Maytag 30 Series User manual

Maytag
Model 30 Commercial
Front Loading Washers
SERVICE MANUAL
MHN30PDAWW0
MHN30PDAXW0
MHP30PRAWW0
MHN30PRAWW0
W10251148
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 © 2011, Whirlpool Corporation, Benton Harbor, MI 49022
FORWARD
This Maytag Service Manual, (Part No. W10251148), provides the Commercial
Laundry Service Professional with information on the installation, operation, and
service of the single load coin and non coin Model 30 Series Commercial Front
Loading Washers. For specic information on the model being serviced, refer to
the “Installation Instructions,” or “Tech Sheet” provided with the washer. The Wiring
Diagrams used in this Service Manual are typical and should be used for training
purposes only. Always use the Wiring Diagram supplied with the product when
servicing the washer.
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 Commercial Front Loading Washers. 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 washer to its proper operational status.
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TABLE OF CONTENTS
View entire service video .................................................................................................. vi
Links to documents........................................................................................................... vi
Installation Instructions................................................................................................ vi
Tech Sheet - (English)................................................................................................. vi
Tech Sheet - (French) ................................................................................................. vi
GENERAL................................................................................................................................. 1-1
Model number designations.............................................................................................. 1-2
Serial number designations .............................................................................................. 1-2
Model & serial number label and tech sheet location ....................................................... 1-3
Specications.................................................................................................................... 1-4
Warranty ........................................................................................................................... 1-5
INSTALLATION REQUIREMENTS........................................................................................... 2-1
Tools and parts ................................................................................................................. 2-1
Alternate parts .................................................................................................................. 2-2
Accessories ...................................................................................................................... 2-2
Options ............................................................................................................................. 2-2
Location requirements ...................................................................................................... 2-3
Drain system..................................................................................................................... 2-4
Electrical requirements ..................................................................................................... 2-5
Remove shipping bolts ..................................................................................................... 2-6
Reinstall shipping bolts ..................................................................................................... 2-6
BASIC OPERATION ................................................................................................................. 3-1
Set up instructions ............................................................................................................ 3-1
General user information .................................................................................................. 3-2
Control set-up procedures ................................................................................................ 3-4
Remove AA1 jumper......................................................................................................... 3-5
Set-up codes..................................................................................................................... 3-6
COMPONENT ACCESS ........................................................................................................... 4-1
Component locations ........................................................................................................ 4-1
Chemical dispenser drawer and parts .............................................................................. 4-2
Remove facia and control panel cover ............................................................................. 4-2
Lift washer top .................................................................................................................. 4-3
Remove control panel....................................................................................................... 4-4
Remove user interface control (UIC) ................................................................................ 4-5
Remove key pad assembly............................................................................................... 4-6
Remove control panel bracket .......................................................................................... 4-7
Remove central control unit (CCU)................................................................................... 4-8
CCU connections.............................................................................................................. 4-9
Remove water inlet valves................................................................................................ 4-10
Remove pressure switch .................................................................................................. 4-11
Remove RFI line lter ....................................................................................................... 4-12
Remove power supply cord .............................................................................................. 4-13
Remove chemical dispenser assembly ............................................................................ 4-14
Page

iv
Remove transformer ......................................................................................................... 4-15
Remove door lock / switch assembly................................................................................ 4-16
Remove door hook ........................................................................................................... 4-18
Remove door and hinge assembly ................................................................................... 4-18
Door parts and disassembly ............................................................................................. 4-19
Remove lower service panel............................................................................................. 4-21
Remove drain pump ......................................................................................................... 4-22
Remove drain pump motor ............................................................................................... 4-24
Remove tub to pump hose................................................................................................ 4-25
Remove ground switch ..................................................................................................... 4-26
Remove rear panel ........................................................................................................... 4-28
Remove motor control unit (MCU) .................................................................................... 4-29
Remove temperature sensor ............................................................................................ 4-30
Remove drive belt............................................................................................................. 4-31
Remove motor .................................................................................................................. 4-32
Remove basket pulley ...................................................................................................... 4-33
Remove air gap damper ................................................................................................... 4-34
Remove vent tube............................................................................................................. 4-35
Remove water inlet valve - from the back......................................................................... 4-35
Remove front panel .......................................................................................................... 4-36
Remove the bellow ........................................................................................................... 4-37
Remove a pedestal........................................................................................................... 4-38
Remove tub and spin basket assembly ............................................................................ 4-39
Replace bafe................................................................................................................... 4-42
Remove metercase (model MHN30PD) ........................................................................... 4-43
Remove coin drop (model MHN30PD) ............................................................................. 4-44
Remove coin vault switch (model MHN30PD).................................................................. 4-45
Remove service switch (model MHN30PD)...................................................................... 4-46
Main top support ............................................................................................................... 4-46
COMPONENT TESTING........................................................................................................... 5-1
Inlet valve solenoids ......................................................................................................... 5-1
Pressure switch ................................................................................................................ 5-2
RFI line lter...................................................................................................................... 5-3
Door lock assembly .......................................................................................................... 5-4
Drain pump motor ............................................................................................................. 5-5
Temperature sensor.......................................................................................................... 5-6
Drive motor ....................................................................................................................... 5-7
Ground switch................................................................................................................... 5-7
User interface membrane switch ...................................................................................... 5-8
Coin drop acceptor ........................................................................................................... 5-9
Transformer ...................................................................................................................... 5-10
TABLE OF CONTENTS - CONTINUED
Page

v
DIAGNOSIS & TROUBLESHOOTING ..................................................................................... 6-1
Washer diagnostic mode .................................................................................................. 6-1
Failure / error display codes ............................................................................................. 6-2
Diagnostic test .................................................................................................................. 6-6
Code display ..................................................................................................................... 6-6
Flashing mode .................................................................................................................. 6-7
Special cycle mode........................................................................................................... 6-7
Quick overview test........................................................................................................... 6-8
Manual overview test ........................................................................................................ 6-9
Diagnostic test quick guide ............................................................................................... 6-10
Help mode ........................................................................................................................ 6-10
Button functions in help mode table.................................................................................. 6-11
Help mode symbols and elements.................................................................................... 6-11
Help codes........................................................................................................................ 6-12
Help mode submenu......................................................................................................... 6-12
Pump motor continuity test ............................................................................................... 6-13
Drive motor ohm test ........................................................................................................ 6-13
Transformer ohm test........................................................................................................6-13
Water temperature sensor ................................................................................................ 6-13
Cycle temperature selections ........................................................................................... 6-13
CCU wire harness connector table ................................................................................... 6-14
Manually unlocking the door latch .................................................................................... 6-15
Manually unlatching tripped door latch ............................................................................. 6-15
Washer care...................................................................................................................... 6-15
Washer clean-out cycle procedure ................................................................................... 6-16
Troubleshooting guide ...................................................................................................... 6-17
WIRING DIAGRAM................................................................................................................... 7-1
TABLE OF CONTENTS - CONTINUED
Page

vi
INTERACTIVE SERVICE MANUAL INSTRUCTIONS
Click the mouse on any topic in the table of contents to go directly to that section.
Click the mouse on any link that says (See page ?-?) to go directly to the page referenced.
Click the mouse on any button in the links section to open the attached document.
This symbol means a video clip is available. Click the mouse on the camera icon
to view the video. To close the movie, click the X box at the top corner of the video window.
System requirements to view the video clips in this manual are:
Windows 2000 or higher, Adobe®Acrobat®Reader®version 6 or higher,
Windows Media Player for PC and Quicktime Player for Macintosh computers.
LINKS TO DOCUMENTS

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 ground
connection point or unpainted metal in the appliance
-OR-
Touch your nger repeatedly to a green ground connection point or
unpainted metal in the appliance.
• Before removing the part from its package, touch the anti-static bag
to a green ground 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.
WASHER SAFETY

1-2
n
Horizontal Axis Washer Non-Pedestal
Horizontal Axis Washer w/Pedestal
MODeL nUMBer M Hn 30 PD A W W 0
BrAnD
M Maytag
DrIVe TYPe
HN
PrODUCT
30 Commercial HE Front Load Washer
COnTrOL TYPe
PD Processor Coindrop
PR Processor Reader
PN Processor Non-coin
CS Mechanical Coinslide
MN Mechanical Non-coin
MArKeTInG CODe
AFirst series
B Second series
VOLTAGe CODe
W 120V-60Hz (US)
X 120V-60Hz (Canada)
G 220-240V-50Hz (Export Models)
COLOr
W White
enGIneerInG CHAnGe (nUMerIC)
-
SerIAL nUMBer HL 0 35 10901
DIVISIOn reSPOnSIBILITY
M Marion, Ohio
HL Monterrey, MX
YeAr OF PrODUCTIO
W 2008
Y2009
0 2010
1 2011
WeeK OF PrODUCTIOn
35 35th Week in the calendar year
MAnUFACTUrInG SeQUenCe nUMBer
HP
AH Automatic Horizontal Axis Washer
22 Commercial HE Front Load Washer
2 2012
2013
2014
3
4
2015
5
C Clyde, Ohio
MODEL NUMBER DESIGNATIONS
SERIAL NUMBER DESIGNATIONS

1-3
MODEL & SERIAL NUMBER LABEL AND
TECH SHEET LOCATION
Location of
Model & Serial Number Label
Location of
Tech Sheet
Parts List
Wiring Diagram

1-4
SPECIFICATIONS
Door
MHN-
MHP -
44.65
Total Hot Water use/cycle*
Total water use/cycle*
(Owner Adjustable)
Pedestal Equipped
& K nits, Quick
Whites, Colors, Brights, Perm Press, Delicates
6 Cycles
245 lbs
254 lbs
MHP - 234 lbs /
MHN-230 lbs
Product Weight (uncrated)
Card Reader Not Included
Product Weight (crated)
2 mm)
(7
30.
(68.58 cm)
15 Amps
3.2 ft
Normal = 40 RPM
MHP only
1-4
SPeCiFiCaTiOnS
Width
Capacity
Front Load HE Washer
Model Number
MHN30PDAWW
MHN30PRAWW
MHP30PRAWW
Model Description
Color
White / Black Accents
Stainless Steel Trim
Temperature Control
NTC - Thermister
No
Sensors
Suds Sensor
NTC (Thermistor)
Water Level Sensor
Wash Speed
Spin Speeds
Max = 1000 RPM
Medium = 850 RPM
Low = 750 RPM
Extra Low = 600 RPM
Rated Load Size
18 lbs
Voltage
120 volts
Frequency
60 Hz
Max Amp Draw
12 Amps
US Breaker Rating Amps
Power Cord Length
6 ft
MEF
2.5
Water Factor
3.7
11.955 gallons/cycle*
Controlled Induction Motor
Motor Protection
HP
Variable Speed, Reversing
Thermally Protected
1/4 HP
Height
”
Install Depth: Min - Max
28.75”
Money Acceptor US = Single Coin Drop
Canada = Dual Coin Drop
27"
MHN30PDAY
W
3
MHP - 234 lbs /
MHN-230 lbs
44.65
” /
44.65
”
180° Opening / Non-Reversible
verage loads based on testing using* A
CSA Standard C360-03/DOE Appendix J1/
T396
Hot wash 3.53 gal (13.36 liters) /
Warm wash 1.38 gal (5.22 liters)