Kenmore Elite 72180802400 microwave Parts

To remove the Kenmore Elite 72180802400 over-the-range microwave, we reverse the installation steps: support the unit with two people, remove the top mounting bolts from inside the upper cabinet, tilt the microwave forward, then lift it up and off the lower mounting plate tabs. Use the 72180802400 installation guide for the exact bolt locations and mounting-plate details.

• Turn off power at the breaker, then unplug the microwave (if the cord is accessible in the upper cabinet).
• Use two people to handle the microwave; it is heavy and awkward to control.
• Protect the cooktop or range with a thick, protective covering.
• Do not pull or stretch any wiring.
• If the unit is hardwired or you see damaged wiring, stop and use a qualified technician.

1. Clear the area: Remove the turntable and anything loose inside the oven.
2. Access the top bolts: Open the upper cabinet above the microwave; locate the mounting bolts that go down through the cabinet bottom into the microwave.
3. Support the microwave: One person supports the bottom front while the other removes the bolts.
4. Remove the top bolts: Back them out fully and set aside.
5. Tilt forward: Rotate the top of the microwave forward and down slightly.
6. Lift off the mounting plate: Lift the microwave up to unhook it from the support tabs on the bottom of the mounting plate, then pull it away from the wall.

Removing the top bolts before unhooking the mounting plate tabs prevents the microwave from dropping or twisting, which helps avoid cabinet damage and door alignment problems.

Last updated: February 2026

To unlock the keypad (child lock) on your Kenmore Elite microwave model 72180802400, press and hold the START pad for 3 seconds until the control lock clears. This restores normal keypad operation (cook, reheat, fan, and light controls).

• Make sure the microwave door is fully closed.
• Press and hold START for 3 seconds.
• Watch for the lock indicator to disappear (or a tone to sound).
• Try a simple command (for example, set 10 seconds and press START) to confirm it responds.
• If it relocks immediately, repeat the press-and-hold with a steady press.

On this model, child lock is set through the Options menu.

• Open the menu by selecting Options.
• Choose Child Lock.
• Select Yes to lock the controls.
• To unlock later, press and hold START for 3 seconds.

For the exact menu wording and display prompts, use the owner's manual.

If holding START for 3 seconds does not clear the lock, these are the most common causes:

• Keypad is not registering: a stuck or failed key can prevent the unlock command.
• Door not sensed as closed: the door interlock system must read “closed” for normal operation.
• Power glitch: a brief reset can restore normal control behavior.

The control lock prevents accidental starts and helps keep children from operating the microwave. Unlocking it correctly avoids unnecessary part replacement and helps confirm the control panel and door interlocks are working normally.

Last updated: February 2026

To reset your Kenmore Elite 72180802400 microwave, we recommend doing a simple power reset first: unplug the unit (or switch off the breaker) for about 1 minute, then restore power. This clears many control glitches and returns the microwave to normal operation.

• Power reset (most common): unplug for 60 seconds, then plug back in.
• Stop/Clear reset: touch STOP/CLEAR to cancel an active cooking program or incorrect entry.
• Cancel Kitchen Timer: touch KITCHEN TIMER, turn the dial to Turn off, then press the dial (the manual notes the microwave may not run if it is set as a timer).
• Confirm the door is latched: close the door firmly until it latches.
• Restore the clock (if needed): touch CLOCK and set the time using the dial.

1. Turn the microwave off.
2. Unplug the power cord (or turn off the circuit breaker).
3. Wait 1 minute.
4. Restore power.
5. Test heating with a cup of water for 1 minute on 100% power (a basic functional check described in the owner's manual).

These checks match common “won’t start” causes for this model:

• Make sure you pressed the dial to start cooking after selecting a function.
• Touch STOP/CLEAR to cancel any earlier operation that is still running.
• Check your home breaker or fuse if nothing works.
• If the vent fan turns on by itself, it can be normal; the hood fan may run automatically to cool the unit.

A reset clears temporary control-board logic issues and cancels stuck modes (like the Kitchen Timer), which are common reasons a microwave appears “dead” even though it has power.

Last updated: February 2026

If your Kenmore 72180802400 microwave runs but doesn’t heat, the most common causes are a failed high-voltage component (magnetron, diode, or capacitor) or a door interlock problem that prevents the high-voltage circuit from turning on. Use the owner's manual troubleshooting checks first.

• Confirm the door closes fully and latches; a loose latch can stop heating.
• Cancel any active cycle; press Stop/Clear, then try a simple 1-minute heat test with a cup of water.
• Verify cook power is set correctly (low power settings can look like “no heat”).
• Check for household power issues (tripped breaker or blown fuse) if performance is weak.
• Listen for normal operation: fan and turntable running with no heat often points to a high-voltage failure.

Microwave heating is created by the magnetron; the high-voltage diode and capacitor support that circuit. If any of these fail, the oven can run but not warm food.

Microwaves contain a high-voltage capacitor that can hold a dangerous charge even when unplugged. For internal electrical diagnosis or replacement of high-voltage parts, we recommend using a qualified technician.

When the door interlock switches do not prove the door is safely latched, the microwave can disable the high-voltage system. When the interlocks are fine, a failed magnetron, diode, or capacitor is the most direct reason the unit “sounds normal” but does not heat.

For more step-by-step symptom guidance, use why is my microwave not heating.

Last updated: February 2026