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14

TROUBLESHOOTING

Try the solutions suggested here first in order to avoid the cost of an unnecessary service call.

Nothing will operate

Has a household fuse blown, or has a circuit breaker 
tripped?

Replace the fuse or reset the circuit breaker. If the problem 
continues, call an electrician.

Microwave oven will not operate

Is the magnetron working properly?

Try to heat 1 cup (250 mL) of cold water for 2 minutes at 
100% cooking power. If water does not heat, try the steps 
below. If microwave oven still does not operate, call for 
service. See “Assistance or Service” section.

Is the door completely closed?

Firmly close door.

Is a packaging spacer (on some models) attached to the 
inside of the door?

Remove packaging spacer, then firmly close door.

Is the electronic microwave oven control set correctly?

See “Microwave Oven Control” section.

On some models, is the Control Lock set?

See “Control Lock” section.

On some models, is the Demo Mode in use?

See “Demo Mode” section.

Microwave oven makes humming noise

This is normal and occurs when the power supply switches 
the magnetron on and off.

Microwave oven door looks wavy

This is normal and will not affect performance.

Turntable will not operate

Is the turntable properly in place?

Make sure turntable is correct side up and is sitting securely 
on the turntable support. See “Turntable” section.

Is the turntable support operating properly?

Remove turntable. Remove and clean turntable hub, support 
and rollers. Replace hub, support and turntable. Place 1 cup 
(250 mL) of water on the turntable, then restart microwave 
oven. If it still is not working, call for service. See “Assistance 
or Service” section. Do not operate the microwave oven 
without turntable and turntable support working properly.

Turntable alternates rotation directions

This is normal and depends on motor rotation at beginning of 
cycle.

Display shows messages

Is the display showing “:”? 

There has been a power failure or the Clock time has been 
turned off. See “Display” section to clear display. See “Clock” 
section to reset or turn on Clock.

Display shows time countdown, but the microwave oven 
is not operating

Is the Timer in use?

See “Timer” section.

On some models, is the Demo Mode in use?

See “Demo Mode” section.

Tones are not sounding

Are tones turned off?

See “Tones” section.

Cooking times seem too long

Is the cooking power set properly?

See “Microwave Cooking Power” section.

Are large amounts of food being heated?

Larger amounts of food need longer cooking times.

Is the incoming voltage less than that specified in 
“Microwave Oven Safety?”

Have a qualified electrician check the electrical system in the 
home.

Interference with radio, TV, cordless phone, etc.

Is the microwave oven plugged into the same outlet?

Try a different outlet for the electronic device.

Is the radio or TV receiver near the microwave oven?

Move the receiver away from the microwave oven, or adjust 
the radio or TV antenna.

Are the microwave oven door and sealing surfaces clean?

Make sure these areas are clean.

Is the cordless phone frequency 2.4 GHz?

Some 2.4 GHz-based cordless phones and home wireless 
networks may experience static or noise while the microwave 
oven is on. Use a corded phone or a different frequency 
cordless phone, or avoid using these items during microwave 
oven operation.

Summary of Contents for MT4155

Page 1: ...AVE OVEN Use CareGuide For questions about features operation performance parts accessories or service call 1 800 253 1301 or visit our website at www whirlpool com Table of Contents 2 W10158719A Model MT4155 ...

Page 2: ... Timer 7 Control Lock 7 Demo Mode 7 Options 7 MICROWAVE OVEN USE 8 Food Characteristics 8 Cooking Guidelines 8 Cookware and Dinnerware 9 Aluminum Foil and Metal 9 Microwave Cooking Power 9 Manual Cooking 10 Cooking in Stages 10 Sensor Cooking 10 Sensor Popcorn 10 Sensor Cook 11 Sensor Reheat 11 Defrosting 12 Warm Hold 12 MICROWAVE OVEN CARE 13 General Cleaning 13 TROUBLESHOOTING 14 ASSISTANCE OR S...

Page 3: ...y food It is not designed for industrial or laboratory use As with any appliance close supervision is necessary when used by children Do not operate the microwave oven if it has a damaged cord or plug if it is not working properly or if it has been damaged or dropped The microwave oven should be serviced only by qualified service personnel Call an authorized service company for examination repair ...

Page 4: ...locations Do not immerse cord or plug in water Keep cord away from heated surfaces Do not let cord hang over edge of table or counter Do not mount over a sink Do not cover racks or any other part of the microwave oven with metal foil This will cause overheating of the microwave oven PRECAUTIONS TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY a Do not attempt to operate this oven with the ...

Page 5: ...Requirements Observe all governing codes and ordinances Required A 120 Volt 60 Hz AC only 15 or 20 amp electrical supply with a fuse or circuit breaker Recommended A time delay fuse or time delay circuit breaker A separate circuit serving only this microwave oven WARNING Fire Hazard Do not install oven next to or over a heat source without a UL listed CSA approved in Canada trim kit Doing so can r...

Page 6: ...support should fit inside the turntable bottom ridge MICROWAVE OVEN CONTROL Display When power is first supplied to the microwave oven will appear in the display If the appears in the display at any other time a power failure has occurred Reset the clock if needed When the microwave oven is in use the display shows cook time remaining When the microwave oven is not in use the display shows the tim...

Page 7: ... seconds and counts down the set time NOTE The Timer does not start or stop the microwave oven Cook functions may be used while the Timer is counting down When the cook function is active in the display touch TIMER SET OFF to see the Timer count down for 5 seconds To Set 1 Touch TIMER SET OFF 2 Touch number pads to enter desired time 3 Touch TIMER SET OFF or START or allow the Timer to start autom...

Page 8: ...nly than irregularly shaped food Starting Temperature Room temperature foods will heat faster than refrigerated foods and refrigerated foods will heat faster than frozen foods Composition and Density Foods high in fat and sugar will reach a higher temperature and will heat faster than other foods Heavy dense foods such as meat and potatoes require a longer cook time than the same size of a light p...

Page 9: ... specify which cooking power to use by percent or name For example 70 Medium High Use the following chart as a general guide for the suggested cooking power of specific foods MATERIAL RECOMMENDATIONS Aluminum Foil Metal See Aluminum Foil and Metal section Browning Dish Bottom must be at least 3 16 5 mm above the turntable Follow manufacturer s recommendations Ceramic Glass Glass Acceptable for use...

Page 10: ... fitting lid allows enough steam to escape to be detected by the sensor When covering foods with plastic wrap be sure to leave a large enough vent opening to allow the steam to escape NOTES The microwave oven should be plugged in for at least 3 minutes The microwave oven cavity and the exterior of the cooking container should be dry The room temperature should not exceed 95 F 35 C If the door is o...

Page 11: ...Baked Potatoes 1 4 medium 10 13 oz 283 369 g each Pierce each one several times with a fork Place on turntable around edges at least 1 2 5 cm apart At the end of cooking let stand 5 minutes after cooking Frozen Vegetables 1 4 cups 250 mL 1 L Remove from package Place in microwave safe container Cover with plastic wrap and vent Stir and let stand 2 3 minutes after cooking Fresh Vegetables 1 4 cups ...

Page 12: ... the display and or stop reminder tones To Defrost Manually Follow direction in Manual Cooking section and use 30 cooking power See Microwave Cooking Power chart WarmHold Hot cooked food can be kept warm in the microwave oven The Warm Hold function uses 10 cook power Warm Hold can be used by itself or can be programmed to follow a cooking cycle Opening the door during Warm Hold will cancel the fun...

Page 13: ...t Cover To avoid arcing and microwave oven damage the microwave inlet cover see Parts and Features should be kept clean Wipe with wet cloth MICROWAVE OVEN DOOR AND EXTERIOR The area where the microwave oven door and frame touch when closed should be kept clean Mild nonabrasive soaps and detergents Rinse with clean water and dry with soft lint free cloth Glass cleaner and paper towels or nonabrasiv...

Page 14: ...hen restart microwave oven If it still is not working call for service See Assistance or Service section Do not operate the microwave oven without turntable and turntable support working properly Turntable alternates rotation directions This is normal and depends on motor rotation at beginning of cycle Display shows messages Is the display showing There has been a power failure or the Clock time h...

Page 15: ...ined to fulfill the product warranty and provide after warranty service anywhere in the United States To locate the Whirlpool designated service company in your area you can also look in your telephone directory Yellow Pages For further assistance If you need further assistance you can write to Whirlpool Corporation with any questions or concerns at Whirlpool Brand Home Appliances Customer eXperie...

Page 16: ...chased DISCLAIMER OF IMPLIED WARRANTIES LIMITATION OF REMEDIES CUSTOMER S SOLE AND EXCLUSIVE REMEDY UNDER THIS LIMITED WARRANTY SHALL BE PRODUCT REPAIR AS PROVIDED HEREIN IMPLIED WARRANTIES INCLUDING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED TO ONE YEAR OR THE SHORTEST PERIOD ALLOWED BY LAW WHIRLPOOL SHALL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES SO...

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