Dacor DMW2420S 24 in 1.2 cu ft 1000W Sensor Microwave Oven F3 Error Fix: Touchpad Short Circuit

Error code F3 on the Dacor DMW2420S 24 in 1.2 cu ft 1000W Sensor Microwave Oven means: Touchpad Short Circuit. The control panel touchpad has a short circuit — a key is being detected as continuously pressed without user input. This may be caused by moisture behind the panel, a cracked touchpad membrane, or a control board fault. Disconnect power for 5 minutes and restore. If F3 appears immediately, the touchpad membrane has a permanent short and must be replaced. On some Dacor microwaves, the touchpad is integrated with the control board — both may need replacement as a single assembly.

The most successful fix is "Replace Touchpad Membrane or Control Board Assembly" (hard difficulty, ~60 minutes). Estimated DIY cost: $50-$80. HomeMD has 2 community-ranked fixes for this error.

This error is rated high severity. You should address it promptly — continued use could cause damage or safety concerns.

Yes — the top-ranked community fix ("Replace Touchpad Membrane or Control Board Assembly") is rated hard difficulty and takes about 60 minutes. Tools needed: T20 Torx screwdriver, Needle-nose pliers.

DIY cost: $50-$80. Professional repair typically costs $180-$250. Many homeowners save money by trying the top-ranked community fix first.

The Dacor DMW2420S 24 in 1.2 cu ft 1000W Sensor Microwave Oven has 6 other known error codes, including: F1 (Open Temperature Sensor), MECH-LATCH (Door Latch Mechanism Broken), MECH-LIGHT (Interior Cavity Light Failure), MECH-SEAL (Door Seal Deterioration), MECH-TURNTABLE (Turntable Motor Failure), and 1 more.

Error code F3 also appears on 6 other Dacor models: DOB30M977DS 30 in 4.8 cu ft True Convection Wall Oven with WiFi, DOC30M977DS 30 in 4.8 cu ft Combination Wall Oven with Microwave and True Convection, DOP48M96DPS 48 in 6 Burner 5.5 cu ft 18,000 BTU Modernist Dual Fuel Range, DP36M96NDS Pro 36" Dual Fuel, ER30DSCH Distinctive Dual-Fuel Range, HWO230PS Heritage Wall Oven. The fix may vary by model, so check each model's specific page for tailored repair steps.