19
Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the tumbler before servicing.
•Close gas shut-off valve to gas tumbler before servicing.
•Close steam valve to steam tumbler before servicing.
•Never start the tumbler with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumbler is properly grounded.
W002
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
14. HEATING ELEMENT OR BURNER REPEATEDLY CYCLES OFF ON HIGH LIMIT
THERMOSTAT
15. HEATING ELEMENT OR BURNER DOES NOT SHUT OFF
16. CLOTHES DO NOT DRY
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. •Disassemble tumbler ducts and clean.
Lint in external exhaust system. •Disassemble exhaust system and clean.
High limit thermostat cycling at too low of a
temperature. •Replace thermostat.
Lint door panel not closed properly. •Unlock and remove lint door panel —place lint door
panel back on tumbler (ensuring a tight fit) then lock or
latch.
POSSIBLE CAUSE TO CORRECT
Gas Models:
Impurities on gas valve seat, preventing valve
from closing.
•Replace gas valve.
Inoperative drying timer or relay. •Replace timer or relay.
Incorrect wiring. •Refer to wiring diagram located on back of tumbler or in
literature packet.
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 or make-up
air. •Refer to Installation Manual (supplied with tumbler) for exhaust and make-up air requirements.
Heat source shuts off prematurely. •Refer to Paragraph 13.
Incorrect voltage. •Refer to Installation Manual (supplied with tumbler) for
electrical requirements.

20 M413438
Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the tumbler before servicing.
•Close gas shut-off valve to gas tumbler before servicing.
•Close steam valve to steam tumbler before servicing.
•Never start the tumbler with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumbler is properly grounded.
W002
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
17. TUMBLER OVERHEATING
18. BURNERS NOT BURNING PROPERLY —GAS MODELS
19. CYLINDER DOOR OPENS DURING OPERATION
POSSIBLE CAUSE TO CORRECT
Gas Models:
Incorrect main burner orifices. •Replace orifices.
Gas Models:
Gas pressure too high. •Adjust gas pressure as specified on Serial Plate.
Lint accumulation. •Remove lint.
Restricted or inadequate exhaust system or make-up
air. •Remove obstruction or lint build-up from exhaust ductwork. Refer to the Installation Manual (supplied
with tumbler) for exhaust system and make-up air
requirements.
Inoperative thermostat. •Replace thermostat.
POSSIBLE CAUSE TO CORRECT
Burner air shutters incorrectly adjusted. •Refer to Adjustment Section in this manual 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.
POSSIBLE CAUSE TO CORRECT
Door strike improperly adjusted. •Refer to Adjustment Section in this manual for door strike
adjustment.
Tumbler improperly leveled. •Refer to Adjustment Section in this manual for leveling
leg adjustment.