Maytag MMV4207JZ Repair Guide
A Whirlpool-built 2.0 cu ft over-the-range microwave in Maytag trim with a stainless cavity and 400 CFM venting. Shares parts across the Whirlpool line.
Common problems & typical repair costs
| Problem | Likely cause | Typical fix | OEM part # | Typical cost |
|---|---|---|---|---|
| No heat | Magnetron or diode failure | Professional high-voltage repair | — | $170–$410 |
| Totally dead | Fuse blown by interlock failure | Replace switches and fuse | — | $115–$265 |
| Turntable stopped | Roller ring or coupler worn | Replace from inside the cavity | — | $10–$45 |
| Loud vent fan | Blower wheel loose or bearings dry | Replace blower motor | — | $160–$330 |
| Sparks in the cavity | Waveguide cover burned through | Replace waveguide cover | — | $5–$60 |
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 gets scrubbed and looks spotless while the mica waveguide cover on the side wall goes unnoticed. Check it on every arcing call regardless of how clean the cavity appears.
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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