How it Works
Alliance Laundry Systems
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KU055L
Troubleshooting Manual
224 pgs12.86 Mb0

Alliance Laundry Systems CT035L, CT035N, CHD35G2, CU035L, CU035N Troubleshooting Manual

...
Tumble Dryers
25 Pound Capacity 30 Pound Capacity 35 Pound Capacity 55 Pound Capacity
Starting Serial No. 0602004144
Refer to Page 7 for Model Numbers
Troubleshooting
www.alliancelaundry.com
T463PE1A
Part No. 70380601R4
January 2013
Table of
Contents
Section 1 – Safety Information .......................................................... 5
Locating an Authorized Service Person ............................................... 7
Safety Warnings and Decals................................................................. 7
Safety Precautions for Servicing Tumble Dryers ................................. 7
Section 2 – Introduction ..................................................................... 9
Model Identification ............................................................................. 9
Serial Plate Location............................................................................. 12
Customer Service.................................................................................. 12
Wiring Diagram.................................................................................... 12
How a Tumble Dryer Works ................................................................ 13
Theory of Operation ............................................................................. 14
Section 3 – Machine Troubleshooting............................................... 17
1. Tumble Dryer Does Not Start .................................................. 18
2. Motor Does Not Start............................................................... 19
3. Motor Overload Protector Cycles Repeatedly ......................... 20
4. Motor Runs But Cylinder Does Not Turn................................ 21
5. Motor Does Not Stop ............................................................... 22
6. No Heat Condition (Non-CE and Non-Australian Models)..... 23
7. Burner Does Not Ignite............................................................ 25
8. Burner Ignites and Goes Out Repeatedly................................. 28
9. Burner Does Not Shut Off ....................................................... 29
10. Clothes Do Not Dry ................................................................. 30
11. Tumble Dryer Overheating ...................................................... 32
12. Burner Not Burning Properly................................................... 33
13. Loading Door Opens During Operation................................... 34
14. Cylinder Continues to Spin with Door Open........................... 35
15. Coin Does Not Fall into Coin Vault or Coin Drop Sensor
Does Not Register that Coin Has Been Entered ...................... 36
16. Cylinder Is “Stained” ............................................................... 39
Section 4 – Fire Supression System Troubleshooting...................... 40
17. Tumble Dryer Does Not Operate and Light Is On................... 41
18. Water Discharge, but No Fire .................................................. 42
19. Tumble Dryer Does Not Operate and Light Is Off .................. 43
20. Tumble Dryer Operates, but Water Does Not Discharge
and Light Is On ........................................................................ 44
Section 5 – Adjustments ..................................................................... 46
21. Loading Door Switch............................................................... 46
22. Loading Door Strike................................................................. 46
23. Aligning Door Strike................................................................ 47
24. Cleaning Coin Drop ................................................................. 47
Section 6 – Micro Display Control (MDC) Troubleshooting.......... 50
Models with BC, BL, BX and BY Control Suffixes
25. Coins Ignored When Entered................................................... 50
26. Control Has No Display........................................................... 51
© Copyright 2013, 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.
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27. Door Open Indicator ................................................................ 53
28. Motor Will Not Start/Run ........................................................ 55
29. Unit Will Not Heat – Gas......................................................... 59
30. Unit Will Not Heat – Steam..................................................... 62
31. Unit Will Not Heat – Electric .................................................. 65
32. Error Codes .............................................................................. 68
Gas and Steam Models
Control Circuit Schematic.................................................................69
Control Circuit Connection...............................................................70
Gas and Steam Models
Control Box Schematic .....................................................................71
Control Box Connection ...................................................................72
Gas and Steam Models
Control Circuit Schematic.................................................................73
Gas and Steam Models
Control Circuit Schematic.................................................................74
Gas and Steam Models
Control Box Schematic .....................................................................75
Control Box Connection ...................................................................76
Electric Models
Control Circuit Schematic.................................................................77
Control Circuit Connection...............................................................78
Electric Models
Control Box Connection ...................................................................79
Control Box Schematic .....................................................................80
Section 7 – On Premise Micro Control Troubleshooting................ 81
Models with OM Control Suffix
33. Control Has No Display........................................................... 82
34. Door Open Indicator ................................................................ 84
35. Motor Will Not Start/Run ........................................................ 87
36. Unit Will Not Heat – Gas......................................................... 90
37. Unit Will Not Heat – Steam..................................................... 93
38. Unit Will Not Heat – Electric .................................................. 96
39. Error Codes .............................................................................. 99
Section 8 – NetMaster Troubleshooting ........................................... 100
Models with NC, NR, NX, NY, ZC, ZR, ZX and ZY
Control Suffixes
40. No Infra-red (IR) Communication ........................................... 100
41. Coins Ignored When Entered................................................... 101
42. Control Has No Display........................................................... 102
43. Door Open Indicator ................................................................ 104
44. Motor Will Not Start/Run ........................................................ 106
45. Unit Will Not Heat – Gas......................................................... 110
46. Unit Will Not Heat – Steam..................................................... 113
Section 9 – Hybrid Timer Control Troubleshooting ....................... 115
Models with QT, SD and SX Control Suffixes
47. Coins Ignored When Entered................................................... 115
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48. Control Has No Display – OPL Models .................................. 116
49. Display Flashes “dr” With Door Closed – OPL Models ......... 119
50. Vend Satisfied, No In Use LED – Coin Models...................... 122
51. In Use LED Lit, No Motor Run – Coin Models ...................... 126
52. Motor Will Not Start/Run – Coin Models ............................... 129
53. Motor Will Not Start/Run – OPL Models................................ 132
54. Unit Will Not Heat – Gas – Coin Models................................ 135
55. Unit Will Not Heat – Gas – OPL Models ................................ 138
56. Unit Will Not Heat – Electric OPL.......................................... 141
57. Error Codes .............................................................................. 145
Section 10 – Electronic Control Troubleshooting............................ 146
Models with KB, KC, KX, KV, KW, KY, LC, LX, LY, WC,
WX and WY Control Suffixes
58. No Infrared Communication .................................................... 147
59. Coins Ignored When Entered................................................... 148
60. No Display ............................................................................... 149
61. “Door Open” Indicator............................................................. 151
62. No Start/Run ............................................................................ 153
63. Unit Will Not Heat – Gas......................................................... 155
64. Unit Will Not Heat – Steam..................................................... 158
65. Unit Will Not Heat – Electric .................................................. 160
66. CE Models No Display ............................................................ 163
67. CE Models “Door Open” Indicator.......................................... 165
68. CE Models No Start/Run ......................................................... 167
69. CE Models Will Not Heat – Gas/Steam................................... 169
70. CE Models Will Not Heat – Electric ....................................... 172
Section 11 – LED OPL and UniLinc Troubleshooting.................... 175
Models with EO, RE, RU and UO Control Suffixes
71. No Fan Motor Rotation ............................................................ 176
72. No Drive Motor Rotation......................................................... 179
73. Stove and Cabinet Limit Errors ............................................... 182
74. No Display ............................................................................... 184
75. Airflow Errors .......................................................................... 186
76. Fan Motor Centrifugal Switch Error........................................ 188
77. Close Door Indication .............................................................. 190
78. Moisture Sensor Error.............................................................. 192
Troubleshooting the Moisture Sensor Circuit....................................... 194
79. Troubleshooting at the Control ................................................ 194
80. Troubleshooting From Control to Slip Ring Assembly........... 196
81. Troubleshooting At Slip Ring Assembly................................. 198
82. Troubleshooting From Slip Ring Assembly to Moisture
Sensing Baffle and Basket ....................................................... 198
83. Troubleshooting from Basket Shaft to Moisture Sensing
Baffle with Machine Basket Removed .................................... 198
84. Troubleshooting at the Moisture Sensing Baffles with
Machine Basket Removed ....................................................... 199
85. Fan Motor Contactor Error ...................................................... 200
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86. Rotation Sensor Error............................................................... 202
87. Shorted or Open Thermistor .................................................... 204
88. Fuses and Transformer Configuration Jumper......................... 206
89. Dip Switch/Harness Index Mismatch ...................................... 207
90. Electronic Control Testing....................................................... 208
91. Diagnostic Testing ................................................................... 216
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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.
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.
In the interest of safety, some general precautions relating to the operation of this machine follow.
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Safety Information
To re d uc e th e r is k o f e l ec tri c s h oc k, fir e, explosion, serious injury or death:
•Disconnect electric power to the tumble dryer before servicing.
•Never start the tumble dryer with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the tumble dryer is properly grounded.
W240R1
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 tumble dryer, it may require service. The information contained in this manual was written and is intended for use by qualified service technicians who are familiar with the safety procedures required in the repair of a tumble dryer, and who are equipped with the proper tools and testing equipment.
NOTE: The WARNING and IMPORTANT instructions appearing in this manual are not meant to cover all possible conditions and situations that may occur. It must be understood that common sense, caution and carefulness are factors which CANNOT be built into this tumble dryer. These factors MUST BE supplied by the person(s) installing, maintaining or operating the tumble dryer.
Always contact your dealer, distributor, service agent or the manufacturer on any problems or conditions you do not understand.
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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 tumble dryer. 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 Tumble D rye rs
Prior to servicing tumble dryer:
• Disconnect electrical service and “lockout” to prevent unintentional connection.
• Shut off supply gas valve.
• Allow machine to cool prior to servicing.
After servicing tumble dryer:
• 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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Safety Information
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Section 2
Introduction
Model Identification
Information in this manual is applicable to these models:
Gas Steam Electric
CHD25G2-CA025L CHD25G2-CA025N CHD25G2-CT025L CHD25G2-CT025N CHD25G2-CU025L CHD25G2-CU025N CK025N DR25G2-BA025L DR25G2-BA025N DR25G2-BK025N
25
Pound
30
Pound
DR25G2-BT025L DR25G2-BT025N DR25G2-BU025L DR25G2-BU025N GA025L GA025N GT025L GT025N GU025L GU025N HA025L HA025N
CHD30G2-CA030L CHD30G2-CA030N CHD30G2-CT030L CHD30G2-CT030N CHD30G2-CU030L CHD30G2-CU030N CK030N DR30G2-BA030L DR30G2-BA030N DR30G2-BK030N DR30G2-BT030D DR30G2-BT030L DR30G2-BT030N DR30G2-BU030L DR30G2-BU030N GA030L GA030N GT030L GT030N GU030L GU030N HA030L HA030N
Models continued on next page.
HT025L HT025N HU025L HU025N IPD25G2 IT025L IT025N KA025L KA025N KT025L KT025N KU025L KU025N LA025L LA025N LT025L LT025N LU025L LU025N PA025L PA025N PT025L
HK030N HT030D HT030L HT030N HU030L HU030N IPD30G2 IT030L IT030N KA030L KA030N KT030L KT030N KU030L KU030N LA030L LA030N LT030L LT030N LU030L LU030N PA030L PA030N
PT025N PU025L PU025N SA025L SA025N SK025N ST025L ST025N SU025L SU025N UA025L UA025N UK025N UT025L UT025N UU025L UU025N YT025L YT025N YU025L YU025N
PT030L PT030N PU030L PU030N SA030L SA030N SK030N ST030D ST030L ST030N SU030L SU030N UA030L UA030N UK030N UT030L UT030N UU030L UU030N YT030L YT030N YU030L YU030N
CHD25S2-CT025S CHD25S2-CU025S DR25S2-BT025S DR25S2-BU025S GT025S GU025S HT025S HU025S IPD25S2 IT025S KT025S KU025S LT025S LU025S PT025S PU025S ST025S SU025S UT025S UU025S YT025S YU025S
CHD30S2-CT030S CHD30S2-CU030S DR30S2-BT030S DR30S2-BU030S GT030S GU030S HT030S HU030S IPD30S2 IT030S KT030S KU030S LT030S LU030S PT030S PU030S ST030S SU030S UT030S UU030S YT030S YU030S
CHD25E2-CT025E CHD25E2-CU025E DR25E2-BT025E DR25E2-BU025E GT025E GU025E HT025E HU025E IPD25E2 IT025E KT025E KU025E LT025E LU025E PT025E PU025E ST025E SU025E UT025E UU025E YT025E YU025E
CHD30E2-CT030E CHD30E2-CU030E DR30E2-BT030E DR30E2-BU030E GT030E GU030E HT030E HU030E IPD30E2 IT030E KT030E KU030E LT030E LU030E PT030E PU030E ST030E SU030E UT030E UU030E YT030E YU030E
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Introduction
35
Pound
55
Pound
AT035L AT035N CHD35G2-CA035L CHD35G2-CA035N CHD35G2-CT035L CHD35G2-CT035N CHD35G2-CU035L CHD35G2-CU035N CK035N DR35G2-BA035L DR35G2-BA035N DR35G2-BK035N DR35G2-BT035L DR35G2-BT035N DR35G2-BU035L DR35G2-BU035N GA035L GA035N GT035L GT035N GU035L GU035N HA035L
CA055L CA055N CK055N CT055L CT055N CU055L CU055N DR55SG2-BA055L DR55SG2-BA055N DR55SG2-BK055N DR55SG2-BT055D DR55SG2-BT055L DR55SG2-BT055N DR55SG2-BU055L DR55SG2-BU055N GA055L GA055N GT055L
HA035N HK035N HT035L HT035N HU035L HU035N IPD35G2 IT035L IT035N KA035L KA035N KT035L KT035N KU035L KU035N LA035L LA035N LT035L LT035N LU035L LU035N PA035L PA035N
GT055N GU055L GU055N HA055L HA055N HK055N HT055D HT055L HT055N HU055L HU055N IPD55G2 IT055L IT055N KA055L KA055N KT055L KT055N
Gas Steam Electric
PT035L PT035N PU035L PU035N SA035L SA035N SK035N ST035L ST035N SU035L SU035N UA035L UA035N UK035N UT035L UT035N UU035L UU035N YT035L YT035N YU035L YU035N
KU055L KU055N SA055L SA055N SK055N ST055D ST055L ST055N SU055L SU055N UA055L UA055N UK055N UT055L UT055N UU055L UU055N
(see next page for suffixes)
AT035S CHD35S2-CT035S CHD35S2-CU035S DR35S2-BT035S DR35S2-BU035S GT035S GU035S HT035S HU035S IPD35S2 IT035S KT035S KU035S LT035S LU035S PT035S PU035S ST035S SU035S UT035S UU035S YT035S YU035S
Not
Applicable
AT035E CHD35E2-CT035E CHD35E2-CU035E DR35E2-BT035E DR35E2-BU035E GT035E GU035E HT035E HU035E IPD35E2 IT035E KT035E KU035E LT035E LU035E PT035E PU035E ST035E SU035E UT035E UU035E YT035E YU035E
CT055E CU055E DR55SE2-BT055E DR55SE2-BU055E GT055E HT055E HU055E IPD55E2 IT055E KT055E ST055E SU055E UT055E UU055E
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Includes models with the following control suffixes:
Introduction
3B – reversing DX4 vended 3O – DX4 OPL 3V – DX4 vended 3W – reversing DX4 prep for coin 3X – DX4 prep for coin BB – reversing basic electronic, coin BC – basic electronic, coin BG – basic electronic, OPL mode BL – basic electronic, central pay BW – reversing basic electronic, prep
for coin BX – basic electronic, prep for coin BY – basic electronic, prep for card BZ – reversing basic electronic, prep
for card DO – DMP OPL DV – DMP vended DX – DMP prep for coin EO – LED OPL KB – reversing single coin KC – single coin
KW – reversing prep for coin KX – prep for coin KY – prep for card KZ – reversing prep for card LB – reversing network adaptable
coin LC – network adaptable coin LW – rev ersin g net work adapt able,
prep for coin LX – network adaptable, prep for
coin LY – network adaptable, prep for
card LZ – reversing network adaptable,
prep for card NC – NetMaster coin NR – NetMaster card NX – NetMaster, prep for coin NY – NetMaster, prep for card OM – OPL micro QT – dual digital timer
R3 – reversing DX4 OPL RE – reversing LED OPL RQ – reversing dual digital timer RU – reversing UniLinc OPL SD – single drop SX – single drop, prep for coin UO – UniLinc OPL WB – reversing network ready coin WC – network ready coin WW –reversing network ready, prep
for coin WX – network ready, prep for coin WY – network ready, prep for card WZ – reversing network ready, prep
for card ZC – NetMaster network coin ZR – NetMaster network card ZX – NetMaster network, prep for
coin ZY – NetMaster network, prep for
card
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Introduction
1
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 as shown.
1 Serial Plate
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 +1 (920) 748-3121.
Wiring Diagram
The wiring diagram is located inside the contactor or junction box.
The wiring diagram part number is located in the lower portion of the electrical data on the serial plate.
TMB2098N
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How a Tumble Dryer Works
1
2
3
T001CE3A
1
2
3
Introduction
A tumble dryer uses heated air to dry loads of laundry.
When the motor is started, the exhaust fan pulls room temperature air in through the air intake at the rear of the tumble dryer and over the heat source (burner flame for gas, heating element for electric, and coil for steam).
The heated air moves into the cylinder, where it is circulated through the wet load by the tumbling action of the cylinder.
The air then passes through the lint filter, exhaust fan, and is vented to the outdoors.
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Introduction
1
2
5
4
3
Theory of Operation
IMPORTANT: The fire suppression system is designed to diminish a laundry fire starting inside a fire suppression system equipped tumble dryer. The fire suppression system is not designed to stop or eliminate high temperature and spontaneous combustion situations. Follow all instructions in the installation manual to ensure the fire suppression system operates properly. Train all operators in the proper preventative maintenance of the fire suppression system.
IMPORTANT: For safety purposes, do not operate tumble dryer if a fire has occurred.
1 Te mp e ra t ur e S e ns o rs 4 Fire Suppression System Control Box 2 Loading Door 5 Water Flow to Machine 3 Load
Figure 1
TMB2257N
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Tempe rature Sen so r
3
4
5
6
7
1
2
Two temp e rature sensors are lo c ated i n the c ylinder area of the tumble dryer to provide temperature readings. Refer to Figure 1 and Figure 2. These temperature sensors will trigger a mode change based on a pre-set temperature trip-point.
Introduction
TMB1999N
1 Opening for Auxiliary Alarm Cable 5 Light 2 Fuse 6 Reset Button 3 Auxiliary Alarm Fast-On Connection 7 Auxiliary Alarm Fast-On Connection 4 Te st Bu t to n
Figure 2
TMB1999N
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Introduction
Power-Up Mode
Sends power to control, begins a status check
of the system. Can send control into Idle Mode
or Lockout Mode.
Idle Mode
Machine is operable while it monitors
temperature sensor readings. Control will enter
Power Disconnect Mode if temperature
trip-point is exceeded.
Power Disconnect Mode
Machine is disabled and controls on front will not
operate, will enter Power Disconnect Mode for one
second, then Water On Mode.
Water On Mode
Machine is disabled and controls on front will not operate. Remain in this mode
for 90 seconds, then enter Lockout Mode. Can enter Lockout Error Mode if both
temperature sensors become open, which occurs when temperature is below
40° F (4° C). Will enter Idle Mode if reset button is pressed. Refer to
Figure 2.
Lockout Mode
Machine is disabled and controls on front will not
operate. Control monitors temperature readings. Enters
Wat er On Mode if temperat ure t ri p-point is exc eed e d.
Will enter Idle Mode if reset button is pressed.
Lockout Error Mode
Machine is disabled and controls on front will not
operate. Water dispenses for four minutes. When the
reset button is pressed, the control enters Idle
Mode.
If temper ature trip-point exceeded
If both temperature sensors become open
Whe n reset button is pressed
If reset button is pressed
Modes of Operation
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Section 3
To re d uc e th e r is k o f e l ec tri c s h oc k, fir e, exp lo s ion , s er i ou s i n ju ry or dea th:
•Disconnect electric power to the tumble dryer before servicing.
•Close gas shut-off valve to gas tumble dryer before servicing.
•Close steam valve to steam tumble dryer before servicing.
•Never start the tumble dryer with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the tumble dryer is properly grounded.
W002R1
WARNING
Machine Troubleshooting
IMPORTANT: Refer to wiring diagram for aid in testing tumble dryer components.
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Machine Troubleshooting
Tumble Dryer
Does Not Start
Is motor
relay
inoperative?
Test relay and
replace if
necessary.
Yes
Is
loading door
open?
No
Close loading
door
completely.
Is drying timer in an off position
(Hybrid Timer
Models)?
Yes
Turn drying
timer on.
Check that
proper amount
of coins are
inserted.
Is the
START button
not properly
activated
(Hybrid Timer
Models)?
Press and
hold
START button
for three
seconds.
Is the
electrical power
off or circuit
breaker or fuse
blown?
Close and
lock lint
panel.
Check fuse
(in junction box)
and replace if
necessary.
Is
there a
blown fuse
on tumble
dryer?
Test coin drop
and replace if
inoperative.
Yes
Is coin drop
inoperative?
Is there an
incorrect
amount of coins
inserted into
coin drop?
No
No
Yes
No
Yes
Check power
supply, or
replace fuses.
No
Is the lint
panel
open?
No
Yes
No
Yes
Yes
TMB2036S
Yes
No
1. Tumble Dryer Does Not Start
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2. Motor Does Not Start
Motor Does
Not Start
Is the
electrical power
off or circuit
breaker fuse
blown?
No
Is the loading door switch or lint
panel switch not closed or switch
inoperative?
Is the
door switch
improperly
adjusted?
No
Check power
supply, or replace
fuses.
Yes
Close door, panel
or test switch and
replace if
inoperative.
Yes
Refer to
Adjustments
Section for door
switch adjustment.
Yes
Is the start
circuit not
complete?
Yes
Press and hold
START button for
three seconds.
Is the motor
inoperative?
Yes
Have motor tested
and replace if
inoperative.
No
Is the
cylinder or
cylinder motor
binding?
No
Refer to wiring
diagram.
Yes
Replace fan or
motor assembly.
Yes
Replace cylinder,
bearing, rollers, or
motor assembly.
Yes
Is the
transformer
inoperative?
Yes
Test and replace
if necessary.
Is the
motor relay
inoperative?
Yes
Test relay and replace
if inoperative.
Is
the fan or fan
motor
binding?
Is there
broken, loose,
or incorrect
wiring?
No
No
No
Is the
airflow switch
inoperative
(Hyrid Timer
Models)?
Yes
Test switch,
replace or adjust
as required.
No
TMB2037S
No
No
Machine Troubleshooting
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Machine Troubleshooting
TMB1904S
Motor Overload
Protector
Cycles
Repeatedly
Is voltage
correct?
Refer to
Installation
Manual for
electrical
requirements.
Yes
Is clothes
load too
large?
No
Remove part of
load.
Yes
Is clothes
cylinder
binding?
Check cylinder
for binding.
Is wiring
adequate?
No
Yes
No
Check with
local power
company to
ensure that
wiring is
adequate.
Yes
Is make-up
air adequate?
Refer to
Installation
Manual for
make-up air
requirements.
No
Yes
Is
there lint
buildup around
tumble dryer or poor
maintenance?
Clean lint
accumulation
on and around
the motors.
No
Yes
Is there
broken, loose
or incorrect
wiring?
Refer to wiring
diagram.
No
Yes
3. Motor Overload Protector Cycles Repeatedly
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4. Motor Runs But Cylinder Does Not Turn
Motor Runs But Cylinder
Does Not Turn
Machine Troubleshooting
Is cylinder
belt
broken?
No
Is cylinder
binding?
Yes
Yes
Replace
cylinder belt.
Check cylinder
for binding.
TMB1905S
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Machine Troubleshooting
5. Motor Does Not Stop
Motor Does
switch or lint panel switch
not working
Not Stop
Is the door
properly?
No
Yes
Test switches and replace if
inoperative.
Is coin drop not working
properly?
No
Is wiring
incorrect?
No
Is electronic
control
inoperative?
No
Yes
Yes
Yes
Test coin drop
and replace if
inoperative.
Refer to wiring
diagram.
Replace
electronic
control.
Is motor
inoperative?
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relay
Yes
Test relay and
replace if
inoperative.
TMB2038S
6. No Heat Condition (Non-CE and Non-Australian Models)
To re d uce th e r is k o f e l ec tri c s hoc k, fir e, ex p los io n , s er i ous i n ju r y o r d ea t h:
•Disconnect electric power to the tumble dryer before servicing.
•Close gas shut-off valve to gas tumble dryer before servicing.
•Close steam valve to steam tumble dryer before servicing.
•Never start the tumble dryer with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the tumble dryer is properly grounded.
W002R1
WARNING
Ignition Control Module Function
There are four components to the ignition system: the module, the spark igniter, the high voltage cable and ground wire. When 24 VAC is applied between the TH and GND terminals on the module, the module will send the high voltage signal to the igniter and 24 VAC to the gas valve coils. Gas will hit the sparking igniter and flame will be established. The igniter being engulfed in flame will create a millivolt electric signal that is sent back to the module by the high voltage cable; this is what them module sees as flame recognition. If the millivolt signal is not at the module in ten seconds, the module will go into safety lockout. The voltage will be cut from the igniter and gas valve coils and will not be restored until voltage is cycled at the module.
Machine Troubleshooting
Intermittent Heat Test Procedure
On ignition control modules with date codes higher than 08t2, perform the following test.
Start the tumble dryer and run for 10 minutes (verify that the tumble dryer is heating properly). After the 10 minute cycle, re-start the tumble dryer and once again verify the unit is heating. Repeat this procedure 3 times. If the tumble dryer passes this test, the ignition control module is operating properly and SHOULD NOT be changed. Refer to Troubleshooting Manual for additional service procedures.
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Machine Troubleshooting
Is the Ignition Control
Module’s red light on?
No
No
Yes
Yes
Refer to
Paragraph 7.
Replace igniter and high
voltage lead. Retest unit. If
unit still does not spark,
replace module.
No
Refer to Paragraph 7
for heat circuit
troubleshooting.
Is there
24 volts AC between
the TH and GND terminals
on the module?
Yes
No
Check wiring between gas valve and module.
If wiring is good,
replace module.
Yes
Yes
Is there continuity
between GND terminal on
module and machine?
No No
Does the igniter
spark but no
flame is produced?
No
Yes
Is there
24 volts AC at the gas
valve coils when igniter
is sparking?
Is the igniter
positioned properly
in the flame, and does the
flame look good?
Does the igniter
spark?
Verify that gas is supplied to the machine. If gas and
voltage are present,
replace gas valve or coils.
Does the flame turn
off after igniter
stops sparking?
No
Yes
Replace module.
Adjust position of igniter and retest.
Yes
Verify machine is
properly grounded.
Replace igniter and
high voltage lead.
Retest unit. If it still
does not sense flame,
replace module.
TMB2395S
6. No Heat Condition
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7. Burner Does Not Ignite
Burner Does
Not Ignite
Is there
an improper or
inadequate exhaust
system?
No
Are there
blown fuses or
tripped circuit breakers
in external electric
supply line?
Yes
exhaust system
Yes
Refer to
Installation
Manual for
requirements.
Check fuses or
circuit breaker.
Is
stove limit
thermostat 2
inoperative?
No
Is
there an
insufficient gas
supply?
No
Machine Troubleshooting
Test thermostat 2
Yes
Yes
and replace if
inoperative.
Open partially closed gas shut-off valve, or
correct low gas
pressure. Check
manifold pressure
and adjust to
pressure specified on
serial plate. If
pressure cannot be
obtained, have your
local gas company
check main gas
pressure.
No
Is
drying
selector in the
“Cool Down”
portion of
cycle?
No
Is
the cabinet
thermostat
inoperative?
No
Is
stove limit
thermostat 1
inoperative?
Yes
Yes
Yes
Reset switch on microprocessor.
Test thermostat
and replace if
inoperative.
Test thermostat 1
and replace if
inoperative.
Are the orifices
incorrect?
No
Is there
lint
buildup?
No
Is there
inadequate
ductwork and
make-up
air?
Yes
Yes
Yes
Tumble Dryer is
equipped for type of
gas specified on
serial plate. If
orifices are different from that specified on serial
plate, obtain and
install correct orifices.
Clean lint
compartment. Check
damper for lint
accumulation. Check
ductwork for lint
buildup.
Refer to Installation
Manual to ensure that ductwork and
make-up air
openings are sized
accurately.
No
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No
Continued on
next page
TMB2187S-a
Machine Troubleshooting
Continued from
previous page
Is
there an
improper igniter
to burner
clearance?
Are valve coils
inoperative?
No
Clearance
should be
0.110 - 0.140
inch (2.79 - 3.55
mm).
Yes
Check valve
coils and replace if
necessary.
Yes
Is
there a
blown fuse on
tumble
dryer?
Yes
Check fuse
(located in
control box)
and replace if
necessary.
Is
gas shut-off
valve in the
closed
position?
Yes
Open shut-
off valve.
Is motor switch inoperative?
No
Replace IEI
control.
Yes
Replace motor.
Yes
Is the
IEI control
inoperative?
TMB2187S-b
Yes
Connect
ground wire
to ground
terminal.
Is the
ground wire
from Instant
Electronic Ignition
(IEI) board not
connected to
ground
terminal?
No
Is
there broken,
loose or incorrect
wiring?
Yes
Refer
to wiring
diagram.
Is the lint
panel not
closed
properly?
Yes
Unlock and open
lint panel. Close
panel ensuring a
tight fit, then lock.
Is the
airflow switch
inoperative?
Test switch
and replace
if inoperative.
Yes
No
No
No
No
No
No
Continued on
next page
No
7. Burner Does Not Ignite (continued)
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7. Burner Does Not Ignite (continued)
c
Continued from
previous page
Machine Troubleshooting
Is there
an inoperative
microprocessor or
hybrid timer?
No
Is
wrong
transformer
configuration
harness
installed?
No
Is Instant
Electronic
Ignition (IEI)
control in safety
lockout?
Yes
Yes
Yes
Test and replace
as needed.
Check incoming
voltage and install
correct
configuration
harness.
Reset IEI control by
opening and closing
loading door. (Non-
CE models only)
Reset IEI by
pressing reset
button on back of
unit. (CE models
only)
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© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
TMB2187S-
Machine Troubleshooting
Burner Ignites and Goes Out
Repeatedly
Is there
insufficient
gas
pressure?
Check gas
supply and
pressure.
Yes
Is the
cabinet
thermostat
inoperative?
Yes
Test thermostat
and replace if
inoperative.
Is the
exhaust system
improper or
inadequate?
Yes
Refer to
Installation
Manual for
exhaust
system
requirements.
No
No
Does
tumble dryer have
improper
orifices?
Yes
Tumble Dryer is
equipped for
type of gas
specified on serial
plate. If orifices are
different from that
specified on serial
plate, obtain and
install correct
orifices.
No
Is there excessive igniter to burner
clearance?
Yes
Refer to
Paragraph 43.
Is
there inadequate
make-up air?
Yes
Refer to
Installation Manual for
make-up air
requirements.
No
Is the
thermistor
inoperative?
Yes
No
Replace
thermistor.
Is the control
heater relay
malfunctioning?
Yes
Replace control.
No
Is there
broken, loose
or incorrect
wiring?
Yes
Refer to wiring
diagram.
No
Yes
Repair damper to
working order.
Are the back
draft dampers
locked in close
position?
No
TMB1908S
No
8. Burner Ignites and Goes Out Repeatedly
28 70380601
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