Primus DAM 9 User manual

DAM 9
SERVICE MANUAL INDUSTRIAL DRYERS
PUBLICATION DATE: 02/01
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Table of Contents
Section 1 – Safety Information
Locating an Authorized Servicer ............................4
Section 2 – Introduction
Customer Service ....................................................5
Nameplate Location ................................................5
Model Identification ................................................6
How Your Dryer Works ..........................................8
Section 3 – Troubleshooting
1. Motor Does Not Run ........................................9
2. Unit Stops In Cycle; Quits After The First Few
Loads; Has a Burning Smell; Cycles On Motor
Thermal Protector .........................................10
3. Motor Runs But Cylinder Does Not Turn ......11
4. Motor Does Not Stop .....................................11
5. Heating Assembly Does Not Heat Or Burner
Does Not Ignite ..............................................12
6. Igniter Does Not Glow (Gas Supply Sufficient)
– Gas Models .................................................13
7. Burner Ignites and Goes Out Repeatedly – Gas
Models ............................................................13
8. Igniter Glows But Burner Does Not Ignite – Gas
Models ............................................................13
9. Heater Assembly or Burner Shuts Off
Prematurely ....................................................14
10. Heater Assembly or Burner Repeatedly Cycles
Off On Limit Thermostat ...............................14
11. Heater Assembly or Burner
Does Not Shut Off ..........................................15
12. Clothes Do Not Dry .......................................15
13. Clothes Are Too Hot When Removed
From Dryer .....................................................16
14. Ignition Control Flashes .................................17
Section 4 – Grounding
15. Ground Wires From Terminal Block or Power
Cord To Rear Bulkhead and From Rear
Bulkhead To Control Housing .......................19
16. Metered and Nonmetered Models – Ground
Wires From Rear Bulkhead To Accumulator
Bracket or Timer (Depending On Model) and
From Cabinet Top To Control Panel ..............20
17. Ground Wires From Rear Bulkhead To Timer
Mounting Bracket and To Dryer Cabinet Top.
Ground Wires From Timer Mounting Bracket
To Graphic Panel ...........................................21
18. Ground Wires From Dryer Base To Wire
Harness and To Ignition Control
(Gas Models With Silicon nITRIDE Ignition
System) ..........................................................21
Section 5 – Service Procedures
19. Access Panel ..................................................23
20. Control Panel and Controls (Metered and
Nonmetered) ..................................................23
To Test Push-to-Start Switch..........................23
21. Graphic Overlay .............................................25
To Test Fabric Selector Switch.......................25
22. Timer (Nonmetered Models) .........................26
To Test Timer Contacts
(Nonmetered Models) .....................................26
23. Accumulator (Metered Models) .....................28
To Test Accumulator (Metered Models) ........29
24. Electronic Control ..........................................30
25. Coin Drop ......................................................32
26. Meter Case (Metered Models) .......................37
27. Timer Case (Nonmetered Models) ................39
28. Security Case and Card Reader .....................40
29. Control Hood .................................................43
30. Cabinet Top (Nonmetered Models) ...............43
31. Cabinet Top (Metered Models) ......................44
32. Lint Filter .......................................................45
33. Loading Door and Door Hinge ......................45
Reversing Door Procedure . . . ..............................46
34. Inner and Outer Door Panels And Door Pull .47
35. Door Strike .....................................................47
36. Door Seal .......................................................48
37. Front Panel and Panel Seal ............................49
38. Door Switch ...................................................49
To Test Door Switch.......................................49
39. Door Catch .....................................................49
40. Door Hinges ...................................................51
41. Hold-down Clips And Locators .....................51
42. Burner System Components (Gas Models) ...52
To Test Gas Valve Coils (Gas Models)..........54
To Test Igniter (Gas Models)..........................55
Ignition Control Grounding Check .................55
To Test Electrical Circuit to Ignition System
(Gas Models)...................................................55
To Test Sensor (Gas Models) .........................55

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43. Burner Housing and Heat Shroud
(Gas Models) ..................................................57
44. Limit Thermostat ...........................................57
To Test Heater Assembly (Electric Models)...57
45. Heating Element (Electric Models) ...............58
46. Thermistor or Thermostat ..............................59
To Test Thermal Fuse (Electric Models) ........59
To Test Cycling or Limit Thermostat .............60
47. Air Duct .........................................................60
48. Motor and Exhaust Assembly ........................60
To Test Drive Motor ......................................64
49. Front Bulkhead Assembly ..............................67
50. Cylinder Belt ..................................................69
51. Cylinder Assembly .........................................70
52. Rear Seal ........................................................71
53. Cylinder Rollers .............................................73
54. Outlet Cover ...................................................73
55. Rear Bulkhead and Heater Box ......................74
56. Terminal Block or Power Cord ......................76
Section 6 – Adjustments
58. Leveling Legs .................................................85
59. Burner Flame (Gas Models) ...........................86
Section 7 – Internal Wiring of Dryer Motor
Switch .....................................................................89
Section 8 – Wiring Diagrams ............................91
Model SDE707*F1500 ..........................................92
Model SDE607*F1500 ..........................................93
Models SDE407*F1500 and SDE507*F1500 .......94
Models SDE107*F1500, SDE107*F1724 and
SDE307*F1500 ...............................................95
Model SDG409*F3058..........................................96
Model SDE009*F3058 ..........................................97
Model SDE407*F4350 ..........................................98
Model SDE407*A3000..........................................99
Model SDE107*F4350 ........................................100
Model SDE007*F4350 ........................................101
Model HDG709*F1102 .......................................102
Model HDG509*F1102 .......................................103
ModelS HDG109*F3000, SDG109*F3000 and
SDG109*F5412.............................................104
ModelS HDG109*F1102 and SDG109*F1124...105
Models HDG009*F3000, SDG009*F3000 and
UDG009*F3000 ............................................106
Models HDG109*G3013 and SGG109*G3013 ..107
Model HDG009*F1102 .......................................108
Model HDG009*G3008.......................................109
ModelS HDE707*F1502 and HDE707*F1702 ...110
ModelS HDE507*F1502 and HDE507*F1702 ...111
ModelS HDE107*F3000, SDE107*F3000 and
SDE107*F5412 .............................................112
ModelS HDE107*F1502 and HDE107*F1702 ...113
ModelS HDE107*G3003, HDE107*G3018 and
SDE107*G3018 ............................................114
Model HDE007*F1702........................................115
ModelS HDE007*F3000, SDE007*F3000 and
UDE007*F3000 ............................................116
ModelS HDE007*G3003, HDE007*G3008,
HDE007*G3010 and SDE007*G3018..........117
Model UDE007*F3025........................................118
Model UDG009*F3025 .......................................119
ModelS HDEB07*J1502, HDEB07*J1702,
HDEF07*J1502, HDEF07*J1702,
SDEA07*J1500, SDEB07*J1500 and
SDEF07*J1500..............................................120
ModelS HDGB09*J1102 and HDGF09*J1102...121
Model SDEA07*J3000 ........................................122
Model SDEA07*J4350 ........................................123

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© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Section 1
Safety Information
Throughout this manual and on machine decals, you will find precautionary statements (“CAUTION,”
“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.
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 (“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

4516514
Section 1 Safety Information
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
NOTE: The WARNINGS and IMPORTANT INSTRUCTIONS appearing in this manual are not meant to
cover all possible conditions and situations that may occur. Common sense, caution and care must be
exercised when installing, maintaining or operating the dryer.
Always contact your dealer, distributor, service agent or the manufacturer about any problems or conditions you do
not understand.
Locating an Authorized Servicer
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.
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect electric power to the dryer(s) before servicing.
• Close gas shut-off valve to gas dryer(s) before servicing.
• Never start the dryer(s) with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the dryer is properly grounded.
W001R1
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
WARNING

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© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
Section 2
Introduction
Customer Service
If literature or replacement parts are required, contact
the source from whom the machine was purchased or
contact Alliance Laundry Systems at [phone]
for the name and address of the nearest authorized
parts distributor.
For technical assistance, call [phone].
Nameplate Location
When calling or writing about your product, be sure to
mention model and serial numbers. Model and serial
numbers are located on nameplate(s) as shown.
D412P

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Section 2 Introduction
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
Model Identification
Information in this manual is applicable to these dryers.
Dryer
Model Nonmetered Model Metered Model
Electronic
Display
Control
Coin
Slide
Ready
Coin
Drop
Ready
Coin
Drop
Installed
Card
Reader
Ready
Card
Reader
Installed
Electric
Heat Gas Heat
HDE007*F1702 X X
HDE007*F3000 X X
HDE007*G3003 X X
HDE007GG3008 X X
HDE007*G3010 X X
HDE107*F1502 X X
HDE107*F1702 X X
HDE107*F3000 X X
HDE107*G3003 X X X
HDE107*G3018 X X
HDE507*F1502 X X X X
HDE507*F1702 X X X X
HDE707*F1502 X X X
HDE707*F1702 X X X
HDEB07*J1502 X X X
HDEB07*J1702 X X X
HDEF07*J1502 X X X
HDEF07*J1702 X X X
HDG009*F1102 X X
HDG009*F3000 X X
HDG009*G3008 X X
HDG109*F1102 X X
HDG109*F3000 X X
HDG109*G3013 X X
HDG509*F1102 X X X X
HDG709*F1102 X X X
HDGB09*J1102 X X X X
HDGF09*J1102 X X X X
SDE007*F1500 X X
SDE007*F3000 X X
SDE007*F4350 X X
SDE007*G3018 X X
SDE107*F1500 X X X
SDE107*F1724 X X X
SDE107*F3000 X X
SDE107*F4350 X X
SDE107*F5412 X X
SDE107*G3018 X X
* Add Letter To Designate Color. L – Almond W – White

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Section 2 Introduction
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
SDE307*F1500 X X X
SDE407*F1500 X X X
SDE407*F3000 X X X X
SDE407*F4350 X X X X
SDE507*F1500 X X X
SDE607*F1500 X X X
SDE707*F1500 X X X
SDEA07*J1500 X X X
SDEA07*J3000 X X X
SDEA07*J4350 X X X
SDEB07*J1500 X X X
SDEF07*J1500 X X X
SDG009*F3000 X X
SDG009*F3058 X X
SDG109*F1124 X X X
SDG109*F3000 X X
SDG109*F3058 X X
SDG109*F5412 X X
SDG109*G3013 X X
SDG409*F3058 X X X
UDE007*F3000 X X
UDE007*F3025 X X
UDG009*F3000 X X
UDG009*F3025 X X
Dryer
Model Nonmetered Model Metered Model
Electronic
Display
Control
Coin
Slide
Ready
Coin
Drop
Ready
Coin
Drop
Installed
Card
Reader
Ready
Card
Reader
Installed
Electric
Heat Gas Heat
* Add Letter To Designate Color. L – Almond W – White

8516514
Section 2 Introduction
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
How Your Dryer Works
The dryer uses heated air to dry loads of laundry. When the motor is started, the exhaust fan pulls room
temperature air in through louvers at the rear of the dryer and over the heat source (burner flame for gas
and heating element for electric). The heated air moves through the heater duct and into the cylinder,
where it circulates through the wet load. The air then passes through the lint filter, air duct, and exhaust
fan, where it is vented to the outdoors.
D390SE3A
LINT
FILTER
CYLINDER
EXHAUST
FAN
HEATER
DUCT

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To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the dryer(s) before servicing.
•Close gas shut-off valve to gas dryer(s) before servicing.
•Never start the dryer(s) with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the dryer is properly grounded.
W001R1
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
Section 3
Troubleshooting
IMPORTANT: Refer to wiring diagram for aid in testing dryer components.
1. MOTOR DOES NOT RUN
POSSIBLE CAUSE TO CORRECT
Electrical power off, fuse blown, or power cord not
plugged in. • Check laundry room for blown or loose fuse(s), or open circuit breaker(s). The dryer itself does not have an
electrical fuse.
• Check both fuses for electric models.
Loading door not closed. • Close door.
Inoperative door switch. • Test switch and replace if inoperative.
Timer improperly set. • Reset timer, or try another cycle.
Inoperative timer. • Test timer and replace if inoperative.
Motor starting functions inoperative.
Doesn’t start, or motor just hums. • Check start switch and start windings.
Motor is dead, will not run. • Check start switch, start windings, and main windings.
Motor overload protector has cycled. • Wait two or three minutes for overload protector to reset.
If protector cycles repeatedly, refer to Paragraph 2.
Motor centrifugal switch sticky or plugged with
lint. • Remove dust or lint and spray with “SLYDE,” No. 131P4, to clean and lubricate.
Bind in motor bearing. • Remove belt and determine if motor shaft will spin.
• Replace motor if shaft is locked up.
Loose motor wire harness connection block. • Firmly press connection block onto motor switch.
Broken, loose, or incorrect wiring. • Refer to wiring diagram.
Power cord is miswired. • Refer to wiring diagram for the correct wiring.

10 516514
Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the dryer(s) before servicing.
•Close gas shut-off valve to gas dryer(s) before servicing.
•Never start the dryer(s) with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the dryer is properly grounded.
W001R1
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
2. UNIT STOPS IN CYCLE; QUITS AFTER THE FIRST FEW LOADS; HAS A BURNING SMELL;
CYCLES ON MOTOR THERMAL PROTECTOR
POSSIBLE CAUSE TO CORRECT
Incorrect Voltage. • See nameplate in door well for correct voltage.
• Refer to Installation Instructions (supplied with dryer)
for electrical requirements.
Clothes load too large. • Remove part of load. A normal washer load is a normal
dryer load. Maximum load: dryer cylinder one half full of
wet clothes.
Clothes cylinder is binding. • Check cylinder for binding and “out of round” condition.
• Check front and rear bulkheads for warping.
• Check support rollers for binding.
• Check cylinder seals and glides for wear or damage.
• Check for clothes lodged between cylinder baffle and
bulkhead.
Broken, loose or incorrect wiring. • Refer to wiring diagram.
Motor switch functions inoperative.
Short in motor winding. • Check switch and windings.
Clothes item caught in fan. • Check fan for obstruction.

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Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the dryer(s) before servicing.
•Close gas shut-off valve to gas dryer(s) before servicing.
•Never start the dryer(s) with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the dryer is properly grounded.
W001R1
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
3. MOTOR RUNS BUT CYLINDER DOES NOT TURN
4. MOTOR DOES NOT STOP
POSSIBLE CAUSE TO CORRECT
Motor drive pulley loose. • Tighten pulley.
Belt not installed on pulley. • Install belt. Refer to Figure 47.
Broken cylinder belt. • Replace belt.
Clothes cylinder is binding. • Check cylinder for binding and “out of round” condition.
• Check front and rear bulkheads for warping.
• Check cylinder rollers for binding.
• Check cylinder seals and glides for wear or damage.
Broken, weak or disconnected idler lever spring. • Replace or reconnect spring. Refer to Figure 48.
Belt routed on wrong side of idler lever. • Reroute belt. Refer to Figure 47.
Oil on cylinder. • Wipe oil from cylinder.
Belt is “inside out.” • Reinstall belt with ribbed surface against cylinder.
Idler arm is binding. • Add grease between idler arm and motor mount.
• Replace idler arm and bolt if needed.
Dryer is overloaded. • Remove some laundry from dryer.
Wrong motor. • Refer to parts manual for correct motor part number.
Wrong belt used on dryer. • Check belt part number against correct part number in the
Parts manual.
• Replace belt if needed.
Bent idler arm. • Replace idler arm.
POSSIBLE CAUSE TO CORRECT
Incorrect wiring to motor switch. • Refer to wiring diagram.
Motor centrifugal switch sticky or plugged with
lint. • Remove dust or lint and spray with “SLYDE,” Part No. 131P4, to clean and lubricate.
Inoperative door switch. • Test switch and replace if inoperative.
Inoperative timer – nonmetered models. • Test timer and replace if inoperative.

12 516514
Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the dryer(s) before servicing.
•Close gas shut-off valve to gas dryer(s) before servicing.
•Never start the dryer(s) with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the dryer is properly grounded.
W001R1
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
5. HEATING ASSEMBLY DOES NOT HEAT OR BURNER DOES NOT IGNITE
POSSIBLE CAUSE TO CORRECT
Improper or inadequate exhaust system. • See Installation Instructions (supplied with dryer) for
exhaust requirements.
Use of plastic or thin foil exhaust duct. • Replace with rigid or semi-rigid metal exhaust duct.
Blown house fuse or tripped circuit breaker. • Check fuses or circuit breakers. A 240 Volt dryer uses two
fuses. Make sure both fuses are good.
Temperature selector switch set at FLUFF, or
inoperative. • Reset or test switch and replace if inoperative.
Timer improperly set (set ina cool-down period, or
a no heat cycle). • Reset timer. Try another cycle.
Inoperative limit thermostat. • Test thermostat and replace if inoperative.
Inoperative drive motor switch. • Test switch and replace if inoperative.
Electric Models: Inoperative heater assembly. • Test heater assembly and replace if cold Ohms do not read
between9and10.5Ohms.
Electric Models: Inoperative thermal fuse. • Test thermal fuse and replace if inoperative.
Gas Models: Insufficient gas supply. • Check gas shut-off valve in dryer and main gas line valve.
• Open partially closed gas shut-off valve, or correct low
gas pressure.
Gas Models: Inoperative gas valve coils. • Test coils and replace if inoperative.
Gas Models: Inoperative sensor. • Test sensor (Paragraph 42, step d) and replace if
inoperative.
Gas Models: Inoperative igniter. • Test igniter and replace if inoperative.
Gas Models: Harness not properly connected to gas
controls. • Check harness connections to gas valve coils, sensor and main harness.
• Reconnect as required.
Gas Models: Restricted gas flow in gas orifice. • Clean out gas orifice.
Inoperative cycling thermostat. • Test thermostat and replace if inoperative.
Inoperative timer. • Test timer and replace if inoperative.
Broken, loose, or incorrect wiring. • Refer to wiring diagram.

516514 13
Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the dryer(s) before servicing.
•Close gas shut-off valve to gas dryer(s) before servicing.
•Never start the dryer(s) with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the dryer is properly grounded.
W001R1
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
6. IGNITER DOES NOT GLOW (Gas Supply Sufficient) – GAS MODELS
7. BURNER IGNITES AND GOES OUT REPEATEDLY – GAS MODELS
8. IGNITER GLOWS BUT BURNER DOES NOT IGNITE – GAS MODELS
POSSIBLE CAUSE TO CORRECT
No power to power leads on valve. • Check timer, selector switch, thermostats, motor switch,
and wiring.
Sensor failed with contacts open. • Replace sensor.
Igniter broken or open. • Replace igniter.
POSSIBLE CAUSE TO CORRECT
Improper or inadequate exhaust system. Weather
hood flapper restricted. •SeeInstallation Instructions (supplied with dryer) for exhaust requirements.
Burner heat not holding sensor contacts open. • Replace sensor, or correct gas supply problem.
Insufficient gas supply. • Check gas supply and pressure.
• Make sure gas shut-off valve is turned on.
Cracked igniter. • Replace igniter and bracket.
Inoperative or intermittent gas valve coils. • Check coils and replace appropriate coils.
POSSIBLE CAUSE TO CORRECT
Sensor failed in closed position. • Replace sensor.
Open secondary coil or holding coil. • Replace gas valve (in-warranty), or replace coils (out-of-
warranty).
Insufficient gas supply. • Check gas supply and pressure.
• Make sure gas shut-off valve is turned on.
Igniter and bracket installed improperly on burner
tube assembly. • Loosen screw and properly position igniter and bracket on burner tube assembly.
Sensor installed improperly on burner housing. • Loosen screw and properly position the sensor on the
burner housing.

14 516514
Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the dryer(s) before servicing.
•Close gas shut-off valve to gas dryer(s) before servicing.
•Never start the dryer(s) with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the dryer is properly grounded.
W001R1
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
9. HEATER ASSEMBLY OR BURNER SHUTS OFF PREMATURELY
10. HEATER ASSEMBLY OR BURNER REPEATEDLY CYCLES OFF ON LIMIT THERMOSTAT
POSSIBLE CAUSE TO CORRECT
Improper or inadequate exhaust system.
Weather hood flapper restricted. •SeeInstallation Instructions (supplied with dryer) for exhaust requirements.
Gas Models: Insufficient gas supply. • Check main gas line shut-off valve.
• Open partially closed gas shut-off valve, or correct low
pressure.
Gas Models: Dryer not properly equipped for type
of gas used. • Refer to “Gas Burner Conversion Procedures” supplied in gas burner conversion kit.
Gas Models: Improperly adjusted burner flame. • Adjust flame. Refer to Paragraph 59.
Cycling off on limit thermostat. • Momentarily connect a jumper wire across thermostat
terminals. If heater element heats or burner ignites when
jumper wire is connected, refer to Paragraph 10.
Gas models: Sensor contact closing • Replace sensor (Paragraph 42, step d) or adjust burner
flame. Refer to Paragraph 59.
Inoperative cycling thermostat. • Test thermostat and replace if inoperative.
Inoperative timer. • Test timer and replace if inoperative.
Broken, loose, or incorrect wiring. • Refer to wiring diagram.
POSSIBLE CAUSE TO CORRECT
External exhaust system longer or providing greater
restriction than recommended. • Refer to Installation Instructions (supplied with dryer) for exhaust system requirements.
Use of plastic or thin foil exhaust duct. • Replace with rigid or semi-rigid metal exhaust duct.
Clogged lint filter. • Clean lint filter.
Lint in internal dryer ductwork. • Disassemble dryer ductwork and clean.
Lint or other obstruction in external exhaust system. • Disassemble and clean exhaust system.
Hinged damper on exhaust system weather hood
not free to open. • Free hinged damper or replace weather hood
Limit thermostat cycling at too low a temperature. • Replace thermostat. Refer to Paragraph 44.
Air leak around loading door. (Door not sealing due
to damaged seal or inoperative door catch.) • Replace seal or catch.
Inoperative thermistor. • Test thermistor and replace if inoperative.
Air leak at blower seal. • Check and replace seal if necessary.
Air leak at cylinder seal(s). • Check and replace seal(s) if necessary.
Air leak at front panel seal. • Check and replace seal if necessary.

516514 15
Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the dryer(s) before servicing.
•Close gas shut-off valve to gas dryer(s) before servicing.
•Never start the dryer(s) with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the dryer is properly grounded.
W001R1
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
11. HEATER ASSEMBLY OR BURNER DOES NOT SHUT OFF
12. CLOTHES DO NOT DRY
POSSIBLE CAUSE TO CORRECT
Improper motor switch. (Timer must be in a heat
setting.) • Test switch and replace if inoperative.
Motor does not stop. • Refer to Paragraph 4.
Incorrect wiring. • Refer to wiring diagram.
Heater assembly shorted. • Remove heater assembly and check for short.
POSSIBLE CAUSE TO CORRECT
Heater assembly does not heat or burner does not
ignite. • Refer to Paragraph 5.
Too much water in articles being dried. • Remove excess water.
Laundry load too large. • Remove part of load. A normal washer load is a normal
dryer load. Maximum load: Dryer cylinder one half full of
wet clothes.
Laundry load too small. • Add one or two bath towels to load.
Excessive lint on lint filter. • Clean lint filter.
Heat selector switch set on FLUFF or inoperative. • Reset switch or timer, or test and replace the switch or
timer if inoperative.
Improper or inadequate exhaust system. • See Installation Instructions (supplied with dryer) for
exhaust requirements.
Heater assembly or burner shuts off prematurely. • Refer to Paragraph 9.
Gas Models: Gas line pressure too high or too low. • If Natural Gas line pressure to dryer exceeds 8 inch water
column pressure, or is lower than 4 inch water column, ask
Gas Company to correct.
Improper belt installation (Low RPM). • Check for proper installation. Refer to Figure 47.

16 516514
Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the dryer(s) before servicing.
•Close gas shut-off valve to gas dryer(s) before servicing.
•Never start the dryer(s) with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the dryer is properly grounded.
W001R1
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
13. CLOTHES ARE TOO HOT WHEN REMOVED FROM DRYER
POSSIBLE CAUSE TO CORRECT
Improper or inadequate exhaust system. • Refer to Installation Instructions (supplied with dryer)
for exhaust requirements.
Clothes are removed from dryer before cycle has
completed. • Allow the dryer to complete the cycle through the cool- down to the OFF position.
Inoperative cycling thermostat. Inoperative
thermostat heater on the DELICATE setting. • Test cycling thermostat and replace if inoperative.
Inoperative timer (not allowing cool-down). • Test timer and replace if inoperative.
Inoperative seals (air leaks). • Check and replace any inoperative seals in the following
areas:
1. Seal between loading door and front panel.
2. Seal between front panel and front bulkhead.
3. Seal between blower cover and air duct.
4. Seal between cylinder and front or rear bulkhead.
5. Gap between air duct and filter mounting.

516514 17
Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the dryer(s) before servicing.
•Close gas shut-off valve to gas dryer(s) before servicing.
•Never start the dryer(s) with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the dryer is properly grounded.
W001R1
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
14. IGNITION CONTROL FLASHES
(Figure 1)
NOTE: This control will lock-out the igniter after four failed attempts at ignition. The control can be reset by
opening loading door, waiting 1 minute, then closing loading door. If door is closed before waiting 1 minute, the
control will re-enter lockout. The red light will flash a “Flash Code” when the control is in the lock-out mode. The
light will flash on for 1/4 second then off for 1/4 second for each number. The pause between flash codes is 2
seconds. These flashes are caused by the control’s diagnostic test and can be interpreted by reading the following:
FLASH CODE POSSIBLE CAUSE TO CORRECT
Constant Light Internal failure. • Reset dryer. If condition persists, then
replace control.
One Flash Air in gas line. • Purge air from gas line.
Sensor coated with Aluminum Oxide. • Wipe sensor clean or replace sensor if
necessary.
Incorrect gas pressure. • Check for correct gas pressure. If gas
pressure is incorrect, then contact local gas
company.
Gas shut-off valve closed. • Open gas shut-off valve.
Four Flashes Internal failure. • Reset dryer. If condition persists, then
replace control.
Loose or disconnected wiring. • Check all wiring leading to, or coming from,
the control module for secure connections.
Open Igniter/igniter sensing circuit/voltage
measurement circuit. • Check igniter and all circuits, replace if necessary.
Five Flashes Loose or disconnected wiring. • Check all wiring leading to, or coming from,
the control module for secure connections.
Inoperative gas valve. • Check gas valve and replace if necessary.
Inoperative sensor. • Replace sensor/igniter.
Six Flashes Loose or disconnected wiring. • Check all wiring leading to, or coming from,
the control module for secure connections.
Incorrect wiring. • Check wiring diagram and make sure dryer
is wired correctly.
Incorrect polarity. • Contact a professional electrician to check
the polarity, and correct any problems.
(continued)

18 516514
Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the dryer(s) before servicing.
•Close gas shut-off valve to gas dryer(s) before servicing.
•Never start the dryer(s) with any guards/panels removed.
•Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the dryer is properly grounded.
W001R1
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
14. IGNITION CONTROL FLASHES (continued)
FLASH CODE POSSIBLE CAUSE TO CORRECT
Seven Flashes Loose or disconnected wiring. • Check all wiring leading to, or coming
from, the control module for secure
connections.
Sensor and/or appliance not properly
grounded. • Check grounding from control to base, and from lead in cord to dryer.
Rapid Flashing Incorrect frequency. • Contact a professional electrician to check
the frequency, and correct any problems.
Power supply must be 50 – 60 Hz. 2-wire,
plus grounding (earth) wire.
Figure 1
WR
WHITE - ROGERS DIV.
EMERSON ELECTRIC CO.
DISCONNECT POWER
BEFORE SERVICING
DISCONNECT POWER
BEFORE SERVICING
DISCONNECT POWER
BEFORE SERVICING
DISCONNECT POWER
BEFORE SERVICING
DISCONNECT POWER
BEFORE SERVICING
DISCONNECT POWER
BEFORE SERVICING
DISCONNECT POWER
BEFORE SERVICING
DISCONNECT POWER BEFORE
SERVICINGGDGHDHJD DHJD DHD HD
HD HD HDGFJGFKGK GFJHGJ FHFH
F KJFJF KH GJHJF JDAPALS DK KF
DISCONNECT POWER BEFORE
SERVICING SERVICEING OK
IMPORTANT
DIAGNOSTIC INDICATOR
MODEL 50A72-203.
WARNING
WR
CONTROL
RED
LIGHT
D194SE3B