Maytag MMV4207JZ Microwave Repair

The MMV4207JZ is an over-the-range microwave at 1.9 cu ft in the Dual Crisp line, and it is still sold new. The line name is the only feature we state here; for repair, what matters is that the unit combines a heating cavity with an exhaust fan above your range. The general page, Maytag microwave repair, and the Maytag microwaves guide give the wider view.

Complaints we hear on this type

A microwave that hums but does not warm food, a plate that stops rotating, a keypad that no longer registers, a fan that sounds rough, or a display that shows a code are the usual stories. Since this model carries a thermal-sensing setup, we also see calls where it starts, then stops with an error.

What the codes say

E21 and E22 describe an open and a shorted thermal sensor circuit. F3T3 refers to the hood temperature thermistor. F2 says the keypad reported a problem. These describe areas for the technician to test, not a certain part.

Over-the-range realities

San Francisco kitchens often stack a microwave over a gas range, so heat and grease rise straight into the unit. Vents that were never cleaned and a ducting run that bends sharply can increase heat around the hood area. A technician checks the filters, the duct opening and the range below as part of the picture, not only the microwave.

Checks you can do

1. Confirm the breaker is on; switch off and on once.
2. Clean the grease filters under the unit.
3. Check the door for food in the latch area.
4. Write down the code and whether the fan or the cavity failed.

Do not run the unit empty, and never open the case.

Which number

Three over-the-range models share this lineup: the MMV1175JZ, this one, and the MMV6190FZ. Copy the number from the door frame exactly; how to find your Maytag model number explains where to look. For a heating fault, read about a microwave not heating.

The visit begins with a diagnosis, followed by a written estimate and your approval.

Frequently asked questions