F4
Hotpoint · RVM5160DHWW 1.6 cu ft Over-the-Range Microwave with 1000 Watts and Sensor Cooking
The humidity sensor circuit is open — the sensor used for sensor cooking and auto-cook functions cannot detect moisture/steam levels inside the cavity to determine when food is done; manual cooking modes still work normally; the humidity sensor is a small component mounted in the microwave cavity wall that detects steam from cooking food; on budget Hotpoint models, this sensor may not be present (and F4 will not appear); if the model has sensor cooking capability and F4 appears, the sensor may need cleaning (grease buildup from stovetop cooking below) or replacement
Error F4 on the Hotpoint RVM5160DHWW 1.6 cu ft Over-the-Range Microwave with 1000 Watts and Sensor Cooking means: Humidity Sensor Open Circuit. The top-ranked community fix is “Replace the Humidity Sensor Component” (medium difficulty, ~40 min, DIY cost: $15-$25). 2 community-ranked fixes available below.
Published February 2026 · 2 fixes · microwave
Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.
While many microwave repairs can be done safely at home, consider hiring a qualified technician if:
Average professional repair cost for this issue: $110-$160.
Oven Cavity Thermistor Open Circuit
Oven Cavity Thermistor Shorted
Shorted Touch Pad — Stuck Key Detected
Sparking or Arcing Inside Cavity
Exhaust Fan Not Working or Always Running on High
Door Interlock Switch Failure — Blows Fuse
Door Latch Assembly Broken — Door Won't Close
Interior Light or Range Light Not Working
The Hotpoint RVM5160DHWW 1.6 cu ft Over-the-Range Microwave with 1000 Watts and Sensor Cooking has 8 other known error codes:
Error code F4 also appears on 2 other Hotpoint models:
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