Whirlpool WML55011HW User manual
SERVICE MANUAL
W11387992B
Multimedia
Enhanced
ii n
Low Prole Microwave Hood Combination
FOREWORD
This Whirlpool Service Manual (Part No. W11387992B), provides the In-Home Service Professional with service
informaon for the “Low Prole Microwave Hood Combinaon.”
The Wiring Diagram used in this Service Manual is typical and should be used for training purposes only. Always
use the Wiring Diagram supplied with the product tech sheet when servicing the oven.
For specic operang and installaon informaon on the model being serviced, refer to the “Use and Care
Guide” or “Installaon Instrucons” provided with the oven.
GOALS AND OBJECTIVES
The goal of this Service Manual is to provide informaon that will enable the In-Home Service Professional to
properly diagnose malfuncons and repair the “Low Prole Microwave Hood Combinaon.”
The objecves of this Service Manual are to:
• Understand and follow proper safety precauons.
• Successfully troubleshoot and diagnose malfuncons.
• Successfully perform necessary repairs.
WHIRLPOOL CORPORATION assumes no responsibility for any repairs made on our
products by anyone other than authorized In-Home Service Professionals.
©2020 Whirlpool Corporaon. Benton Harbor, MI 49022
Low Prole Microwave Hood Combination n
iii
TABLE OF CONTENTS
SECTION 1: GENERAL INFORMATION........................................................................
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COMPONENT TESTING .....................................................................................................................
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OUTER WRAPPER REMOVAL ............................................................................................................
COMPONENT LOCATIONS.................................................................................................................
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iv n
Low Prole Microwave Hood Combination
NOTES
GENERAL INFORMATION
Low Prole Microwave Hood Combination n
1-1
Section 1:
General Information
This secon provides general safety, parts, and informaon for
the “Low Prole Microwave Hood Combinaon.”
■Microwave Hood Combinaon Safety
■Product Specicaons
■Model and Serial Label
• Locaon
• Model Nomenclature
■Tech Sheet Locaon
GENERAL INFORMATION (Cont.)
1-2 n
Low Prole Microwave Hood Combination
Microwave Hood Combination Safety
You can be killed or seriously injured if you don't immediately
You can be killed or seriously injured if you don't follow
All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what can
happen if the instructions are not followed.
Your safety and the safety of others are very important.
We have provided many important safety messages in this manual and on your appliance. Always read and obey all safety
messages.
This is the safety alert symbol.
This symbol alerts you to potential hazards that can kill or hurt you and others.
All safety messages will follow the safety alert symbol and either the word “DANGER” or “WARNING.”
These words mean:
follow instructions.
instructions.
DANGER
WARNING
PRECAUTIONS TO AVOID POSSIBLE EXPOSURE TO
EXCESSIVE MICROWAVE ENERGY
(a) Do not attempt to operate this oven with the door open
since open-door operation can result in harmful exposure
to microwave energy. It is important not to defeat or
tamper with the safety interlocks.
(b) Do not place any object between the oven front face and
the door or allow soil or cleaner residue to accumulate on
sealing surfaces.
(c) Do not operate the oven if it is damaged. It is particularly
important that the oven door close properly and that there
is no damage to the:
(1) Door (bent),
(2) Hinges and latches (broken or loosened),
(3) Door seals and sealing surfaces.
(d) The oven should not be adjusted or repaired by anyone
except properly qualified service personnel.
GENERAL INFORMATION (Cont.)
Low Prole Microwave Hood Combination n
1-3
Product Specifications
Capacity (Cu. Ft.) 1.1
Depth With Door Open 90 Degree (IN, inches) 421/8
Depth (IN, inches) 18
Height (IN, inches) 105/16
Width (IN, inches) 297/8
Interior Depth 15
Interior Height 7
Interior Width 19
Door Release Touch to open
Cavity Finish Powder Coat/Non-Sck
Cooking Power (Was) 900/1000
Interior Light Halogen/LED
Number of Racks 0
Work Surface Light Halogen/LED
Turntable Stoppable Recessed
Turntable Diameter Size (IN, inches) 12
Microwave Type Over-the-range
Size (IN, inches) 30
Cabinet Color Black/White/Stainless Steel/Black Stainless Steel
Door Swing Le
Control Locaon Right Front
Control Type Electronic Touch
Display Color White
Electronic Display Type LED/LCD
Number of Keypads 24
Scrolling Electronic Display Yes
Number of Power Levels 10
Sensor Cooking Yes
Number of Sensor Control Keypads 4
Clock Yes
Timer Yes
Fan Speed Indicator Yes
Convenience Cooking Controls Yes
Number of Convenience Control Pads 6
One Touch Cooking Yes
Night Light Yes
GENERAL INFORMATION (Cont.)
1-4 n
Low Prole Microwave Hood Combination
Microwave Selecons Add 30 Seconds, Auto Cook, Beverage, Control Lock, Cook/ Start,
Cook Power, Cook Time, Defrost, Dinner Plate, End of Cycle
Signal, Fresh Vegetable, Frozen Entree, Frozen Vegetable,
Languages - English/French, O/Cancel, Pause, Pizza, Popcorn,
Reheat, Sound On/O, Soup, Steam, Timer
Blower Type Centrifugal
Filters Charcoal Odor Removing Filter
Duct Direcon Vercal or Horizontal
Duct Type Rectangular
CFM Motor Class 400
Duct Outlet Size (IN, inches) 31/4x 10
Number of Speeds 3 or 4
Vent Fan Locaon Side
Venlaon Type Updra
Venng Exterior or Recirculang
Amps 15
Hz 60
Volts 120
Connecvity No
Works With No
GENERAL INFORMATION (Cont.)
Low Prole Microwave Hood Combination n
1-5
Product Specifications (Cont.)
Capacity (Cu. Ft.) 1.1
Depth With Door Open 90 Degree (IN, inches) 421/8
Depth (IN, inches) 18
Height (IN, inches) 101/4
Width (IN, inches) 30
Interior Depth 15
Interior Height 7
Interior Width 19
Door Release Touch to Open
Cavity Finish Non-Sck
Cooking Power (Was) 900/950/1000
Interior Light LED
Number of Racks 0
Work Surface Light LED
Turntable Stoppable Recessed
Turntable Diameter Size (IN, inches) 12
Microwave Type Over-the-Range
Size (IN, inches) 30
Cabinet Color Black/White/Stainless Steel/Black Stainless
Door Swing Le
Control Locaon Right Front
Control Type Electronic Touch
Display Color White
Electronic Display Type LCD
Number of Keypads 24
Scrolling Electronic Display Yes
Number of Power Levels 10
Sensor Cooking Yes
Number of Sensor Control Keypads 4
Clock Yes
Timer Yes
Fan Speed Indicator Yes
Convenience Cooking Controls Yes
Number of Convenience Control Pads 6
Night Light Yes
GENERAL INFORMATION (Cont.)
1-6 n
Low Prole Microwave Hood Combination
Microwave Selecons Add 30 Seconds, Auto Cook, Beverage, Control Lock, Cook/Start,
Cook Power, Cook Time, Defrost, Dinner Plate, End of Cycle Signal,
Fresh Vegetable, Frozen Entree, Frozen Vegetable, Languages
- English/French, O/Cancel, Pause, Pizza, Popcorn, Reheat,
Soen/ Melt, Sound On/O, Soup, Timer
Blower Type Centrifugal
Filters Charcoal Odor Removing Filter
Duct Direcon Vercal or Horizontal
Duct Type Rectangular
CFM Motor Class 500
Duct Outlet Size (IN, inches) 31/4x 10
Number of Speeds 4
Vent Fan Locaon Side
Venlaon Type Updra
Venng Exterior or Recirculang
Amps 15
Hz 60
Volts 120
Was 1650/1800
Connecvity No
Works With No
GENERAL INFORMATION (Cont.)
Low Prole Microwave Hood Combination n
1-7
Model and Serial Number Location
Model & Serial Number
Label Locaon (behind door)
GENERAL INFORMATION (Cont.)
1-8 n
Low Prole Microwave Hood Combination
Model Nomenclature
W M L 511
1 = OPP
11 =
=
=
19 =
E=
F=
G=
J=
GENERAL INFORMATION (Cont.)
Low Prole Microwave Hood Combination n
1-9
K M L S 5 11
11 =
=
=
19 =
E=
F=
G=
J=
GENERAL INFORMATION
1-10 n
Low Prole Microwave Hood Combination
Tech Sheet Location
Tech Sheet Location (on some models)
On the back of panel
DIAGNOSTICS
Low Prole Microwave Hood Combination n
2-1
Section 2:
Diagnostics
This secon provides diagnosc and fault codes informaon for
the “Low Prole Microwave Hood Combinaon.”
■Safety
■Diagnoscs
■Error Codes
For Service Technician Use Only
DIAGNOSTICS (Cont.)
2-2 n
Low Prole Microwave Hood Combination
Safety
DANGER
Electrical Shock Hazard
Only authorized technicians should perform
diagnostic voltage measurements.
After performing voltage measurements,
disconnect power before servicing.
Failure to follow these instructions can result in
death or electrical shock.
WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Failure to do so can result in death or
electrical shock.
Replace all parts and panels before operating.
Voltage Measurement Safety Information
When performing live voltage measurements, you must do the following:
■ Verify the controls are in the off position so that the appliance does not start when energized.
■ Allow enough space to perform the voltage measurements without obstructions.
■ Keep other people a safe distance away from the appliance to prevent potential injury.
■ Always use the proper testing equipment.
■ After voltage measurements, always disconnect power before servicing.
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 finished, but failure may occur at a later date due to ESD stress.
■ Use an antistatic wrist strap. Connect wrist strap to green ground connection point or unpainted metal in the
appliance
-OR-
Touch your finger repeatedly to a green ground connection point or unpainted metal in the appliance.
■ Before removing the part from its package, touch the antistatic 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 antistatic bag, observe above instructions.
For Service Technician Use Only
DIAGNOSTICS (Cont.)
Low Prole Microwave Hood Combination n
2-3
Diagnostics - Touch Panel
The microwave hood combinaon is provided with a self-diagnosc roune that can be accessed through the touch keypad.
1. Plug in microwave oven or reconnect power, in idle mode,
close the door, turn o hood light and hood fan.
2. Open and close door, then press CANCEL - CANCEL - START
within 3 seconds.
All LED/LCD segments will be lit to indicate the Test mode has
been entered.
3. Open door. The model number will be displayed.
4. Close door. All display segments will be lit.
5. Press indicated keypad for correct display readout and beep.
NOTE: If the Cancel buon is pressed during this diagnosc
roune, you will exit the Test mode.
Clock value such as 0-200 NTC sensor check 1 beep
Start ACU xx.xx.xx ACU SW version check 1 beep
Start UI:xx.xx.xx UI SW version check 1 beep
Start LT:xx Le touch SW version check 1 beep
Start RT:xx Right touch SW version check 1 beep
Start GEE:xx.xx.xx GEE SW version check 1 beep
Hood Light key 03 or 0009 -1 beep
Hood Fan key 04 or 0011 -1 beep
Timer key 05 or 0010 -1 beep
Turntable On/O key 09 -1 beep
Cook value between 2000 and 9000 Humidity sensor check 1 beep
Power - - 1 beep
Reheat key 24 or 0003 -1 beep
Defrost key 29 or 0005 -1 beep
AccuPop key 25 -1 beep
Steam/Simmer key 31 -1 beep
Popcorn 0001 - 1 beep
Soen/Melt 0004 -1 beep
Power/Time 0006 - 1 beep
0key 10 or XXXX GESE Version check 1 beep
1 P100 MW+Cavity light+Cooling Fan+Turntable On 1 beep
211 or CL or F9E3 Cavity Lamp+Cooling Fan ON 1 beep
3HF_Mid LOW or FDE2 Turntable on 1 beep
4HF_Mid HIGH Hood Fan turn on (Mid High Speed) 1 beep
5LCD o Standby power check 1 beep
6HL_HIGH Hood Light turn on (high level) 1 beep
7HL_LOW Hood Light turn on (low level) 1 beep
8 HF_HIGH Hood Fan turn on (High Speed) 1 beep
9HF_LOW Hood Fan turn on (LOW Speed) 1 beep
Cancel : or xx:xx or Clock Exit test mode to idle mode 1 beep
For Service Technician Use Only
DIAGNOSTICS (Cont.)
2-4 n
Low Prole Microwave Hood Combination
Error/Failure Codes Indications
NOTE: Many of the problems listed in the chart below may be solved by power cycling. Unplug microwave oven or disconnect power.
Aer 1 minute, plug in microwave oven or reconnect power.
“Enter clock”
or
Flashing colon “:”
Power failure Aer a power failure, “Enter clock”/Colon “:” will be ashing. Press any key/CANCEL to end this
indicaon. The colon (:) will appear when in Standby mode.
Flashing me
value + steady
clock icon
or
Steady colon“:” +
steady clock icon
Power failure Aer a power failure, display shows ashing me value + steady clock icon or steady colon“:” +
steady clock icon. Press any key to end this indicaon.
The clock icon will disappear, to show steady clock and “:”
F2E1 Touch panel
failure
1. Unplug microwave oven or disconnect power.
2. Replace touch panel.
3. Replace all parts and panels before operang.
4. Plug in microwave oven or reconnect power.
5. If problem persists, refer to “ACU Pin Voltage Matrix.”
F1E4 MW Relay 1. Unplug microwave oven or disconnect power.
2. Check wiring to Relay 4903 or K8.
3. Check to see if relay (4903 or K8 on ACU) contact has welded closed.
4. Replace all parts and panels before operang.
5. Plug in microwave oven or reconnect power.
6. If problem persists, refer to “ACU Pin Volatage Matrix” to check P2-2 (Door), P1-3 (N), and
P1-1(L) or J21-1 (N) and J21-4 (L).
F4E4 Humidity
sensor error
1. Enter the Diagnoscs mode (press CANCEL - CANCEL - START), and then press COOK to
display the humidity sensor reading. If display does not show the value between “2000 and
9000” connue to Step 2.
2. Unplug microwave oven or disconnect power.
3. Connect a new humidity sensor ACU to cable.
4. Replace all parts and panels before operang.
5. Plug in microwave oven or reconnect power.
6. Enter the Diagnoscs mode (press CANCEL - CANCEL - START), then press COOK to see if
failure code reappears.
NOTE: There may be a delay (approximately 1 minute, 20 seconds) before the F4E4 failure
code is displayed.
7. If the F4E4 failure code reappears, unplug microwave oven or disconnect power.
8. Replace ACU.
9. Replace all parts and panels before operang.
10. Plug in microwave oven or reconnect power.
F8E5
or
F4E3
Exhaust air
temperature
detecon
failure
1. Enter the Diagnoscs mode (press CANCEL - CANCEL - START), and then press SETUP
or CLOCK or open and close door once, and then press “8” to display the exhaust air
temperature sensor reading. Verify the sensor temperature reading is at room temperature
(typically 50°F to 90°F [10°C to 32°C]) and verify failure code. If failure code matches
complaint, connue to Step 2.
2. Unplug microwave oven or disconnect power.
3. Disconnect sensor from ACU.
4. Measure sensor resistance between connector pins and conrm reading is between 9.5 kΩ
and 10.5 kΩ at room temperature. If measurement is not correct or if a short or open circuit
is found, replace sensor.
5. Replace all parts and panels before operang.
6. Plug in microwave oven or reconnect power.
7. Enter the diagnoscs mode (press CANCEL - CANCEL - START), and then press SETUP or
CLOCK or open and close door once, and then press “8” to display the cavity temperature
sensor reading. Verify the sensor temperature reading. If it is sll not correct, replace ACU.
8. If failure does not reappear, stop.
For Service Technician Use Only
DIAGNOSTICS (Cont.)
Low Prole Microwave Hood Combination n
2-5
F9E3 (only occurs
in Diagnoscs)
Cavity light /
Cooling fan
relay failure
1. Enter the Diagnoscs mode (press CANCEL - CANCEL - START), and open and close door
once, and then press “2” to display the relay status of cavity light or cooling fan. If relay K4
contact normally display show CL; If relay K4 does not contact, display show F9E3. Need to
replace Phoebe ACU.
FDE3 (only occurs
in Diagnoscs)
Exhaust fan
relay failure
1. Enter the Diagnoscs mode (press CANCEL - CANCEL - START), and open and close door
once, and then press “4” to display the relay status of Exhaust fan - high. If relay K4 contact
normally display show HF H; if relay K4 does not contact, display show FDE3. Need to
replace Phoebe ACU.
2. Enter the Diagnoscs mode (press CANCEL - CANCEL - START), and open and close door
once, and then press “5” to display the relay status of Exhaust fan - low. If relay K5 contact
normally display show HF L; If relay K5 does not contact, display show FDE3. Need to
replace Phoebe ACU.
FDE2 (only occurs
in Diagnoscs)
Turn table
relay failure
1. Enter the Diagnoscs mode (press CANCEL - CANCEL - START), and open and close door
once, and then press “3” to display the relay status of turn table. If relay K6 contact
normally display show ; If relay K5 does not contact, display show FDE2. Need to replace
Phoebe ACU.
IMPORTANT: Before checking the interlock switches, unplug microwave oven or disconnect power. Be sure to disconnect all of the
wires at the switch being tested before making any connuity readings.
NOTE: The Secondary Interlock Switch, Monitor Interlock Switch, Primary Interlock Switch and Door Interlock Switch are mounted in
the door lock switch cradle. All the Interlock Switches can be idened by the wire colors that are connected to the terminals of the
switches. See the chart below for wire color designaon.
Primary Interlock 1. Unplug microwave oven or disconnect power.
2. Disconnect the wires at the Primary Interlock Switch.
3. Check from the common terminal (black/black wires) to the normally open
terminal (black/white wires).
4. Reconnect wires to switch.
- +
Monitor Interlock 1. Unplug microwave oven or disconnect power.
2. Disconnect the wires at the Monitor Interlock Switch.
3. Check from the common terminal (white wire) to the normally closed terminal
(blue/blue wires).
4. Reconnect wires to switch.
+ -
Secondary Interlock 1. Unplug microwave oven or disconnect power.
2. Disconnect the wires at the Secondary Interlock Switch.
3. Check from the common terminal (white/white wires) to the normally open
terminal (blue/black wires).
4. Reconnect wires to switch.
- +
Door Interlock 1. Unplug microwave oven or disconnect power.
2. Disconnect the wires at the Door Interlock Switch.
3. Check from the common terminal (blue wire) to the normally closed terminal
(orange wire).
4. Reconnect wires to switch.
+ -
(+) Connuity (-) No Connuity
For Service Technician Use Only
DIAGNOSTICS (Cont.)
2-6 n
Low Prole Microwave Hood Combination
NOTES:
nBelow diagrams are not intended to show a complete circuit;
they represent the posion of switches during “DOOR OPEN”
or “DOOR CLOSED”(connuity checks only).
nInterlock and Monitor switches cannot be adjusted and all
these switches should be replaced if any one of them is found
to be defecve. Aer replacing interlock/monitor switches,
reconnect wires to switch and check for connuity.
IMPORTANT: High-voltage is present at the magnetron and high-
voltage capacitor terminals. Avoid direct contact when power
is connected to these components to avoid serious injury or
possible death. Always be sure that the high-voltage capacitor is
discharged before accessing any of these components.
For a no-heat condion, refer to the following step-by-step
instrucons:
1. Unplug microwave oven or disconnect power.
2. Discharge the high-voltage capacitor.
3. Disconnect the high-voltage transformer primary windings.
4. Aach the voltmeter leads to the high-voltage transformer
primary input wires.
5. Plug in microwave oven or reconnect power.
6. Close door and program the microwave oven to operate for
30 seconds.
7. Press START.
8. Check the input voltage at the high-voltage transformer
primary input wires. If the voltage is not close to the rang
voltage 120 ± 15 VAC, unplug microwave oven or disconnect
power. Check the circuitry as follows:
nMeasure resistance of the fuse, micro-switches, and
thermostats. Replace any failed components. (Refer to
the wiring diagram.)
nCheck for loose terminals. (Refer to the wiring diagram.)
Check all of the terminals on the main route from the
power supply to the high-voltage transformer.
nCheck for loose or failed connectors on the PCBA
(P1, P2). If these check out OK, plug in microwave oven or
reconnect power.
nCheck for ACU failure. Refer to “ACU Pin Voltage Matrix.”
9. If the input voltage at the high-voltage transformer primary
input wires is close to the rang voltage 120 ± 15 VAC, unplug
microwave oven or disconnect power.
10. Check the power supply components. Refer to “Component
Tests.”
nHigh-voltage transformer
nHigh-voltage capacitor
nHigh-voltage diode
11. If the power supply components check out OK, check the
connecon between the magnetron and the high-voltage
transformer.
12. If all of the components check out OK, replace the
magnetron.
13. Reconnect the high-voltage transformer primary windings.
N
(NO)
(NC)
Monitor
Interlock
Switch
Primary
Interlock
Switch
(NC)
(NO)
Secondary
Interlock
(NC)
Switch
P5-4 (NO) P5-2
L
(NO) (NC) P2-2
Door
Interlock
Switch
N
(NO)
(NC)
Monitor
Interlock
Switch
Primary
Interlock
(NC)
Switch
(NO)
Secondary
Interlock
Switch
(NC)
P5-4 (NO) P5-2
L
(NC)
(NO)
P2-2
Door
Interlock
Switch
Door Closed Door Open
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