Sharp Microwave Error E12

⚡ Quick Answer: The Sharp Microwave error E12 indicates a malfunction in the convection fan motor, causing the fan to fail to operate when convection, grill, or cook ... ✅ DIY Fixable

What Does Error E12 Mean?

The Sharp Microwave error E12 indicates a malfunction in the convection fan motor, causing the fan to fail to operate when convection, grill, or cook modes are selected. This can lead to unusual buzzing sounds and the microwave's inability to heat food properly. Common causes include a faulty convection fan motor or issues within the fan circuit, such as wiring or connector faults.

Common Symptoms:

  • Convection fan fails to run when convection/grill/cook mode is selected
  • Error code E12 displayed on control panel

Possible Causes

  • Convection fan motor malfunction or failure (medium)
  • Convection fan circuit fault (wiring/connector/board output) (medium)

How to Fix Error E12

DIY Fix Basic checks before service

  1. Ensure microwave is unplugged before any checks
  2. Verify the unit is on a level surface and vents are not blocked
  3. Try resetting the microwave by disconnecting power for several minutes then reconnecting
  4. Observe if error returns specifically when selecting convection mode

Technician Only Convection fan motor and circuit inspection

  1. Unplug the microwave and remove outer cabinet
  2. Inspect convection fan motor for physical damage and free rotation
  3. Test fan motor with appropriate tools (multimeter) to verify winding continuity
  4. Inspect wiring harnesses and connectors to fan motor and control board
  5. Test control board output to fan motor
  6. Replace faulty convection fan motor or repair wiring as needed

Parts needed: Convection fan motor, Fan motor harness and connectors, Control board outputs related to fan

🛑 When to Call a Pro:
  • If error persists after basic reset attempts
  • If fan motor is physically blocked or shows signs of burning or smoke

Technical Specifications

wattage 1000W
component Magnetron
resistance 0-2 ohms
part_number SHARP R-21M-1
voltage_rating 120V AC

Common Questions

What does E12 error mean on Sharp Microwave?

E12 error indicates a convection fan motor malfunction, preventing the fan from running during convection, grill, or cook modes.

Can I fix Sharp Microwave E12 error myself?

Yes, you can perform basic checks like ensuring the unit is unplugged, checking for blockages, and resetting the microwave.

How much does it cost to fix E12 error?

The estimated repair cost for fixing the E12 error ranges from $80 to $250.

When should I call a technician for E12?

Call a technician if the error persists after a reset or if the fan motor shows signs of blockage or burning.

Data last verified: 2026-03-18

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