How it Works
Alliance Laundry Systems
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CT050L
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Troubleshooting Manual
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Alliance Laundry Systems CU050N, DR55G2-BA050L, DR55G2-BA050N, DR55G2-BT050D, DR55G2-BT050L Troubleshooting Manual

...
Drying Tumblers
50 Pound Capacity 75 Pound Capacity
Starting Serial No. 0904004427
Refer to Page 7 for Model Numbers
Troubleshooting
www.comlaundry.com
TMB795C
Part No. 70422101
October 2009
Table of
Content s
Section 1 – Safety Information .......................................................... 4
Locating an Authorized Service Person ............................................... 6
Safety Warnings and Decals................................................................. 6
Safety Precautions for Servicing Tumblers.......................................... 6
Section 2 – Introduction..................................................................... 7
Model Identification ............................................................................. 7
Serial Plate Location ............................................................................. 9
Customer Service.................................................................................. 9
Wiring Diagram............................................................................... ..... 9
How a Tumbler Works ......................................................................... 10
Theory of Operation of Instant Electronic Ignition.............................. 10
Section 3 – Troubleshooting............................................................... 11
1. Motor Does Not Start............................................................... 12
2. Motor Overload Protector Cycles Repeatedly......................... 13
3. Motor Runs But Cylinder Does Not Turn................................ 14
4. Motor Does Not Stop............................................................... 15
5. Heating Element Does Not Heat or Burner
Does Not Ignite........................................................................ 16
6. Igniter Does Not Shut Off After Gas Ignition –
Gas Burner ............................................................................... 18
7. Heating Element or Burner Shuts Off Prematurely................. 19
8. Heating Element or Burner Repeatedly Cycles
Off On High Limit Thermostat................................................ 20
9. Heating Element or Burner Does Not Shut-Off....................... 21
10. Clothes Do Not Dry ................................................................. 22
11. Tumbler Overheating............................................................... 23
12. Burners Not Burning Properly — Gas Models........................ 24
13. Loading Door Opens During Operation................................... 25
14. Tumbler Runs But No Steam To Coils — Steam Models....... 26
15. Water In Steam Line — Steam Models................................... 27
16. Door Open Light and Display Flash With Door Closed ......... 28
17. Display Shows “SH” and Signals Sounds ............................... 29
18. Display Shows “OP” and Signal Sounds Three Minutes
After Tumbler is Started ......................................................... 30
19. Motor Runs, Time on Drying Timer But No Heat................... 31
20. No Main Burner Flame, Igniter Does Not Spark..................... 33
21. Steam OM Control: No Heat With Cycle Selected,
Unit Running and Calling For Heat......................................... 34
22. OM and RM Control: No Start With Cycle Selected,
Start Button Pressed and Door Closed..................................... 35
23. OM Control: No Display After Selecting One of the
ON/SELECT Keys................................................................... 37
24. Electric OM Control: No Heat With Cycle Selected,
Unit Running and Calling For Heat......................................... 38
25. Gas OM Control: No Heat With Cycle Selected,
Unit Running and Calling For Heat......................................... 40
© Copyright 2009, 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.
70422101 1
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26. OM Control: No Fan Motor Rotation With Cycle
Selected and Start Pressed........................................................ 42
27. OM Reversing Control: No Cylinder Rotation or Reversing
Capabilities............................................................................... 44
Section 4 – Adjustments..................................................................... 46
28. Main Gas Burner Air Inlet Shutters (Gas Models).................. 46
29. Airflow Switch (Gas and Electric Models).............................. 47
30. Loading Door Strike................................................................. 48
31. Drive Belt Tension................................................................... 48
32. Cylinder Clearance................................................................... 51
Section 5 – Micro Display Control (MDC) Troubleshooting .......... 52
33. Coins Ignored When Entered................................................... 52
34. Control Has No Display........................................................... 53
35. Door Open Indicator ................................................................ 55
36. Motor Will Not Start/Run........................................................ 57
37. Unit Will Not Heat – Gas......................................................... 60
38. Unit Will Not Heat – Steam..................................................... 63
39. Unit Will Not Heat – Electric .................................................. 66
40. Error Codes.............................................................................. 69
Section 6 – NetMaster Troubleshooting – KT075 Models Only..... 70
41. No Infrared Communication.................................................... 71
42. Coins Ignored When Entered................................................... 72
43. No Display ............................................................................... 73
44. “Door Open” Indicator............................................................. 75
45. No Start/Run ............................................................................ 77
46. Unit Will Not Heat – Gas......................................................... 79
47. Unit Will Not Heat – Steam..................................................... 82
48. Unit Will Not Heat – Electric .................................................. 84
49. CE Models No Display............................................................ 87
50. CE Models “Door Open” Indicator.......................................... 89
51. CE Models No Start/Run ......................................................... 91
52. CE Models Will Not Heat – Gas.............................................. 93
53. CE Models Will Not Heat – Steam.......................................... 96
54. CE Models Will Not Heat – Electric ....................................... 98
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Section 8 – On Premise Micro Control (OM) Troubleshooting..... 101
55. Control Has No Display........................................................... 102
56. Door Open Indicator ................................................................ 104
57. Motor Will Not Start/Run........................................................ 106
58. Unit Will Not Heat – Gas......................................................... 109
59. Unit Will Not Heat – Steam..................................................... 112
60. Unit Will Not Heat – Electric .................................................. 114
61. Error Codes.............................................................................. 117
Section 9 – Hybrid Timer Control Troubleshooting....................... 118
62. Coins Ignored When Entered................................................... 118
63. Control Has No Display – QT and RQ
Control Suffixes....................................................................... 119
64. Display Flashes “dr” With Door Closed – QT and RQ
Control Suffixes....................................................................... 121
65. Vend Satisfied, No In Use LED – SD and SX
Control Suffixes....................................................................... 124
66. In Use LED Lit, No Motor Run – SD and SX
Control Suffixes....................................................................... 127
67. Motor Will Not Start/Run – SD and SX Control Suffixes....... 129
68. Motor Will Not Start/Run – QT and RQ Control Suffixes...... 131
69. Unit Will Not Heat – Gas – SD and SX Control Suffixes....... 133
70. Unit Will Not Heat – Gas – QT and RQ Control Suffixes ...... 136
71. Unit Will Not Heat – Electric – QT and RQ
Control Suffixes....................................................................... 139
72. Error Codes.............................................................................. 142
Section 10 – Quantum Control Troubleshooting............................. 143
73. No Infrared Communication.................................................... 144
74. Coins Ignored When Entered................................................... 145
75. No Display ............................................................................... 146
76. “Door Open” Indicator............................................................. 148
77. No Start/Run ............................................................................ 150
78. Unit Will Not Heat – Gas......................................................... 153
79. Unit Will Not Heat – Steam..................................................... 156
80. Unit Will Not Heat – Electric .................................................. 158
81. CE Models No Display............................................................ 162
82. CE Models “Door Open” Indicator.......................................... 164
83. CE Models No Start/Run ......................................................... 166
84. CE Models Will Not Heat – Gas/Steam................................... 169
85. CE Models Will Not Heat – Electric ....................................... 172
70422101 3
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Section 1
Danger indicates an imminently hazardous situation that, if not avoided, will cause severe personal injury or death.
DANGER
Warning indicates a hazardous situation that, if not avoided, could cause severe personal injury or death.
WARNING
Caution indicates a hazardous situation that, if not avoided, may cause minor or moderate personal injury or property damage.
CAUTION
• Failure to install, maintain and/or operate this product according to the manufacturer’s instructions may result in conditions which can produce serious injury, death and/or property damage.
• Do not repair or replace any part of the product or attempt any servicing unless specifically recommended or published in this Service Manual and unless you understand and have the skills to carry out the servicing.
• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the product is properly grounded and to reduce the risk of fire, electric shock, serious injury or death.
W006R2
WARNING
Safety Information
Throughout this manual and on machine decals, you will find precautionary statements (“CAUTION”, “WARNING”, and “DANGER”) followed by specific instructions. These precautions are intended for the personal safety of the operator, user, servicer, and those maintaining the machine.
In the interest of safety, some general precautions relating to the operation of this machine follow.
Additional 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.
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Safety Information
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect electric power to the tumbler before servicing.
• Never start the tumbler with any guards/ panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the tumbler is properly grounded.
W240
WARNING
Repairs that are made to your products by unqualified persons can result in hazards due to improper assembly or adjustments subjecting you, or the inexperienced person making such repairs, to the risk of serious injury, electrical shock, or death.
W007
WARNING
If you or an unqualified person perform service on your product, you must assume the responsibility for any personal injury or property damage which may result. The manufacturer will not be responsible for any injury or property damage arising from improper service and/or service procedures.
W008
CAUTION
IMPORTANT INFORMATION: During the lifetime of a 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.
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.
70422101 5
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Safety Information
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.
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.
Safety Precautions for Servicing Tumblers
Prior to servicing tumbler:
Disconnect electrical service and “lockout” to
prevent unintentional connection.
Shut off supply gas valve. Allow machine to cool prior to servicing.
After servicing tumbler:
Control/access panels must be reinstalled. Motor/drive/belt guards must be reinstalled. Contactor/junction/accessory box covers must
be reinstalled.
Use a non-corrosive leak detection solution to
check all pipe connections for gas leaks. DO NOT USE AN OPEN FLAME TO CHECK FOR GAS LEAKS!
The loading door switch, lint door switch and
airflow switch must be operating properly.
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Section 2
Introduction
Model Identification
Information in this manual is applicable to these models:
Gas Steam/Thermal Oil Electric
PA050L PA050N PT050L PT050N PU050L PU050N SA050L SA050N ST050D ST050L ST050N SU050L SU050N UA050L UA050N UT050L UT050N UU050L UU050N YT050L YT050N
50
Pound
CA050L CA050N CT050L CT050N CU050L CU050N DR55G2-BA050L DR55G2-BA050N DR55G2-BT050D DR55G2-BT050L DR55G2-BT050N DR55G2-BU050L DR55G2-BU050N GA050L GA050N GT050L GT050N GU050L GU050N HA050L HA050N
HT050D HT050L HT050N HU050L HU050N IPD50G2-IT050L IPD50G2-IT050N KA050L KA050N KT050L KT050N KU050L KU050N LA050L LA050N LT050L LT050N LU050L LU050N
CT050S CT050T CU050S CU050T DR55S2-BT050S DR55S2-BT050T DR55S2-BU050S DR55S2-BU050T GT050S GT050T GU050S GU050T HT050S HT050T HU050S HU050T IPD50S2-IT050S IPD50S2-IT050T KT050S
KT050T KU050S KU050T LT050S LT050T LU050S LU050T PT050S PT050T PU050S PU050T ST050S ST050T SU050S SU050T UT050S UT050T UU050S UU050T YT050S YT050T
CT050E CU050E DR55E2-BT050E DR55E2-BU050E GT050E GU050E HT050E HU050E IPD50E2-IT050E KT050E KU050E LT050E LU050E PT050E PU050E ST050E SU050E UT050E UU050E YT050E
(continued)
NOTE: Control suffixes listed on next page.
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Introduction
CA075L CA075N CT075L CT075N CU075L CU075N DR80G2-BA075L DR80G2-BA075N DR80G2-BT075D DR80G2-BT075L DR80G2-BT075N
75
Pound
DR80G2-BU075L DR80G2-BU075N GA075L GA075N GT075L GT075N GU075L GU075N HA075L HA075N HT075D
Gas Steam/Thermal Oil Electric
HT075L HT075N HU075L HU075N IPD75G2-IT075L IPD75G2-IT075N KA075L KA075N KT075L KT075N KU075L KU075N LA075L LA075N LT075L LT075N LU075L LU075N PA075L PA075N PT075L
PT075N PU075L PU075N SA075L SA075N ST075D ST075L ST075N STF75L STF75N SU075L SU075N UA075L UA075N UT075L UT075N UTF75L UTF75N UU075L UU075N YT075L YT075N
CT075S CT075T CU075S CU075T DR80S2-BT075S DR80S2-BT075T DR80S2-BU075S DR80S2-BU075T GT075S GT075T GU075S GU075T HT075S HT075T HU075S HU075T IPD75S2-IT075S IPD75S2-IT075T KT075S KT075T KU075S
KU075T LT075S LT075T LU075S LU075T PT075S PT075T PU075S PU075T ST075S ST075T SU075S SU075T UT075S UT075T UU075S UU075T YT075S YT075T YU075S YU075T
CT075E CU075E DR80E2-BT075E DR80E2-BU075E GT075E GU075E HT075E HU075E IPD75E2-IT075E KT075E KU075E LT075E LU075E PT075E PU075E ST075E SU075E UB075E UT075E UU075E YT075E YU075E
Includes models with the following control suffixes:
3O - DX4 OPL LC - network adaptable coin R3 - reversing DX4 OPL 3V - DX4 vended LX - network adaptable, 3X - DX4 prep for coin RM - reversing OPL micro
prep for coin BC - basic electronic, coin LY - network adaptable, BL - basic electronic, central pay SD - single drop
prep for card
RD - reversing DMP OPL
RQ - reversing dual digital timer
BX - basic electronic, prep for coin NC - NetMaster coin SX - single drop, prep for coin BY - basic electronic, prep for card NX - NetMaster, prep for coin WC - network ready coin DO - DMP OPL NY - NetMaster, prep for card WX - network ready, prep for coin DV - DMP vended OM - OPL micro WY - network ready, prep for card DX - DMP prep for coin QT - dual digital timer
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Serial Plate Location
10
2
0
4
0
30
50
60
0
10
5
PU
SH TO
ST
AR
T
HE
AT
COOL D
OWN
HIGH
TEMPERATURE
LOW
15
0
Serial
Plate
TMB2235N
When calling or writing about your product, be sure to mention model and serial numbers. Model and serial numbers are found on serial plate on the rear of machine and inside door.
Introduction
Customer Service
If literature or replacement parts are required, contact the source from which the machine was purchased or contact Alliance Laundry Systems at (920) 748-3950 for the name and address of the nearest authorized parts distributor.
For technical assistance, call (920) 748-3121.
Wiring Diagram
The wiring diagram is located inside the junction or contactor box.
The wiring diagram part number is in the lower portion of the electrical data on the serial plate.
70422101 9
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Introduction
TMB2347S
123
How a Tumbler Works
1
2
3
TMB2347S
A tumbler uses heated air to dry loads of laundry.
When the motor is started, the exhaust fan pulls room temperature air in through the air intake at the rear of the tumbler 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 wet load by the tumbling action of the cylinder.
Theory of Operation of Instant Electronic Ignition
IMPORTANT: The Non-CE Marked Instant Electronic Ignition system will attempt to light the gas by sparking for approximately 15 seconds. If gas ignition does not take place within approximately 15 seconds, the Instant Electronic Ignition control will go into safety lockout and the valve will no longer open until Instant Electronic Ignition control is reset. To reset Instant Electronic Ignition control, remove power from control by opening and closing the tumbler door. If condition persists, check that the gas shut-off valve is in “on” position and that the gas service is properly connected.
If condition persists:
1. Check resistance of high tension lead (approximately 1000 ohms/inch), and replace if not within resistance range.
2. Check voltage present at valve.
3. Check that machine is properly grounded.
4. Check the gap between igniter and burner tube (gap should be 1/4-3/8 inch).
5. Check that burner ports are not blocked or plugged under the igniter.
The air then passes through the lint filter, exhaust fan, and is vented to the outdoors.
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Section 3
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
Troubleshooting
IMPORTANT: Refer to appropriate wiring diagram for aid in testing tumbler components.
70422101 11
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Troubleshooting
Motor does
not start
Is electrical
power off or
have any fuses
blown?
Check power
and fuses.
Replace fuses
if necessary.
Is loading door
open or is door
switch
inoperative?
No
Close door or
test switch and
replace if
inoperative.
Is lint door
open or is lint
door switch
inoperative?
Close lint door,
confirm switch
is positioned to
actuate with
door closed.
Is
trunnion shaft
assembly binding in
trunnion housing
bearings?
Replace trunnion
housing bearings.
Is start
circuit
incomplete?
Yes
Yes
Press start switch or
test switch and replace
if inoperative.
Yes
Is idler shaft
binding in idler
housing
bearings?
Replace
bearings.
Yes
Is motor
inoperative?
Have motor tested and
replace if inoperative.
Yes
Non-Metered
Models: Is
timer set
properly?
Turn drying timer clockwise
to desired setting.
Non-Metered
Models: Are the
timer or relay
inoperative?
No
Test timer and relay and
replace if inoperative.
Metered Models:
Are proper coins
inserted in
accumulator?
If motor still does not start, replace motor.
Check that proper
coins are inserted.
Yes
Yes
No
No
No
No
Yes
No
No
Yes
Yes
No
TMB2264S
No
TMB2264S
1. Motor Does Not Start
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2. Motor Overload Protector Cycles Repeatedly
TMB1874S
Motor overload
protector
cycles
repeatedly
Is voltage incorrect?
No
Yes
Troubleshooting
Refer to the
Installation
Manual for
electrical
requirements.
Is clothes
load too
large?
No
Is clothes
cylinder
binding?
No
Is wiring
inadequate?
No
Is make-up
air
inadequate?
Yes
Yes
Yes
Yes
Remove part of
load.
Check cylinder
for binding.
Refer to
Adjustments
Section for
cylinder
adjustment.
Check with an
electrician to
ensure that
wiring is
adequate.
Refer to
Installation
Manual for
make-up air
requirements.
built up?
Is there broken,
loose or
incorrect wiring?
70422101 13
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
No
Has lint
No
Yes
Yes
Clean lint
accumulation
on and around
motor.
Refer to wiring
diagram
located inside
contactor box.
TMB1874S
Troubleshooting
TMB1875S
3. Motor Runs But Cylinder Does Not Turn
Motor runs but
cylinder does
not turn
Is motor
drive
pulley
loose?
No
Is sheave
loose?
No
Is belt
broken
or loose?
No
Is
cylinder
binding?
No
Yes
Yes
Yes
Yes
Confirm key is
in place,
tighten
setscrews.
Confirm key is
in place,
tighten
setscrews and
bushing.
Replace or
adjust belt.
Check cylinder
for binding.
Refer to
Adjustments
Section for
proper cylinder
adjustment.
Does cylinder turn
counterclockwise when
viewed from front of
machine (3 Phase
models only)?
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Yes
Switch power
leads L1 and
L2 to correct
rotation.
TMB1875S
4. Motor Does Not Stop
TMB1876S
Motor does not
stop
Troubleshooting
Is door
switch
inoperative?
No
Non-Metered
Models: Is timer
or relay
inoperative?
No
Metered
Models: Is accumulator inoperative?
Yes
Yes
Yes
Test switch and
replace if
inoperative.
Test timer and
relay and
replace if
inoperative.
Te st
accumulator
and replace if
inoperative.
Is wiring
incorrect?
Is motor relay
or motor
contactor
inoperative?
70422101 15
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No
No
Yes
Yes
Refer to wiring
diagram
located inside
contactor box.
Check
relay/contactor
and replace if
inoperative.
TMB1876S
Troubleshooting
Heating element does not heat or
burner does not
ignite
Is there
improper or
inadequate
exhaust or
make-up air?
Refer to
Installation
Manual for
exhaust and
make-up air
requirements.
Are there
blown fuses
or tripped
circuit
breakers?
Check fuses
or circuit
breakers.
Is drying timer not
selected or
inoperative?
Set drying
timer or
replace if
necessary.
Is "No Heat"
selected on
control?
Select
temperature
option.
Is control
relay
inoperative?
Test relay and
replace if
inoperative.
Is thermistor inoperative?
Test thermistor by
removing harness from
thermistor terminals.
Check resistance across
terminals, should read
approximately 50,000
Ohms at 77°F.
Resistance should
decrease with a
temperature increase.
Replace thermistor if
inoperative.
Electric Models:
Are heating
elements or
contactors
inoperative?
Check heat
contactors
and elements.
Replace if
necessary.
Gas Models:
Is gas supply
insufficient?
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.
Continued on
next page
Gas Models:
Are orifices
incorrect?
Tumbler is equipped
for type of gas
specified
on serial plate at
0-2,000 feet altitude. Refer to Installation
Manual .
Ye s
No
Ye s
No
Ye s
No
Ye s
No
Ye s
No
Ye s
No
Ye s
No
Ye s
No
Ye s
No
TMB2324S-a
TMB2324S-a
5. Heating Element Does Not Heat or Burner Does Not Ignite
16 70422101
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5. Heating Element Does Not Heat or Burner Does Not Ignite (continued)
Clean lint compartment after every eight hour shift.
Continued from
previous page
Gas Models:
Are gas valve coils
inoperative?
Test coils and
replace if
available as a
service part,
otherwise
replace valve.
Gas Models:
Is igniter
inoperative?
Gas Models:
Is igniter control
inoperative?
Test igniter and
replace if
inoperative.
Test igniter
control and
replace if
inoperative.
Is
airflow switch
inoperative?
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 to ensure that ductwork and make-up air openings are sized properly. Check exhaust outlet. If a screen has been installed on the outlet, it may be clogged with lint or frozen over in winter. NEVER install a screen over the exhaust outlet.
Is lint door
panel not
closed
properly?
Open lint door
panel. Place lint
door panel back on
tumbler ensuring a
tight fit.
Is there
broken, loose
or incorrect
wiring?
Refer to wiring
diagram
located inside
contactor box.
Ye s
No
Ye s
No
Ye s
No
Gas and Electric
Models: Is high
limit thermostat
inoperative?
Test thermostat
and replace if
inoperative.
Ye s
No
Yes
No
Ye s
No
Ye s
TMB2324S-b
No
TMB2324S-b
Troubleshooting
70422101 17
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Troubleshooting
Igniter does not
shut off after
gas
ignition - gas
burner
Is tumbler not
properly equipped for
type of gas being
used?
Tumbler is equipped for type of gas specified on
serial plate at 0-2,000
feet altitude. Refer to
Installation Manual.
Is there
insufficient gas
supply?
Open partially
closed gas shut-off
valve or correct low
gas pressure.
Is burner flame
adjusted
improperly?
Refer to
Adjustments
Section for
recommended
burner flame
adjustment.
Is electrode assembly
incorrectly installed?
Check
assembly for
correct
alignment.
Is igniter control
inoperative?
Test igniter control and
replace if
inoperative.
Is wiring
incorrect?
Refer to wiring
diagram located inside contactor box.
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
TMB1878S
TMB1878S
6. Igniter Does Not Shut Off After Gas Ignition — Gas Burner
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7. Heating Element or Burner Shuts Off Prematurely
TMB1879S
Heating
element or
burner shuts off
prematurely
Refer to Is there improper or inadequate exhaust
and/or make-up air?
No
Ye s
Installation
Manual for exhaust
and make-up air
requirements.
Troubleshooting
Gas Models: Is
there insufficient
gas supply?
No
Gas Models: Is tumbler
not properly equipped
for type of gas used?
No
Gas Models: Is
burner flame
improperly adjusted?
No
Ye s
closed gas shut-off
valve or correct low
pressure.
Tumbler is equipped for
Open partially
type of gas specified on
Ye s
serial plate at 0-2,000
feet altitude. Refer to
Installation Manual.
Refer to
Ye s
Adjustments
Section for burner flame adjustment.
Is high limit
thermostat
cycling off?
Is there
broken, loose
or incorrect
wiring?
70422101 19
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
No
Ye s
Ye s
Refer to
Paragraph 8.
Refer to wiring
diagram
located inside contactor box.
TMB1879S
Troubleshooting
Heating element or
burner repeatedly
cycles off on high
limit thermostat
Is external exhaust system longer than recommended or is
there inadequate
make-up air?
Refer to
Installation
Manual for
exhaust and
make-up air
requirements.
Is lint
screen
clogged?
Remove screen
and clean. Lint
screen and
compartment
should be cleaned
after every eight
hour shift.
Is there lint
in tumbler
ducts?
Clean tumbler
ducts.
Is there lint
in external
exhaust
system?
Disassemble
exhaust
system and
clean.
Is high limit
thermostat
cycling at too
low a
temperature?
Replace
thermostat.
Is lint door
panel not
closed
properly?
Open lint door panel, place lint door panel back
on tumbler
ensuring a tight fit.
Is backdraft damper not
operating?
Check for
foreign
objects, lint
accumulation
or other
possible
obstructions.
TMB1880S
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
TMB1880S
8. Heating Element or Burner Repeatedly Cycles Off On High Limit Thermostat
20 70422101
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9. Heating Element or Burner Does Not Shut-Off
TMB1881S
Heating element or
burner does not
shut-off
Gas Models: Are
there impurities on
gas valve seat,
preventing valve
from closing?
Yes
Troubleshooting
Replace gas
valve.
No
Is drying
timer, relay or
contactor
inoperative?
No
Is wiring
incorrect?
Yes
Yes
Replace timer,
relay or
contactor.
Refer to wiring
diagram
located inside
contactor box.
70422101 21
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
TMB1881S
Troubleshooting
TMB1882S
10.Clothes Do Not Dry
Clothes do
not dry
Is heat source
inoperative?
No
Is there too
much water in
articles being
dried?
No
Is clothes
load too
large?
Ye s
Paragraph 5.
Ye s
excess water.
Ye s
Remove part of
Refer to
Remove
load.
Does heat
source shut-
off
prematurely?
No
Is drying
timer
improperly
set?
No
Is voltage incorrect?
Ye s
Ye s
Ye s
Refer to
Paragraph 7.
Set selector for
higher setting.
Refer to
Installation
Manual for
electrical
requirements.
No
Is exhaust
system
improper or
inadequate?
Ye s
requirements.
Installation
Manual for
No
22 70422101
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Refer to
exhaust
No
Is make-up
air
inadequate?
Ye s
Refer to
Installation
Manual for
make-up air
requirements.
TMB1882S
11.Tumbler Overheating
Tumbler
overheating
Gas Models:
Are main
burner orifices
incorrect?
Replace orifices.
Refer to the
Installation
Manual for burner
orifice
requirements.
Gas Models:
Is gas
pressure too
high?
Gas pressure
must be as
specified on
serial plate.
Is make-up air
inadequate?
Refer to
Installation
Manual for
make-up air
requirements.
Is there lint
accumulation?
Remove lint.
Is exhaust
system
restricted or
inadequate?
Remove
obstruction or lint
build-up from
exhaust ductwork.
Refer to
Installation
Manual for exhaust
system
requirements.
Is
thermistor
inoperative?
Test thermistor by
removing harness from
thermistor terminals. Check
resistance across
terminals, should read
approximately 50,000
Ohms at 77°F. Resistance
should decrease with a
temperature increase.
Replace thermistor if
inoperative.
Is cabinet
limit or burner
limit
thermostat
inoperative?
Check
thermostats
with Ohm
meter and
replace if open.
TMB1883S
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
TMB1883S
Troubleshooting
70422101 23
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
Burners not
burning
properly - Gas
Models
Are burner air
shutters incorrectly
adjusted?
Refer to
Adjustments
Section for
proper flame
adjustment.
Is there dirt in burners?
Disassemble
burners and blow out the
dirt.
Is gas pressure too
high or too low?
Check serial
plate on back
of the tumbler
for correct gas
pressure.
Are orifices incorrect?
Tumbler is equipped for type of gas specified on
serial plate at 0-2,000
feet altitude. Refer to Installation Manual.
Is make-up air
inadequate?
Refer to
Installation
Manual for proper
make-up air
requirements.
Is exhaust duct
restricted or blocked?
Disassemble and
clean exhaust
system.
TMB1884S
Ye s
No
Ye s
No
Ye s
No
Ye s
No
Ye s
No
Ye s
TMB1884S
12.Burners Not Burning Properly — Gas Models
24 70422101
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
13.Loading Door Opens During Operation
TMB1885S
Loading door
opens during
operation
Is door strike
improperly
adjusted?
Yes
Troubleshooting
Refer to
Adjustments
Section for
door strike
adjustment.
No
Is tumbler
improperly
leveled?
Yes
Refer to
Installation
Manual for
leveling leg
adjustment.
TMB1885S
70422101 25
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
TMB1886S
14.Tumbler Runs But No Steam To Coils — Steam Models
Tumbler runs but
no steam to
coils - Steam
Models
Check all
valves in
supply and
return lines,
make sure they
are open.
Are valves
closed?
No
Yes
Is steam trap
blocked?
No
Is solenoid valve
inoperative?
No
Is check valve
incorrectly installed?
No
Is strainer clogged?
Yes
Yes
Yes
Yes
Remove trap
and clean. Replace if
inoperative.
Check
operation of
solenoid valve.
Check for inlet and
outlet markings on
check valve and
invert if necessary.
Remove strainer
and clean.
No
Is timer or thermistor
inoperative?
26 70422101
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Yes
Test timer. Test thermistor by removing
harness from thermistor terminals. Check
resistance across terminals, should read
approximately 50,000 Ohms at 77°F.
Resistance should decrease with a
temperature increase. Replace either if
inoperative.
TMB1886S
15.Water In Steam Line — Steam Models
TMB1887S
Water in steam
line - Steam
Models
Troubleshooting
Is steam
piping
installed
incorrectly?
No
Is trap
functioning
improperly?
Yes
Yes
Refer to
Installation
Manual for
steam
requirements.
Check trap for size
and capacity. If trap is
dirty or sluggish clean thoroughly or replace.
Check return line for
high back pressure.
70422101 27
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
TMB1887S
Troubleshooting
Door open light and
display flash with door
closed
Is door switch
faulty?
Replace door
switch.
Is lint panel
switch faulty?
Replace lint
panel switch.
Is electrical service
connected incorrectly?
Check service connections to
terminal block in junction box.
For 120 or 240 Volt tumblers,
neutral wire must be
connected to terminal marked
“NEUT”. On single phase
tumblers, hot wire must be
connected to terminal marked
“L1”. A ground wire must be
secured to the ground screw in
the junction box.
TMB2265S
Yes
No
Yes
No
Yes
TMB2265S
16.Door Open Light and Display Flash With Door Closed
28 70422101
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
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