Installation guide
Owner’s manual
What are the dimensions of the mwv150kba?
The MWV150KBA is a different Frigidaire over-the-range microwave than model FFMV1745TSA. For MWV150KBA, the overall outside dimensions are 29-7/8 in. wide x 15-1/32 in. deep x 16-13/32 in. high; typical cabinet cutout space is 30 in. wide x 14 in. deep x 17 in. high. For exact fit and venting details on FFMV1745TSA, use the FFMV1745TSA installation guide.
Microwave sizing gets confusing because “dimensions” can mean different measurements.
- Outside dimensions: the full unit size (often includes the handle)
- Cutout/cabinet space: the minimum space needed between cabinets
- Mounting and venting clearance: space for the mounting plate, duct adapter, and damper swing
- Duct size: common options are 3-1/4 in. x 10 in. rectangular or 6 in. round
Before ordering or installing, we recommend checking these items:
- Measure cabinet opening width and height (front and back)
- Confirm depth to the front edge of cabinets (and any trim)
- Verify the venting route (top exhaust, back exhaust, or recirculating)
- Check duct type and total equivalent duct length (elbows and caps add resistance)
- Confirm electrical supply is 120V, 60Hz on a dedicated circuit
| Measurement type | What it tells you | Example for MWV150KBA |
|---|---|---|
| Outside dimensions | Physical size of the microwave | 29-7/8" W x 15-1/32" D x 16-13/32" H |
| Cutout dimensions | Minimum cabinet space needed | 30" W x 14" D x 17" H |
If the outside dimensions fit but the cutout or venting clearances do not, the microwave can bind against cabinets, the damper may not swing freely, or the exhaust airflow can be restricted. That can lead to poor ventilation performance and extra noise.
Last updated: February 2026
How many amps does a Frigidaire microwave pull?
For the Frigidaire FFMV1745TSA microwave/hood combo, the electrical supply requirement is a 120V, 60Hz circuit protected at 15 amps or more. In normal use, the microwave’s actual current draw varies by cooking power level and what else is running (fan, lights), but it is designed for a dedicated 15A branch circuit.
The 15A figure is the recommended circuit protection size, not a constant “always 15 amps” draw.
- Use a properly grounded 3-prong outlet.
- Avoid extension cords.
- A separate circuit for the microwave helps prevent nuisance trips.
- Current draw can increase when the hood fan and work light are on.
- If the breaker trips, check for other loads on the same circuit first.
| Item | What to expect for FFMV1745TSA | Why it matters |
|---|---|---|
| Supply voltage | 120V AC, 60Hz | Required for correct operation |
| Circuit protection | 15A or more | Prevents overheating and nuisance trips |
| Outlet type | Grounded 3-prong | Reduces shock risk |
| Extension cord | Do not use | Prevents voltage drop and overheating |
If the microwave is dead, resets, or trips the breaker, start with these checks:
- Confirm the outlet has power (try a lamp or meter).
- Check the home fuse/circuit breaker.
- Make sure the plug is fully seated.
- If the unit runs but stops when the door moves, inspect door-switch related parts such as the microwave door interlock switch 5304509459 and latch components.
Microwaves are high-wattage appliances; using the correct 120V, 15A (or higher) protected circuit helps the FFMV1745TSA heat properly and reduces shutdowns, breaker trips, and intermittent operation.
For exact electrical and installation placement details, follow the installation guide.
Last updated: February 2026
What is the average lifespan of a Frigidaire microwave?
A Frigidaire microwave typically lasts 9 years. For an over-the-range microwave/hood combo like model FFMV1745TSA, plan on 7 to 10 years of normal use; heavy daily use and poor airflow can shorten life, while routine cleaning and filter changes help it reach the high end of that range.
- Heat and ventilation: Grease buildup and restricted airflow make internal components run hotter.
- Door use and slamming: Wears the latch and door interlock system.
- Power quality: Surges and frequent breaker trips stress the control board.
- Cleaning habits: Food splatter and grease can lead to arcing and corrosion.
- Filter maintenance: Recirculating setups rely on a charcoal filter that needs regular replacement.
Use the care steps in the owner's manual and keep these habits consistent:
- Wipe the cavity and door seals weekly; avoid abrasive pads.
- Keep the vent grille clear; clean grease filters regularly.
- Replace the charcoal filter every 6 to 12 months if you use recirculating (non-vented) mode.
- Use microwave-safe cookware only; never run the oven empty.
- Stop using the unit if the door does not close firmly or the latch feels loose.
| If your microwave is… | Typical next step | Why |
|---|---|---|
| Under ~7 years old | Repair is often worthwhile | More remaining service life |
| 7 to 10 years old | Compare part cost to replacement | Big parts can be expensive |
| Over 10 years old | Replace more often than repair | Multiple wear items tend to stack up |
If symptoms point to a specific failure, these parts are commonly involved:
- Door won’t start or stops when closing: microwave door interlock switch 5304509459
- Door won’t latch smoothly: microwave latch body 5304509457
- No heat (with other functions working): microwave diode 5304509479 or microwave high-voltage capacitor 5304509478
Microwaves often “age out” from heat stress and door-switch wear. Staying on top of airflow, cleaning, and filter changes reduces overheating and nuisance shutdowns, which helps your FFMV1745TSA reach its expected lifespan.
Last updated: February 2026
