Maytag MMV5156AAB Service manual

Models and manufacturing
numbers in this manual.
2002 models are listed in bold.
ACO1520AB
ACO1520AC
ACO1520AW
Service
Over The Range 2001 and 2002
Domestic Microwave Ovens
This manual replaces RS2100011 Revision 0.
Service Manual for:
Amana®
Jenn-Air®
Maytag®
ACO1530AB
ACO1530AW
ACO1560AB
ACO1560AC
ACO1560AS
ACO1560AW
ACO1840AB
ACO1840AC
ACO1840AW
ACO1860AB
ACO1860AC
ACO1860AS
ACO1860AW
JMV8196AAB
JMV8196AAQ
JMV8196AAS
JMV8196AAW
MMV4184AAB
MMV4184AAQ
MMV4184AAW
MMV5156AAB
MMV5156AAQ
MMV5156AAS
MMV5156AAW
MMV5186AAB
MMV5186AAQ
MMV5186AAS
MMV5186AAW
MVHRK3
MVHRK4
This manual is to be used by qualified appliance
technicians only. Maytag does not assume any
responsibility for property damage or personal
injury for improper service procedures done by an
unqualified person.
16021668
Revision 0
September 2002
Important Information
Pride and workmanship go into every product to provide our customers with quality products. It is possible,
however, that during its lifetime a product may require service. Products should be serviced only by a qualified
service technician who is familiar with the safety procedures required in the repair and who is equipped with the
proper tools, parts, testing instruments and the appropriate service manual. REVIEW ALL SERVICE INFORMATION
IN THE APPROPRIATE SERVICE MANUAL BEFORE BEGINNING REPAIRS.
Important Notices for Consumers and Servicers
!
WARNING
To avoid risk of serious injury or death, repairs should not be attempted by an unauthorized personal, dangerous
conditions (such as exposure to electrical shock) may result.
!
CAUTION
Maytag will not be responsible for any injury or property damage from improper service procedures. If performing
service on your own product, assume responsibility for any personal injury or property damage which may result.
To locate an authorized servicer, please consult your telephone book or the dealer from whom you purchased this
product. For further assistance, please contact:
Customer Service Support Center
CAIR Center
Web Site
Telephone Number
WWW.AMANA.COM ............................................... 1-800-843-0304
WWW.JENNAIR.COM ............................................ 1-800-536-6247
WWW.MAYTAG.COM ............................................. 1-800-688-9900
CAIR Center in Canada .......................................... 1-800-688-2002
Amana Canada Product .......................................... 1-866-587-2002
Recognize Safety Symbols, Words, and Labels
! DANGER
DANGER—Immediate hazards which WILL result in severe personal injury or death.
!
WARNING
WARNING—Hazards or unsafe practices which COULD result in severe personal injury or death.
!
CAUTION
CAUTION—Hazards or unsafe practices which COULD result in minor personal injury or product or property
damage.
16021668 Rev. 0
2
©2002 Maytag Appliances Company
Table of Contents
Disassembly Procedures
Grille ........................................................................ 18
Door Assembly ........................................................ 18
Door Disassembly ................................................... 18
Control Panel .......................................................... 19
P.C. Board ............................................................... 19
Control Key Panel ................................................... 20
Outer Case .............................................................. 20
Stirrer Assembly (some models) ............................. 21
Interlock Door Latch Switches ................................ 21
High Voltage Capacitor ........................................... 22
Diode ....................................................................... 22
Transformer ............................................................ 23
Fuse ........................................................................ 23
Magnetron ............................................................... 23
Magnetron Fan Assembly ....................................... 23
Magnetron Thermal Fuse ........................................ 24
Humidity Sensor ...................................................... 24
Oven Thermostat .................................................... 24
Base Thermostat ..................................................... 25
Light Socket ............................................................ 25
Turntable Motor ....................................................... 25
Vent Blower ............................................................. 25
Wiring Diagrams And Schematics
ACO1520* and ACO1530* Models ......................... 26
ACO1560* and MMV5156* Models ......................... 27
ACO18*, JMV8196*, MMV4184*, and
MMV5186* Models ............................................... 28
Appendix A
Installation Instructions
Parts, Tools, and Materials .................................. A-4
Preparing Electrical Connection .......................... A-5
Preparing Venting System .................................. A-5
Preparing Venting Blower .................................... A-7
Preparing Wall and Upper Cabinet ..................... A-8
Attaching Oven to the Wall ............................... A-10
Appendix B
Care and Cleaning .............................................. B-2
Important Information ................................................... 2
Important Product Information ...................................... 4
Important Safety Information ........................................ 5
Microwave Leakage Testing ......................................... 6
General Information
Location of Model Number ........................................ 7
Model Identification ................................................... 7
Parts and Accessories .............................................. 7
Service ...................................................................... 7
Asure™ Extended Service Plan ................................ 7
Oven Specifications ACO15* Models ........................ 7
Oven Specifications ACO18* Models ........................ 7
Electrical Rating ........................................................ 7
Electrical Requirements ............................................ 7
Grounding Instructions .............................................. 8
Microwave Oven Description .................................... 8
Testing Procedures
Primary Interlock Switch Test .................................... 9
Secondary Interlock Switch Test ............................... 9
Interlock Monitor Switch Test .................................... 9
Magnetron ................................................................. 9
High Voltage Transformer ....................................... 9
High Voltage Capacitor ........................................... 10
High Voltage Diode ................................................. 10
Humidity Sensor ...................................................... 10
Relay ....................................................................... 10
Control Key Panel .................................................... 10
Circuit Board ........................................................... 12
Fuse ........................................................................ 12
Fan Motor ................................................................ 12
Oven Thermostat .................................................... 12
Base Thermostat - ACO18*, JMV8196*,
MMV4184*, and MMV5186* only ......................... 12
Magnetron Thermal Fuse - ACO18*, JMV8196*,
MMV4184*, and MMV5186* only ......................... 12
Surge Resistor ........................................................ 12
Troubleshooting Procedures ...................................... 13
©2002 Maytag Appliances Company
3
16021668 Rev. 0
3
Important Product Information
!
!
WARNING
WARNING
To avoid risk of electrical shock, injury or death, make
sure these grounding instructions are followed.
Precautions to be observed before and during
servicing to avoid possible exposure to excessive
microwave energy or electrical shock, disconnect
power to oven.
Grounding Instructions
(A) Do not operate or allow oven to be operated with
door open.
!
(B) Make the following safety checks on all ovens to
be serviced before activating the magnetron or
other microwave source, and make repairs as
necessary:
WARNING
Do not remove grounding prong when installing
grounded appliance in a home or business that does
not have three wire grounding receptacle. Under no
condition is grounding prong to be cut off or removed.
It is the personal responsibility of the consumer to
contact a qualified electrician and have a properly
grounded three prong wall receptacle installed in
accordance with appropriate electrical codes
• Interlock operation
• Proper door closing
• Seal and sealing surfaces (arcing, wear, and
other damage)
• Damage to or loosening of hinges and latches
• Evidence of dropping or abuse
(C) Before turning on microwave power for any
service test or inspection within the microwave
generating compartments, check the magnetron,
waveguide or transmission line, and cavity for
proper alignment, integrity, and connections.
Servicing of Grounded Products
The standard accepted color coding for grounding wires
is GREEN or GREEN WITH YELLOW STRIPE. These
ground leads are NOT to be used as current carrying
conductors. It is extremely important that the technician
replace any and all grounds prior to completion of the
service call. Under no condition should ground wire be
left off causing a potential hazard to technicians and
consumer.
(D) Any failed or misadjusted components in the
interlock, monitor, door seal, and microwave
generation and transmission systems shall be
repaired, replaced or adjusted by procedures
described in this manual before oven is released
to the consumer.
(E) Check microwave leakage to verify compliance
with the federal performance standard should be
performed on each oven prior to release to the
consumer.
Wiring
Good service practice is to never route wiring over
terminals and/or sharp edges. This applies to any
wiring without regard to the circuit voltage. Wire
insulation material and thickness is designed and
regulated for electrical spacing purpose only, but
cannot always be relied upon because of possible cuts
and/or abrasions, which can occur during servicing.
16021668 Rev. 0
4
©2002 Maytag Appliances Company
Important Safety Information
!
7. In the area of the transformer, capacitor, diode, and
magnetron there is HIGH VOLTAGE. When the unit
is operating - keep this area clean and free of
anything which could possibly cause an arc or
ground, etc.
8. Do not for any reason defeat the interlock switches,
there is no valid reason for this action at any time;
nor will it be condoned by Maytag.
9. IMPORTANT: Before returning a microwave to a
customer, check for proper switch interlock action.
The primary and secondary switches MUST open
when the door is actuated. The monitor switch
MUST close at a 1/4 inch when the door is opened.
10.Before returning a microwave to a customer, verify
the door spacing is reasonably uniform along the
top, bottom, and sides and that it measures 1/8 inch
or less.
11. The Maytag microwave oven should never be operated
with:
• Any components removed and/or bypassed.
• Any of the safety interlocks are found to be
failed.
• Any of the seal surfaces are defective, missing,
or damaged.
12.To ensure that the unit does not emit excessive
microwave leakage and to meet the Department of
Health Human Service guidelines, check the oven
for microwave leakage using Narda Model 8110B,
Holaday HI-1501, HI-1510, and HI-1710 leakage
monitor as outlined in the instructions. The
maximum leakage level allowed is 4mW/cm2.
13.If servicer encounters an emission reading over
4mw/cm2 the servicer is to cease repair and contact
the Maytag Service Department immediately for
further direction. Maytag will contact the proper
Government Agency upon verification of the test
results.
CAUTION
Read the following information to avoid possible
exposure to microwave radiation:
The basic design of the Maytag microwave oven makes it
an inherently safe device to both use and service.
However, there are some precautions which should be
followed when servicing the microwave oven to maintain
this safety. These are as follows:
1. Always operate the unit from an adequately
grounded outlet. Do not operate on a two-wire
extension cord.
2. Before servicing the unit (if unit is operable) perform
the microwave leakage test.
3. The oven should never be operated if the door does
not fit properly against the seal; the hinges or hinge
bearings are damaged or broken; the choke is
damaged, (pieces missing, etc.); or any other visible
damage can be noted. Check the choke area to
ensure that this area is clean and free of all foreign
matter.
4. If the oven operates with the door open and
produces microwave energy, take the following
steps.
A. Tell the user not to operate the oven.
B. Contact Maytag immediately.
5. Always have the oven disconnected when the outer
case is removed except when making the "live" tests
called for in the Service Manual. Do not reach into
the equipment area while the unit is energized.
Make all connections for the test and check them for
tightness before plugging the cord into the outlet.
6. Always ground the capacitors on the magnetron filter
box and H. V. Capacitor with an insulated-handle
screwdriver before working in the high voltage area
of the equipment compartment. Some types of
failures will leave a charge in these capacitors and
the discharge could cause a reflex action which
could make you injure yourself.
©2002 Maytag Appliances Company
5
16021668 Rev. 0
Microwave Leakage Testing
!
Measurement With the Outer Panel
Removed
WARNING
Check for radiation leakage after servicing. Should the
leakage be more than 4mW/cm2 inform Maytag
immediately. After repairing or replacing any radiation
safety device, keep a written record for future
reference, as required by DHHS and HEW regulations.
This requirement must be strictly observed. In addition,
the leakage reading must be recorded on the service
repair ticket while in the customer’s home.
!
DANGER
Avoid contacting any high voltage components.
Whenever you replace the magnetron, measure for
radiation leakage before the outer panel is installed and
after all necessary components are replaced or
adjusted. Special care should be taken in measuring
around the magnetron.
Equipment
Measurement With a Fully Assembled Oven
• Electromagnetic radiation monitor
• 600 cc glass beaker
After all components, including the outer panel are fully
assembled, measure for radiation leakage around the
door periphery, the door viewing window, the exhaust
opening, and air inlet openings.
Procedure For Measuring Radiation
Leakage
Note before measuring -
Record Keeping and Notification After
Measurement
• Do not exceed meter full scale deflection. Leak
monitor should initially be set to the highest scale.
• To prevent false readings, the test probe should be
held by the grip portion of the handle only.
• The scan speed is equal to one inch per antenna
revolution or one inch per second if antenna speed is
unknown.
• Areas to be checked are all door seal areas and any
venting parts.
• Leakage with the outer panel removed...4mW/cm2 or
less.
• Leakage for fully assembled oven with door normally
closed ...4mW/cm2 or less.
• Leakage for a fully assembled oven (before the latch
switch (primary) is interrupted) while pulling the
door ... 4mW/cm2 or less.
1 . Pour 275 ±15 cc (9 oz ±1/2 oz) of 20 ±5°C (68 ±9°F)
water in a beaker which is graduated to 600 cc and
place the beaker in the center of oven.
2. Set the radiation monitor to 2450 MHz and use it
following the manufacturer’s recommended test
procedure to assure correct results.
3. While measuring the leakage, always use the 2–inch
(5 cm) spacer supplied with the probe.
4. Press the start pad or turn on the timer and with the
magnetron oscillating, measure the leakage by
holding the probe perpendicular to the surface being
measured.
16021668 Rev. 0
1. After any adjustment or repair to a microwave oven,
a leakage reading must be taken. Record this
leakage reading on the repair ticket even if it is zero.
2. A copy of the repair ticket and the microwave
leakage reading should be kept by the repair facility.
6
©2002 Maytag Appliances Company
General Information
Please read the owner’s manual information. It will tell
how to use all the features of this microwave oven.
Parts and Accessories
Purchase replacement parts and accessories over the
phone. To order accessories for your product call:
Location of Model Number
To request service information or replacement parts, the
service center will require the complete model number of
your microwave oven. The number is located on the
oven front as shown in the illustration below.
• For Amana product call 1-877-232-6771 or visit the
Web Site at www.amana.com
• For Maytag/Jenn-Air product call 1-800-462-9824 or
visit the Web Site at www.maytag.com or
www.jennair.com
• For product in Canada call 1-866-587-2002 or visit the
Web Sites at www.amana.com or www.maytag.com or
www.jennair.com
Model Number Label
Extended Service Plan
We offer long-term service protection for this new oven.
• Asure™ Extended Service Plan is specially designed
to supplement Amana’s strong warranty. This plan
covers parts, labor, and travel charges.
Call 1-866-232-6244 for information.
• Dependability PlusSM Extended Service Plan is
specially designed to supplement Maytag’s and
Jenn-Air’s strong warranty. This plan covers parts,
labor, and travel charges.
Call 1-800-925-2020 for information.
Model Identification
Complete enclosed registration card and promptly return.
If registration card is missing:
• For Amana product call 1-800-843-0304 or visit the
Web Site at www.amana.com
• For Maytag product call 1-800-688-9900 or visit the
Web Site at www.maytag.com
• For Jenn-Air product call 1-800-536-6247 or visit the
Web Site at www.jennair.com
• For product in Canada call 1-866-587-2002 or visit the
Web Sites at www.amana.com or www.maytag.com or
www.jennair.com
When contacting provide product information located on
rating plate. Record the following:
Model Number:
Manufacturing Number:
Serial or S/N Number:
Date of purchase:
Dealer’s name and address:
Oven Specifications ACO15* and MMV5156*
Models
Output Power
Outer Dimensions
Oven Cavity Dimensions
Cavity Volume
Net Weight
1000 W (IEC 705)
29-15/16" x 16-7/16" x 15-5/8"
19-7/8" x 14-3/16" x 15-3/8"
1.5 cu. ft.
65 lbs.
Oven Specifications ACO18*, MMV4184* and
MMV5186* Models
___________________
___________________
___________________
___________________
___________________
Output Power
Outer Dimensions
Oven Cavity Dimensions
Cavity Volume
Net Weight
Service
1000 W (IEC 705)
29-15/16" x 16-7/16" x 15-3/8"
22-3/8" x 10" x 14-19/32"
1.8 cu. ft.
65 lbs.
Keep a copy of sales receipt for future reference or in
case warranty service is required. To locate an authorized
servicer:
Oven Specifications JMV8196* Models
• For Amana product call 1-800-628-5782 or visit the
Web Site at www.amana.com
• For Maytag/Jenn-Air product call 1-800-462-9824 or
visit the Web Site at www.maytag.com or
www.jennair.com
• For product in Canada call 1-866-587-2002 or visit the
Web Sites at www.amana.com or www.maytag.com or
www.jennair.com
Warranty service must be performed by an authorized
servicer. We also recommend contacting an authorized
servicer, if service is required after warranty expires.
Electrical Requirements
©2002 Maytag Appliances Company
Output Power
Outer Dimensions
Oven Cavity Dimensions
Cavity Volume
Net Weight
850 W (IEC 705)
29-15/16" x 16-7/16" x 15-3/8"
22-3/8" x 10" x 14-19/32"
1.9 cu. ft.
65 lbs.
The oven is designed to operate on a Standard
120V / 60Hz household outlet. Be sure the circuit is at
least 20 Amps and the microwave oven is the only
appliance on the circuit.
NOTE: It is not designed for 50Hz or any circuit other
than a 120V / 60Hz circuit.
7
16021668 Rev. 0
General Information
Grounding Instructions
This appliance must be grounded. If an electrical short
circuit occurs, grounding reduces the risk of electric
shock by providing an escape wire for the electric
current. The cord for this appliance has a grounding wire
with a grounding plug. Put the plug into an outlet that is
properly installed and grounded.
!
Properly Polarized and
Grounded Outlet
WARNING
To avoid risk of electric shock, personal injury or death,
use grounding plug properly.
Three-Pronged (Grounding) Plug
For a permanently connected appliance: This appliance
must be connected to a grounded, metallic, permanent
wiring system, or an equipment grounding conductor
should be run with the circuit conductors and connected
to the equipment grounding terminal or lead on the
appliance.
Ask a qualified electrician if you do not understand the
grounding instructions or if you wonder whether the
appliance is properly grounded.
Because this appliance fits under the cabinet, it has a
short power-supply cord. See the Installation Instructions
for directions on placing the cord properly. Keep the
electrical power cord dry and do not pinch or crush it in
any way.
Microwave Oven Description
Model and serial
number plate
Window with
metal shield
Door handle
Vent grille
Glass turntable
Cooking guide
Oven control
panel
Door safety
lock system
Cooktop/countertop light
Grease filter
16021668 Rev. 0
8
©2002 Maytag Appliances Company
Testing Procedures
! WARNING
Disconnect power before performing the following
procedures unless testing requires it.
NOTES:
• Perform microwave energy leakage test if unit is
serviced for any reason.
• Verify wire leads are connected to correct positions.
• When removing wire terminal plugs from connectors,
grasp the connector, not the wires.
Interlock Monitor Switch Test
When the door is opened slowly, an audible click should
be heard. If the latch does not activate the switch when
the door is closed, the switch should be adjusted in
accordance with the adjustment procedure.
1. Disconnect power to oven and remove control panel,
(see “Control Panel” section in Disassembly
Procedure).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" section in Disassembly Procedure).
3. Disconnect wire leads from switch.
4. Perform a continuity test by connecting one meter
lead on COM terminal and the other meter lead on
NC terminal.
Readings should be as follows:
Door closed ................. Infinite ohms
Door opened ............... 0 ohms
Primary Interlock Switch Test
When the door is opened slowly, an audible click should
be heard. If the latch does not activate the switch when
the door is closed, the switch should be adjusted in
accordance with the adjustment procedure.
1. Disconnect power to oven and remove control panel,
(see “Control Panel” section in Disassembly
Procedure).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" section in Disassembly Procedure).
3. Disconnect wire leads from switch.
4. Perform a continuity test by connecting one meter
lead on COM terminal and the other meter lead on
NO terminal.
Readings should be as follows:
Door closed ................. 0 ohms
Door opened ............... Infinite ohms
NOTE: When replacing component use identical
replacement part.
NOTE: After repairing the door or the interlock system,
it is necessary to do a continuity test before
operating the oven.
Magnetron
NOTE: When replacing component use identical
replacement part.
1. Disconnect power to oven and remove control panel,
(see “Control Panel” section in Disassembly
Procedure).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" section in Disassembly Procedure).
3. Disconnect wire leads to magnetron.
4. Measure the resistance across filament terminals of
the magnetron.
Reading should be less than 1 ohm.
5. Measure the resistance from each filament terminal
to ground. Reading should indicate infinite ohms.
NOTE: After repairing the door or the interlock system,
it is necessary to do a continuity test before
operating the oven.
Secondary Interlock Switch Test
When the door is opened slowly, an audible click should
be heard. If the latch does not activate the switch when
the door is closed, the switch should be adjusted in
accordance with the adjustment procedure.
NOTE: Any other readings then what should be
indicated, magnetron needs to be replaced.
1. Disconnect power to oven and remove control panel,
(see “Control Panel” section in Disassembly
Procedure).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" section in Disassembly Procedure).
3. Disconnect wire leads from switch.
4. Perform a continuity test by connecting one meter
lead on COM terminal and the other meter lead on
NO terminal.
Readings should be as follows:
Door closed ................. 0 ohms
Door opened ............... Infinite ohms
NOTE: Replace the magnetron, if magnetron
indications are good and all other high voltage
components test good, but the unit still does not
heat a load.
High Voltage Transformer
1. Disconnect power to oven and remove control panel,
(see “Control Panel” section in Disassembly
Procedure).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" section in Disassembly Procedure).
3. Disconnect wire leads to high voltage transformer.
NOTE: When replacing component use identical
replacement part.
NOTE: After repairing the door or the interlock system,
it is necessary to do a continuity test before
operating the oven.
©2002 Maytag Appliances Company
9
16021668 Rev. 0
Testing Procedures
! WARNING
Disconnect power before performing the following
procedures unless testing requires it.
4. Measure resistance of the terminals on the high
voltage transformer with meter on R x 1 scale.
Reading should be indicated as follows:
Primary winding ......less than 1.0 ohms
Filament winding ....less than 1.0 ohms
Secondary winding . approximately 50 to 120 ohms
5. Measure resistance of the terminals on the high
voltage transformer with meter on high scale.
Reading should be indicated as follows:
Primary winding to ground ....... Infinite ohms
Filament winding to ground ..... Infinite ohms
4. Measure the following terminals with meter on
R x 1000 scale.
Normal indication:
Terminal 1 to terminal 2 ......... 4.5K to 6.2K ohms
Terminal 2 to terminal 3 ........ 2.0K to 3.5K ohms
Terminal 1 to terminal 3 ........ 2.0K to 3.5K ohms
Abnormal indication:
Infinite or several ohms
Relay
1. Disconnect power to oven and remove control panel,
(see “Control Panel” section in Disassembly
Procedure).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" section in Disassembly Procedure).
3. Disconnect wire terminal plug from control board
(ACO18*, RY2) (ACO15*, RY7), and operate the
unit.
High Voltage Capacitor
1. Disconnect power to oven and remove control panel,
(see “Control Panel” section in Disassembly
Procedure).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" section in Disassembly Procedure).
3. Disconnect wire leads to high voltage capacitor.
4. Measure resistance of capacitor from terminal to
terminal.
• Normal reading—momentarily indicates several
ohms and then gradually returns to infinite ohms.
• Abnormal reading—Indicates continuity or infinite
ohms.
5. Measure resistance of capacitor from terminal to
case.
• Normal reading—Indicates infinite ohms
• Abnormal reading—Indicates continuity
Rela y 2
High Voltage Diode
1. Disconnect power to oven and remove control panel,
(see “Control Panel” section in Disassembly
Procedure).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" section in Disassembly Procedure).
3. Disconnect wire leads to high voltage diode.
4. Measure resistance of diode in forward bias.
• Normal reading—Indicates continuity
• Abnormal reading—Indicates infinite ohms
5. Measure resistance of diode in reverse bias.
• Normal reading—Indicates infinite ohms
• Abnormal reading—Indicates continuity
Power Level
Humidity Sensor
1. Disconnect power to oven and remove control panel,
(see “Control Panel” section in Disassembly
Procedure).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" section in Disassembly Procedure).
3. Disconnect wire terminal plug from control board
(CN5).
16021668 Rev. 0
Cycles On for:
Cycles Off for:
1
4 seconds
18 seconds
2
6 seconds
16 seconds
3
8 seconds
14 seconds
4
10 seconds
12 seconds
5
12 seconds
10 seconds
6
14 seconds
8 seconds
7
16 seconds
6 seconds
8
18 seconds
4 seconds
9
20 seconds
2 seconds
10
22 seconds
0 seconds
Control Key Panel
1. Disconnect power to oven and remove control panel,
(see “Control Panel” section in Disassembly
Procedure).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" section in Disassembly Procedure).
10
©2002 Maytag Appliances Company
Testing Procedures
! WARNING
Disconnect power before performing the following
procedures unless testing requires it.
3. Disconnect ribbon connector by siding top part of
connector upward. Once in released position remove
ribbon from connector by siding ribbon side-to-side.
ACO1560/MMV5156 models continued
Easy Cook
Time Defrost
Start
Sensor Potato
Sensor Popcorn
Program
NOTE: Caution should be used when removing cable
from connector. Ribbon cable has two holes
which holds the lock ribbon in place.
NOTE: Circuit board has numbers 1 and 13 on it for
identification.
3 - 10
3 - 11
3 - 12
3 - 13
4 - 13
5-8
1
2
3
4
Sensor Cook
7-9
7 - 10
7 - 11
7 - 12
7 - 13
Pad
Beverage
Pizza
Rapid Defr. 1lb.
Program
Auto Defrost
Kitchen Timer
Power Level
Hold Warm
5
6
7
8
9
0
1
2
3
4
Conn.
4 - 10
4 - 11
4 - 12
5- 8
5- 9
5 - 10
5 - 11
5 - 12
6- 8
6- 9
6 - 10
6 - 11
6 - 12
7- 8
7- 9
7 - 10
7 - 11
7 - 12
ACO1840/MMV4184 models
1
2
3
4
5
6
7
8
9
10
11
12
13
Pad
Vent HI/LOW/OFF
Light HI/LOW/OFF
Less
Favorite Recipe
Turn Table ON/OFF
More
Help
Control Setup
Clock
Light Timer
Stop Clear
Cook
Reheat
Easy Cook
Time Defrost
Start
Popcorn
Potato
ACO1520/ACO1530 models
Pad
Vent HI/LOW/OFF
Light HI/LOW/OFF
Control Setup
Clock
Stop Clear
Auto Cook
Auto Reheat
Easy Cook
Start
Frozen Entree
Popcorn
Potato
Beverage
Pizza
Program
Conn.
1-8
1-9
2-9
2 - 10
2 - 12
3-8
3-9
3 - 10
3 - 12
3 - 13
4-8
4-9
4 - 10
4 - 11
5-8
Pad
Auto Defrost
Kitchen Timer
Power Level
Hold Warm
5
6
7
8
9
0
1
2
3
4
Conn.
5-9
5 - 10
5 - 11
5 - 12
6-8
6-9
6 - 10
6 - 11
6 - 12
7- 8
7- 9
7 - 10
7 - 11
7 - 12
ACO1860/MMV5186/JMV8196 models
Pad
Vent HI/LOW/OFF
Light HI/LOW/OFF
Less
Favorite Recipe
Turn Table ON/OFF
More
Help
Control Setup
Clock
Light Timer
Stop Clear
Sensor Pizza
Easy Cook
Time Defrost
Start
Sensor Potato
Rapid Defrost 1 lb.
Sensor Popcorn
ACO1560/MMV5156 models
Pad
Vent HI/LOW/OFF
Light HI/LOW/OFF
Less
Favorite Recipe
T/Table ON/OFF
More
Help
Control Set-Up
Clock
Light Timer
Stop Clear
Sensor Pizza
Conn.
1-8
1-9
1 - 10
1 - 11
1 - 12
1 - 13
2-8
2-9
2 - 10
2 - 11
2 - 12
2 - 13
©2002 Maytag Appliances Company
Pad
Auto Defrost
Kitchen Timer
Power Level
Hold Warm
Sensor Veg.
5
6
7
8
9
Sensor Reheat
0
Conn.
1-8
1-9
1 - 10
1 - 11
1 - 12
1 - 13
2-8
2-9
2 - 10
2 - 11
2 - 12
3-8
3-9
3 - 10
3 - 11
3 - 12
4-8
4-9
Conn.
5-9
5 - 10
5 - 11
5 - 12
5 - 13
6-8
6-9
6 - 10
6 - 11
6 - 12
6 - 13
7-8
11
Conn.
1-8
1-9
1 - 10
1 - 11
1 - 12
1 - 13
2-8
2-9
2 - 10
2 - 11
2 - 12
2 - 13
3 - 10
3 - 11
3 - 12
3 - 13
4 - 12
4 - 13
Pad
Program
Auto Defrost
Kitchen Timer
Power Level
Hold Warm
Sensor Veg.
5
6
7
8
9
Sensor Reheat
0
1
2
3
4
Sensor Cook
Conn.
5- 8
5- 9
5 - 10
5 - 11
5 - 12
5 - 13
6- 8
6- 9
6 - 10
6 - 11
6 - 12
6 - 13
7- 8
7- 9
7 - 10
7 - 11
7 - 12
7 - 13
16021668 Rev. 0
Testing Procedures
! WARNING
Disconnect power before performing the following
procedures unless testing requires it.
Circuit Board
Oven Thermostat
Following symptoms indicate a failed circuit board.
1. Disconnect power to oven and remove control panel,
(see "Control Panel" section).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" section).
3. Remove outer case, (see "Outer Case" section).
4. Lift air duct securing thermostat to oven cavity.
5. Disconnect wires from oven thermostat.
6. Following is temperature setting for the thermostat.
• High voltage systems, interlock switches, door sensing
and relay indicate good, but start function fails to
operate.
• Continuously operating with a normal relay.
• Proper temperature measurement is not obtained.
• Buzzer does not sound or sounds continuous.
• Segments of one or more digits do not light, or
continue to light or segments light when they should
not.
• Wrong figures appear in the display.
• All segments light up.
• Some of the indicators light up or flicker.
• Clock does not keep time properly.
Model
ACO15*
MMV5156*
ACO18*
MMV4184*
MMV5186*
JMV8196*
Fahrenheit
194°F
32°F
Centigrade
90°C
0°C
Cycle
OFF
ON
230°F
32°F
110°C
0°C
OFF
ON
Base Thermostat – ACO18*/MMV4184*/
MMV5186*/JMV8196* only
Fuse
!
1. Disconnect power to oven and remove control panel,
(see "Control Panel" section).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" section).
3. Remove screws securing thermostat to base plate
and disconnect wires from thermostat.
4. Following is temperature setting for the thermostat.
CAUTION
Before replacing a blown monitor fuse, test the primary
interlock switch, secondary interlock switch, monitor
switch, and power relay contacts for proper operation.
If the monitor fuse is blown by a failed switch
operation, all switches and printed circuit board must
be replaced.
Problem:
• Fuse blows immediately after oven door is opened or
closed.
• Improper operation of primary, secondary and/or
monitor switches.
• Fuse blows when oven door is closed and START pad
is pressed.
• Malfunction of the high voltage transformer, high
voltage capacitor including the diode, magnetron,
blower motor or circuit board.
Magnetron Thermal Fuse – ACO18*/
MMV4184*/MMV5186*/JMV8196* only
1. Disconnect power to oven and remove control panel,
(see "Control Panel" section).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" section).
3. Remove outer case, (see "Outer Case" section).
4. Remove screws securing thermal fuse to fan motor.
5. Disconnect wires from magnetron thermal fuse.
6. Following is temperature setting for the thermostat.
Fahrenheit Centigrade
228°F
109°C
Fan Motor
1. Disconnect power to oven and remove control panel,
(see “Control Panel” section in Disassembly
Procedure).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" section in Disassembly Procedure).
3. Disconnect wire leads to fan motor.
4. Measure resistance of the terminals on the fan motor
with meter on R x 1 scale.
Normal indication:
Terminal A to terminal C ........ 140 to 150 ohms
Terminal A to terminal B ........ 25 to 40 ohms
16021668 Rev. 0
Surge Resistor
This resistor prevents the oven from tripping circuit
breakers and blowing fuses during start up.
1. Disconnect power to oven and remove control panel,
(see "Control Panel" section).
2. Disconnect wire terminals to the resistor and
measure resistance of the resistor.
• Normal reading—approximately 15 ohms.
• Abnormal reading—Indicates infinite ohms.
12
©2002 Maytag Appliances Company
Troubleshooting Procedures
"PLEASE TOUCH TIME OF DAY"
does not appear in
the display,
when unit is plugged in.
1. Check power supply.
2. Check fuse.
3. Check oven thermostat.
Measure voltage
between pin 1
and pin 3 of
CN1 connector
YES
Is 120 volts
indicated.
Replace
circuit
board.
NO
Verify proper
connection of
circuit board.
Display does not
indicate correct number
pressed or correct
indication when
programmed.
Is continuity
indicated when
key pad is
pressed.
Unit operates.
Measure resistance
of control key
panel after removing
ribbon connector.
YES
Verify proper
connection of
ribbon
connector.
NO
NO
Replace
control
key pad.
Key pad matrix is located in
“Testing Procedures” on page 11.
Does ribbon
connector have
proper
connection.
YES
Reconnect
ribbon connector
for proper
connection.
Replace
circuit
board.
Unit operates.
©2002 Maytag Appliances Company
13
16021668
Rev. 0
Troubleshooting Procedures
Check:
1. Touch Keypad.
Measure resistance of
CN2 between pin 1 and
pin 3 with door closed.
Display does not
count down when
START is pressed.
Is
continuity
indicated.
Verify proper
connection of
ribbon
connector.
YES
NO
NO
Adjust or
replace door
sensing
switch.
Reconnect
ribbon connector
for proper
connection.
Does ribbon
connector have
proper
connection.
YES
Replace
circuit
board.
Unit operates.
No buzzer sound when
pressing control pad
between stages or at
the end of cooking.
Verify normal
operation of
circuit board.
Replace
circuit
board.
Unit operates.
16021668 Rev. 0
14
©2002 Maytag Appliances Company
Troubleshooting Procedures
Check:
1. Air Vents.
Unit operates normal,
but little or no heating
is produced with an
oven load.
Does fan motor
operate when
START is
pressed.
Check if fan motor
operates when
START is pressed.
YES
Measure
resistance
of high voltage
capacitor.
NO
NO
Place a jumper
wire across
thermostat.
Does
fan motor
operate.
Replace high
voltage
capacitor.
Does capacitor have
correct resistance.
See to Testing
Procedures on
page 10.
YES
Replace
magnetron.
YES
Replace
thermostat.
NO
Unit operates.
Measure
resistance
of fan motor,
approximately
38 ohms.
Is the resistance
of fan motor
correct.
YES
Replace
circuit
board.
NO
Replace
fan motor.
©2002 Maytag Appliances Company
15
16021668
Rev. 0
Troubleshooting Procedures
Check:
1. Primary and Secondary Interlock Switches.
2. Thermostat.
Unit does not heat even
if display counts down
when START pad is
pressed for high power.
Does relay
contacts measure
correct resistance.
Check the
contacts of
RY2 relay.
YES
Verify proper
connection of
ribbon
connector.
NO
Replace
circuit
board.
Does ribbon
connector have
proper
connection.
NO
YES
Reconnect ribbon
connector for
proper
connection.
Replace
circuit
board.
Unit operates.
Unit does not heat even
if display counts down
when START pad is
pressed for high power.
Does transformer
have the correct
resistance.
NO
Replace
high voltage
transformer.
Unit operates.
Measure resistance of
high voltage transformer.
See to Testing
Procedures on page 10.
Measure
resistance
of high
YES
voltage capacitor.
See to
Testing Procedures
on page 10.
YES
NO
Measure
resistance of high
voltage diode.
See to
Testing Procedures
on page 10.
Replace
high voltage
transformer.
Replace
high
voltage
diode.
Replace
magnetron.
16021668 Rev. 0
Does capacitor
have correct
resistance.
16
Does diode
have correct
resistance
NO
YES
©2002 Maytag Appliances Company
Troubleshooting Procedures
Check:
1. Power Supply.
2. Fuse.
Ventilation fan does
not operate when
FAN HIGH/LOW pad
is pressed.
Does magnetron
thermal fuse and
oven thermostat have
the correct
resistance.
Measure resistance
of magnetron
thermal fuse and
oven thermostat.
YES
Verify proper
connection of
ribbon
connector.
YES
NO
NO
Test and
replace
failed
component.
Does ribbon
connector have
proper
connection.
Replace
circuit
board.
Reconnect ribbon
connector for
proper connection.
Replace
ventilation
fan.
NO
Does
unit
operate.
Unit operates.
YES
©2002 Maytag Appliances Company
17
16021668
Rev. 0
Disassembly Procedures
!
To avoid the risk of electrical shock, personal injury or
death; disconnect power to oven and discharge
capacitors before following any disassembly procedure.
WARNING
NOTE: All procedures are written for the ACO18*,
JMV8196*, MMV4184, and MMV5186* models.
Specific instruction for the ACO15*, MMV5156*
models are as described in the procedures.
Door Removal
1. Disconnect power to oven and remove grille, (see
"Grille" procedure).
2. Open the oven door, slowly raise the door evenly.
disengaging the pins at the top and bottom.
High voltage is present at the high voltage terminal of
the high voltage transformer during any cooking cycle.
NOTE: When aligning the door for assembly, the door
must be opened as much as possible.
It is neither necessary or advisable to attempt
measurement of the high voltage.
3. To place door back on unit, place bottom pin into
hole first and then align the top pin. Once pins are
aligned push door downward to lock into place.
4. Replace front grille to complete assembly.
Before touching any oven components or wiring, always
unplug the oven from its power source and discharge
capacitor.
Grille
The top full-width grille is removable for service to some
components, such as: humidity sensor, oven light, door
removal, flame sensor, vent motor capacitor, fuse,
control panel, and stirrer motor (some models).
Grille Removal
1. Disconnect power to oven.
2. Remove screws located in front on top of microwave
securing grille.
Door Disassembly
1. Disconnect power to oven and remove oven door,
(see "Door Removal" procedure).
2. Pry away choke cover, by placing a tool in the upper
right corner of the door and gently prying outward on
the choke cover. Continue to work around the door
casing until choke cover is completely loose.
!
3. Pull outward on the top portion of the grille releasing
the tabs.
4. Reassemble in reverse order.
To avoid property damage, care must be taken when
prying choke cover from oven door.
Door Assembly
!
3. Slide latch assembly upward and to the left to
release plastic tabs from door frame. Once latch
assembly is loose the spring may be disconnected
from the door frame.
4. Remove screws securing door handle and door
frame to door panel.
5. Remove door frame by releasing tabs around entire
door panel.
CAUTION
A microwave leakage test must be performed anytime
a door assembly is removed, replaced, disassembled
or adjusted for any reason.
16021668 Rev. 0
CAUTION
18
©2002 Maytag Appliances Company
Disassembly Procedures
!
To avoid the risk of electrical shock, personal injury or
death; disconnect power to oven and discharge
capacitors before following any disassembly procedure.
WARNING
6. Remove door handle by placing a hand on door panel
next to the top of the door handle. Twist door panel
towards the inside of door and pulling on the top
portion of the door handle in a quick jerking motion.
Control Panel
The control panel is made up of several components,
such as p.c. board and touch panel.
Control Panel Removal
1. Disconnect oven power and remove grille, (see
"Grille" section).
2. Remove screw located at the top of touch panel. Lift
control panel up and out to release bottom tab
connections.
3. Place control panel on a flat surface.
4. Reassemble in reverse order.
NOTE: When replacing door handle, the bottom portion
of the door handle must be inserted first.
7. Slide door glass to the right slightly, then push the
door glass upward to release the glass from the
track.
8. Reassemble in reverse order.
Door
Door frame
panel
Tape
seal
Choke
cover
Screw
Door
glass
Spring
P.C. Board
Latch
assembly
The p.c. board is located at the top on back of control
panel. Some boards has up to five connection plugs
which control the following:
Door
handle
!
CN1
FPC (S1)
Relay 7
CAUTION
Main power connector
Ribbon connector for key panel
Relay connector
Once outer door trim panel is removed the glass
panel is loose.
Control Panel
!
CAUTION
Screw
A microwave leakage test must be performed anytime
a door assembly is removed, replaced, disassembly,
or adjusted for any reason.
Circuit
Board
Power
Transformer
FPC (S-1)
connector
Relay 7
CN1
ACO1520*, ACO1530*, and MMV5156*
©2002 Maytag Appliances Company
19
16021668 Rev. 0
Disassembly Procedures
!
CN1
CN2
CN5
FPC (S1)
Relay 2
To avoid the risk of electrical shock, personal injury or
death; disconnect power to oven and discharge
capacitors before following any disassembly procedure.
WARNING
Control Key Panel
Main power connector
Primary switch
Humidity sensor (some models)
Ribbon connector for key panel
Relay connector
Screw
The key panel has one ribbon connection on the p.c.
board.
The key panel pads can be checked through a continuity
test. Operations of key pad can be checked by
measuring connections at end of ribbon, (using high
ohms scale).
Control Panel
Plastic fastener
Hook
Circuit
Board
Holes
(CN5)
FPC (S-1)
connector
(CN2)
CN5
CN2
Relay 2
F.P.C.
Power
Transformer
connector
Terminal
socket
CN1
Control Key Panel Removal
1. Disconnect power to oven.
2. Remove control panel, (see "Control Panel" section).
3. Discharge high voltage capacitor, (see "High Voltage
capacitor section).
4. Disconnect ribbon connector by sliding top part of
connector upward. Once in released position remove
ribbon from connector by siding ribbon side-to-side.
ACO1840*, ACO1860*, JMV8196*,
MMV4184*, and MMV5186*
P.C. Board Removal
1. Disconnect oven power and remove grille, (see
"Grille" procedure).
2. Remove control panel, (see "Control Panel"
procedure).
3. Discharge high voltage capacitor, (see "High Voltage
Capacitor" procedure).
4. Disconnect ribbon connector by sliding top part of
connector upward. Once in released position remove
ribbon from connector by siding ribbon side-to-side.
NOTE: Caution should be used when removing cable
from connector. Ribbon cable has two holes
which connector locks ribbon in place.
5. Peel failed key pad off and replace with new key pad.
6. Reassemble in reverse order.
NOTE: Caution should be used when removing cable
from connector. Ribbon cable has two holes
which connector locks ribbon in place.
Outer Case
NOTE: This procedure requires removal of unit.
5. Disconnect and mark the wire connectors from p.c.
board.
6. Remove screws securing p.c. board to control panel
assembly.
7. Reassemble in reverse order.
1. Disconnect power to oven and remove grille, (see
"Grille" procedure).
2. Remove oven door, (see "Door Removal"
procedure).
3. Remove screws securing air duct to outer case.
4. Remove screws securing outer case to the chassis.
5. Remove screws securing vent plate to outer case.
6. Remove screw securing power cord cover to outer
case and remove power cord cover (if equipped).
7. Slide outer case towards the rear of the unit, guide
power cord though outer case power cord hole.
8. Place outer case to the side, so no damage will
occur to the case.
NOTE: Do not flex p.c. board.
16021668 Rev. 0
20
©2002 Maytag Appliances Company
Disassembly Procedures
!
To avoid the risk of electrical shock, personal injury or
death; disconnect power to oven and discharge
capacitors before following any disassembly procedure.
WARNING
9. Reassemble in reverse order.
Interlock Door Latch Switches
Primary switch is operated by bottom latch pawl.
Interlock Switch Removal
1. Disconnect power to oven and remove control panel,
(see "Control Panel" procedure).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" procedure).
3. Test interlock switches before removing, (see Testing
Procedures).
4. Disconnect and label wire connections.
5. Remove interlock switch.
Vent plate
Power cord cover
Door
Mounting
plate
Outter case
Latch Board
Vent grille
Controller
Secondary Interlock Switch
WH (from H.V. Transformer)
WH (from Monitor S/W)
WH (from Oven Thermostat)
WH (from Cooktop Lamp)
Stirrer Assembly (some models)
Motor driven antenna assembly is located at the top of
the cavity, using a top feed wave guide.
Stirrer Blade Removal
1. Disconnect power to oven and open the oven door.
2. Carefully pry downward on the plastic rivets securing
the stirrer cover.
3. Rotate slightly and pull down on stirrer fan cover .
4. Reassemble in reverse order.
Monitor Interlock Switch
WH (from Secondary switch)
RD (from Relay 7)
Primary Interlock Switch
GN (from P.C.B)
YL (from P.C.B)
ACO15020*, ACO1530*, and MMV5156*
ACO1840*, ACO1860*, JMV8196*,
MMV4184*, and MMV5186*
©2002 Maytag Appliances Company
21
16021668 Rev. 0
Disassembly Procedures
!
To avoid the risk of electrical shock, personal injury or
death; disconnect power to oven and discharge
capacitors before following any disassembly procedure.
WARNING
5. Hold latch board securely for proper switch operation
and door fit, retighten screws.
6. Open the oven door slowly, watching the switches.
Verify switches release in the following order.
• Primary interlock switch
• Secondary interlock switch
• Monitor interlock switch
Latch Board
Secondary Interlock Switch
WH (from H.V. Transformer)
YL (from Fan Motor)
WH (from Power Cord)
WH (from Cooktop Lamp)
NOTE: Adjust the latch board until all switches operate
in proper sequence.
7. Close the oven door slowly, watching the switches.
Verify switches active in the following order.
• Monitor interlock switch
• Secondary interlock switch
• Primary interlock switch
8. When proper sequence of switch has been achieved,
tighten the latch board securely.
Monitor Interlock Switch
WH (from H.V. Transformer)
!
RD (from H.V. Transformer)
A microwave leakage test must be preformed anytime
a door assembly is removed, replaced, disassembled
or adjustment of latch board is made.
Primary Interlock Switch
PK (from P.C.B)
BL (from P.C.B)
High Voltage Capacitor
ACO1840*, ACO1860*, JMV8196*,
MMV4184*, and MMV5186*
!
High voltage capacitor should always be discharged by
shorting a terminal to a chassis ground. The capacitor
has a internal "shunt" resistor, but the mechanical
discharge should always be performed to avoid personal
injury.
CAUTION
Before replacing a blown monitor fuse, test the
primary interlock switch, secondary interlock switch,
monitor switch, and power relay contacts for proper
operation. If the monitor fuse is blown by a failed
switch operation, all switches and printed circuit board
must be replaced.
High Voltage Capacitor Removal
1. Disconnect power to oven and remove control panel,
(see "Control Panel" procedure).
2. Discharge high voltage capacitor by connecting a
jumper wire to the terminal of high voltage capacitor
with the diode connected to it. Connect the other
end of the jumper wire to a well insulated
screwdriver and touch a nearby chassis ground
screw.
3. Remove screws that secure capacitor and diode.
4. Slide capacitor mounting bracket out of the slots and
pull outward on capacitor, diode and bracket.
5. Reassemble in reverse order.
Adjusting Interlocks
The interlock monitor and primary switches act as a final
safety switch, protecting the operator from microwave
energy. After adjusting the interlock switches, verify
connections are correctly connected.
For door fit and switch operation, switch housing is
adjustable.
1. Disconnect power to oven and remove control panel,
(see "Control Panel" procedure).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" procedure).
3. Loosen switch housing mounting screws on vertical
flange.
4. Close oven door, move latch board upward toward
the top of the oven and/or away from the door latch
until gaps are less than 1/64–inch (0.5 mm).
16021668 Rev. 0
CAUTION
Diode
The diode is located next to the high voltage capacitor.
1. Disconnect power to oven and remove control panel,
(see "Control Panel" procedure).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" procedure).
3. Disconnect diode wire terminal from high voltage
capacitor and remove screw securing diode to
ground.
4. Reassemble in reverse order.
22
©2002 Maytag Appliances Company
Disassembly Procedures
!
To avoid the risk of electrical shock, personal injury or
death; disconnect power to oven and discharge
capacitors before following any disassembly procedure.
WARNING
Transformer
Magnetron
High voltage transformer can be serviced through the
front of the unit.
Magnetron is mounted on the side of the cavity to
provide a top feed single waveguide.
Power Transformer Removal
1. Disconnect power to oven and remove control panel,
(see "Control Panel" procedure).
1. Disconnect power to oven and remove grille, (see
"Grille" procedure).
2. Remove control panel, (see "Control Panel"
procedure).
NOTE: On the ACO15* and MMV5156* models, remove
the metal protector located above control panel.
NOTE: On the ACO15* and MMV5156* models, remove
the metal protector located above control panel.
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" procedure).
3. Disconnect and label wire leads from transformer.
4. Remove screws securing transformer and remove
out through the front.
5. Reassemble in reverse order.
3. Remove outer case, (see "Outer Case" procedure).
4. Discharge high voltage capacitor, (see "High Voltage
Capacitor" procedure).
5. Remove screws securing magnetron to the wave
guide.
6. Carefully remove the magnetron.
7. Reassemble in reverse order.
Fuse
NOTE: When replacing the magnetron, make sure the
gasket is in the correct position and in good
condition.
On the ACO15* and MMV5156* models the fuse is
located behind the grille in line with the power cord on the
right side of the unit.
!
On the ACO18*, JMV8196*, MMV4184*, and MMV5186*
models the fuse is located behind the grille on the right
side attached to the air duct.
Fuse Removal
1. Disconnect power and remove grille, (see "Grille
procedure).
2. Remove and replace fuse and reassemble in reverse
order.
!
CAUTION
During replacement of magnetron, be certain the R.F.
anode gasket is in place around anode stud.
!
WARNING
A microwave leakage test must be performed anytime
a magnetron assembly is removed, replaced,
disassembled or adjusted for any reason.
CAUTION
Before replacing a blown monitor fuse, test the
primary interlock switch, secondary interlock switch,
monitor switch, and power relay contacts for proper
operation. If the monitor fuse is blown by a failed
switch operation, all switches and printed circuit board
must be replaced.
Magnetron Fan Assembly
Magnetron fan motor provides cool air circulation from
an external air source, which provides direct cool air
through air vanes surrounding the magnetron. This
assembly is located above the magnetron.
Magnetron Fan Removal
1. Follow steps 1 through 4 of "Magnetron" procedure.
2. Remove fan blade from fan motor.
3. Remove screws securing fan motor to air duct.
4. Disconnect wires from fan motor, and lift fan motor
assembly out.
5. Reassemble in reverse order.
©2002 Maytag Appliances Company
23
16021668 Rev. 0
Disassembly Procedures
!
To avoid the risk of electrical shock, personal injury or
death; disconnect power to oven and discharge
capacitors before following any disassembly procedure.
WARNING
Magnetron Thermal Fuse
Oven Thermostat
NOTE: Thermal fuse is not resettable.
The oven thermostat is on the air duct assembly.
Thermostat is a resettable thermostat.
1. Disconnect power to oven and remove control panel,
(see "Control Panel" procedure).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" procedure).
3. Remove outer case, (see "Outer Case" procedure).
4. Disconnect and label wire terminals.
5. Remove screw securing thermal fuse to cooling fan.
6. Replace and reassemble in reverse order.
1. Disconnect power to oven and remove control panel,
(see "Control Panel" procedure).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" procedure).
3. Remove outer case, (see "Outer Case" procedure).
4. Disconnect wire terminals from oven thermostat.
NOTE: On ACO15* and MMV5156* oven thermostat is
used as magnetron thermal fuse as well.
Magnetron Thermal Fuse
Fan Motor
Humidity Sensor
The sensor is a plug-in device located in the air exhaust
duct.
NOTE: On ACO18*, JMV8196*, MMV4184*, and
MMV5186* lift upward on left rear corner of air
duct to release oven thermostat.
Humidity Sensor Removal
1. Disconnect power to oven and remove control panel,
(see "Control Panel" procedure).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" procedure).
3. Remove outer case, (see "Outer Case" procedure).
4. Remove screws securing sensor to air duct.
5. Disconnect wire terminal plug and replace with new
sensor.
6. Reassemble in reverse order.
5. Replace and reassemble in reverse order.
16021668 Rev. 0
24
©2002 Maytag Appliances Company
Disassembly Procedures
!
To avoid the risk of electrical shock, personal injury or
death; disconnect power to oven and discharge
capacitors before following any disassembly procedure.
WARNING
3. Open the oven door, remove turntable, and gently pry
upward on turntable shaft.
4. Disconnect wire leads from turntable motor.
Base Thermostat
The base thermostat is located behind the control panel
assembly.
NOTE: Thermostat is a resettable thermostat.
1. Disconnect power to oven and remove control panel,
(see "Control Panel" procedure).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" procedure).
3. Remove screws securing thermostat to base plate
and disconnect wires from thermostat.
4. Reassemble in reverse order.
Wire leads
Turntable motor
5. Remove screws securing turntable to the oven cavity.
6. Replace and reassemble in reverse order.
Vent Blower
Vent blower is a two speed (HI-LOW) capacitor run
blower assembly located on top of the oven. The blower
is operated by voltage relays located on the p.c. board.
Vent Exhaust Blower Removal
1. Disconnect power to unit and remove unit from its
installation.
2. Remove screws securing damper and motor
assembly to top and back of unit.
Blower
plate
Light Socket
Blower
unit
1. Disconnect power to oven and remove grille, (see
"Grille" procedure).
2. Remove screws securing bulb holder.
3. Remove light bulb. Remove light socket.
4. Disconnect wire terminal plug.
5. Replace and reassemble in reverse order.
B
B
Blower unit
mounting screw
Turntable Motor
3. Remove damper.
4. Lift blower assembly out and disconnect wire
connection wire terminal.
1. Disconnect power to oven.
2. Remove screws securing bottom plate cover.
5. Reassemble in reverse order.
NOTE: Place blower assembly wires in slotted area to
avoid pinching of wires.
©2002 Maytag Appliances Company
25
16021668 Rev. 0
Wiring Diagram and Schematic
!
To avoid the risk of electrical shock, personal injury or
death; disconnect power to oven and discharge
capacitors before following any disassembly procedure.
WARNING
ACO1520* and ACO1530* Models
16021668 Rev. 0
26
©2002 Maytag Appliances Company
Wiring Diagram and Schematic
!
To avoid the risk of electrical shock, personal injury or
death; disconnect power to oven and discharge
capacitors before following any disassembly procedure.
WARNING
ACO1560* and MMV5156* Models
©2002 Maytag Appliances Company
27
16021668 Rev. 0
Wiring Diagram and Schematic
!
To avoid the risk of electrical shock, personal injury or
death; disconnect power to oven and discharge
capacitors before following any disassembly procedure.
WARNING
ACO18*, JMV8196*, MMV4184, and MMV5186* Models
16021668 Rev. 0
28
©2002 Maytag Appliances Company
Installation Instruction
Appendix A
©2002 Maytag Appliances Company
A–1
16021668 Rev. 0
Installation Instruction
Proper installation is the installer’s responsibility!
Write the model & serial numbers on the owner’s
manual. The model number label is located on the oven
front.
Model Number Label
Electrical rating of this oven: 120V AC 60Hz.
• 13 A / 1500 W (Microwave oven, Cooktop Lamps,
Ventilation Fan)
• You need a DEDICATED 120VAC / 60Hz / 20A, fused
electrical supply (located in the cabinet above the
microwave as close as possible to the microwave)
serving only the microwave.
!
WARNING
To avoid risk of electrical shock, personal injury or
death; do not use the grounding plug improperly.
The mounting plate is located on the back side of the
microwave oven.
Mounting
plate
(Remove from
back of oven)
The dimensions of the oven are as follows:
ACO15* Models
ACO18* Models
7
• Height : 16 /16 in.
16 7/16 in.
15
• Width : 29 /16 in.
29 15/16 in.
15 1/2 in.
• Depth : 15 3/8 in.
• Weight : 52 lbs.
60 lbs.
!
• Check with a qualified electrician if you are not sure
whether the oven is properly grounded or if you do not
completely understand the grounding instructions.
• Do not use a fuse in the neutral or grounding circuit.
• Save these instructions for the local electrical
inspector’s use.
• This appliance MUST be grounded!
• If there is an electrical short circuit, grounding
reduces the risk of electrical shock by providing an
escape wire for the electric current. This appliance
is equipped with a cord having a grounding wire with
a grounding plug.
• Place the plug into a properly installed and grounded
outlet.
• Do not use an extension cord.
• Keep the power cord dry and do not pinch or crush.
• Do not, under any circumstances, remove the power
supply cord grounding prong.
Properly Polarized and
Grounded Outlet
CAUTION
To avoid risk of personal injury two people are
required to install this oven.
Three-Pronged (Grounding) Plug
Avoid Electrical Shock!
• Before you drill into the wall, note where electrical
outlets are and where electrical wires might be
concealed behind the wall. YOU COULD GET AN
ELECTRIC SHOCK if you contact electrical wires
with your drill bit.
• Locate and disconnect the power to any electrical
circuits that could be affected by installing this oven.
IF YOU DO NOT DISCONNECT THE POWER,
YOU COULD GET AN ELECTRIC SHOCK.
16021668 Rev. 0
A–2
©2002 Maytag Appliances Company
Installation Instruction
!
!
WARNING
If you do not mount the oven as instructed, you risk
personal injury and/or property damage.
If you do not use the microwave oven as instructed,
you could be exposed to excessive microwave
energy.
Do not expose yourself to excessive microwave
energy!
• DO NOT try to operate the microwave oven with the
door open.
• DO NOT tamper with or defeat the safety interlocks.
• DO NOT place objects between the microwave oven
front face and the door.
• DO NOT allow soil or cleaner residue to build up on
the flat surfaces around the microwave oven door.
• DO NOT operate the microwave oven if it is damaged.
• The microwave oven door must close properly to
operate safely.
• DO NOT USE THE MICROWAVE OVEN:
• If the door is bent.
• If the hinges or latches are broken or loose.
• If the door seals, sealing surfaces or glass is
broken.
• DO NOT ATTEMPT TO ADJUST OR REPAIR THE
OVEN YOURSELF!
• It should be adjusted and repaired by a qualified
technician who can check for microwave leakage
after repairing the oven.
WARNING
!
CAUTION
Before you begin installing the oven, PLACE A PIECE
OF THE CARTON OR OTHER HEAVY MATERIAL (a
blanket) over the countertop or cooktop to protect it.
Do not use a plastic cover. Failure to protect these
surfaces could result in property damage.
Make sure you have enough space and support.
• Mount the oven against a flat, vertical wall, so it is
supported by the wall. The wall should be constructed
of minimum 2" x 4" wood studding and 3/8" thick
drywall or plaster/lath.
• ATTACH AT LEAST ONE of the two lag screws
supporting the oven to a vertical, 2" x 4" wall stud.
• DO NOT mount the microwave oven to an island or
peninsula cabinet.
• BE SURE the upper cabinet and rear wall structures
are able to support 150 lbs., plus the weight of any
items you place inside the oven or upper cabinet.
• Locate the oven away from strong draft areas, such as
windows, doors, and strong heating vents.
• BE SURE you have enough space. See illustration
below for minimum vertical and horizontal clearance.
• This microwave oven can be installed over gas or
electric cooking products no more than 36 inches
wide.
Grounded Outlet
(inside upper cabinet)
Power Supply Cord Hole
30" min. cabinet
opening width
13 - 9/16" min. microwave oven
to cooking surface or
countertop
30" min. clearance from bottom
of cabinet to cooking surface
or countertop
(Use templates included
with installation instructions)
Maximum gas or electric
cooking product width of
36 inches.
©2002 Maytag Appliances Company
A–3
16021668 Rev. 0
Installation Instruction
Parts, Tools, and Materials
The following parts are supplied with the oven:
NOTE: Depending on ventilation requirements, not all parts will be used.
Backdraft damper / duct connector
(for roof-venting or wall-venting installation)
Not Actual Size ( 2 pieces must be
assembled as shown )
One power cord clamp and
One dark-colored mounting screw
(to hold the power cord)
Actual Size
One lock pin and one washer-
Two self - tapping screws
(for attaching the damper duct connector)
One power cord clamp bushing (for the cord hole in a metal upper cabinet)
Four 1/4" x 2" lag screws (for wall stud holes)
Four 1/4" x 3" toggle bolts (for drywall holes)
Two 1/4" x 2" bolts (for securing to the upper cabinet)
Four spring toggle heads (for the toggle bolts)
Two washers (for the two upper cabinet bolts)
NOTE: Install at least two lag screws into one 2” X 4” stud and four anchor bolts into the wall.
The mounting area must meet the 150 lbs. weight requirement.
Tools and materials required for installation:
List of tools include: Stud finder or thin nail, Saber saw, Keyhole saw, Electric drill, Phillips and Flat blade
screwdriver, Pencil, Tape measure (metal), Plumb line, Tin snips, Caulking gun, Duct tape, Clear tape, Wood and
Metal drill bits.
NOTE: Use the carton or heavy material for covering the counter top.
NOTE: Ductwork required for installation is not included. All wall and roof caps must have a back-draft damper.
16021668 Rev. 0
A–4
©2002 Maytag Appliances Company
Installation Instruction
Preparing Electrical Connection
!
Roof Venting
WARNING
Roof cap
To avoid risk of electrical shock, this appliance must
be grounded.
3 1/4"x10"
duct
1. Locate grounded electrical outlet for oven in the
cabinet above the oven.
NOTE: Outlet should be on a circuit dedicated to the
microwave oven (120 VAC, 60 Hz) with a
20 Amp fused electrical supply.
Through-the-roof
Roof venting
Roof cap
NOTE: If proper wall outlet is not present, one must be
installed by a qualified electrician.
6"
Diameter
round duct
2. Power supply cord hole will be cut later when
preparing the wall and upper cabinet.
Upper
Cabinet
3 1/4" to round
duct transition
Grounded Outlet
(inside upper cabinet)
Wall Venting
Oven is located on an outside wall of house.
Wall Venting
Power Supply Cord Hole
NOTE: Do not use extension cord. Keep power cord dry
and do not pinch or crush.
Wall cap
Preparing Venting System
Oven may be vented in one of three ways.
NOTE: Do not vent oven into a wall cavity, an attic or an
unused area.
!
Wall venting
3 1/4"x10" Through-the-wall
duct
Elbow
WARNING
Wall cap
To avoid risk of fire, personal injury or property
damage, oven must be properly vented.
3 1/4" to round
duct transition
NOTE: Duckwork needed for outside ventilation is not
included with oven.
Roof-Venting
Oven is located on an outside wall near roof.
©2002 Maytag Appliances Company
A–5
16021668 Rev. 0
Installation Instruction
Room Venting
Oven is located on an inside wall of house.
To calculate the equivalent length of each duct piece
used, see examples below.
Room Venting
For 3 1/4"x10" Systems
3 1/4"x10"
90 elbow
6ft.
wall cap
2ft.
1-3 1/4" x 10" 90 elbow
1-Wall Cap
8 feet straight duct
Total Length
NOTE: Remember the following when installing venting.
• Keep length of ductwork and the number of
elbows to a minimum to ventilate oven
efficiently.
• Keep the size of the ductwork the same.
• Do not install two elbows together.
• Use duct tape to seal all joints in the ductwork
system.
• Use caulking to seal exterior wall or roof
opening around the cap.
=
=
=
=
For 6" Round Systems
90 elbows
transition
6ft.
NOTE: If existing ductwork is round, a rectangular-toround adapter must be used with a rectangular
3" extension duct installed between the damper
assembly and adapter to prevent the exhaust
damper from sticking.
wall cap
2ft.
1-transition
2-90 elbows
1-Wall Cap
8 feet straight
Total Length
Standard Fittings
25 ft.
40 ft.
8 ft.
73 ft.
=
=
=
=
=
5 ft.
20 ft.
40 ft.
8 ft.
73 ft.
Ductwork Length
The total length of the ductwork system, including
straight duct, elbows, transitions, and wall or roof cap
must not exceed the equivalent of 140 feet.
For best performance, do not use more than three 90°
elbows and keep the length as short as possible.
Following are standard fittings and their equivalent
length in feet.
1
2
3 1/4"x10"
to 6"=5ft.
4
3
3 1/4"x10" roof
cap=24ft.
5
90 elbow
=10ft.
6
3 1/4"x10"
wall cap
=40ft.
16021668 Rev. 0
3 1/4"x10" 90
elbow=25ft.
7
45 elbow
=5ft.
3 1/4"x10"
flat elbow
=10ft.
A–6
©2002 Maytag Appliances Company
Installation Instruction
Preparing Venting Blower
!
WARNING
To avoid risk of electrical shock or personal injury,
disconnect power to unit before working on vent
blower.
Blower
unit
Exhaust
ports
NOTE: Do not pull or stretch blower wiring. Pulling or
stretching blower wiring could result in electrical
wiring damage.
5. Reconnect blower motor terminal plug, making sure
the wire is under the supporter.
Microwave oven is shipped with blower assembly for
roof venting. If wall or room venting installation is
desired, blower assembly must be changed.
Supporter
1. Remove screws securing mounting plate to oven
cabinet and set side.
2. Replace screws back into oven cabinet.
B
B
Replace screws
into cabinet.
Blower
wire
6. Place blower unit back into cabinet. Verify exhaust
ports face towards the rear and are aligned with the
holes in the back of the unit.
Remove
mounting
plate.
Roof Venting Installation
Blower venting is assembled at the factory for roof
venting. Proceed to “Wall and Upper Cabinet
Installation” section.
Wall Venting Installation
1. Remove blower unit mounting screw and blower
plate screws (save screws for step 8). Remove
blower plate from cabinet.
Blower
plate
Blower
unit
Exhaust
ports
7. Remove knockouts marked B (see step 1 for
illustration) from back plate and discard. Be careful
not to distort back plate.
8. Attach blower plate to cabinet with exhaust ports and
blower plate opening aligned. Secure blower unit
with screws that were removed in step 1.
Room Venting Installation (Recirculating)
1. Remove blower unit mounting screw and blower
plate screws (save screws for step 5). Remove
blower plate from cabinet.
Blower
plate
B
B
Blower
unit
Blower unit
mounting screw
B
B
2. Carefully lift blower unit out of oven cabinet.
3. Disconnect blower motor terminal plug from wire
harness.
4. Rotate blower unit so exhaust ports face the rear of
the cabinet.
©2002 Maytag Appliances Company
Blower unit
mounting screw
2. Carefully lift blower unit out of oven cabinet.
3. Rotate blower unit 90° so that exhaust ports face the
front of the cabinet.
A–7
16021668 Rev. 0
Installation Instruction
4. Place blower unit back into cabinet. Verify exhaust
ports face towards the front of the unit.
5. Attach blower plate to cabinet. Secure blower unit
with screws that were removed in step 1.
Preparing Wall and Upper Cabinet
!
2. Find and mark placement of one or two points
indicating stud location on the wall.
• Measure and mark stud location within the area
marked H on the wall template.
• If wall studs cannot be located, consult a local
building contractor.
!
CAUTION
To avoid property damage cover countertop or
cooktop by placing a piece of cardboard from the
carton or a heavy piece of material. Do not use
plastic.
• Remove shipping material and parts from inside the
microwave oven.
• Cover countertop or cooktop with a thick protective
covering, to protect it from damage and dirt.
A thick, protective
covering
WARNING
To avoid risk of property damage or personal injury,
do not attempt to install microwave oven if wall studs
cannot be located.
3. Align plumb line on wall with center line on the wall
template.
• Verify minimum width is 30" and the distance from
the top of wall template to the range or countertop
is at least 30".
4. Secure wall template to the wall.
• If cabinets are not level, adjust the wall template
to align with cabinet.
• Oven must hang level. If the front edge of the
cabinet is lower than the back edge, adjust wall
template to be level with the cabinet front.
Upper cabinet template
NOTE: For easy access to wall and upper cabinet,
remove range from wall to allow easier
measuring and drilling.
Preparing Template Placement
1. Find and mark the vertical center line on the back
wall, using a tape measure and plumb line.
16021668 Rev. 0
Wall template
5. Measure the bottom of the upper cabinet frame. Trim
the edges A, B, and C on the upper cabinet
template, so template will fit on the bottom of the
upper cabinet. If upper cabinet has a recessed
frame, trim the template to fit inside the recessed
area. Align the centerline of the upper cabinet
template with the centerline on the wall template.
Secure upper cabinet template in place.
A–8
©2002 Maytag Appliances Company
Installation Instruction
Drilling Holes in the Wall and Upper Cabinet
!
4. Cut or drill a 2" hole at the area marked M, for power
cord access into upper cabinet.
WARNING
To avoid electrical shock or personal injury, be very
careful when drilling holes into the wall. Electrical
wires may be concealed behind the wall covering.
NOTE: If upper cabinet is metal, cover the edges of the
hole to prevent damage to the power cord.
!
1. Find the points on the wall template labeled D, E, F,
and G. Drill a 3/16" diameter hole at any points
located over a wall stud. Drill 3/4" diameter hole at
any point over the wall without studding.
2. Drill holes into studded areas marked H and I on the
wall template using a 3/16" drill bit. If wall studs are
not located within these areas, drill 3/4" holes nearest
to the center of the areas as possible.
NOTE: If there are no wall studs within the areas
marked H and I, or behind points marked D, E,
F, and G, do not install microwave oven.
(Consult a building inspector.) There must be at
least one wall stud in the marked areas.
3. Drill a 3/8" hole at points J, K, and N on upper cabinet
template.
3
NOTE: If the bottom of the cabinet is recessed /4" or
more, filler block (not included) will be required
to provide additional support for the bolts.
Cabinet front Filler block
WARNING
To avoid electrical shock or personal injury, cover
edges on metal cabinet to prevent damage to power
cord.
5. Cut out the venting area required for installation.
• Roof vented: Cut out shaded area marked L on
the upper cabinet template.
• Wall vented: Cut out shaded area marked O on
the wall template.
• Room vented: Proceed to “Installing Mounting
Plate” section.
6. Use caulking compound to seal the exterior wall or
roof opening around the wall or roof cap.
Installing Mounting Plate
1. Remove templates from wall and upper cabinet.
Mounting plate
Cabinet
bottom shelf
Damper must be on top of
tab for proper venting.
• Mark the center of each filler block needed
and drill a 3/8" hole through the block.
• Align the filler blocks with openings in the top
of the microwave oven cabinet and attach to
the cabinet with tape.
NOTE: If venting through the wall, verify alignment of
damper on the rear of the mounting plate moves
freely.
2. Place toggle bolts through mounting plate holes
where 3/4" holes were drilled. Attach spring toggle
head on each toggle bolt.
Spring
toggle head
Mounting plate
Toggle bolt
Filler
block
3. Place mounting plate against the wall aligning toggle
bolts with holes.
Support tabs
©2002 Maytag Appliances Company
A–9
16021668 Rev. 0
Installation Instruction
NOTE: Leave at least the wall thickness of space to
allow spring toggle head to open once placed
into the wall.
Power cord
Spring
Toggle bolt Wall toggle head
Power cord
hole
Mounting plate
4. Locate wall stud holes and insert lag screws through
mounting plate and into 3/16" holes, do not tighten .
Mounting pate
Lag screw
5. Insert toggle bolts through wall surface and tighten.
Tighten lag screws at this point also.
6. Slide washer onto the lock pin and place inside the
upper cabinet for further use.
2. Rotate the microwave upward until oven is against
the bottom of the upper cabinet or cabinet frame.
3. Drop the lock pin and washer assembly into hole N,
and push the pin downward as far as it will go.
Washer
Lock pin
Lock pin
Washer
Attaching Oven to the Wall
!
4. Insert 3" X 1/4" bolts and washers down into holes J
and K. Tighten the bolts until the gap between the
microwave and cabinet has closed.
WARNING
This unit is an excessive weight hazard, which can
cause personal injury or property damage. Two or
more people are required to lift unit. To prevent injury
or property damage, use proper lifting and carrying
techniques when moving unit.
1. Carefully lift microwave oven and hang it on support
tabs at the bottom of the mounting plate. Reaching
through upper cabinet, thread power supply cord
through cutout in the bottom of the upper cabinet.
16021668 Rev. 0
5. Remove the lock pin and washer. If wall or roof
venting installation is used, skip to step 8.
A–10
©2002 Maytag Appliances Company
Installation Instruction
6. Roof-vented installation: Align the damper/duct
connector with the vent on top of the microwave
oven. Damper should be on top of tab. Use two
tapping screws (bright-colored) to attach damper/
duct connector to the microwave oven.
damper
NOTE: Damper/duct connector must be attached to
microwave oven after microwave oven is
installed.
9. Grasp filter screen with one hand holding the ring
and the other hand holding the opposite end. Insert
the end of the filter screen without ring into the
opening and slide towards the side of the microwave
oven. Insert ring end of filter screen into the opening
and slide entire screen towards the center of the
microwave until screen is securely in position.
Repeat for other filter screen.
10. Plug in the power supply cord.
7. Roof venting installation: Install ductwork through the
vent opening in the upper cabinet. Complete the
venting system through the roof according to the
method needed. See, Preparing Venting System
section. Use caulking to seal the exterior roof
opening around the exhaust cap.
8. Use the power supply cord clamp to bundle the
power supply cord. Install the power supply cord
clamp inside the cabinet.
duct
©2002 Maytag Appliances Company
power
supply
cord
clamp
A–11
16021668 Rev. 0
Installation Instruction
This page intentionally left blank.
16021668 Rev. 0
A–12
©2002 Maytag Appliances Company
Appendix B
©2002 Maytag Appliances Company
B–1
16021668 Rev. 0
Care and Cleaning
For best performance and safety, keep the oven clean
inside and outside. Take special care to keep the inner
door panel and the oven front frame free of food or
grease build-up.
3. To reinstall the filters, slide it into the side slot, then
push up and toward oven center to lock.
Never use abrasive cleaners or pads. Wipe the
microwave oven inside and out, including the hood
bottom cover, with a soft cloth and a warm (not hot) mild
detergent solution. Then rinse and wipe dry. Use a
chrome cleaner and polish on chrome, metal, and
aluminum surfaces. Wipe spatters immediately with a
wet paper towel, especially after cooking chicken or
bacon. Clean your oven weekly or more often, if needed.
Cleaning the Grease Filters
The grease filters should be removed and cleaned often,
at least once a month.
1. To remove grease filters, slide each filter to the side.
Pull filters downward and push to the other side. The
filter will drop out.
!
CAUTION
To avoid risk of property damage, do not operate the
hood vent system without the filters in place.
Charcoal Filter Replacement
If the oven is vented inside the room, the charcoal filter
should be replaced every 6 to 12 months, and more
often if necessary. The charcoal filter cannot be cleaned.
To order a new charcoal filter, contact the Parts Department at your nearest Authorized Service Center.
Order Charcoal Filter Kit #: MVHRK3.
1. Disconnect power to oven.
2. Remove the two vent grille mounting screws.
(2 middle screws)
2. Wash in dishwasher or soak grease filters in hot
water and a mild detergent. Rinse well and shake to
dry. Do not use ammonia. The ammonia will darken
the filter.
3. Tip the grille forward, then lift out.
16021668 Rev. 0
B–2
©2002 Maytag Appliances Company
Care and Cleaning
4. Remove old filter.
Oven Light Replacement
1. Unplug oven or turn off power at the main power
supply.
2. Remove the vent cover mounting screws. (2 middle
screws)
3. Tip the cover forward, then lift out to remove.
5. Slide new charcoal filter into place. The filter should
rest at the angle shown.
4. Remove bulb holder mounting screw.
6. Slide the bottom of the vent cover into place. Push
the top until it snaps into place. Replace the
mounting screws. Turn the power back on and set
the clock.
Cooktop/Night Light Replacement
1. Unplug the oven or turn off power at the main power
supply.
5. Lift up the bulb holder.
2.
3.
4.
5.
Remove the bulb cover mounting screws.
Replace bulb(s) with 30 or 40 watt appliance bulb(s).
Replace bulb cover.
Turn the power back on at the main power supply.
6. Replace bulb with a 30 or 40 watt appliance bulb.
7. Replace the bulb holder and mounting screw.
8. Slide the bottom of the vent cover into place. Push
the top until it snaps into place. Replace the
mounting screws. Turn the power back on at the
main power supply.
©2002 Maytag Appliances Company
B–3
16021668 Rev. 0