Maytag MLE22PD User manual

Maytag Commercial
Stack Washer/Dryer 50Hz
SERVICE MANUAL
MLE22PD MLE22PN
MLG22PD MLG22PN
W11262425
TECHNICAL EDUCATION
MODELS:

ii
WHIRLPOOL CORPORATION assumes no responsibility
for any repairs made on our products by anyone other than
authorized Commercial Laundry Service Professionals.
Copyright © 2018, Whirlpool Corporation, Benton Harbor, MI 49022
FORWARD
This Service Manual, (Part No. W11262425), provides the Commercial Laundry
Service Professional with information on the operation, and service of the Maytag
Commercial Stack Washer/Dryer. For specic information on the model being
serviced, refer to the “Installation Instructions,” or “Tech Sheet” provided with the
Stack Washer/Dryer or on the Service Website. The Wiring Diagrams used in this
Service Manual are typical and should be used for training purposes only. Always use
the Wiring Diagram located in the Tech Sheet supplied with the product, or on the
Service Website, when servicing the Stack Washer/Dryer.
The Service Website is located online at www.serviceconnections.org. For access to
the website or for questions, please contact your Field Service Manager.
GOALS AND OBJECTIVES
The goal of this Service Manual is to provide information that will enable the
Commercial Laundry Service Professional to properly diagnose malfunctions and
repair the Maytag Commercial Stack Washer/Dryer. The objectives of this Service
Manual are to:
• Understand and follow proper safety messages.
• Understand and diagnose improper installations.
• Successfully troubleshoot and diagnose malfunctions.
• Successfully perform necessary repairs.
• Successfully return the Stack Washer/Dryer to its proper operational status.
Phillips is a registered trademark of Phillips Screw Company
Torx is a registered trademark of ACUMENT INTELLECTUAL PROPERTIES, LLC

iii
Page
TABLE OF CONTENTS
GENERAL................................................................................................................................. 1-1
Safety................................................................................................................................ 1-1
Model number designations.............................................................................................. 1-2
Serial number designations ..............................................................................................1-2
Model & serial number label and Tech sheet location ...................................................... 1-3
Warranty ........................................................................................................................... 1-4
INFORMATION & SPECIFICATIONS....................................................................................... 2-1
Dimensions ....................................................................................................................... 2-1
Clearances........................................................................................................................ 2-1
Maintenance instructions .................................................................................................. 2-2
Shipping bolts - remove .................................................................................................... 2-5
Shipping bolts - reinstall.................................................................................................... 2-5
Specications.................................................................................................................... 2-6
BASIC OPERATION ................................................................................................................. 3-1
Electronic control setup instructions ................................................................................. 3-1
General user information ..................................................................................................3-2
Theory of operation........................................................................................................... 3-3
Understanding the gas valve and ignition system ............................................................ 3-4
Cleaning the dryer location ............................................................................................... 3-5
Cleaning the lint screen ....................................................................................................3-5
Cleaning the dryer interior ................................................................................................ 3-6
Removing accumulated lint............................................................................................... 3-6
Vacation and moving care ................................................................................................ 3-6
COMPONENT ACCESS ........................................................................................................... 4-1
Chemical dispenser drawer and parts .............................................................................. 4-1
Control panel .................................................................................................................... 4-3
Control board connectors ................................................................................................. 4-4
Control board .................................................................................................................... 4-5
Keypad assembly ............................................................................................................. 4-6
Service switch assembly................................................................................................... 4-7
Control panel bracket........................................................................................................ 4-8
Coin drop .......................................................................................................................... 4-9
Coin vault and Coin vault switch....................................................................................... 4-10
Dryer remove from stack .................................................................................................. 4-11
Door and Hinge assembly - dryer ..................................................................................... 4-12
Reverse a dryer door ........................................................................................................ 4-13
Door handle - dryer........................................................................................................... 4-15
Inner door lens - dryer ...................................................................................................... 4-15
Drum light lens.................................................................................................................. 4-16
Console cover - dryer ....................................................................................................... 4-17
Control board - dryer......................................................................................................... 4-18
CCU connections - dryer .................................................................................................. 4-19
Front panel - dryer ............................................................................................................ 4-20

iv
TABLE OF CONTENTS - CONTINUED
Page
Door switch - dryer............................................................................................................ 4-21
Blower housing cover ....................................................................................................... 4-21
Blower wheel .................................................................................................................... 4-22
Front bulkhead - dryer ...................................................................................................... 4-23
Front support rollers and Shafts ....................................................................................... 4-24
Belt - dryer ........................................................................................................................ 4-25
Top panel - dryer............................................................................................................... 4-26
Back panel - dryer............................................................................................................. 4-27
Console bracket - dryer .................................................................................................... 4-28
Drum - dryer...................................................................................................................... 4-29
Bafe replace - dryer ........................................................................................................ 4-30
Thermistor - dryer ............................................................................................................. 4-31
Thermal fuse - dryer ......................................................................................................... 4-31
Blower housing ................................................................................................................. 4-32
Idler pulley ........................................................................................................................ 4-33
Motor and Speed increaser - dryer ................................................................................... 4-34
Belt switch......................................................................................................................... 4-35
Motor bracket - dryer ........................................................................................................ 4-36
Back support rollers & shafts ............................................................................................ 4-37
Auto transformer - gas dryers ........................................................................................... 4-38
Side panel - dryer (left side shown) .................................................................................. 4-39
Back bulkhead .................................................................................................................. 4-40
Heat plenum ..................................................................................................................... 4-40
Radiant sensor.................................................................................................................. 4-41
Ignitor................................................................................................................................ 4-41
Burner high limit................................................................................................................ 4-42
Burner thermal limit........................................................................................................... 4-42
Gas valve coils.................................................................................................................. 4-43
Gas burner assembly........................................................................................................ 4-44
Gas valve remove from bracket........................................................................................ 4-45
Heating element................................................................................................................ 4-46
Heater coil......................................................................................................................... 4-47
Door and Hinge assembly - washer.................................................................................. 4-48
Door hook - washer .......................................................................................................... 4-48
Door parts and disassembly - washer .............................................................................. 4-49
Water inlet valves.............................................................................................................. 4-51
Water inlet valves - remove from back without removing dryer ........................................ 4-52
RFI line lter...................................................................................................................... 4-53
Pressure sensor................................................................................................................ 4-54
Chemical dispenser assembly .......................................................................................... 4-55
UIC transformer ................................................................................................................ 4-57
Front panel - washer......................................................................................................... 4-58
Door lock / Switch assembly - washer .............................................................................. 4-59
Front support bracket - washer......................................................................................... 4-60

v
TABLE OF CONTENTS - CONTINUED
Page
Toe panel .......................................................................................................................... 4-61
Central control unit (CCU) - washer.................................................................................. 4-62
CCU connections - washer ............................................................................................... 4-63
Motor control unit (MCU) .................................................................................................. 4-64
Drain pump ....................................................................................................................... 4-65
Drain hose and tting........................................................................................................ 4-67
Back panel - washer ......................................................................................................... 4-68
Cross braces..................................................................................................................... 4-69
Drive belt........................................................................................................................... 4-70
Temperature sensor.......................................................................................................... 4-71
Motor................................................................................................................................. 4-72
Vent tube........................................................................................................................... 4-73
Earth switch ...................................................................................................................... 4-74
Air gap damper ................................................................................................................. 4-75
Bellow ............................................................................................................................... 4-76
Tub and Spin basket assembly......................................................................................... 4-78
Bafe replace - washer ..................................................................................................... 4-81
COMPONENT TESTING........................................................................................................... 5-1
Inlet valve solenoids ......................................................................................................... 5-1
Pressure sensor................................................................................................................ 5-2
RFI line lter...................................................................................................................... 5-3
Door lock assembly .......................................................................................................... 5-4
Drain pump motor ............................................................................................................. 5-5
Temperature sensor.......................................................................................................... 5-6
Drive motor - dryer............................................................................................................ 5-7
Keypad continuity test....................................................................................................... 5-8
Coin drop acceptor ........................................................................................................... 5-9
Transformer ...................................................................................................................... 5-10
Earth switch ...................................................................................................................... 5-10
Gas valve coils.................................................................................................................. 5-11
Burner ignitor .................................................................................................................... 5-12
Manometers...................................................................................................................... 5-12
Radiant sensor.................................................................................................................. 5-14
Burner high limit & Burner thermal limit - gas dryers only................................................. 5-14
Heating element - electric dryers only .............................................................................. 5-15
Burner thermal limit - electric dryers only ......................................................................... 5-16
Drive motor - washer ........................................................................................................ 5-17
Thermistor - dryer ............................................................................................................. 5-18
Thermal fuse..................................................................................................................... 5-19

vi
TABLE OF CONTENTS - CONTINUED
Page
DIAGNOSIS & TROUBLESHOOTING ..................................................................................... 6-1
Diagnostic guide ............................................................................................................... 6-1
Diagnostic codes - dryer ................................................................................................... 6-1
Diagnostic codes - washer ............................................................................................... 6-2
Service diagnostic test modes .......................................................................................... 6-7
Quick overview test - washer............................................................................................ 6-9
Manual overview test - washer ......................................................................................... 6-10
Diagnostic test quick guide ............................................................................................... 6-11
Help mode ........................................................................................................................ 6-12
Help codes........................................................................................................................ 6-12
Help mode submenu......................................................................................................... 6-13
Help mode symbols and elements.................................................................................... 6-14
Help mode keypad function table ..................................................................................... 6-14
Troubleshooting guide ...................................................................................................... 6-15
WIRING DIAGRAMS................................................................................................................. 7-1
Electric models ................................................................................................................. 7-1
Gas models....................................................................................................................... 7-2
ALPHABETICAL COMPONENT INDEX .................................................................................. 7-3

vii
INTERACTIVE SERVICE MANUAL INSTRUCTIONS
View on PC, MAC, iPad, iPhone and Android devices.
Acrobat Reader is available for all devices to open .pdf documents.
Click on any topic in the Table of Contents to go directly to that section.
Click on any link that says (See page ?-?) to go directly to the page referenced.
Click to view the video procedure on YouTube.
VIEW EQUIPMENT & SAFETY VIDEO

viii
---- NOTES ----

1-1
GENERAL
IMPORTANT
Electrostatic Discharge (ESD)
Sensitive Electronics
ESD problems are present everywhere. ESD may damage or weaken
the electronic control assembly. The new control assembly may appear
to work well after repair is nished, but failure may occur at a later date
due to ESD stress.
• Use an anti-static wrist strap. Connect wrist strap to green earth
connection point or unpainted metal in the appliance
-OR-
Touch your nger repeatedly to a green earth connection point or
unpainted metal in the appliance.
• Before removing the part from its package, touch the anti-static bag
to a green earth connection point or unpainted metal in the
appliance.
• Avoid touching electronic parts or terminal contacts; handle
electronic control assembly by edges only.
• When repackaging failed electronic control assembly in anti-static
bag, observe above instructions.
SAFETY

1-2
MODEL NUMBER DESIGNATIONS
SERIAL NUMBER DESIGNATIONS
MODEL NUMBER M LE 22 PD A W W 0
BRAND
M Maytag
PRODUCT
LE Laundry Stack - Electric Heat
LG Laundry Stack - Gas Heat
MODEL NUMBER
20 Stack Washer/Dryer (Starting 2010)
22 Stack Washer/Dryer (Starting 2018)
CONTROL
PD Processor Coin drop
PR Processor Reader
PN Processor Non-coin
MARKETING CODE
A First in series
B Second in series
VOLTAGE CODE
W 120V 60Hz (U.S.)
X 120V 60Hz (Canada)
G 220-240V 50Hz (Export)
Y 240V 60Hz (U.S.)
Z 240V 60Hz (Canada)
COLOR
W White
ENGINEERING CHANGE (NUMERIC)
SERIAL NUMBER M 7 35 10901
DIVISION RESPONSIBILITY
M Marion, Ohio
YEAR OF PRODUCTION
7 2017
8 2018
9 2019
WEEK OF PRODUCTION
35 35th Week in the calendar year
MANUFACTURING SEQUENCE NUMBER