Maytag MMV1174FZ Repair Guide
A Whirlpool-built 1.7 cu ft over-the-range microwave in Maytag trim with a stainless interior. Parts are shared across the Whirlpool line, which keeps them cheap and available well past the model’s production run.
Common problems & typical repair costs
| Problem | Likely cause | Typical fix | OEM part # | Typical cost |
|---|---|---|---|---|
| No heat | Magnetron or diode failure | Professional high-voltage repair | — | $160–$395 |
| Totally dead | Fuse blown by interlock failure | Replace switches and fuse | — | $110–$260 |
| Turntable stopped | Roller ring or coupler worn | Replace from inside the cavity | — | $10–$45 |
| Sparks in the cavity | Waveguide cover burned through | Replace waveguide cover | — | $5–$60 |
| Vent fan noisy | Blower wheel loose or bearings dry | Replace blower motor | — | $150–$315 |
Costs are national averages for professional repair (parts + labor). See the linked cost guides below for full breakdowns.
Error codes
| Code | What it means |
|---|---|
| F2 | Shorted keypad |
| F6 | Sensor fault |
| Open/Close Door | Door not sensed as closed |
Tech notes
A stainless cavity tolerates cleaning better than enamel, which means owners scrub it and never look at the waveguide cover on the side wall. That cover is still mica and still a wear item — check it on every arcing call regardless of how clean the cavity looks.
Sources
Where the safety, regulatory and warranty claims on this page come from. Repair costs are our own figures based on Arizona market rates and OEM parts pricing.
- Microwave Ovens — Radiation-Emitting Products U.S. Food & Drug Administration The federal requirement for two independent door interlocks plus a monitoring system, and the 21 CFR 1030.10 leakage limit — why an interlock must never be bypassed.
Cost guides for this machine’s common repairs
DIY step-by-step instructions for this model
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