How to Keep Your John Lewis Microwave Running Well

What John Lewis microwaves are and how to care for them

John Lewis microwaves are sold through the John Lewis department store and come with their own care requirements depending on the model. Most are standard countertop or built-in units that heat food using microwave radiation, and they need regular cleaning and maintenance to work safely and last longer. The specific steps you take depend on whether you have a solo microwave (heating only), a combination model (heating plus convection or grill), or a built-in unit integrated into your kitchen cabinetry.

Your microwave manual is the most reliable source for your exact model's needs. John Lewis includes a printed manual with new purchases, and you can also find digital versions on the John Lewis website by searching your model number. The manual tells you which parts are removable, what surfaces are safe to clean with water, and whether your model has a charcoal filter that needs replacing.

Key Takeaways

• Clean the interior after every few uses by wiping the walls and floor with a damp cloth, and remove the turntable to wash it separately in warm soapy water.
• Wipe the exterior control panel and door with a soft, slightly damp cloth—never spray cleaner directly onto the panel or let water drip into the vents.
• Check your model's manual to see if it has a charcoal filter that needs replacing every 6 to 12 months, as a clogged filter reduces performance.
• Keep the door seal clean and dry, because food debris or moisture in the seal can prevent the door from closing properly and cause the microwave to stop working.
• Never run the microwave empty, as this can damage the magnetron (the part that generates heat), so always have food or a cup of water inside when you turn it on.

Cleaning the interior after each use

The inside of your microwave collects steam, splatters, and food particles every time you heat something. Dried-on food can trap moisture, cause odors, and eventually become hard to remove. The easiest approach is to wipe the interior while it is still slightly warm (but cool enough to touch safely) and the moisture is still soft.

Fill a microwave-safe bowl with water and add a slice of lemon or a tablespoon of white vinegar. Microwave on high for 3 to 5 minutes until the water boils and creates steam inside the microwave. Turn off the microwave, leave the door closed for 2 minutes to let the steam soften the debris, then open the door and wipe the walls, ceiling, and floor with a damp cloth or sponge. The steam loosens stuck-on food so you do not have to scrub hard.

Remove the turntable (the glass or ceramic plate that spins) and wash it separately in warm soapy water in your sink. Dry it completely before putting it back. If your model has a removable waveguide cover (a plastic or mica sheet on the ceiling), check your manual to see if it can be removed and washed—some models have this, others do not. Never force any part that does not come out easily.

Cleaning the exterior and control panel

The outside of your microwave and the control panel collect dust, fingerprints, and kitchen grease. A clean exterior also helps you spot any damage to the door seal or vents early. Use a soft, slightly damp cloth—not a soaking wet one—and wipe the outside surfaces gently.

For the control panel, dampen the cloth minimally so water does not drip into the buttons or vents. Wipe the buttons and display gently, then dry the area with a separate dry cloth. Never spray cleaner directly onto the panel, as liquid can seep into the electronics and cause a fault. If your microwave has a stainless steel exterior, you can use a microfiber cloth designed for stainless steel to avoid streaks, but plain water works just as well.

Check the door seal (the rubber or silicone strip around the edge of the door) for food debris or moisture. Wipe it with a damp cloth and dry it thoroughly. A dirty or damp seal can prevent the door from closing fully, which causes the microwave to stop heating as a safety feature.

Checking and replacing filters

Some John Lewis microwave models, particularly over-the-range or built-in units, have a charcoal filter that traps cooking odors and grease. This filter does not clean the air—it simply absorbs odors—and it becomes saturated over time. Once saturated, it stops working and can even trap moisture, which leads to odors and mold.

Check your manual to see if your model has a charcoal filter and where it is located. If it does, the manual will also tell you how often to replace it—typically every 6 to 12 months depending on how often you cook. Replacement filters are sold through John Lewis and other retailers, and they are inexpensive. To replace it, turn off the microwave, locate the filter (usually behind a removable panel or grille), slide out the old filter, and slide in the new one. Some models require you to press a reset button after installing a new filter.

If your microwave has a metal grease filter (a mesh screen that catches cooking splatters), this one is washable and reusable. Remove it according to your manual, wash it in warm soapy water, rinse thoroughly, dry completely, and reinstall it. A clogged grease filter reduces airflow and makes the microwave work harder.

Preventing common problems

Never run your microwave empty or with only a cup of water inside for more than a minute or two. The magnetron—the component that generates microwave radiation—needs something to absorb that energy. If there is nothing to absorb it, the magnetron can overheat and fail. Always place food or a full cup of water inside before you turn on the microwave.

Do not use metal utensils, aluminum foil, or metal-trimmed dishes inside the microwave, as these reflect microwaves and can cause arcing (visible sparks). Stick to microwave-safe glass, ceramic, or microwave-labeled plastic containers. Check your manual for a list of approved materials if you are unsure.

Keep the vents on the sides and back of your microwave clear of dust and obstructions. These vents allow heat to escape so the microwave does not overheat. Wipe them gently with a dry cloth or soft brush every few months. If your microwave is built into cabinetry, make sure there is at least 3 inches of clearance around the vents, as stated in most installation guides.

When to contact John Lewis for repairs

If your microwave stops heating, makes unusual noises, has a damaged door seal, or shows visible cracks in the interior, contact John Lewis customer service. Most John Lewis microwaves come with a warranty that covers manufacturing faults for a set period (usually 1 to 3 years depending on the model). Your receipt or order confirmation is proof of purchase, so keep it in a safe place.

John Lewis offers repair services through authorized technicians, and they can also arrange replacement if the microwave cannot be repaired. Do not attempt to repair the microwave yourself, as the high-voltage components inside can cause serious injury even when the microwave is unplugged.

Storing your microwave safely

If you need to store your microwave temporarily or move it, wrap it in a blanket or moving blanket to protect the exterior from scratches and dents. Do not wrap it so tightly that moisture gets trapped inside. Store it upright in a dry place—never on its side or upside down, as this can damage internal components.

Before you use it again after storage, wipe the interior and exterior with a dry cloth, check that the turntable spins freely, and run it empty for a few seconds to make sure it powers on. If it does not heat after storage, contact John Lewis before using it further.

Frequently Asked Questions

Can I use vinegar and baking soda to clean the inside of my John Lewis microwave?

Yes. Mix baking soda with a little water to make a paste, apply it to stubborn stains inside the microwave, let it sit for 10 minutes, then wipe it away with a damp cloth. Vinegar in water (1 tablespoon per bowl) also works well and leaves no residue. Both are safe for microwave interiors and do not damage the surfaces.

Why does my microwave smell bad even after I clean it?

Odors usually come from trapped moisture in the door seal, a saturated charcoal filter, or mold growing in hard-to-reach corners. Clean the door seal thoroughly and dry it completely. If your model has a charcoal filter, replace it. If the smell persists, place a bowl of baking soda inside the microwave overnight with the door closed—baking soda absorbs odors naturally.

Is it safe to microwave plastic containers from John Lewis food products?

Only if the container is labeled microwave-safe. Check the bottom of the container for a microwave symbol (usually a box with wavy lines). If there is no label, transfer the food to a microwave-safe glass or ceramic dish instead. Heating non-microwave-safe plastic can release chemicals into your food.

How do I know if the turntable is broken?

Place the turntable back in the microwave, close the door, and run it on high for 10 seconds with nothing inside (or with a cup of water). The turntable should spin smoothly. If it does not spin, does not spin evenly, or makes grinding noises, it may be damaged. Contact John Lewis to order a replacement turntable for your model.

What should I do if the microwave door will not close properly?

First, check the door seal for food debris or moisture and clean it thoroughly. Make sure the turntable is seated correctly and not blocking the door. If the door still will not close, the latch or seal may be damaged. Do not force the door closed, as this can cause further damage. Contact John Lewis customer service for repair or replacement.