Whirlpool microwave troubleshooting

The procedure for eliminating common malfunctions in microwave ovens on your own. Below in the table is a list of the most common breakdowns of microwave ovens by points and how to solve the problem.

Whirlpool GH7208XRY microwave troubleshooting

PROBLEMCHECKSOLUTION
Microwave oven will not operateHousehold fuse or circuit breakerIf a household fuse has blown or a circuit breaker has tripped, replace the fuse or reset the circuit breaker. If he problem continues, call an electrician
MagnetronTry 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
DoorFirmly close door. On some models, if a packaging spacer is attached to inside of the door, remove it, then firmly close door. If a message about the door appears in the display, the door has been closed for 5 minutes or more without the microwave oven being started. This happens to avoid unintended starting of the microwave oven. Open and close the door, then start the cycle
ControlMake sure control is set properly. Make sure Control Lock is off. Make sure Demo Mode (on some models) is off
Arcing in the microwave ovenSoil buildupSoil buildup on cavity walls, microwave inlet cover, cooking rack supports, and area where the door touches the frame can cause arcing.
Turntable alternates rotation directionsThis is normal and depends on motor rotation at the beginning of the cycle
Odor and smoke coming from microwave oven during convection cookingThis is normal for the first few convection cycles. The odor will dissipate with repeated use
Quartz bulb does not appear to be onThis is not unusual.
Is the element still working properly?Place 2 slices of bread on the tall grill rack, place the rack on the turntable and close the door. Program the microwave oven using manual grill - without microwaves - for 4 minutes. The bread should toast dark brown. If it does not toast, call for service
Radio, TV or cordless phone interferenceProximityMove the receiver away from the microwave oven, or adjust the radio or TV antenna.
SoilMake sure the microwave oven door and sealing surfaces are clean.
FrequencySome 2.4 GHz-based cordless phones and home wireless networks may experience static or noise while microwave oven is on. Use a corded phone, a different frequency cordless phone or avoid using these items during microwave oven operation.
Fan running during cooktop usageThis is normal. The microwave oven’s cooling fan (on some models), which is separate from the vent fan, automatically comes on during microwave oven operation to cool the microwave oven. It may also automatically come on and cycle on and off to cool the microwave oven’s controls while the cooktop below is being used
Fan running after cooking is finishedThis is normal for convection and grill use. The fan may run for up to 10 minutes to cool the microwave oven

Whirlpool AKM106 microwave troubleshooting

SYMPTOMCAUSECORRECTIONS
Oven is dead. Fuse is OK. No display and no operation at all.1. Open or loose lead wire harnessCheck fan motor when thermal cutout is defective. Check Ass'y PCB when LVT is defective.
2. Open thermal cutout (Magnetron)
3. Open low voltage transformer
4. Defective Ass'y PCB
No display and no operation at all. Fuse is blown.1. Shorted lead wire harnessCheck adjustment of primary, interlock monitor, door sensing switch.
2. Defective primary latch switchAll of these switches must be replaced at the same time. Check continuity of power relay contacts and if it has continuity, replace power relay also.
3. Defective monitor switch When HVTransformer is replaced, check diode and magnetron also
4. Shorted HVCapacitor
5. Shorted HVTransformer (NOTE2)
Oven does not accept key input (Program)1. Key input is not in-SequenceRefer to operation procedure. Replace PCB main.
2. Open or loose connection of membrane key pad to Ass'y PCB
3. Shorted or open membrane panel
4. Defective Ass'y PCB
Oven does not accept key input (Program)1. Key input is not in-SequenceRefer to operation procedure. Replace PCB main.
2. Open or loose connection of membrane key pad to Ass'y PCB
3. Shorted or open membrane panel
4. Defective Ass'y PCB
Timer starts countdown but no microwave oscillation. (No heat while oven lamp and fan motor turn on.)1. Off-alignment of latch switchesAdjust door and latch switches. Check high voltage component according to component test procedure and replace if it is defective. Replace PCB main.
2. Open or loose connection of high voltage circuit especially magnetron filament circuit
NOTE: Large contact resistance will bring lower magnetron filament voltage and cause magnetron to lower output and/or intermittent oscillation.
3. Defective high voltage components H.V.Transformer H.V.Capacitor
H.V.Diode
Magnetron
4. Open or loose wiring of power relay
5. Defective primary latch switch
6. Defective power relay or Ass'y PCB
Oven lamp and fan motor turn on1. Misadjustment or loose wiring of primary latch switchAdjust door and latch switches.
2. Defective primary latch switch
Oven can program but timer does not start.1. Open or loose wiring of secondary interlock switchAdjust door and interlock switches.
2. Off-alignment of primary interlock
3. Defective secondary interlock S/W
Microwave output is low. Oven takes longer time to cook food.1. Decrease in power source voltage.Consult electrician.
2. Open or loose wiring of magnetron filament circuit. (Intermittent oscillation))
3. Aging of magnetron
Fan motor turns on when plugged inLoose wiring of door sensing switchCheck wire of door sensing switch.
Oven does not operate and return to the plugged in mode.Defective Ass'y PCBReplace PCB main.
Loud buzzing noise can be heard.1. Loose fan and fan motorTighten screws of fan motor. Tighten screws of H.V.Transformer. Replace H.V.Diode.
2. Loose screws on H.V.Transformer
3. Shorted H.V.Diode
Turntable motor does not rotate.1. Open or loose wiring of turntable motor.Check the wire of turntable motor. Replace turntable motor.
2. Defective turntable motor.
Oven stops operation during cooking1. Open or loose wiring of primary interlock switchAdjust door and latch switches.
2. Operation of thermal cutout(Magnetron)
Sparks1. Metallic ware or cooking dishes touching on the oven wall.Inform the customer.
2. Ceramic ware trimmed with gold or silver powder also causes sparks.Do not use any type of cookware with metallic trimming.
Uneven cookingUneven intensity of microwave due to its characteristics.Wrap thinner parts of the food with aluminum foil.
Use plastic wrap or cover with a lid. Stir once or twice while cooking foods such as soup, cocoa, or milk.
Noise from the turntable motor when it starts to operate.Noise may result from the motor.Replace turntable motor.

Whirlpool GMC275PDB2 microwave troubleshooting

PROBLEMCAUSE
The microwave oven will not run.• The door is not firmly closed and latched.
• You did not touch START/ENTER.
• You did not follow directions exactly.
• An operation that was programmed earlier is still running.
Microwave cooking times seem too long.• The electric supply to your home or wall outlets is low or lower than normal. Your electric company can tell you if the line voltage is low. Your electrician or service technician can tell you if the outlet voltage is low.
• The cook power is not at the recommended setting.
• Larger amounts of food need longer cooking times.
The turntable will not turn.• The turntable is not correctly in place. Make sure the turntable is correct-side up and is sitting securely on center shaft.
• The support is not operating correctly. Remove turntable, check that the turntable support is properly in place, and restart oven. If turntable support does not move, call a designated service technician for repair. Cooking without the turntable can give you poor results.
The display shows a time counting down but the oven is not cooking.• The oven door is not closed completely.
You do not hear the Programming Tone.• Sound might not be turned on.

Whirlpool KM-30 8178573 microwave troubleshooting

INTERLOK SWITCH CHECKOUT PROCEDURES

SwitchCheck ByDoor OpenDoor Closed
Primary InterlockUnplug microwave oven or disconnect power.No ContinuityContinuity
Disconnect the wires at the Primary Interlock Switch.
Check from the common terminal (black/brown wires) to the normally open terminal (black/white wires).
Unplug microwave oven or disconnect power.ContinuityNo Continuity
Disconnect the wires at the Primary Interlock Switch.
Check from the common terminal (black/brown wires) to the normally closed terminal (orange wire).
Secondary InterlockUnplug microwave oven or disconnect power.No ContinuityContinuity
Disconnect the wires at the Secondary Interlock Switch.
Check from the common terminal (blue/white wires) to the normally open terminal (blue wires).
Monitor InterlockUnplug microwave oven or disconnect power.ContinuityNo Continuity
Disconnect the wires at the Monitor Interlock Switch.
Check from the common terminal (white wire) to the normally closed terminal (blue/white wires).

Whirlpool MMV1153BAB – 1.5cf microwave troubleshooting

PROBLEMSOLUTION
Neither the oven’s display nor the oven operateProperly insert the plug into a grounded outlet
If the outlet is controlled by a wall switch, make sure the wall switch is turned on
Remove the plug from the outlet, wait ten seconds, then plug it in again
Reset the circuit breaker or replace any blown fuse
Plug another appliance into the outlet; if the other appliance doesn’t work, have a qualified electrician repair the outlet
Plug the oven into a different outlet
The oven’s display works, but the power won’t come onMake sure the door is closed securely
Check to see if packing material or other material is stuck to the door seal
Check for door damage
Press STOP/CLEAR pad twice and re-enter all cooking instructions
The power goes off before the set time has elapsedIf there has not been a power outage, remove the plug from the outlet, wait ten seconds, then plug it in again. If there was a power outage, the time indicator will display
Reset the clock and any cooking instructions
Reset the circuit breaker or replace any blown fuse
The food is cooking too slowlyMake sure the oven is on its own 20 amp circuit line. Operating another appliance on the same circuit can cause a voltage drop. If necessary, move the oven to its own circuit
You see sparks or arcingRemove any metallic utensils, cookware, or metal ties. If using foil, use only narrow strips and allow at least one inch between the foil and interior oven walls
The turntable makes noises or sticksClean the turntable, roller ring and oven floor
Make sure the turntable and roller ring are positioned correctly
Using your microwave causes TV or radio interferenceThis is similar to the interference caused by other small appliances, such as hair dryers. Move your microwave further away from other appliances, like your TV or radio