ALLIANCE | Dryers | Service manual | ALLIANCE Dryers Service manual

Troubleshooting
Commercial
Stacked Washer/
Dryers
Refer to Page 6 for Model Numbers
SWD447C
www.comlaundry.com
Part No. 802748R3
June 2011
Table of
Contents
Section 1 – Safety Information ...............................................................3
Locating an Authorized Servicer...........................................................4
Section 2 – Introduction ..........................................................................5
Customer Service...................................................................................5
Nameplate Location...............................................................................5
Model Identification ..............................................................................6
Theory of Operation ..............................................................................8
Section 3 – General Troubleshooting...................................................10
1. Troubleshooting Coin Drop ........................................................10
2. Washer Motor Circuit .................................................................15
3. Troubleshooting Knocking Noise ...............................................15
4. No Spin Due to Out-of-Balance Switch Wiring Problem Starting
Serial Nos. Beginning 0307 ........................................................16
5. Troubleshooting LEDs on Washer Inverter Controls Starting
Machine Serial No. 0911014603 ................................................17
6. No Spin (Washer)........................................................................17
7. Troubleshooting Shock Absorbers..............................................19
Section 4 – Dryer Troubleshooting ......................................................21
4. Dryer Motor Does Not Run ........................................................22
5. Dryer Stops In Cycle; Quits After The First Few Loads; Has A
Burning Smell; Cycles On Motor Thermal Protector .................23
6. Dryer Motor Runs But Cylinder Does Not Turn ........................24
7. Dryer Motor Does Not Stop........................................................25
8. Dryer Runs Only When Door is Open ........................................26
9. Dryer Heating Assembly Does Not Heat or
Burner Does Not Ignite ...............................................................27
10. Igniter Does Not Glow (Gas Supply Sufficient) –
Gas Dryer Models .......................................................................29
11. Burner Ignites and Goes Out Repeatedly – Gas Dryer Models ..30
12. Igniter Glows But Burner Does Not Ignite – Gas Dryer Models31
13. Dryer Heater Assembly Or Burner Shuts Off Prematurely ........32
14. Dryer Heater Assembly or Burner Repeatedly Cycles Off On
Limit Thermostat.........................................................................33
15. Dryer Heater Assembly or Burner Does Not Shut Off ...............35
16. Clothes Do Not Dry in Dryer......................................................36
17. Clothes Are Too Hot When Removed From Dryer ....................37
18. Excessive Chattering Or Vibrating Noise in Dryer ....................38
19. Excessive Humming Or Whistling Noise in Dryer.....................39
Section 5 – NetMaster and MDC Troubleshooting
– Washer Control...................................................................................40
20. Error Code Listing ......................................................................41
21. Microwand Does Not Communicate With Washer Control –
NetMaster Models Only..............................................................42
22. Coins Ignored When Entered in Washer Coin Drop...................43
23. No Visible Display on Washer Control ......................................44
© Copyright 2011, 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.
802748
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1
24. Washer Will Not Start – “door” Displayed (Door must be closed
and attempting to lock) ...............................................................46
25. Washer Will Not Start – “E:dL” on Display...............................48
26. Washer Will Not Fill (Machine empty, no “E:SP” on display) ..50
27. Washer Overflows.......................................................................52
28. Washer Pump or Drain Valve Does Not Operate .......................54
29. Serial Communication Error (“E:SP” on washer display) ..........56
30. Washer Motor Does Not Run (“E:df” on display)......................58
31. Washer Will Not Heat (“OP” or “SH” displayed)
(Models equipped with heater)60
32. Washer Will Not Heat (Models equipped with heater) ..............62
Section 6 – NetMaster Troubleshooting – Dryer Control..................64
33. Error Code Listing ......................................................................64
34. Coins Ignored When Entered in Dryer Coin Drop .....................67
35. No IR Communication with Dryer Control ................................68
36. No Display on Dryer Control......................................................69
37. Dryer Door Open ........................................................................71
38. Dryer Motor Will Not Start.........................................................73
39. No Heat (Electric Dryer Models)................................................75
40. No Heat (Gas Dryer Models) ......................................................77
Section 7 – MDC Troubleshooting – Dryer Control...........................79
41. Error Code Listing ......................................................................79
42. Coins Ignored When Entered in Dryer Coin Drop .....................80
43. No Visible Display on Dryer Control .........................................82
44. Dryer Door Open ........................................................................84
45. Dryer Motor Will Not Start.........................................................86
46. No Heat (Electric Dryer Models)................................................88
47. No Heat (Gas Dryer Models) ......................................................90
Section 8 – Adjustments ........................................................................92
48. Cabinet Leveling Legs ................................................................92
49. Washer Loading Door.................................................................93
50. Washer Motor Belt Tension........................................................94
51. Washer Door Catch.....................................................................95
52. Shipping Braces ..........................................................................97
53. Burner Flame (Gas Models)........................................................98
54. Cleaning Non-Electronic Coin Drop...........................................99
55. Cleaning Electronic Coin Drop.................................................101
Section 9 – Dryer Test Procedures .....................................................105
56. Drive Motor...............................................................................105
57. Motor Switch.............................................................................108
58. Burner System Operation..........................................................110
59. Electrical Circuit To Ignition System (Gas Models) ................111
60. Gas Valve Coils Check (Gas Models) ......................................111
61. Sensor Check (Gas Models)......................................................112
62. Igniter Check (Gas Models)......................................................112
63. Thermal Fuse (Electric Models) ...............................................113
64. Heater Assembly (Electric Models)..........................................113
65. Cycling or Limit Thermostat.....................................................113
66. Door Switch ..............................................................................114
Section 10 – Internal Wiring of Dryer Motor Switch.......................115
2
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
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.
a DANGER
Danger indicates an imminently hazardous situation that, if not avoided, will cause severe personal injury or death.
WARNING
Warning indicates a hazardous situation that, if not avoided, could cause severe personal injury or death.
CAUTION
Caution indicates a hazardous situation that, if not avoided, may cause minor or moderate personal injury or property
damage.
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.
WARNING
• Failure to install, maintain, and/or operate this machine 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 machine 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 machine is properly grounded and to reduce the risk of fire,
electric shock, serious injury, or death.
W284
802748
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3
Safety Information
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
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 machine, 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.
W286
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 machine.
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.
4
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802748
Section 2
Introduction
Customer Service
If literature or replacement parts are required, contact
the source from whom the machine was purchased or
contact Alliance Laundry Systems at (920) 748-3950
for the name and address of the nearest authorized
parts distributor.
For technical assistance, call either of the numbers
listed below:
(920) 748-3121 Ripon, Wisconsin
+32 56 41 20 54 Wevelgem, Belgium
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.
Nameplate
SWD1165P
802748
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
5
Introduction
Model Identification
Information in this manual is applicable to these washers.
Model Number
MDC
BTEBCFSP171TW01
X
Electric
BTEBEFSP171TW01
X
Electric
BTEBEFSP281CW01
X
Electric
BTEBLFSP431AW01
X
Electric
BTEL75*N4065
X
Electric
BTEL77*N4065
X
Electric
BTEX75*N4065
X
Electric
BTEX77*N1727
X
Electric
BTEX77*N4065
X
Electric
BTEX77*N4350
X
Electric
BTGBCFSP111TW01
X
Gas
BTGBEFSP091CW01
X
Gas
BTGBEFSP111TW01
X
Gas
BTGBLFSP301AW01
X
Gas
BTGX79*N1127
X
Gas
BTGX79*N3060
X
Gas
HTEB77*N2802
X
Heat
Electric
HTET77*N
X
Electric
HTET77*N2802
X
Electric
HTEX77*N2802
X
Electric
HTEX77*N2902
X
Electric
HTEY77*N
X
Electric
HTEY77*N2802
X
Electric
HTGB79*N0902
X
Gas
HTGT79*N
X
Gas
HTGT79*N0902
X
Gas
HTGX79*N0902
X
Gas
HTGY79*N
X
Gas
HTGY79*N0902
X
Gas
NTEL77*N4064
X
Electric
NTEX77*N3000
X
Electric
NTEX77*N4064
X
Electric
NTEX77*N4067
X
Electric
NTEX77*N5400
X
Electric
NTGL79*N4067
X
Gas
NTGX79*N3000
X
Gas
NTGX79*N4067
X
Gas
STEA77*N
6
NetMaster
X
Electric
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802748
Introduction
Model Number
MDC
NetMaster
Heat
STEA77*N3069
X
Electric
STEB77*N
X
Electric
STEBXFSP301NW22
X
Electric
STEF77*N
X
Electric
STEF77*N4350
X
Electric
STET77*N
X
Electric
STEX77*N
X
Electric
STEX77*N2827
X
Electric
STEX77*N3000
X
Electric
STEX77*N4064
X
Electric
STEX77*N4350
X
Electric
STEX77*N5400
X
Electric
STEX77*N5754
X
Electric
STEY77*N
X
Electric
STEY77*N4064
X
Electric
STEY77*N5754
X
Electric
STGA73*N
X
Gas
STGA79*N
X
Gas
STGB79*N
X
Gas
STGBXFSP301NW22
X
STGF79*N
Gas
X
Gas
STGT79*N
X
Gas
STGX73*N
X
Gas
STGX79*N
X
Gas
STGX79*N3000
X
Gas
STGX79*N3060
X
Gas
STGY79*N
X
Gas
* Add Letter To Designate Color. W – White Q – Bisque
802748
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
7
Introduction
Theory of Operation
Heating Element
(Electric Models)
Cylinder
Lint
Filter
Exhaust Fan
Motor
Air Duct
Pressure Switch
(Located inside
control cabinet)
DRYER
WASHER
Electronic
Control
(Mounted to back
side of control panel)
Mixing
Valve
Inner
Basket
Inverter Control
(Mounted to base
of washer)
Outer
Tub
Electric
Drain Pump
(or Drain Valve)
Motor
SWD1687S
General (Dryer)
General (Washer)
The dryer uses heated air to dry loads of laundry.
When the motor is started, the exhaust fan pulls fresh
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.
This frontload washer provides some of the same
principles of operation as the typical topload washers.
It senses water level, it dispenses the desired laundry
detergent, agitates the clothes for good cleaning
action, removes the water out of the washer and spins
the clothing in preparation for the dryer.
8
The difference in operation is primarily the rotational
washing agitation created for the horizontal basket and
drum. This agitation tumbles the clothes in a
clockwise, pause, and counter-clockwise direction.
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802748
Introduction
This reversing tumbling action provides an efficient
washing process and requires less laundry detergent
and less water.
The cycle begins by locking the loading door after the
vend is satisfied. The type of cycle and water
temperature are determined by the appropriate pads on
the electronic control.
The inner basket starts agitating during the wash water
fill. A column of air is trapped in a pressure bulb and
hose. The air pressure continues to increase as the
inner basket fills with water until it is great enough to
activate the pressure switch, which then causes the
wash fill to stop.
The agitate cycle tumbles the clothing in a clockwise
direction for a period of 15 seconds, pauses for nine
seconds and then tumbles the clothing in a
counterclockwise direction for 15 seconds. This
agitation continues until the wash cycle. The machine
stops agitating and turns on the pump or drain valve
which removes the wash water.
Upon completion of the wash cycle, the machine goes
into a rinse cycle. Fresh cold water is brought into the
inner basket via the mixing valve until the pressure
switch shuts off the water while agitating. The rinse
cycle consists of agitation for a predetermined amount
of time then a spin mode with the pump running where
the machine goes into a series of 4 short 500 RPM
spins. Two of these rinse cycles will normally take
place with a third extra rinse cycle being optional.
After all the rinse cycles have been completed, the
washer goes into a final high spin cycle to extract as
much water as possible from the clothing to prepare
them for the dryer. The spin speeds and duration of
this final high spin cycle are determined by the type of
wash cycle selected (refer to Table 1 or Table 2).
NOTE: Washer may not reach 1000 RPM because
of an out-of-balance condition. Control may limit
speed to 850, 650 or 500 RPM depending on severity
of out-of-balance condition.
Models Through Serial No. 0911014602
650
RPM
1000
RPM
Regular
3
minutes
3
minutes
Perm Press
4
minutes
2
minutes
Delicate
4
minutes
0
minutes
Models Starting Serial No. 0911014603
500
RPM
650
RPM
1000
RPM
Regular
0
minutes
3
minutes
3
minutes
Perm Press
0
minutes
6
minutes
0
minutes
Delicate
4
minutes
0
minutes
0
minutes
Table 2
Technical (Washer)
The basic operational system of this washer consists of
the electronic control, the inverter control, pressure
switch, water valves, electric pump (or drain valve)
and A.C. motor.
The electronic control performs all control and timing
functions like the timer in a topload washer. The
electronic control sends simple speed and output
commands to the inverter control via serial
communication. The electronic control powers the
door lock, pump (or drain valve) and the inverter
control.
The inverter control powers the A.C. motor and
performs all motor control functions. The inverter
control also powers the water and dispenser valves and
passes the pressure switch status to the electronic
control. The inverter control is powered through the
door switch, door lock switch and electronic control.
The inverter control also alerts the electronic control to
any errors in the motor.
The inverter control uses a speed sensor on the motor
to measure the drum RPM. Before entering any spin
step the inverter control measures the RPM of the
drum to sense out-of-balance. The inverter control will
try to redistribute the clothes if an out-of-balance
condition exists. The inverter control will limit the
spin speed to several speeds depending on the severity
of the out-of-balance condition. If the out-of-balance
condition is severe enough the inverter control will
limit speed to 90 RPM and will not spin.
NOTE: An additional out-of-balance switch is used
to detect any out-of-balance condition during spins.
If this switch opens during a spin step, the inverter
control immediately stops and then restarts the
spin.
Table 1
802748
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9
Section 3
General Troubleshooting
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
1. Troubleshooting Coin Drop
a. Non-Electronic Coin Drops:
When coin is placed into coin slot, the coin
should roll down drop and be heard dropping into
coin vault. If coin does not fall into coin vault or
if coin drop sensor does not register that coin has
been entered, follow troubleshooting instructions
on following page. Refer to Figure 1 for path that
coin follows when working properly.
IMPORTANT: Never use oil to correct coin drop
problems. Oil residue will prevent coins from rolling
properly.
IMPORTANT: Do not bend or damage mechanical
parts within coin drop.
Additional coins
following path to
sensor
Coin in
Coin Slot
Coin Drop
Sensor
DRY2B
Figure 1
10
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
General Troubleshooting
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
Troubleshooting Coin Drop
Is proper
electrical power
supplied to coin drop?
(Incorrect electrical connection
may prevent coins from
registering in
coin drop.)
No
Refer to wiring
diagram for
proper connections.
Yes
Is
machine level?
(Machines that aren't
level may prevent coins from
following through required
check stages
of drop.)
No
Refer to
Installation Instructions
for instructions
on leveling machine.
Yes
Is coin drop
clean? (Residue or
lint build-up may prevent
coins from following through
required check stages
of drop.)
No
Refer to
Adjustments section
for instructions on cleaning
drop.
Yes
Do coins
fall freely
through drop?
No
Replace
coin drop.
Yes
Replace
coin drop sensor.
SWD1714S
802748
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11
General Troubleshooting
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
b. Electronic Coin Drops:
If coin drop is not accepting coins, perform the
following:
(1) Clean coin drop. Refer to Paragraph 55.
(2) On electronic coin drops with an old-style
tension spring (shown in Figure 2 and
Figure 4), test and replace tension spring
using the following instructions.
(2) Manually hold down coin drop cover and
insert coin. Refer to Figure 3.
Remove Coin Drop From Machine
(1) Disconnect electrical power to machine and
drop.
(2) Remove coin drop from machine.
MIX6B
Coin Drop
Cover
Figure 3
Test Tension Spring
(1) Push coin return button to open and close
coin drop cover to clear possible coin jams.
Refer to Figure 2.
(3) If coin drop now operates properly, replace
tension spring using instructions on
following pages.
Replace Tension Spring
Coin Return
Button
Coin Drop
Cover
Tension
Spring
(1) Move tension spring downward until cover
catch is free. Refer to Figure 4.
Tension
Spring
MIX7B
Figure 2
DRY2088N
Cover Catch
Figure 4
(2) Open cover for coin drop.
12
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
General Troubleshooting
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
(3) Place a small flathead screwdriver under
right side of tension spring and lift up.
Refer to Figure 5.
(9) Remove clip from spring. Refer to
Figure 7.
Small Flathead
Screwdriver
MIX4B
Clip
Figure 7
MIX2B
Left Tab
Right Side of
Tension Spring
Figure 5
(10) Attach clip to new tension spring, Part No.
209/00598/02.
(11) Place clip, installed on spring, in slot on
coin drop. Refer to Figure 8.
(4) Use screwdriver to move spring
approximately 3 mm to left.
(5) Lift spring over left tab. Refer to Figure 5.
(6) Rotate spring clockwise, 40 to 60 degrees,
until it is free from right tabs. Refer to
Figure 6.
Tabs
MIX8B
Slot
Figure 8
MIX3B
Center Tab
Figure 6
(7) Use screwdriver to remove spring from
center tab. Refer to Figure 6.
(8) Lift spring, with attached clip, off drop.
802748
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13
General Troubleshooting
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
(12) Use a small flathead screwdriver to push
spring under center tab. Refer to Figure 9.
Center
Tab
Small Flat
Screwdriver
Left Tab
MIX5B
Figure 9
(13) Lift spring gently to place in position under
left tab.
(14) Push spring to right until it snaps into
position. Refer to Figure 5.
(15) Close coin drop cover.
(16) Move tension spring over cover catch.
Refer to Figure 4.
Reinstall Coin Drop Into Machine
(1) Reinstall coin drop into machine.
(2) Reconnect electrical power to machine and
drop.
(3) Add a coin to drop to verify that coin drop
is operating properly and that electrical
connection is working properly.
14
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802748
General Troubleshooting
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
2. Washer Motor Circuit
Windings
White
Gray
Red
5 4 32 1
Resistance Values:
Tachometer Circuit:
Terminals 4–5
Approx. 115 ohms
Red
Red
Tach. Circuit
Windings:
Terminals 1–2, 2–3, 1-3
Approx. 4.5 ohms
3. Troubleshooting Knocking Noise
If a frontload washer produces a noise similar to a
knock on a door, it might be due to a flat spot on
the belt. The knocking sound is made when the
flat spot hits the pulley. The knocking may occur
802748
during a pulse spin and fade after reaching a
higher RPM.
To correct this condition, replace the belt.
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15
General Troubleshooting
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
4. No Spin Due to Out-of-Balance Switch Wiring Problem Starting Serial
Nos. Beginning 0307
A “no spin” condition could be the result of an open circuit in the wire harness or out-of-balance switch. First, check
that the harness is still connected to the out-of-balance switch. The out-of-balance switch is a normally closed
switch. (continued)
45 degrees
Third Section
of Tape 14 In.
(35.56 cm)
From End of
Terminals
Wire Clamp
First Section
of Tape 4.5 In.
(11.43 cm)
From End of
Terminals
Wire Tie
Cut Off
Broken
Wires Here
FLW1842B
Figure 10
16
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802748
General Troubleshooting
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
If broken wires are found at the out-of-balance switch
wire support, cut off portion of wires as shown in
Figure 10 and add new UL approved terminals.
a. To test the electrical circuit, disconnect
electrical power to the washer.
b. Remove the “H1” connector from the inverter
control assembly.
c. Use an Ohm meter to check the black/white to
violet/white wires. Circuit should read closed.
An open reading indicates a bad switch or
wire harness problem.
d. Flex the harness at the plastic wire clamp and
test continuity. If the base wire harness has an
open circuit it MUST be replaced or the
broken wires must be repaired with UL
approved terminals.
e. After replacing or repairing the wire harness,
wrap electrical tape around wires in two
locations as indicated below and in Figure 10.
Then secure the harness wires to the original
factory locations using clamp and wire tie.
Refer to Figure 10.
(1) The plastic wire clamp should be angled
toward the switch at 45 degrees.
(2) The clamp should wrap around the first
section of tape on the harness, which should
be placed approximately 4.5 inches (11.43
cm) from end of terminals.
(3) The harness should be secured to the
inverter control shield with a wire tie.
(4) The tie should wrap around the third section
of tape on the harness, which should be
placed approximately 14 inches (35.56 cm)
from end of terminals. Refer to Figure 10.
802748
5. Troubleshooting LEDs on
Washer Inverter Controls
Starting Machine Serial No.
0911014603
There are three LEDs on the control to assist with
troubleshooting (refer to Figure 11):
• Green LED on constant = 5VDC power
supply present
• Green LED flashing one second on/one
second off = inverter control power up
• Red LED flashing four times/second =
inverter control is communicating with
front end control
LEDs
FLW1844B
Figure 11
6. No Spin (Washer)
A no spin condition is not caused by intermittent
operation of the motor or motor control (inverter
assembly). DO NOT replace these components for no
spin complaints if the unit passes the following
procedure:
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
17
General Troubleshooting
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
6. No Spin (continued)
No spin.
BEFORE replacing
the motor control
board, conduct the
following tests.
Is load
out-ofbalance?
Yes
Unit makes three
attempts to rebalance out-ofbalance loads. If all
attempts fail, final
high speed spin is
aborted. ONLY
proper loading can
correct problem.
No
Is there a slow
drain, clogged
pump or
oversudsing
condition?
No
Yes
Pressure switch
must register an
"empty" condition
before unit will
enter spin. Clear
drain or pump.
Allow unit to go
through complete
final spin cycle.
Does unit spin at
high speed?
Motor and
motor control
Yes board are
operating
properly. Do
not replace
them.
No
Check for broken out-ofbalance switch wires.
Refer to No Spin Due to
Out-of-Balance Switch
Wiring Problem Starting
Serial Nos. Beginning
0307 paragraph.
Does unit
spin now?
No
With no load, rapid
advance to final spin
or select spin only
cycle. Close door
and start washer.
Is pressure
switch or
pressure
switch wiring
inoperative?
Yes
Replace switch
and/or wiring.
FLW1789S
18
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
General Troubleshooting
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
7. Troubleshooting Shock Absorbers
A squeaking noise, oil seen on the base of the washer,
or an out-of-balance condition may mean one or more
shock absorbers need to be replaced.
To determine if there is an inoperative shock:
1. Remove front access panel.
2. Check height of rod or rod spacing above shock.
If all four shocks are uniform and have about two
inches of rod showing when basket is empty,
shocks don’t need replacing. Refer to Figure 12.
If one or more shocks is showing less than two
inches of rod, then an internal spring has broken
and all four shocks should be replaced.
3. Check base of washer below shock absorbers for
grease or oil. Shocks are not oil filled. Any oil is
from grease used internally to lubricate damper of
shock. A small amount of grease/oil on base is
normal and doesn’t indicate failure. A large
amount of grease/oil indicates a shock that might
fail soon. Do not replace shock until the internal
spring has broken as described in Step 2.
802748
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
19
General Troubleshooting
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
Good Shock Shows
Approximately 2
inches of Rod
FLW1845B
Figure 12
20
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
Section 4
Dryer Troubleshooting
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
IMPORTANT: Refer to wiring diagram for aid in testing dryer components.
802748
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
21
Dryer Troubleshooting
4. Dryer Motor Does Not Run
Dryer motor does not run.
Has motor
overload
protector
cycled?
No
Is power cord
plugged in?
Plug in cord.
Yes
Wait two or
three minutes
for overload
protector to
reset. If
Yes
protector
cycles
repeatedly,
refer to next
flowchart.
No
Is electrical power off or fuse
blown? Check laundry room for
blown or loose fuse(s), or open
circuit breaker(s). The dryer itself
doesn't have an electrical fuse.
No
Is loading
door closed?
Yes
Turn power on or
replace fuse. Check
both fuses for
electric models.
No
Close door.
Is motor
centrifugal
switch sticky
or plugged
with lint?
No
Is there a bind
in motor
bearing?
No
Yes
Remove
dust or lint
and spray
with a
cleaner and
lubricant.
Remove belt
and
determine if
Yes motor shaft
will spin.
Replace motor
if shaft is
locked up.
Yes
Is door switch
inoperative?
Yes
No
Refer to
Adjustments
section to
check start
switch and
Yes
start windings.
Check for
foreign
objects
jammed in
blower wheel.
Are motor starting
functions inoperative,
does not start, or motor
just hum?
No
Is motor dead,
won't run?
Test switch and
replace if
inoperative.
Yes
Refer toAdjustments
section to check start
switch, start windings
and main windings.
Is motor wire
harness
connection
block loose?
No
Is wiring
broken, loose
or incorrect?
Yes Refer to wiring
diagram.
No
Is power cord
miswired?
Yes Refer to wiring
diagram for
correct wiring.
SWD1689S
No
22
Firmly press
Yes connection
block onto
motor switch.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
Dryer Troubleshooting
5. Dryer Stops In Cycle; Quits After The First Few Loads; Has A Burning
Smell; Cycles On Motor Thermal Protector
Dryer stops in cycle, quits after first few
loads, has burning smell or cycles on
motor thermal protector.
Is voltage
incorrect?
Yes
No
Is clothes
load too
large?
Yes
No
Is clothes
cylinder
binding?
No
Yes
Refer to nameplate in
door well for correct
voltage. Refer to
Installation
Instructions (supplied
with unit) for
electrical
requirements.
Remove part of
load. A normal
washer load is a
normal dryer load.
Maximum load:
dryer cylinder one
half full of wet
clothes.
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.
Is there
broken, loose
or incorrect
wiring?
Yes
Refer to wiring
diagram.
No
Are motor
switch
functions
inoperative?
Yes
Refer to
Adjustments
section to
check switch
and windings.
No
Is there a
short in
motor
winding?
Yes
Refer to
Adjustments
section to
check switch
and windings.
No
Is a clothes
item caught in
fan?
Yes
Check fan for
obstruction.
SWD1690S
802748
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
23
Dryer Troubleshooting
6. Dryer Motor Runs But Cylinder Does Not Turn
Dryer motor runs but
cylinder does not turn.
Is motor drive
pulley loose?
Yes
Tighten pulley.
Is belt "inside
out" ?
Yes
Reinstall belt
with ribbed
surface
against
cylinder.
No
No
Is belt
installed on
pulley?
No
Install belt.
Is idler arm
binding?
Yes
Yes
No
Is cylinder
belt broken?
Yes
Replace belt.
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.
No
Is clothes
cylinder
binding?
Add grease
between idler
arm and
motor mount.
Replace idler
arm and bolt
if needed.
Yes
No
Is dryer
overloaded?
Yes
Remove some
laundry from
dryer.
No
Is the wrong
motor
installed?
Yes
Refer to parts
manual for
correct motor
part number.
No
Is idler lever
spring broken,
weak or
disconnected?
Yes
Replace or
reconnect
spring.
Is the wrong
belt installed?
No
Is belt routed
on wrong side
of idler lever?
No
Yes
Reroute belt.
Is idler arm
bent?
No
Is there oil on
cylinder?
Yes
Yes Replace idler
arm.
Wipe oil from
cylinder.
SWD1691S
No
24
Check belt
part number
Yes against correct
part number in
parts manual
and replace
belt if needed.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
Dryer Troubleshooting
7. Dryer Motor Does Not Stop
Dryer motor does not stop.
Is wiring to
motor switch
incorrect?
Yes
Refer to wiring
diagram.
No
Is motor
centrifugal
switch sticky
or plugged
with lint?
Yes
Remove dust or lint
and spray with a
cleaner and
lubricant.
No
Is door switch
inoperative?
Yes
Test switch and
replace if
inoperative.
SWD1692S
802748
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25
Dryer Troubleshooting
8. Dryer Runs Only When Door is Open
Dryer runs only when door is
open.
Yes
Is door switch
miswired?
Rewire door
switch. Refer to
wiring diagram.
No
Replace door switch.
SWD1693S
26
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
Dryer Troubleshooting
9. Dryer Heating Assembly Does Not Heat or Burner Does Not Ignite
Dryer heating assembly does not
heat or burner does not ignite.
Is exhaust
system
improper or
inadequate?
Yes
Refer to
Installation
Instructions
(supplied with
unit) for
exhaust
requirements.
Electric Models:
Is heater
assembly
inoperative?
Yes
Test heater
assembly
and replace
if cold
Ohms do
not read
between 9
and 10.5
Ohms.
No
No
Is exhaust
duct made of
plastic or thin
foil?
Yes
Replace with
rigid or semirigid metal
exhaust duct.
Check fuses or
circuit breakers. A
Yes 240 Volt electric
heat dryer uses two
fuses. Make sure
both fuses are
good.
Gas Models:
Is gas supply
insufficient?
Yes
No
No
Is limit
thermostat
inoperative?
Yes
Test thermal
fuse and
replace if
inoperative.
No
No
Is house fuse
blown or
circuit breaker
tripped?
Electric
Models: Is
thermal fuse
inoperative?
Yes
Test thermostat
and replace if
inoperative.
Gas Models:
Are gas valve
coils
inoperative?
No
Yes
Check gas
shut-off valve
in dryer and
main gas line
valve. Open
partially closed
gas shut-off
valve or
correct low
gas pressure.
Test coils and
replace if
inoperative.
Refer to
Dryer Test
Procedures
section.
No
Is drive
motor switch
inoperative?
Yes
Test switch
and replace if
inoperative.
Continued on
next page.
No
SWD1694S-a
802748
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
27
Dryer Troubleshooting
9. Dryer Heating Assembly Does Not Heat or Burner Does Not Ignite
(continued)
Continued from
previous page.
Gas Models:
Is sensor
inoperative?
Yes
Test sensor
and replace if
inoperative.
No
Gas Models:
Is igniter
inoperative?
Yes
Test
thermostat
and replace if
inoperative.
No
Yes
No
Gas Models: Is
harness properly
connected to gas
controls?
Is cycling
thermostat
inoperative?
No
Test igniter
and replace if
inoperative.
Refer to Dryer
Test
Procedures
section.
Is wiring
broken, loose
or incorrect?
Yes
Refer to wiring
diagram.
Check
harness
connections
to gas valve
coils, sensor
and main
harness.
Reconnect as
required.
Yes
Gas Models:
Is gas flow
restricted in
gas orifice?
Yes
Clean out gas
orifice.
No
SWD1694S-b
28
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
Dryer Troubleshooting
10. Igniter Does Not Glow (Gas Supply Sufficient) – Gas Dryer Models
Gas dryer models: Igniter
does not glow (gas supply
sufficient).
Is there power to
power leads on
valve (pink and
blue wires)?
No
Check
thermostats,
motor switch
and wiring.
Yes
Has flame
sensor failed
with contacts
open?
Yes
Replace sensor.
No
Is igniter broken
or open?
Yes
Replace igniter.
SWD1695S
802748
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
29
Dryer Troubleshooting
11. Burner Ignites and Goes Out Repeatedly – Gas Dryer Models
Gas dryer models: Burner ignites
and goes out repeatedly.
Is exhaust
system
improper or
inadequate?
Yes
Refer to
Installation
Instructions
(supplied with
unit) for
exhaust
requirements.
Is igniter
cracked?
Yes
Replace igniter
and bracket.
No
No
Is weather
hood flapper
restricted?
Yes
Refer to
Installation
Instructions
(supplied with
unit) for
exhaust
requirements.
Are gas valve
coils
inoperative or
intermittent?
Check coils and
replace
Yes appropriate coils.
Refer to Dryer
Test Procedures
section.
No
Is burner heat
holding sensor
contacts open?
No
Replace sensor
or correct gas
supply problem.
Yes
Is gas supply
insufficient?
Check gas supply
Yes and pressure.
Make sure gas
shut-off valve is
turned on.
No
SWD1696S
30
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
Dryer Troubleshooting
12. Igniter Glows But Burner Does Not Ignite – Gas Dryer Models
Gas dryer models: Igniter glows but
burner does not ignite.
Did sensor
fail in closed
position?
Yes
No
Is secondary
coil or holding
coil open?
Yes
No
Is gas supply
insufficient?
Yes
Replace sensor.
Is sensor
improperly
installed on
burner
housing?
Yes
Loosen screw
and properly
position the
sensor on the
burner housing.
Replace gas
valve (in
warranty) or
replace coils
(out of
warranty). Refer
to Dryer Test
Procedures
section.
Check gas
supply and
pressure. Make
sure gas shutoff valve is
turned on.
No
Are igniter
and bracket
improperly
installed on
burner tube
assembly?
Yes
Loosen screw and
properly position
igniter and bracket
on burner tube
assembly.
No
SWD1697S
802748
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
31
Dryer Troubleshooting
13. Dryer Heater Assembly Or Burner Shuts Off Prematurely
Dryer heater assembly or burner
shuts off prematurely.
Is exhaust
system
improper or
inadequate?
Refer to
Installation
Instructions
(supplied with
unit) for
exhaust
requirements.
Yes
Gas Models:
Is burner
flame
improperly
adjusted?
No
No
Is weather
hood flapper
restricted?
Refer to
Installation
Instructions
(supplied with
unit) for
exhaust
requirements.
Yes
No
Gas Models: Is
gas supply
insufficient?
Cycling off on
limit
thermostat?
No
Yes
Check main gas
line shut-off
valve. Open
partially closed
gas shut-off
valve or correct
low pressure.
Gas Models: Is
sensor contact
closing?
Yes
Adjust flame.
Refer to
Adjustments
section.
Momentarily
connect a
jumper wire
across
thermostat
Yes terminals. If
heater element
heats or burner
ignites when
jumper wire is
connected, refer
to next flowchart.
Replace sensor
Yes or adjust burner
flame (refer to
Adjustments
section).
No
No
Gas Models: Is
dryer properly
equipped for type
of gas used?
No
Refer to "Gas
Burner Conversion
Procedures"
supplied in gas
burner conversion
kit.
Is cycling
thermostat
inoperative?
Yes
Test thermostat
and replace if
inoperative.
Yes
Refer to wiring
diagram.
No
Yes
Is wiring
broken, loose
or incorrect?
SWD1698S
32
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
Dryer Troubleshooting
14. Dryer Heater Assembly or Burner Repeatedly Cycles Off On Limit
Thermostat
Dryer heater assembly or burner repeatedly
cycles off on limit thermostat.
Is external exhaust
system longer or
providing greater
restriction than
recommended?
Yes
Refer to
Installation
Instructions
(supplied with
unit) for
exhaust system
requirements.
Is there lint
or other
obstruction in
external
exhaust
system?
Yes
Disassemble
and clean
exhaust
system.
No
No
Is exhaust duct
made of plastic
or thin foil?
Yes
Replace with rigid
or semi-rigid metal
exhaust duct.
No
Is lint filter
clogged?
Yes
Clean lint
filter.
Is hinged
damper on
exhaust system
weather hood
not free to
open?
Free hinged
Yes damper or
replace
weather
hood.
No
No
Is there lint in
internal dryer
ductwork?
Yes
Disassemble
dryer ductwork
and clean.
Is limit
thermostat
cycling at too
low a
temperature?
Yes
Replace
thermostat.
No
No
Continued on
next page.
SWD1699S-a
802748
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
33
Dryer Troubleshooting
14. Dryer Heater Assembly or Burner Repeatedly Cycles Off On Limit
Thermostat (continued)
Continued from
previous page.
Is there an air leak
around loading door?
(Door not sealing due
to damaged seal or
inoperative door
catch)?
Yes Replace seal
or catch.
Is there an air
leak at front
panel seal?
Yes
Check and
replace seal if
necessary.
No
Yes
Is thermistor
inoperative?
Test
thermistor
and replace if
inoperative.
No
Is there an air
leak at blower
seal?
Yes
Check and
replace seal if
necessary.
No
Is there an air
leak at cylinder
seal(s)?
Yes
Check and
replace seal(s)
if necessary.
No
SWD1699S-b
34
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
Dryer Troubleshooting
15. Dryer Heater Assembly or Burner Does Not Shut Off
Dryer heater assembly or
burner does not shut off.
Is motor switch
inoperative?
(Must be in a
heat setting.)
Yes
Test switch and
replace if
inoperative.
No
Motor does
not stop?
Yes
Refer to Dryer
Motor Does Not
Stop paragraph.
No
Is wiring
incorrect?
Yes
Refer to wiring
diagram.
No
Has heater
assembly
shorted?
Yes
Remove heater
assembly and
check for short.
SWD1700S
802748
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
35
Dryer Troubleshooting
16. Clothes Do Not Dry in Dryer
Clothes do not dry in dryer.
Does heater
assembly not
heat or
burner not
ignite?
Yes
Refer to Dryer
Heating
Assembly Does
Not Heat or
Burner Does
Not Ignite
paragraph.
Is exhaust
system
improper or
inadequate?
Yes
No
No
Is there too
much water
in articles
being dried?
Does heater
assembly or
burner shut off
prematurely?
Yes
Yes
No
Is laundry
load too
small?
Remove
excess water.
Yes
Remove part of
load. A normal
washer load is a
normal dryer
load. Maximum
load: Dryer
cylinder one half
full of wet
clothes.
Add one or two
bath towels to
load.
Gas Models:
Is gas line
pressure too
high or too
low?
Yes
Yes
Yes
Check for
proper
installation.
Clean lint
filter.
No
36
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.
No
Is belt installed
improperly (low
RPM - correct
RPM is 52 ± 1)?
No
Is there
excessive
lint on lint
filter?
Yes
Refer to Dryer
Heater
Assembly or
Burner Shuts
Off Prematurely
paragraph.
No
No
Is laundry
load too
large?
Refer to
Installation
Instructions
(supplied with
unit) for exhaust
requirements.
SWD1701S
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
Dryer Troubleshooting
17. Clothes Are Too Hot When Removed From Dryer
Clothes are too hot when
removed from dryer.
Is exhaust
system
improper or
inadequate?
Yes
Refer to
Installation
Instructions
(supplied with unit)
for exhaust
requirements.
Add additional
cool-down time.
No
Were clothes
removed from
dryer before
cycle has
completed?
Yes
Allow the dryer to
complete the
cycle through the
cool-down to the
OFF position.
No
Is cycling
thermostat
inoperative?
Yes
Test cycling
thermostat and
replace if
inoperative.
No
Are seals
inoperative
(air leaks)?
No
Yes
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.
SWD1702S
802748
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
37
Dryer Troubleshooting
18. Excessive Chattering Or Vibrating Noise in Dryer
Excessive chattering or
vibrating noise in dryer.
Yes
Is idler spring
inoperative?
Remove lower access panel. Set
dryer to normal cycle and allow it
to heat to operating temperature.
If the belt vibrates as it rotates
around the cylinder, the idler
arm is making the noise. Replace
the idler spring.
No
Check blower fan
for missing or
cracked fan blades.
SWD1703S
38
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802748
Dryer Troubleshooting
19. Excessive Humming Or Whistling Noise in Dryer
Excessive humming or
whistling noise in dryer.
Is blower
housing
inoperative?
Yes
If the abnormal operating noise is
loudest at the vent exit, the
problem is originating from the
blower housing. Replace the
current housing and cover.
No
Check blower fan
for missing or
cracked fan blades.
SWD1704S
802748
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39
Section 5
NetMaster and MDC Troubleshooting
– Washer Control
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
40
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802748
NetMaster and MDC Troubleshooting – Washer Control
20. Error Code Listing
E:df
Drive failure.
This error code is generated by the motor control and
transmitted to the master control. Several conditions can cause
this code: motor unplugged, motor failure, tachometer circuit
open, inner basket locked up. This is a fatal error. Machine must
be unpowered to reset.
Serial communication error.
This error code occurs when the master control cannot
communicate with the motor control. The master control will try
to reset the motor control by powering it down. It will try
resetting three times before setting the error code. Common
causes: fuse blown on motor control board, wiring to motor
control incorrect. This is a fatal error.
Fill error.
This error code occurs if the pressure switch fails to open in 30
minutes in any fill/agitate cycle. This is a fatal error.
Door open indicator.
This error code occurs when the door is not closed at the start of
an active cycle. If the door is closed, check for wiring or door
switches.
Door open error.
This error code occurs if the control detects the door open and
door locked inputs high at the same time. You can get this error
if you jerk on the door when it is locked or as it is about to lock.
This is a fatal error.
Door lock error.
This error code occurs if the door does not lock in 15 seconds or
unlock in 3 minutes at the end of the cycle. This is a non-fatal
error. If the door locks or unlocks while E:dL is displayed, it will
clear the error condition. If the door is opened after failing to
lock, it will clear the display.
E:Ht
(Models
equipped
with
heater)
Heater error.
This error code occurs if it takes more than two hours to heat
water to the programmed temperature. The cycle will continue.
The code will clear when control exits End of Cycle mode.
OP
(Models
equipped
with
heater)
Open thermistor error.
This error code occurs if the thermistor circuit opens while
heating.
SH
(Models
equipped
with
heater)
Shorted thermistor error.
This error code occurs if the thermistor circuit is shorted while
heating.
E:SP
E:FL
door
E:do
E:dL
802748
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41
NetMaster and MDC Troubleshooting – Washer Control
21. Microwand Does Not Communicate With Washer Control – NetMaster
Models OnlyMicrowand Does Not Communicate With Control.
Attempt to communicate with the
electronic control from the Microwand.
Is there
acknowledgement of
any kind from the
control?
No
Aim the
Microwand closer
and try again.
Yes
Does the Microwand
prompt: Control
Mismatch error ?
Is there any control
response?
No
Yes
Yes
Make sure
Microwand
selection was for
the proper
machine type and
control generation
type.
Check the following:
- Microwand battery voltage
- Blockage of IR window on control
- Attachment of IR cup to
Microwand.
No
Does the electronic
control display "E:OF"
or "-C-"?
-C-
Communication
sequence checks
out properly.
E:OF
Has IR communication
been turned off?
Yes
Turn IR
communication on
(refer to
programming
manual).
No
Change electronic
control and repeat
procedure.
FLW296S
42
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802748
NetMaster and MDC Troubleshooting – Washer Control
22. Coins Ignored When Entered in Washer Coin Drop
Coins Ignored When Entered.
NetMaster Models: Start Coin Drop
Diagnostic Test. Refer
to programming manual.
MDC Models: Start Production Test
Cycle and advance to Coin Drop Test.
Does the count on
the display increment
properly after entering
coins?
Yes
Reset control to
ready mode.
No
Is "H7" connector
properly seated on the
control board?
No
Properly reseat
connection and
conduct diagnostic
test again.
Yes
From the coin drop, is
the 3-pin connector
properly plugged in?
Yes
Are the wires exiting the
coin drop optical sensor
cracked or broken?
No
Properly reseat
connection and
conduct diagnostic
test again.
Yes
No
Replace the
coin drop.
Replace electronic
control.
FLW1715S
802748
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43
NetMaster and MDC Troubleshooting – Washer Control
23. No Visible Display on Washer Control
Control Has No Visible Display
The electronic control has no
LED or VFD functioning on
the control board.
Is the power cord
plugged in?
No
Plug unit into an
outlet and check
for proper supply
voltage.
Yes
1
2
(1)
Is there 24 Volt AC
across terminals "H1-1"
and "H1-3" control
board?
3
(2)
No
Yes
Is there 24 Volt
AC at the output side of
the transformer?
Yes
Make sure "H1"
connector is
seated properly.
Replace control.
Correct wiring
between
transformer and
control board.
(3)
No
Is there
220-240 VAC
(or 120 VAC)* to the
primary of the
transformer?
No
Check wiring to
the primary of the
transformer.
Yes
Replace
transformer.
FLW1695S
*Refer to machine serial plate for correct voltage.
44
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802748
NetMaster and MDC Troubleshooting – Washer Control
No Visible Display on Washer Control
3
220-240 VAC (or 120 VAC) 50/60 Hz (SEE MACHINE SERIAL PLATE)
2
1
(Models
with
220240
VAC)
802748
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45
NetMaster and MDC Troubleshooting – Washer Control
24. Washer Will Not Start – “door” Displayed (Door must be closed and
attempting to lock)
Washer Will Not Start. No Door Lock.
Washer will not
start. Vend
satisfied.
1
(1)
Is there
220-240 VAC
(or 120 VAC)*
across "H4-5" and "H6-5"
on the control
board?
Yes
Replace the
electronic
Control Board.
Yes
Replace the Door
Lock Assembly.
No
2
(2)
Is there
220-240 VAC (or
120 VAC)* to the blk
input wire to the door
switch on the lock
assembly?
No
Correct wiring
to the
door switch.
FLW1767S
*Refer to machine serial plate for correct voltage.
46
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802748
NetMaster and MDC Troubleshooting – Washer Control
Washer Will Not Start – “door” Displayed
220-240 VAC (or 120 VAC) 50/60 Hz (SEE MACHINE SERIAL PLATE)
2
1
(Models
with
220240
VAC)
802748
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47
NetMaster and MDC Troubleshooting – Washer Control
25. Washer Will Not Start – “E:dL” on Display
Washer will
not start.
Vend satisfied.
1
(1)
Is there
220-240 VAC (or
120 VAC)* across terminals
"H4-4" and "H6-5" on the
electronic control?
No
Replace the electronic
control board.
Yes
Is door catch
properly adjusted?
Refer to Adjustments
section.
No
Adjust catch and retest.
Yes
Replace the
door lock
assembly.
*Refer to machine serial plate for correct voltage.
FLW1773S
48
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802748
NetMaster and MDC Troubleshooting – Washer Control
Washer Will Not Start – “E:dL” on Display
220-240 VAC (or 120 VAC) 50/60 Hz (SEE MACHINE SERIAL PLATE)
1
(Models
with
220240
VAC)
802748
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49
NetMaster and MDC Troubleshooting – Washer Control
26. Washer Will Not Fill (Machine empty, no “E:SP” on display)
Washer Will Not Fill
(Machine empty, No E:SP on display)
Refer to
Washer Will Not Start E:dL on display
section
No
Is the door
locked?
Yes
1
(1)
Is there
220-240 VAC (or
120 VAC)* across terminals
"H1-1" and "H9-4" on
the motor
control?
No
Correct wiring from
pressure switch or
replace pressure
switch.
Yes
2
(2)
Is there
220-240 VAC
(or 120 VAC)* across
terminals "H9-6" to "H1-1"
(hot) and "H9-3"
to "H1-1"
(cold)?
No
Replace motor
control board.
No
Replace motor
control.
Yes
3
(3)
Is there
220-240 VAC
(or 120 VAC)* across
mixing valve
solenoid(s)?
Yes
Replace mixing
valve.
*Refer to machine serial plate for correct voltage.
FLW1698S
50
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802748
NetMaster and MDC Troubleshooting – Washer Control
Washer Will Not Fill (Machine empty, no “E:SP” on display)
220-240 VAC (or 120 VAC) 50/60 Hz (SEE MACHINE SERIAL PLATE)
(Models
with
220240
VAC)
3
1
2
802748
2
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51
NetMaster and MDC Troubleshooting – Washer Control
27. Washer Overflows
Washer Overflows
1
(1)
Is there
220-240 VAC
(or 120 VAC)*
to the over level terminal
on pressure switch
to neutral?
No
Replace
inoperative
pressure switch.
Yes
2
(2)
Is there
220-240 VAC
(or 120 VAC)*
across the coil of either
the hot or cold water
solenoid?
Yes
Check for
improper wiring
and replace
inoperative
pressure switch
if necessary.
No
Replace
inoperative water
valve.
*Refer to machine serial plate for correct voltage.
FLW1699S
52
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802748
NetMaster and MDC Troubleshooting – Washer Control
Washer Overflows
220-240 VAC (or 120 VAC) 50/60 Hz (SEE MACHINE SERIAL PLATE)
(Models
with
220240
VAC)
1
2
2
802748
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53
NetMaster and MDC Troubleshooting – Washer Control
28. Washer Pump or Drain Valve Does Not Operate
NOTE: Check at beginning of spin/drain portion of cycle.
Pump Does Not Operate
(1)
Is there
220-240 VAC
(or 120 VAC)* across the
wht/blk and the white wire
going to the pump or
drain valve?
Yes
If the pump or
drain valve does not
operate check for
blockage. Replace
if necessary.
No
(2)
Is there
220-240 VAC
(or 120 VAC)*
across terminals
"H6-2" and
"H6-5?"
Yes
Correct wiring
between control
and pump or
drain valve.
No
Replace control
assembly.
*Refer to machine serial plate for correct voltage.
FLW1700S
54
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802748
NetMaster and MDC Troubleshooting – Washer Control
Washer Pump or Drain Valve Does Not Operate
220-240 VAC (or 120 VAC) 50/60 Hz (SEE MACHINE SERIAL PLATE)
(Models
with
220240
VAC)
1
2
802748
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55
NetMaster and MDC Troubleshooting – Washer Control
29. Serial Communication Error (“E:SP” on washer display)
SERIAL COMMUNICATION ERROR (E:SP on display
1
(1)
Is the fuse loose or
blown on the motor
control board?
Yes
Tighten fuse
holder and/or
replace fuse.
No
2
(2)
Restart
machine and
check voltage: Is
there 220-240 VAC (or
120 VAC)* across terminals
"H1-1" and "H1-3"
on motor
control?**
3
No
(3)
Restart
machine and
check voltage: Is
there 220-240 VAC (or
120 VAC)* across terminals
"H6-5" and "H6-6"
on the electronic
control?**
Yes
No
Replace
electronic
control.
Yes
Correct wiring from
electronic control to
motor control.
4
(4)
Is there
continuity through
each wire of the harness
from H2 on the electronic
control to H7 on the
motor control?
Yes
Change the
motor control.
No
Change the
harness.
*Refer to machine serial plate for correct voltage.
**NOTE: Machine must be restarted to check voltage.
Voltage will be intermittently present during first 15
seconds until E:SP is displayed.
56
FLW1701S
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
NetMaster and MDC Troubleshooting – Washer Control
Serial Communication Error (“E:SP” on washer display)
220-240 VAC (or 120 VAC) 50/60 Hz (SEE MACHINE SERIAL PLATE)
(Models
with
220240
VAC)
3
4
1
2
802748
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57
NetMaster and MDC Troubleshooting – Washer Control
30. Washer Motor Does Not Run (“E:df” on display)
Motor does not run (E:df on display)
1
(1)
Is there
continuity between
motor terminals?
Refer to values
at right.
Yes
Check motor
plug or replace
motor control.
Motor Resistance Values:
Tach. Circuit: Approx. 115 ohms (Terminals 4-5)
Windings: Approx. 4 - 5 ohms (Terminals 1-2, 1-3, 2-3)
No
Replace motor .
FLW1702S
58
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
NetMaster and MDC Troubleshooting – Washer Control
Washer Motor Does Not Run (“E:df” on display)
220-240 VAC (or 120 VAC) 50/60 Hz (SEE MACHINE SERIAL PLATE)
(Models
with
220240
VAC)
1
802748
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59
NetMaster and MDC Troubleshooting – Washer Control
31. Washer Will Not Heat (“OP” or “SH” displayed)
(Models equipped with heater)
1
(1)
Measure
resistance at
connector "H3" on
electronic control. Is resistance
value between
500 and 35,000
ohms?
Yes
Replace electronic
control.
No
2
(2)
Measure
resistance at
thermistor. Is resistance
value between
500 and 35,000
ohms?
No
Replace thermistor/
heater assembly.
Yes
Check wiring
to thermistor.
FLW1705S
60
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
NetMaster and MDC Troubleshooting – Washer Control
Washer Will Not Heat (“OP” or “SH” displayed)
2
1
802748
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61
NetMaster and MDC Troubleshooting – Washer Control
32. Washer Will Not Heat (Models equipped with heater)
Is the
pressure switch
satisfied?
No
The heater will not
come on until the
pressure switch
is satisfied.
Yes
Are there
4 "dashes" on
display indicating
the machine
is heating?
No
Verify water temperature
is less than selected
cycle temperature
set point.
Yes
1
(1)
Is there
230 Volts across
the heaters?
Yes
Replace
heater(s).
No
2
(2)
Is there
230 volts across
terminals A1 - A2 on
the heat relay?
No
Correct wiring between
the heat relay coil and
the electronic control
or replace board.
Yes
Check wiring or
replace heat relay.
FLW1703S
62
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802748
NetMaster and MDC Troubleshooting – Washer Control
Washer Will Not Heat (Models equipped with heater)
2
1
1
1
802748
1
1
1
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
63
Section 6
NetMaster Troubleshooting – Dryer Control
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
33. Error Code Listing
Display
Description
Cause/ Corrective Action
EI:00
General Communications Error
Communication problem. Re-aim Micro-wand and try again.
EI:01
Bad Transmission
Communication problem. Re-aim Micro-wand and try again.
EI:02
Device Timeout
Communication problem. Re-aim Micro-wand and try again.
EI:03
Invalid Command Code
Wrong machine type. Before downloading, ensure data is for
current machine type.
EI:04
Expecting Upload Request
Communication problem. Re-aim Micro-wand and try again.
EI:05
Invalid or Out-of-Range Data
Wrong machine type. Before downloading, ensure data is for
current machine type.
EI:06
Invalid Data Code
Wrong machine type. Before downloading, ensure data is for
current machine type.
EI:07
Error Writing to RTC
Control failure. Control may need to be replaced.
EI:08
Error Writing to EEPROM
Control failure. Control may need to be replaced.
EI:09
CRC-16 Error
Communication problem. Re-aim Micro-wand and try again.
EI:0A
Invalid Machine Type
Wrong machine type. Before downloading, ensure data is for
current machine type.
EI:0F
Invalid Wakeup or IR Disabled
Communication problem or IR is disabled. Manually enable IR
on control/Re-aim Micro-wand and try again.
EC:00
General Communication Error
Communication problem. Try card again.
EC:02
Timeout Error
Communication problem. Try card again.
EC:03
Invalid Command Code
Wrong machine type. Before downloading, ensure data is for
current machine type.
EC:05
Invalid or Out-of-Range Data
Wrong machine type. Before downloading, ensure data is for
current machine type.
EC:06
Invalid Data Code
Wrong machine type. Before downloading, ensure data is for
current machine type.
EC:09
Corrupted Data Error
Communication error. Try card again.
EC:0A
Invalid Machine Type
Wrong machine type. Before downloading, ensure data is for
current machine type.
64
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
NetMaster Troubleshooting – Dryer Control
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
Display
Description
Cause/ Corrective Action
EC:19
No Card Reader Communication
Communication problem. Power down, power up and try
again. If error persists, control or reader is bad.
EC:20
Unreadable Card
Bad card/ dirty contact. Clean chip on card or card reader
contacts. Try card again. If error persists, card may be bad.
EC:21
Security ID Mismatch
Wrong card. Use card with correct security code.
EC:22
Site Code Mismatch
Wrong card. Use card with correct site code.
EC:23
Card Maximum Value Exceeded
Value on card over max. Use a card which does not exceed
maximum value.
EC:24
Insufficient Memory on Card
Card memory is full. Download card contents to PC and clear
card for re-use.
EC:25
Card Reader Malfunction
Bad Card Reader. Card Reader may need to be replaced.
EC:26
Card Write Error
Try card again. If error persists, card may be bad.
EC:27
Diagnostic Test Card Write Failure Bad Card Reader. Card Reader may need to be replaced.
EC:28
Diagnostic Test Card Read Failure Bad Card Reader. Card Reader may need to be replaced.
EC:29
Diagnostic Test Memory Test
Failure
Bad Card Reader. Card Reader may need to be replaced.
EC:2A
Diagnostic Test Card Interface
Failure
Bad Card Reader. Card Reader may need to be replaced.
EC:2b
Diagnostic Test Flash Checksum
Failure
Bad Card Reader. Card Reader may need to be replaced.
EC:2C
Bad Biberon or Non-biberon
Device
Bad Card Reader. Card Reader may need to be replaced.
EC:2d
Firmware Update Failed,
S/W (Software) Intact
Firmware load failed. Card Reader may need to be replaced.
EC:2E
Firmware Update Failed, S/W Not Bad firmware in reader. Card Reader may need to be replaced.
Intact
EC:2F
Firmware Updated, S/W Not Intact Bad firmware in reader. Card Reader may need to be replaced.
EC:30
Timeout Error
EC:31
Hotlisted Card Inserted Into Reader Card hotlisted. Control will destroy card.
EC:50
Loyalty Purse Read Error
Try card again. If error persists, card may be bad.
EC:56
Loyalty Purse Write Error
Try card again. If error persists, card may be bad.
802748
Card Reader may need to be replaced.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
65
NetMaster Troubleshooting – Dryer Control
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
Display
Description
Cause/ Corrective Action
Right most Network Communication Error
DP (decimal
point) Lit
Communication problem. Wait for 1.5 minutes for error to
clear. If it doesn’t, power-down and power-up the machine. If
error persists, control or Network Board may need to be
replaced.
Err
Coin Error
Invalid coin pulse.
Alrm
Breakin Alarm Error
Service door or coin vault switches.
OFF
Breakin Alarm Shutdown Error
Service door or coin vault switches.
E:OP
Open Thermistor Error
Physical “open” in thermistor circuit. Possible causes are
thermistor, wiring between control and thermistor, or control.
E:SH
Shorted Thermistor Error
“Short” in thermistor circuit. Possible causes are shorted
thermistor, short in wiring between control and thermistor, or
control.
E:00
General Error
Re-aim Micro-wand and try again.
E:01
Proximity Error
Micro-wand is improperly aimed at infrared communicator
(angle or distance). Re-aim Micro-wand and try again.
E:02
IR Communication Disconnection
Micro-wand removed before communication complete. Re-aim
micro-wand and try again.
E:05
Invalid Value Communication
Invalid code downloaded from Micro-wand to Electronic
Control. Before downloading, ensure data is for current
machine type.
E:07
Inoperative Control
Replace control.
E:08
Inoperative Control
Replace control.
E:09
Proximity Error
Micro-wand is improperly aimed at infrared communicator
(angle or distance). Re-aim Micro-wand and try again.
EI:0A
Proximity Error
Micro-wand is improperly aimed at infrared communicator
(angle or distance). Re-aim Micro-wand and try again.
E:0B
IR Communication Disconnection
Micro-wand removed before communication complete. Re-aim
Micro-wand and try again.
E:0C
IR Communication Disconnection
Micro-wand removed before communication complete. Re-aim
Micro-wand and try again.
E:0F
IR Communicator Programmed Off Reprogram infrared communicator on. Manually enable IR on
control/Re-aim micro-wand and try again.
Err
Coin Error
66
Inoperative coin sensor. Check coin drop area and remove
obstructions. Possible tampering. Evaluate security procedures.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
NetMaster Troubleshooting – Dryer Control
34. Coins Ignored When Entered in Dryer Coin Drop
Coins Ignored When Entered
Dwg. 2
Start coin drop
diagnostic test.
Does the
display on the
electronic control
increment properly?
YES
Exit diagnostic
testing and reset
control.
NO
NO
Is connector H5 on the
control firmly seated in
its receptacle?
Reconnect
and run
diagnostic test
again.
YES
Is the
3 pin connector
between the coin drop
and the control
connected
correctly?
NO
YES
Are wires exiting coin
drop optical sensor
cracked or broken?
NO
Replace
electronic
control.
YES
Replace coin drop.
If problem still exists
replace the control.
DRY353S
802748
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67
NetMaster Troubleshooting – Dryer Control
35. No IR Communication with Dryer Control
No IR Communication
Dwg. 3
Attempt
communication
with microwand
to the control.
Check the following:
Is there a response
of any kind from the
electronic control?
No
Bring microwand
closer to the IR
window, aim
properly and try
communication
again.
Yes
Does the electronic
control display “E:OF”
or “-C-”?
Does the control
respond?
No
Yes
“-C-”
- Low battery on
microwand
- Is the IR window
covered or blocked
on the control?
-If needed replace the
electronic control.
- Is the IR cup properly
attached to the
microwand?
Communication
sequence checks
out.
“E:OF”
Check the following:
-Was IR communication
disabled by
manual programming.
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NetMaster Troubleshooting – Dryer Control
36. No Display on Dryer Control
No Display
Dwg. 1
1
(1)
Are there 24 volts AC
across terminals H1-3
and H1-1 on the
control?
YES
Replace
the control.
NO
2
(2)
Are there 24 Volts AC
across the secondary
of the transformer?
YES
Correct wiring
between the
transformer and
the control.
NO
NOTE: Refer to wiring
diagram for primary
voltage.
Correct wiring to the
primary of the
Are there 120 or 240
NO
transformer. Make
volts AC to the primary
sure the machine is
of the transformer?
plugged in and
power is on.
3
(3)
YES
Replace the
transformer.
DRY351S
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NetMaster Troubleshooting – Dryer Control
No Display on Dryer Control
3
2
1
DRY352S_
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NetMaster Troubleshooting – Dryer Control
37. Dryer Door Open
Door Open
Dwg. 4
NOTE: Conduct all tests
with the door closed.
1
(1)
Is
there voltage across
terminals H2-1 and
H2-6?
YES
Replace
electronic
control.
NO
2
(2)
Is
there voltage on
the N.O. terminal of
the door switch to a
neutral wire?
YES
Correct wiring
between door
switch and
control. Also
check neutral
supply to control.
NO
3
(3)
Is
there voltage on
the COM teminal of
the door switch to a
neutral wire?
YES
Check operation
of the door
switch.
Replace if
necessary.
NO
Correct wiring to
door switch.
DRY355S
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NetMaster Troubleshooting – Dryer Control
Dryer Door Open
3
2
1
DRY356S_
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NetMaster Troubleshooting – Dryer Control
38. Dryer Motor Will Not Start
Motor Will Not Start
Dwg. 5
NOTE: Checks to be made only if
motor does not start and door
open indicator is not on. If door
open indicator light is on please
refer to door open trouble
shooting.
1
(1)
Is there voltage across
terminals 5 and 4 of
the motor?
YES
Replace the
motor.
YES
Correct the
wiring to
the motor.
YES
Replace the
electronic
control.
NO
2
(2)
Is there voltage across
H2-4 and H2-6 on the
control?
NO
3
(3)
Is there voltage across
H2-1 and H2-6 on the
control?
NO
Refer to
door open
troubleshooting.
DRY357S
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NetMaster Troubleshooting – Dryer Control
Dryer Motor Will Not Start
3
2
1
DRY358S_
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NetMaster Troubleshooting – Dryer Control
39. No Heat (Electric Dryer Models)
Dwg. 6
1
(1)
Is there voltage across
the leads to the heating
element?
7
(7)
YES
Replace heating
element.
Is there voltage on
FS-2 on the control
board to L2?
YES
Make sure unit is
calling for heat.
Check operation
of thermistor.
Replace the
control.
NO
NO
2
(2)
Is there
voltage from the
output side of the
limit thermostat
to L2?
8
(8)
YES
Check and
replace wiring
between
components.
Replace element.
Check for
proper operation
of centrifugal switch on
motor. Does it operate
properly?
YES
Correct wiring
between motor
and element &
motor and L2.
NO
NO
(3)
3
Is there
voltage to the
input side of the limit
thermostat to L2?
YES
Check for proper
air flow and
operation of
limit thermostat.
Replace motor.
NO
4
(4)
Is there
voltage to the
output side of the
thermo fuse on the
element?
YES
NO
5
(5)
Is there voltage to the
input side of the
thermal fuse?
YES
Replace thermo
fuse.
NO
(6)
6
Is there voltage on
FS-1 on the control to
L2?
YES
Correct wiring
between control
and thermo fuse
on the
element.
DRY359S
NO
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NetMaster Troubleshooting – Dryer Control
No Heat (Electric Dryer Models)
7
6
5
4
3
2
1
8
DRY360S_
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NetMaster Troubleshooting – Dryer Control
40. No Heat (Gas Dryer Models)
(1)
1
Is there
voltage across
the pink wire of the gas
valve to terminal 2 on
the motor?
YES
No Heat Gas
Dwg. 7
Refer to
NOTE.
Replace either
the gas valve,
coils of gas valve
or the sensor.
NO
2
(2)
Is there
voltage at the
output of the limit
thermostat referenced
to neutral?
YES
Correct wiring
between
limit thermostat
and gas valve.
NO
NOTE:
When calling for heat the holding coil, the booster coil
and the igniter will be energized. Once the sensor
senses that the igniter is hot enough for ignition, it will
open. At this time the holding coil and the secondary
coil will be energized allowing gas to flow. If the flame
cycles on and off check for proper operation of sensor.
If gas never ignites, check for problems with the coil
and check to see if the sensor opens. If coils are good
and the sensor opens with the glow bar operational
and there is no ignition/gas flow, replace the gas valve.
(3)
3
Is there
voltage to the
input of the limit
thermostat referenced
to neutral?
YES
Check for proper
air flow making
sure venting is
not blocked and
lint screen is clean.
Replace limit
thermostat.
NO
4
(4)
Is there
voltage across
FS-1 and H2-3
(neutral) on the
control?
YES
Correct wiring
between FS-1 and
limit thermostat.
NO
5
(5)
Is there
voltage across
FS-2 and H2-3
(neutral) on the
control?
YES
Make sure unit
is calling for heat.
Check operation
of thermistor.
Replace control.
NO
Refer to Door Open troubleshooting.
(6)
6
Is there voltage across
terminal 1 of the motor
and L1?
YES
Check for proper
operation of
centrifugal on the
motor. Replace
motor if necessary.
NO
Correct wiring
to the motor.
DRY361S
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77
NetMaster Troubleshooting – Dryer Control
No Heat (Gas Dryer Models)
5
4
3
2
1
6
DRY362S_
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Section 7
MDC Troubleshooting – Dryer Control
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
41. Error Code Listing
OP
Open Thermistor Error.
This error code indicates a physical “open” in the thermistor
circuit. Possible causes are: 1) thermistor, 2) wiring between
control and thermistor, or 3) control.
SH
Shorted Thermistor Error
This error code indicates a “short” in the thermistor circuit.
Possible causes are: 1) shorted thermistor, 2) a short in the
wiring between control and thermistor, or 3) control.
EC:19
(Card Reader
Machines)
No Card Reader
Communication
This error code indicates there is no card reader communication.
The control and the reader cannot communicate. Check reader,
control and harness.
NOTE: For all other Card Reader errors, consult the Card
Reader manufacturer.
802748
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79
MDC Troubleshooting – Dryer Control
42. Coins Ignored When Entered in Dryer Coin Drop
Coins Ignored When Entered
Dwg. 2
Start coin drop
diagnostic test.
Refer to Production
Test Cycle section of
Programming manual.
Does the
display on the
electronic control
increment
properly?
YES
Exit diagnostic
testing and reset
control (prompting
for vend price).
NO
Is
connector H5 on the
control firmly seated in
its receptacle?
NO
Reconnect and
run diagnostic
test again.
YES
Is the
3 pin connector
between the coin drop
and the control
connected
correctly?
NO
YES
Are
wires exiting
coin drop optical
sensor cracked
or broken?
NO
Replace
electronic
control.
YES
Replace coin drop.
If problem still exists
replace the control.
DRY353_S
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MDC Troubleshooting – Dryer Control
Notes
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81
MDC Troubleshooting – Dryer Control
43. No Visible Display on Dryer Control
No Display
Dwg. 1
1
Is
there 24 volts AC
across terminals H1-3
and H1-1 on the
control?
YES
Replace the
control.
NO
(2)
2
Is
there 24 Volts AC
across the secondary
of the transformer?
YES
Correct wiring
between the
transformer and
the control.
NO
NOTE: Refer to wiring
diagram for primary
voltage.
Is
Correct wiring to the
there 120 (U.S.)
primary of the
or 240 (overseas) volts
NO
transformer. Make
AC to the primary of
sure the machine is
the transformer?
plugged in and
power is on.
3
(3)
YES
Replace the
transformer.
DRY351_S
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802748
MDC Troubleshooting – Dryer Control
No Visible Display on Dryer Control
3
2
1
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83
MDC Troubleshooting – Dryer Control
44. Dryer Door Open
Door Open
Dwg. 4
NOTE: Conduct all tests
with the door closed.
1
(1)
Is
there voltage across
terminals H2-1 and
H2-6?
YES
Replace
electronic
control.
NO
2
(2)
Is
there voltage on
the N.O. terminal of
the door switch to a
neutral wire?
YES
Correct wiring
between door
switch and
control. Also
check neutral
supply to control.
NO
3
(3)
Is
there voltage on
the COM teminal of
the door switch to a
neutral wire?
YES
Check operation
of the door
switch.
Replace if
necessary.
NO
Correct wiring to
door switch.
DRY355S
84
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802748
MDC Troubleshooting – Dryer Control
Dryer Door Open
3
2
1
802748
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85
MDC Troubleshooting – Dryer Control
45. Dryer Motor Will Not Start
Motor Will Not Start
Dwg. 5
NOTE: Checks to be made only if
motor does not start and door
open indicator is not on. If door
open indicator light is on please
refer to door open trouble
shooting.
1
(1)
Is there voltage across
terminals 5 and 4 of
the motor?
YES
Replace the
motor.
YES
Correct the
wiring to
the motor.
YES
Replace the
electronic
control.
NO
2
(2)
Is there voltage across
H2-4 and H2-6 on the
control?
NO
3
(3)
Is there voltage across
H2-1 and H2-6 on the
control?
NO
Refer to
door open
troubleshooting.
DRY357S
86
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802748
MDC Troubleshooting – Dryer Control
Dryer Motor Will Not Start
3
2
1
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87
MDC Troubleshooting – Dryer Control
46. No Heat (Electric Dryer Models)
Dwg. 6
1
(1)
Is there voltage across
the leads to the heating
element?
7
(7)
YES
Replace heating
element.
Is there voltage on
FS-2 on the control
board to L2?
YES
Make sure unit is
calling for heat.
Check operation
of thermistor.
Replace the
control.
NO
NO
2
(2)
Is there
voltage from the
output side of the
limit thermostat
to L2?
8
(8)
YES
Check and
replace wiring
between
components.
Replace element.
Check for
proper operation
of centrifugal switch on
motor. Does it operate
properly?
YES
Correct wiring
between motor
and element &
motor and L2.
NO
NO
(3)
3
Is there
voltage to the
input side of the limit
thermostat to L2?
YES
Check for proper
air flow and
operation of
limit thermostat.
Replace motor.
NO
4
(4)
Is there
voltage to the
output side of the
thermo fuse on the
element?
YES
NO
5
(5)
Is there voltage to the
input side of the
thermal fuse?
YES
Replace thermo
fuse.
NO
(6)
6
Is there voltage on
FS-1 on the control to
L2?
YES
Correct wiring
between control
and thermo fuse
on the
element.
DRY359S
NO
88
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802748
MDC Troubleshooting – Dryer Control
No Heat (Electric Dryer Models)
7
6
5
4
3
2
1
8
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89
MDC Troubleshooting – Dryer Control
47. No Heat (Gas Dryer Models)
1
(1)
Is there
voltage across
the pink wire of the gas
valve to terminal 2 on
the motor?
YES
Refer to
NOTE.
Replace either the
gas valve, coils of
gas valve or the
sensor.
NO
2
(2)
Is there
voltage at the
output of the limit
thermostat referenced
to neutral?
YES
Correct wiring
between
limit thermostat
and gas valve.
NO
3
(3)
Is there
voltage to the
input of the limit
thermostat referenced
to neutral?
YES
Check for proper
air flow making
sure venting is
not blocked and
lint screen is clean.
Replace limit
thermostat.
NOTE:
When calling for heat the holding coil, the booster coil
and the igniter will be energized. Once the sensor
senses that the igniter is hot enough for ignition, it will
open. At this time the holding coil and the secondary
coil will be energized allowing gas to flow. If the flame
cycles on and off check for proper operation of sensor.
If gas never ignites, check for problems with the coil
and check to see if the sensor opens. If coils are good
and the sensor opens with the glow bar operational
and there is no ignition/gas flow, replace the gas valve.
NO
4
(4)
Is there
voltage across
FS-1 and H2-3
(neutral) on the
control?
YES
Correct wiring
between FS-1 and
limit thermostat.
NO
5
(5)
Is there
voltage across
FS-2 and H2-3
(neutral) on the
control?
YES
Make sure unit
is calling for heat.
Check operation
of thermistor.
Replace control.
NO
Refer to Door Open troubleshooting.
6
(6)
Is there voltage across
terminal 1 of the motor
and L1?
YES
Check for proper
operation of
centrifugal on the
motor. Replace
motor if necessary.
NO
Correct wiring
to the motor.
90
DRY361_S
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
MDC Troubleshooting – Dryer Control
No Heat (Gas Dryer Models)
(208 VAC or 240 VAC/50 Hertz – Refer to machine nameplate)
5
4
3
2
1
6
802748
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91
Section 8
Adjustments
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
IMPORTANT: When reference is made to
directions (right or left) in this manual, it is from
operator’s position facing front of washer.
48. Cabinet Leveling Legs
a. Place unit in position on a solid, sturdy and
level floor. Installing the unit on any type of
carpeting, soft tile, a platform or other weakly
supported structures is not recommended.
b. Place a level on the cabinet top and check if
unit is level from side to side and front to
back.
CAUTION
Use of the dispenser drawer or washer door
as a handle in the transportation of the
washer may cause damage to the dispenser
or door.
W185
f. Place rubber feet on all four leveling legs.
Refer to Figure 13.
g. Verify unit doesn’t rock.
Level
NOTE: Level must be on a raised portion of top
panel. Refer to Figure 13.
c. If unit is not level, tilt unit to access front and
rear leveling legs. For easier access to
leveling legs, prop up unit with wooden
block.
d. Loosen locknuts and adjust the leveling legs
until the unit is level from side to side and
front to back (using a level). Make sure unit
does not rock. Refer to Figure 13.
e. Tighten the locknuts securely against the
washer base. If the locknuts are not tight,
washer will move out of position during
operation.
Washer
Base
Locknut
Leveling
Leg
Rubber
Foot
CAUTION
DO NOT slide washer across floor if the
leveling legs have been extended, as legs
and base could become damaged.
SWD796N
SW
Figure 13
W248
92
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802748
Adjustments
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
49. Washer Loading Door
a. Open loading door.
b. The loading door can be adjusted up or down
somewhat by loosening screws holding door
hinge to front panel, then raising or lowering
door before retightening screws. Refer to
Figure 14.
Hinge
Loading
Door
Screw
FLW1771S
Figure 14
802748
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93
Adjustments
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
50. Washer Motor Belt Tension
c. Pull down on motor to increase belt tension.
Use a Burroughs belt gauge to obtain proper
tension. Proper belt tension is obtained when
belt can be deflected approximately 1/4 inch
(6.35 mm) from normal position when
moderate pressure 50 to 60 pounds (22.68 to
27.22 Kg) is applied to a point midway
between pulleys. Refer to Figure 15.
d. After proper belt tension has been obtained,
tighten belt adjusting bolts firmly, then
tighten pivot bolts. Refer to Figure 15.
NOTE: Belt adjustment procedures are done
through front of washer, however, as an option,
washer can be moved from its location and belt
adjustment can be done through lower access panel
opening on rear panel.
a. While supporting lower front access panel,
remove two screws from bottom edge of
access panel and remove panel.
b. Working through the access door opening,
place a locking pliers on the metal rod and
loosen the two adjusting bolts. Refer to
Figure 15. Repeat procedure to loosen the two
pivot bolts. Refer to Figure 15.
Inner
Basket
Pulley
Pivot
Bolt
Adjusting
Bolt
1/4 Inch
Motor
Mounting
Bracket
Motor
Pulley
Pivot
Bolt
Wire
Harness
Belt
Metal
Rod
SWD1688S
Adjusting
Bolt
Figure 15
94
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802748
Adjustments
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
51. Washer Door Catch
g. Visually check that the door catch properly
engages the funnel of the door latch/switch
assembly. Refer to Figure 17.
h. Recheck the alignment in Step “f”. Adjust if
needed.
i. Torque the two nuts to approximately 20 inch
pounds (2.25 Nm).
j. Reinstall outer door bezel by aligning outer
bezel tabs with cut aways on inner bezel and
sliding outer bezel into position. Refer to
Figure 16.
k. Replace 11 screws holding outer door bezel to
inner door bezel.
NOTE: When repairing a broken or inoperative
No. 802803 Door Catch, proceed as follows:
a. Open loading door.
b. Remove 11 T-20 Torx head screws holding
outer door bezel to inner door bezel. Refer to
Figure 16.
c. Pull hinge side of outer bezel away from door
and slide forward. Refer to Figure 16.
d. Remove two screws and nuts holding door
catch to door and remove door catch.
e. Install new door catch and tighten screws and
nuts to the point of being snug.
f. Adjust door catch so the outside edge is
aligned with the edge of the lock. Refer to
Figure 17.
IMPORTANT: Do not overtighten screws or bezel
holes will strip.
Outer Bezel
Tab
Inner Bezel
Cut Away
FLW1777S
Figure 16
802748
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95
Adjustments
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
Funnel
Door
Catch
Door
Lock
Alignment of
These Two Edges
802803
Catch
H250SE3B
SHOWN CLOSED
Figure 17
96
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
Adjustments
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
52. Shipping Braces
All stacked washer/dryers, when shipped from
the factory are equipped with two factoryinstalled shipping supports. DO NOT remove this
shipping material until after machine is placed in
its final installed position. Refer to Figure 18.
damage to the shock absorbers and will VOID the
product warranty.
NOTE: Shipping supports MUST be kept for
future re-positioning or moving of the machine.
IMPORTANT: DO NOT tip or move washer once
these supports have been removed. Removal of
supports prior to final installation may cause
Shock
Absorber
Shipping
Support
Shock
Absorber
Shipping
Support
Shipping
Bracket
FLW821S
Figure 18
802748
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97
Adjustments
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
53. Burner Flame (Gas Models)
a. While supporting the access panel, remove
two screws from bottom edge of access panel.
b. Gently lower the access panel to disengage
locators from bottom edge of front panel.
c. Add coins or card to satisfy vend.
d. Close the loading door. Start the dryer in a
heat setting (refer to Operating Instructions
supplied with the dryer). The dryer will start,
the igniter will glow red, and the main burner
will ignite.
e. Allow the dryer to operate for approximately
five minutes, then loosen the air shutter
lockscrew. Refer to Figure 19.
f. Turn the air shutter to the left to get a
luminous yellow-tipped flame, then turn it
back slowly to the right to obtain a steady blue
flame.
g. After proper flame is obtained, tighten air
shutter lockscrew firmly. Refer to Figure 19.
h. Reinstall access panel and screws.
WARNING
To reduce the risk of fire or serious injury,
the access panel must be in place during
normal operation.
W262
NOTE: After the dryer has operated for
approximately three minutes, exhaust air or
exhaust pipe should be warm.
Air Shutter
Lockscrew
Shut-Off Valve
Handle
1/8 Inch Pipe Plug
(For checking manifold pressure)
Air
Shutter
D265SE3A
Figure 19
98
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802748
Adjustments
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
54. Cleaning Non-Electronic Coin
Drop
g. Remove coin return from coin drop frame.
Refer to Figure 21.
a. Disconnect electrical power to machine and
drop.
b. Remove coin drop from machine.
c. If lint is preventing coins from rolling through
coin drop, blow compressed air through coin
entry and along the side of the coin drop.
Refer to Figure 20.
Cotter
Pin
Coin
Return
Metal
Clip
Coin Drop
Frame
DRY4B
Figure 21
Compressed
Air
DRY3B
h. Check coin path in coin drop for lint and
residue. If lint or light residues are present,
use a cotton swab to remove. If heavy residue
is present, it may be necessary to first scrape
off excessive residue and then use a cotton
swab dipped in water or isopropyl alcohol
(rubbing alcohol) to remove remainder of
residue. Refer to Figure 22.
Figure 20
Cotton
Swab
d. Insert a coin through the coin drop. If coin
does not roll through drop, continue with the
following.
e. Remove cotter pin from top of drop. Refer to
Figure 20. Save pin for reinstallation when
cleaning is complete.
f. Move metal clip closer to sensor so that it
comes off frame. Refer to Figure 20.
DRY5B
Figure 22
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Adjustments
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
i. Check coin return pendulum to verify it
swings freely. If pendulum does not swing
freely, spray pendulum pivot point with
Teflon-based lubricant and move pendulum
back and forth two to three times. An
additional application of Teflon-based
lubricant may be necessary to ensure that
pendulum swings freely. Refer to Figure 23.
IMPORTANT: DO NOT use isopropyl alcohol to
clean electronic sensor or eyes.
Eyes
Dry
Cotton
Swab
Pivot
Point
DRY7B
Figure 24
Pendulum
DRY6B
Figure 23
j. Check coin drop sensor for dust or dirt on
eyes. Wipe eyes with dry cotton swab. Refer
to Figure 24.
k. Reinstall coin return on to coin drop frame.
l. Reinstall metal clip and slide towards coin
insert slot. All cotter pin holes must line up.
m. Reinstall cotter pin.
n. Place drop on level surface to verify that coins
follow correct path in drop. It may be
necessary to lift drop to allow coin to follow
through sensor.
o. Reinstall coin drop into machine.
p. Reconnect electrical power to machine and
drop.
q. Add a coin to drop to verify that coin drop is
operating properly and that electrical
connection is working properly.
NOTE: If coin drop does not operate properly after
above steps have been completed, corrosion of
metal or vandalized components within coin drop
may be preventing the coin drop from functioning
correctly. Replace coin drop.
100
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802748
Adjustments
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
55. Cleaning Electronic Coin Drop
(2) Open cover for coin drop. Refer to
Figure 26.
NOTE: The electronic coin drop should be cleaned
once a year. Clean the drop more often if it is
exposed to high levels of residue or lint build-up.
Cover
a. Disconnect electrical power to machine and
drop.
b. Remove coin drop from machine.
c. Check the spring style of coin drop.
Coin Drops with Old-Style Spring (refer to
Figure 25):
(1) Move spring downward until cover catch is
free. Refer to Figure 25.
NOTE: Do not lift or overbend the spring in any
direction.
DRY2089N
Spring
Figure 26
Coin Drops with New-Style Spring (refer
to Figure 27):
Spring
Catch
DRY2088N
Figure 25
DRY2404N
DRY2404N
Figure 27
(3) Open cover of coin drop. Refer to
Figure 28.
802748
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Adjustments
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
NOTE: Do not overbend the spring by opening
cover too far.
Spring
DRY2405N
New-Style Spring Coin
DRY2405N
Figure 30
DRY2408N
DRY2408N
e. Clean residue from coin rail with an alcohol
moistened cloth. Refer to Figure 31.
Figure 28
d. Clean the coin path with a soft brush and wipe
exposed surfaces with an alcohol moistened
cloth. Refer to Figure 29 or Figure 30.
Alcohol
Moistened
Cloth
DRY2406N
Figure 31
Old-Style Spring Coin DropDRY2090N
DRY2090N
Figure 29
102
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802748
Adjustments
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
f. Clean light sensors with a soft brush or air
spray duster. Refer to Figure 32.
Light
Sensors
DRY2407N
DRY2407N
Figure 32
g. Close cover for coin drop.
h. Coin Drops with OLD-Style Spring - Move
spring back over cover catch.
i. Reinstall coin drop into machine.
j. Reconnect electrical power to machine and
drop.
k. Add a coin to drop to verify that coin drop is
operating properly and that electrical
connection is working properly.
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Adjustments
Notes
104
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802748
Section 9
Dryer Test Procedures
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
b. Disconnect motor wire harness at motor
disconnect block.
IMPORTANT: Electrical test procedures in this
service manual are performed by using a Volt-Ohm
meter. Tests can also be performed using a multimeter or any other electrical testing equipment with
which the service person is familiar.
NOTE: Refer to wiring diagram for internal motor
switch wires.
NOTE: Drive Motor Resistance
120 Volt
2,460 – 3,100 Ohms
240 Volt
10,000 - 13,000 Ohms
56. Drive Motor
Refer to Figure 33.
a. Remove motor and exhaust assembly.
Motor
Switch
Motor
Disconnect
Block
4
3
5
1
Motor and
Exhaust
Assembly
1
6
5
4
3
G
2
2 6
Drive
Motor
D326SE3A
Figure 33
802748
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105
Dryer Test Procedures
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
c. Motor Switch (Refer to SECTION 10 for Internal Wiring of the Dryer Motor Switch.)
WARNING
Disconnect electric power to dryer before performing any of the following
steps or when replacing inoperative motor switch.
W290
Unplug the motor wire harness from the motor
connection block before starting this test.
Start Terminals
Note: Disconnect
terminal 5 wire (yellow
or copper) from motor
switch before testing
start terminals.
A. Continuity exists between switch
terminal 5 and terminal 3 (black or
copper wire).
NO
YES
B. Manually depress actuator.
Continuity broken between switch
terminal 5 and terminal 3 (black or
copper wire).
NO
Inoperative start
switch. Replace switch.
YES
Run Terminals
Note: Reconnect
terminal 5 wire (yellow
or copper) to motor
switch before testing run
terminals.
Heater Circuit Terminals
C. Continuity broken between switch
terminal 6 and terminal 5 (yellow or
copper wire).
NO
YES
D. Manually depress actuator.
Continuity exists between switch
terminal 6 and terminal 5 (yellow or
copper wire).
YES
E. Continuity broken between switch
terminal 1 and switch terminal 2.
NO
Inoperative start
switch. Replace switch.
NO
YES
F. Manually depress actuator.
Continuity exists between switch
terminal 1 and switch terminal 2.
NO
Inoperative start
switch. Replace switch.
YES
Motor switch checks O.K.
106
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802748
Dryer Test Procedures
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
d. Motor Windings (Refer to SECTION 10 for Internal Wiring of the Dryer Motor Switch.)
WARNING
Disconnect electric power to dryer before performing any of the following
steps or when replacing inoperative motor switch.
W290
Start Winding
G. 1 – 2 Ohms between terminal
3 wire and orange or copper
wire on the back of switch.
NO
Inoperative start winding.
Replace motor.
NO
Inoperative run main
winding. Replace motor.
NO
Inoperative protector.
Replace motor.
YES
Run Main Winding
H. 1 – 2 Ohms between terminal
5 wire and orange or copper
wire on the back of switch
YES
Protector
I.
Continuity exists between
orange or copper wire on back
of switch and brown or blue
wire in terminal 4.
YES
All motor windings check O.K.
802748
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Dryer Test Procedures
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
57. Motor Switch
a. Remove motor and exhaust fan assembly.
b. Remove the two motor switch attaching
screws. Refer to Figure 39. Disconnect switch
leads. Remove motor switch.
c. Remove thermal overload protector.
NOTE: The thermal overload protector is unique to
the motor from which it was removed and should
only be used on that motor. To reduce the risk of
overheating the motor, do not use any thermal
overload protector other than the one taken from
the inoperative motor switch in step 3.
(1)Motor with Switch on Blower End
Using a small bladed screwdriver, press the
thermal overload protector mounting tab
downward and remove the thermal
overload protector from the inoperative
motor switch. Refer to Figure 34.
Mounting
Tab
Thermal
Overload
Protector
Motor
Switch
D029KE3A
Figure 34
108
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802748
Dryer Test Procedures
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
(2)Motor with Switch on Pulley End
Press the tip of a small bladed screwdriver
into the slot located between top of motor
switch and plastic clip. Lift up on handle of
screwdriver until both clip and thermal
overload protector detach from motor
switch. Refer to Figure 35.
d. Attach the thermal overload protector
removed in Step “c” to the new motor switch.
e. Install new motor switch onto motor and
reconnect motor switch leads removed in Step
“b”. Refer to Figure 39.
f. Test motor switch by following the step-bystep procedures included in Paragraph 56.
g. Before reinstalling the motor assembly, apply
power (120, 208 or 240 VAC – refer to
machine serial plate) directly to motor
terminals 4 and 5. Then start and run the
motor at least 6 times, making sure the motor
and switch are operating properly.
NOTE: The dryer manufacturer and parts
suppliers are not liable for improper switch
installation.
Thermal
Overload
Protector
Plastic
Clip
Top Of
Motor
Switch
Motor
Switch
D359SE3A
Figure 35
802748
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109
Dryer Test Procedures
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
4
Secondary
Coil
5
1
2
3
Holding Coil
and
Booster Coil
(Split Coil Valve)
120 Volt, 60 Hertz
Electrical
Supply Line
(208 or 240 Volt/50 Hertz –
refer to machine serial plate)
SECONDARY
COIL
Sensor
HOLDING
COIL
BOOSTER
COIL
Igniter
D268SE3A
D267SE3B
Figure 36
58. Burner System Operation
(Gas Models – Refer to Figure 36.)
a. Components
This burner has four basic components: a
silicon carbide (glow bar) igniter, burner tube,
sensor, and a two-stage gas valve consisting
of a split-coil valve and a secondary coil
valve. The split-coil valve is opened when the
dryer thermostat calls for heat, while the
secondary valve does not open until the
igniter has attained ignition temperature.
b. Pre-Ignition Circuits
When the dryer thermostat calls for heat,
circuits are completed through the holding
coil, sensor, booster coil and igniter. Both
coils must be energized to open the split-coil
valve. Once opened, the holding coil can hold
the valve open without assistance from the
booster coil. The sensor triggers the current to
travel around the secondary coil and through
the igniter, causing the igniter to get hot.
c. Burner Circuit
In approximately 30 seconds, the igniter
attains ignition temperature and ignition is
made. The heat from the burner flame causes
the sensor contacts (located on burner housing
110
beside the igniter) to open. A circuit is then
completed through the secondary valve coil,
opening the valve and allowing gas to flow.
d. Momentary Power Interruption
Upon resumption of power, sensor contacts
will still be open, permitting secondary valve
to open. However, with the secondary coil in
the circuit, the booster coil cannot draw
enough current to open the split-coil valve.
When sensor contacts do reclose, the
secondary valve will close, and the burner
system will be in the normal pre-ignition
circuit.
e. Flame Failure
In case of flame failure, the sensor contacts
will re-close in about 45 seconds. This will
close the secondary valve and the burner
system will be in the normal pre-ignition
circuit.
f. Ignition Failure
If flame is not established as sensor contacts
open, secondary valve will remain open until
sensor contacts re-close. Sensor will continue
to recycle the igniter and secondary valve
(about once per minute) until ignition is made
or dryer is turned off.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
802748
Dryer Test Procedures
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
59. Electrical Circuit To Ignition
System (Gas Models)
a. While supporting the access panel, remove two
screws from bottom edge of access panel.
b. Gently lower the access panel to disengage
locators from bottom edge of front panel.
c. Close main gas shut-off valve. Refer to Figure
19.
d. Remove valve wire harness disconnect block
from the holding and booster coil. Refer to
Figure 37.
e. Plug dryer power cord into wall receptacle, and
start the dryer in a heat setting (refer to the
Operating Instructions supplied with dryer).
f. Set test meter to read AC voltage and apply
meter probes into terminals on the dryer
harness plug that would correspond to
terminals "1" and "2" on the coil. Figure 36.
Meter should register line voltage in all Fabric
settings, except FLUFF which should read
“zero” VAC.
g. If meter does not read line voltage in Step “f”,
check motor switch, thermostats, fabric switch,
accumulator, or timer.
4
5
Secondary
Coil
WARNING
To reduce the risk of fire, explosion and
electric shock, close the valve in the gas
supply line to the gas dryer and disconnect
the electrical power unless gas or power
supplies are required to perform test
procedure.
W263
60. Gas Valve Coils Check (Gas
Models)
a. While supporting the access panel, remove two
screws from bottom edge of access panel.
b. Gently lower the access panel to disengage
locators from bottom edge of front panel.
c. Close main gas shut-off valve. Refer to
Figure 19.
d. Remove disconnect blocks from gas valve
coils.
e. Set test meter to read Ohms and put meter
probes to terminals shown in Figure 37, and in
the following chart.
COIL TOLERANCE READINGS
4 5
1
2
Meter probes to terminals:
Meter should read:
Holding Coil – Terminals 1 & 2
1365 ± 25 Ohms
Booster Coil – Terminals 1 & 3
560 ± 25 Ohms
Secondary Coil – Terminals 4 & 5 1220 ± 50 Ohms
1 - 3
NOTE: If meter registers any other readings than
those listed above, the respective coil(s) should be
replaced.
3
Holding
And Booster
Coil
D270SE3A
GAS VALVE FOR SILICON CARBIDE IGNITION
Figure 37
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Dryer Test Procedures
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
61. Sensor Check (Gas Models)
a. While supporting the access panel, remove
two screws from bottom edge of access panel.
b. Gently lower the access panel to disengage
locators from bottom edge of front panel.
c. Close main gas shut-off valve. Refer to
Figure 19.
d. Remove wires from sensor terminals.
e. Set test meter to read Ohms and put meter
probes on sensor terminals. Meter should read
“zero” Ohms. If meter registers an Ohm
reading of any amount, replace sensor.
62. Igniter Check (Gas Models)
a. While supporting the access panel, remove
two screws from bottom edge of access panel.
b. Gently lower the access panel to disengage
locators from bottom edge of front panel.
c. Close main gas shut-off valve. Refer to
Figure 19.
d. Disconnect igniter wires at disconnect block.
e. Set test meter to read Ohms and put meter
probes on terminals of igniter wires.
f. Silicon Carbide Igniter – meter should read
between 45 – 200 Ohms. Refer to Figure 38.
Attaching
Screw
Igniter and
Bracket
White
Ceramic
Portion
SILICON CARBIDE IGNITER AND
BRACKET ASSEMBLY
D337SE3A
Figure 38
NOTE: If meter does not read appropriate Ohms,
then replace the igniter.
IMPORTANT: Always examine all wires, terminals
and connectors to be sure wiring is correct before
replacing any components.
112
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802748
Dryer Test Procedures
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
63. Thermal Fuse (Electric Models)
a. While supporting the access panel, remove
two screws from bottom edge of front access
panel.
b. Gently lower the access panel to disengage
panel locators from bottom edge of front
panel.
c. Label and disconnect wires from thermal
fuse.
NOTE: Refer to wiring diagram when rewiring
thermal fuse.
d. Set multimeter to read Ohms. Apply meter
probes to thermal fuse terminals. Multimeter
should read 0 Ohms. If the meter does not
show any reading (infinite Ohms), then the
fuse is open. If the fuse is open, then replace
BOTH the thermal fuse and the limit
thermostat.
64. Heater Assembly (Electric
Models)
a. While supporting the access panel, remove
two screws from bottom edge of access panel.
b. Gently lower the access panel to disengage
panel locators from bottom edge of front
panel.
c. Disconnect wires from heater assembly.
Element
Color
KW Voltage/Hz.
Code
Resistance Reading
Red
5
240 V 60 Hz. 10.39 ± .31 Ohms Cold
White
4.75 208 V 60 Hz. 8.2 ± .5 Ohms Cold
Green
4.8
240 V 50 Hz. 10.75 ± .32 Ohms Cold
Yellow
4
240 V 50 Hz. 13.03 ± .39 Ohms Cold
Blue
3.1
240 V 50 Hz. 16.7 ± .5 Ohms Cold
Orange
5.35 240 V 60 Hz. 9.72 ± .3 Ohms Cold
Purple
4.25 208 V 60 Hz. 9.27 ± .3 Ohms Cold
65. Cycling or Limit Thermostat
a. While supporting the access panel, remove
two screws from bottom edge of access panel.
b. Gently lower the access panel to disengage
panel locators from bottom edge of front
panel.
c. Label and disconnect wires from thermostat.
NOTE: Refer to wiring diagram when rewiring
thermostat.
Cycling Thermostat (S.P.S.T. – 2 Terminals)
or Limit Thermostat
d. Set meter to read Ohms.
(1)Apply meter probes to the thermostat
terminals.
(2)Meter should read “zero.”
NOTE: Refer to wiring diagram when rewiring
heater assembly.
d. Set meter to read Ohms. Apply meter probes
to the heater assembly terminals. Meter
should read as follows: (Cold Ohms).
802748
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113
Dryer Test Procedures
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
66. Door Switch
a. While supporting the access panel, remove
two screws from bottom edge of access panel.
b. Gently lower the access panel to disengage
locators from bottom edge of front panel.
c. Remove two screws holding bottom tabs on
front panel to dryer side panels. Swing bottom
of front panel away from dryer far enough to
disengage hold-down clips and locators from
cabinet top.
d. Disconnect wires from door switch.
NOTE: Refer to model wiring diagram when
rewiring door switch.
e. Set meter to read Ohms and apply meter
probes on switch terminals 1 and 3 with door
closed. You should get “zero” reading.
f. Apply probes to terminals 1 and 2 with door
closed. The meter should read “infinite”.
g. Open door. Meter should read “infinite”
between 1 and 3 and “zero” between 1 and 2.
114
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802748
Section 10
Internal Wiring of Dryer Motor Switch
WARNING
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect all electric power to the machine and accessories before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start machine with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the machine is properly grounded.
• Washer motor not grounded! Disconnect electric power before servicing motor.
W502
MAIN
START
BLACK/COPPER
CUSTOMER CIRCUIT
OVERLOAD
PROTECTOR
PUSH TO
START
YELLOW/COPPER
ORANGE/COPPER
BLUE/BROWN
LINE
2 6
4 3
5
1
G
S
R
R
SWITCH SHOWN IN START POSITION
2 6
4 3
5
R.S.P.C.
Motor Switch
Attaching Screws
1
G
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