Kenmore 72166339800 microwave Parts

Yes; Kenmore microwaves are a solid choice when you pick the right size and features for how you cook and you follow the electrical and placement requirements. For Kenmore model 72166339800, the published specs and safety guidance in the 72166339800 owner's manual support dependable everyday countertop use.

We rate a microwave as “good” when it heats consistently, is easy to use, and holds up with normal maintenance.

• Consistent heating and defrosting performance
• Simple, responsive keypad and display
• Smooth door operation and reliable latching
• Stable turntable rotation (no skipping or stalling)
• Reasonable repairability when a common part wears out

These are the key specifications listed for this model.

Most long-term satisfaction comes from correct setup and basic care.

• Use a dedicated 20-amp circuit when possible (avoid sharing with high-draw appliances)
• Keep airflow openings clear; do not block vents
• Use microwave-safe cookware; avoid metal and foil contact
• Wipe spills promptly to prevent odors and interior damage
• If the unit goes completely dead, the microwave fuse 3B74133Q is a common protection part to check

A microwave can seem “bad” when it is underpowered for your needs or installed on a weak circuit. Matching wattage, capacity, and circuit requirements to your kitchen setup is what delivers reliable Kenmore performance.

Last updated: February 2026

The Kenmore microwave model 72166339800 measures 21 7/8 inches wide x 12 1/2 inches high x 17 1/8 inches deep (overall exterior dimensions). These are the cabinet dimensions you need for countertop fit and clearance planning; see the 72166339800 use and care guide for the full specifications section.

• Overall (exterior) dimensions (W x H x D): 21 7/8" x 12 1/2" x 17 1/8"
• Oven cavity (interior) dimensions (W x H x D): 14 1/16" x 9 5/8" x 15 5/8"
• Capacity: 1.2 cu. ft.
• Power supply: 120V AC, 60 Hz (typical household outlet)

For safe operation and airflow, we recommend:

• Leave at least 4 inches of space to the side and back walls.
• Keep vents unblocked (blocked air inlets or outlets can damage the microwave).
• Place the unit on a flat, stable countertop.
• Install the turntable correctly before use.

Using the correct exterior dimensions helps prevent tight installs that restrict ventilation. Proper clearance reduces overheating risk and helps the Kenmore 72166339800 run consistently.

Last updated: February 2026

The Kenmore 72166339800 countertop microwave has an oven cavity capacity of 1.2 cubic feet, based on the specifications listed in the 72166339800 use and care guide.

We recommend using the model-specific spec table because online listings sometimes quote a different “class” size.

• Look for “Capacity of oven cavity” in the specifications section
• Use the full model number 72166339800 when comparing specs
• Ignore “similar model” capacities; small design changes can affect cavity volume
• If you need fitment, also check the overall dimensions in the same section

Capacity affects what cookware fits and how evenly food heats. A difference of even a few tenths of a cubic foot can change whether a larger dinner plate rotates freely on the turntable.

Last updated: February 2026

For the Kenmore 72166339800 countertop microwave, we recommend leaving at least 4 inches of open space at the top, both sides, and the back so the cooling airflow is not blocked. This ventilation clearance helps prevent overheating and nuisance shutoffs.

Use these minimums when placing the microwave on a flat, stable countertop or microwave cart:

• Top: 4 in. (10 cm) minimum
• Left side: 4 in. (10 cm) minimum
• Right side: 4 in. (10 cm) minimum
• Back: 4 in. (10 cm) minimum
• Front: keep the front unobstructed (do not block the door area or vents)

For the exact placement and safety notes for your unit, follow the 72166339800 owner's manual.

Countertop microwaves pull in cooling air and exhaust warm air while running. If the air inlet or outlet is blocked, internal components can overheat, which can lead to weak heating performance, thermal cutoffs, or repeated shutdowns.

• Set the microwave on a level, rigid surface so the door aligns and latches correctly.
• Keep it away from ranges, cooktops, and other heat-producing appliances.
• Avoid enclosing it in a tight cabinet unless the cabinet provides the same open-air clearances.
• Do not drape the power cord where it can be pulled or pinched.
• If you must use an extension cord, use a properly grounded 3-wire cord with an equal or higher electrical rating.

Last updated: February 2026

Yes. For Kenmore microwave model 72166339800, the standard reset is a power reset: unplug the microwave, wait briefly, then plug it back in. This restores normal operation if the control board gets scrambled after a power interruption (it is not a menu setting).

• Press Stop/Clear to cancel any cooking cycle.
• Unplug the microwave from the wall outlet.
• Wait 60 seconds.
• Plug it back in.
• Set the clock and test with a short heat cycle.

For model-specific button names and setup steps, use the 72166339800 owner's manual.

A reset is most useful for display glitches, unresponsive keypad behavior, or odd operation right after power returns.

If the outlet is good and the breaker is not tripped, a blown internal fuse is a common cause.

• Confirm the outlet works by testing another small appliance.
• Check the home breaker or GFCI (if used on that circuit).
• If power is good, inspect and replace the internal fuse if blown.

We cover the fuse replacement process in how to replace a microwave fuse. If you need the model-matched part, use the microwave fuse 3B74133Q.

A power reset clears temporary control-board errors without replacing parts. If the microwave is still dead afterward, checking the power supply and fuse prevents unnecessary part swaps and gets you to the real failure faster.

Last updated: February 2026

For Kenmore countertop microwave model 72166339800, the model number is typically printed on a rating label you can see when you open the door. Check the door frame area first, then look around the control panel edge or the back of the cabinet. See the 72166339800 owner's manual for label location and identification details.

• Door frame (around the opening, visible with the door open)
• Along the side of the control panel trim
• Inside the cooking cavity near the opening (less common)
• Back panel of the microwave cabinet
• Bottom edge or underside of the unit (occasionally)

The rating label is a small sticker or metal tag that lists key specs and identifiers. You will typically see:

• Model number (for example, 72166339800)
• Electrical rating (often 120V AC, 60 Hz)
• Wattage and current information
• Serial number

• Write the model number exactly as shown, including all digits.
• If you see a shorter series like 721.66339, use the full model number from the label for parts lookup.
• If the label is worn, use a flashlight and take a close-up photo to zoom in.

We use the exact model number to match Kenmore microwave parts like a door interlock switch, microwave fuse, or turntable motor to the correct wiring, mounting style, and electrical rating.

Last updated: February 2026

On the Kenmore microwave model 72166339800, the main fuse is typically mounted inside the cabinet near where the power cord enters the unit, often on or near the noise filter/control area. Use the wiring and cabinet views in the 72166339800 owner's manual to confirm the exact fuse location before servicing.

Microwaves store high voltage even when unplugged, so we treat fuse access as a qualified-service task.

• Unplug the microwave and wait before doing anything else
• Verify the outlet works by testing another small appliance
• Check your home breaker (the manual notes a blown fuse or tripped breaker can cause a blank display)
• If the display is dead, suspect the line fuse first
• If the unit goes dead when you close the door or press Start, suspect door interlock parts

On countertop Kenmore units like 72166339800, the fuse is usually:

• Behind the outer cover (not behind the control panel overlay)
• Close to the cord entry point
• In a small fuse holder or clipped to a bracket
• In the same area as the line filter and wiring harness connections

If the fuse tests good, the next most common no-power or intermittent-power causes are door safety switches.

A microwave fuse usually blows because something else caused an overcurrent condition (door switch issue, shorted component, wiring problem). Replacing the fuse without fixing the root cause often leads to another blown fuse.

Last updated: February 2026

If your Kenmore microwave model 72166339800 is not spinning, the most common causes are a mis-seated glass tray/roller ring, debris under the tray, or a failed turntable drive system (often the turntable motor). Start with cleaning and correct placement, then move to electrical checks.

• Unplug the microwave, remove the glass tray and roller ring, and clean the cavity floor.
• Re-seat the roller ring so it sits flat and rolls freely.
• Reinstall the glass tray so it fully engages the center coupler/drive hub.
• Try a short cook cycle with a cup of water to confirm whether the tray should be turning.
• Confirm you are not running the oven without the tray installed (this model is designed to use the glass turntable). See the 72166339800 owner's manual.

If cleaning and re-seating do not help, the turntable motor is a common repair for this symptom.

• Microwave turntable motor 6549W1S011B: drives the turntable from beneath the oven cavity.
• Check the tray and roller ring for cracks, flat spots, or heavy wear (replace if damaged).

A non-spinning turntable can cause uneven heating and hot spots. Keeping the tray system clean and properly seated helps the microwave heat more evenly and reduces strain on the turntable motor.

Last updated: February 2026

A Kenmore microwave like model 72166339800 usually stops working because it is not getting power, the door is not fully latching, or a protective fuse has opened after a surge or component fault. Start with the basic checks in the 72166339800 owner's manual.

• Confirm the outlet works (test with a lamp) and the breaker is not tripped.
• Make sure the door closes firmly and the latch clicks.
• Verify a cook time is actually set (the oven will not start without time entered).
• Unplug the microwave for 1 minute, then plug it back in to reset the control.
• If the display is blank or the unit is dead, suspect an internal fuse.

The troubleshooting section for this model points to a few basics that stop operation:

If power to the outlet is good and the door is closing correctly, these parts are common culprits:

• Microwave fuse 3B74133Q (opens to protect the microwave during a surge or fault)
• Door interlock switches (a failed switch can prevent starting even with the door shut)
• Control board or wiring connections (less common, but possible)

A microwave can appear “dead” from a simple power issue, but it can also shut down to prevent unsafe operation. Checking the outlet, door latch, and fuse first helps you avoid replacing the wrong parts and gets you to the fastest fix.

Last updated: February 2026