Whirlpool Whirlpool WMH53521HZ 2.1 cu. ft. Over-the-Range Microwave F3E1 Error Fix: Oven Temperature Sensor Open

Error code F3E1 on the Whirlpool Whirlpool WMH53521HZ 2.1 cu. ft. Over-the-Range Microwave means: Oven Temperature Sensor Open. On combination microwave/convection oven units only: the oven temperature sensor (thermistor) has an open circuit. The convection feature will not work without temperature feedback. Test the sensor with a multimeter — it should read approximately 1,080 ohms at 77°F. Replace the sensor if open. Standard microwave-only operation may still work.

The most successful fix is "Replace Oven Temperature Sensor with Multimeter Testing" (hard difficulty, ~45 minutes). Estimated DIY cost: $15-$25. HomeMD has 2 community-ranked fixes for this error.

This error is rated warning severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Yes — the top-ranked community fix ("Replace Oven Temperature Sensor with Multimeter Testing") is rated hard difficulty and takes about 45 minutes. Tools needed: T20 Torx screwdriver, Multimeter, Nut driver set.

DIY cost: $15-$25. Professional repair typically costs $120-$180. Many homeowners save money by trying the top-ranked community fix first.

The Whirlpool Whirlpool WMH53521HZ 2.1 cu. ft. Over-the-Range Microwave has 8 other known error codes, including: F1E1 (Control Board Memory Error), F1E2 (Touchpad Error), F2E0 (Keypad Shorted), F3E0 (Humidity Sensor Fault), F5E1 (Door Switch Error), and 3 more.

Error code F3E1 also appears on 11 other Whirlpool models: Whirlpool WDT750SAKZ 24 in. Top Control Dishwasher, Whirlpool WDTA50SAKZ 47 dBA Top Control Dishwasher with 3rd Rack, Whirlpool WED5000DW 7.4 cu. ft. Electric Dryer, Whirlpool WED75HEFW 7.4 cu. ft. Electric Dryer with Steam, Whirlpool WFE775H0HZ 6.4 cu. ft. Smart Slide-In Electric Range, Whirlpool WFG505M0BS 5.0 cu. ft. Freestanding Gas Range, and 5 more. The fix may vary by model, so check each model's specific page for tailored repair steps.