Frigidaire FFMV1846VS Repair Guide
A 1.8 cu ft over-the-range microwave with a 300 CFM vent, sold heavily into apartment refits and mid-range kitchens. Straightforward to service, with the usual over-the-range weak points around the door, the vent and the control panel.
Common problems & typical repair costs
| Problem | Likely cause | Typical fix | OEM part # | Typical cost |
|---|---|---|---|---|
| Runs but does not heat | Magnetron or high-voltage diode failure | Professional high-voltage repair | — | $160–$400 |
| No power, blown fuse | Door interlock switch failure | Replace interlock set and fuse together | — | $110–$260 |
| Door hard to close or will not latch | Latch hooks worn or door spring failed | Replace latch assembly | — | $100–$250 |
| Fan weak, kitchen smoky when cooking | Grease filters loaded, or recirculating install with a saturated charcoal filter | Wash grease filters; replace charcoal filter | — | $0–$50 |
| Light out over the cooktop | Bulb failed or socket corroded | Replace bulb; socket replacement needs cabinet access | — | $5–$180 |
Costs are national averages for professional repair (parts + labor). See the linked cost guides below for full breakdowns.
Error codes
| Code | What it means |
|---|---|
| F1 | Touch panel or control fault |
| F3 | Shorted key on the keypad |
| door | Door sensing fault — interlocks or latch |
Tech notes
Apartment installations of this model are very often set up to recirculate rather than vent outside, which means a charcoal filter that nobody has ever changed. Check for one behind the top grille before diagnosing a weak-venting complaint as a blower fault.
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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