KitchenAid KMHC319ESS Repair Guide
A convection over-the-range microwave that bakes, roasts and crisps as well as microwaving, using a heating element and fan alongside the magnetron. It is effectively two appliances sharing a cabinet, and each half fails independently.
Common problems & typical repair costs
| Problem | Likely cause | Typical fix | OEM part # | Typical cost |
|---|---|---|---|---|
| Microwave works, convection does not heat | Convection element or its relay failed | Replace convection element or relay | — | $220–$470 |
| Convection works, no microwave heat | Magnetron or diode failure | Professional high-voltage repair | — | $190–$450 |
| Loud noise on convection cycles only | Convection fan motor bearings | Replace convection fan motor | — | $190–$420 |
| Unit dead | Interlock failure, blown fuse | Replace interlock set and fuse | — | $125–$285 |
| Control panel degrading | Years of cooktop steam on the membrane and board | Replace panel or board as diagnosed | — | $190–$430 |
Costs are national averages for professional repair (parts + labor). See the linked cost guides below for full breakdowns.
Error codes
| Code | What it means |
|---|---|
| F2E1 | Shorted keypad |
| F3E0 | Temperature sensor fault (convection) |
| F6E1 | Control communication fault |
| Open/Close Door | Door sensing fault |
Tech notes
Always establish which function failed before quoting on a convection microwave. "It does not heat" can mean the magnetron or the convection element, they are entirely separate systems, and there can be a $250 difference between the two answers.
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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