Frigidaire FFMV1645TS Repair Guide
A value-focused 1.6 cu ft over-the-range microwave that turns up constantly in apartments and rental property. Simple, inexpensive, and worth repairing for the cheap faults but not the expensive ones.
Common problems & typical repair costs
| Problem | Likely cause | Typical fix | OEM part # | Typical cost |
|---|---|---|---|---|
| Dead with no display | Fuse blown by an interlock failure | Replace interlock switches and fuse | — | $105–$250 |
| No heating | Magnetron or diode failure | Weigh repair against replacement on a unit this cheap | — | $155–$380 |
| Poor extraction | Grease filters never cleaned, or a saturated charcoal filter | Wash filters; replace charcoal filter | — | $0–$50 |
| Turntable stopped | Coupler or roller ring worn | Replace from inside the cavity | — | $10–$45 |
| Door latch broken | Latch hooks snapped | Replace latch assembly | — | $95–$235 |
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 | Control or touch panel fault |
| F3 | Shorted key |
| door | Door sensing fault |
Tech notes
In rental property these are almost always installed recirculating rather than ducted outside, which means a charcoal filter behind the top grille that has never been changed. Check for one before diagnosing weak venting 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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We'll buy your Frigidaire FFMV1645TS — or haul it away.
If the repair costs more than this machine is worth to you, we'll quote you on taking it. Cash offer if it still has value, free or paid scrap pickup if it doesn't. We'll tell you honestly which it is.