Whirlpool UMV1170LW00 microwave\hood combo Parts

For the Whirlpool UMV1170LW00 microwave/hood combo, we replace the charcoal (odor) filter about every 6 months with typical cooking use; the metal grease filter is usually cleaned monthly and replaced only if it is damaged or won’t come clean.

Which filter are you talking about?

Microwave/hood combos commonly use two different filter types:

• Grease filter (metal mesh): catches grease from the cooktop; washable and reusable
• Charcoal filter (carbon): reduces odors in recirculating (non-vented) setups; not washable
• No charcoal filter needed if your unit vents outside (ducted)

Recommended schedule (typical home use)

Filter type	What to do	How often
Grease filter (metal)	Wash and dry completely	About once a month
Charcoal filter (carbon)	Replace	About every 6 months

Signs it’s time sooner

Replace or service the filter sooner if you notice:

• Lingering cooking odors even with the fan on high
• Grease buildup or dripping from the filter area
• Reduced airflow from the hood fan
• Filter is bent, torn, or the mesh is separating

Parts that are commonly replaced for airflow and odor issues

If you’re servicing the venting system on UMV1170LW00, these parts are often involved:

• Filter W10208631A (grease filter): replace if damaged or permanently clogged
• Check the vent grille and duct path for grease buildup (especially in ducted installs)

Why it matters

A clean grease filter helps protect the fan and internal surfaces from grease buildup, and a fresh charcoal filter keeps odors under control in recirculating setups. Staying on schedule helps the hood fan move air efficiently and keeps the microwave area cleaner.

Last updated: February 2026

For the Whirlpool UMV1170LW00 microwave/hood combo, the vent cover you see on the front top is typically the vent grille. We remove it by shutting off power, opening the door, then removing the grille screws and sliding the grille off so you can access components behind it.

Before you start (safety first)

• Unplug the microwave or switch off the circuit breaker.
• Let the cooktop light and surfaces cool completely.
• Protect the range with a towel to prevent scratches.
• Use a #2 Phillips screwdriver; keep screws in a cup.

Steps to remove the vent grille (top front cover)

1. Open the microwave door.
2. Locate the screws along the top edge of the grille (usually 2 to 3 screws).
3. Remove the screws.
4. Slide the grille to the left (or toward the side with the locking tabs), then pull it forward to release it.
5. Set the grille aside.

If the grille will not slide off

• Check for a hidden screw near one end cap.
• Push the grille slightly upward while sliding to disengage tabs.
• Confirm you removed all visible screws with the door open.

What you can access after the grille is off

Once the grille is removed, you can commonly reach items like the control area and some mounting points. If you are removing the microwave from the wall, the grille removal is often an early step, along with removing the microwave mounting plate W11025649.

Task	Grille removal needed?	Typical next step
Clean vent area	Yes	Wipe and reinstall grille
Replace control panel	Often	Remove control panel fasteners
Remove microwave from wall	Often	Support unit, remove top bolts

Why it matters

Removing the vent grille the right way prevents broken plastic tabs, stripped screws, and misalignment that can cause rattles or poor venting performance.

Last updated: February 2026

A Whirlpool microwave like model UMV1170LW00 is built from cooking components (cavity, door, turntable system), control components (keypad and control board), and high-voltage components that create microwave energy. In a microwave/hood combo, it also includes a vent fan, lights, and filters.

Main microwave parts (what they do)

• Magnetron: generates the microwave energy that heats food (common failure symptom: heats poorly or not at all).
• High-voltage system: steps up and routes power to the magnetron.
• Control system: runs cook cycles, timing, and safety monitoring.
• Door and interlocks: keep the unit from running with the door open.
• Turntable system: rotates food for more even heating.
• Hood system: moves air and captures grease and odors.

Common UMV1170LW00 parts you may replace

These are some frequently serviced items for this Whirlpool microwave/hood combo:

• Microwave magnetron W10754299
• Transformer, high voltage W11545871
• Capacitor W10850446
• Microwave fuse W11707984
• Microwave/hood light bulb 8206232A
• Filter W10208631A

Quick map: symptom to likely area

Symptom	Most likely part area	Example part for UMV1170LW00
Runs but does not heat	High-voltage system	Magnetron, capacitor, diode, transformer
Completely dead (no display)	Power input or protection	Fuse, control board
Light out under microwave	Lighting	Hood light bulb
Poor venting or greasy buildup	Hood airflow/filtration	Grease filter

Why it matters

Knowing the major assemblies helps you troubleshoot faster and order the right replacement part the first time. For example, a “no heat” complaint usually points to the high-voltage circuit, while a “no power” complaint often starts with the fuse and control.

Last updated: February 2026

Common problems we see with Whirlpool microwaves (including model UMV1170LW00) are no heat, no power, won’t start, loud noises, sparking, weak venting, and light or keypad issues. Many are caused by door-switch problems, power supply issues, or worn parts; heating failures often involve high-voltage components.

Quick checks you can do first

• Confirm the outlet has power (try a lamp or reset the breaker).
• Make sure the door closes firmly and the latch area is clean.
• Try a simple reset: unplug for 2 minutes, then plug back in.
• If it runs but does not heat, stop using it until it’s diagnosed (high voltage risk).
• If the hood fan seems weak, clean the grease filter and check for blocked airflow.

Common symptoms and the most likely causes

Symptom	What it usually points to	Parts often involved on UMV1170LW00
Runs but does not heat	High-voltage circuit problem	Microwave magnetron W10754299, gaoxin-hvd c W11256462, capacitor W10850446
Completely dead (no display)	Blown fuse or power issue	Microwave fuse W11707984
Light not working	Burned-out bulb or cover issue	Microwave/hood light bulb 8206232A
Loud hum/buzz while heating	Magnetron or HV component strain	Microwave magnetron W10754299, transformer, high voltage W11545871
Hood venting poor	Grease buildup or airflow restriction	Filter W10208631A

Why it matters

Microwave/hood combos like the Whirlpool UMV1170LW00 combine cooking and ventilation. A “no heat” complaint is often a high-voltage failure, while “no power” is commonly a fuse or supply issue. Correct diagnosis prevents repeat failures and avoids unsafe testing.

Safety notes for DIY troubleshooting

• Always unplug the microwave before removing any panels.
• Do not attempt to test or replace high-voltage parts unless you are trained; the capacitor can hold a dangerous charge.
• If you smell burning, see arcing, or hear popping, stop using the unit and have it serviced.

For basic electrical diagnosis, we use steps like those in how to tell if a fuse is blown and how to use a multimeter to test electrical parts video.

Last updated: February 2026