Sharp R-1214 Stirrer Fan Cover Replacement – Step-by-Step Guide

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Stirrer Fan Cover Replacement Guide

If your Sharp R-1214 commercial-quality microwave has a burned or warped stirrer fan cover (waveguide cover) from arcing, replacing it is a MODERATE difficulty repair. The stirrer fan cover prevents food splatters from entering the waveguide and causing arcing. A damaged cover can cause sparking, arcing, and damage to the magnetron.

Understanding Stirrer Fan Covers

Stirrer fan covers (also called waveguide covers):

  • Protect the waveguide opening from food splatters
  • Prevent arcing and sparking inside the microwave
  • Are typically made of mica or ceramic material
  • Can burn or warp from excessive heat or arcing
  • Are located in the top of the cooking cavity
  • Are relatively inexpensive to replace

A damaged cover can cause serious problems, including magnetron failure, so it should be replaced promptly.

Symptoms of Cover Failure

Common signs that indicate stirrer fan cover failure:

  • Sparking or arcing inside the microwave cavity
  • Burning smell during operation
  • Visible damage to the cover (burned, warped, or cracked)
  • Food particles entering the waveguide area
  • Microwave shuts off due to arcing
  • Reduced heating efficiency

⚠️ Safety Warning

Always unplug the microwave before beginning any repair. Wait 60 seconds after unplugging to allow capacitors to discharge. A damaged stirrer fan cover can cause arcing, which is dangerous and can damage the magnetron.

Parts Needed

Check each product page for other buying options. (Part #: PCOVPA226WRK0)

Note: Ensure you get the correct cover for your specific model. The cover must fit properly to prevent arcing.

Tools Required

  • Phillips Screwdriver – #2 size
  • Flashlight – To see inside the cavity
  • Clean cloth – For cleaning the waveguide area

Step-by-Step Instructions

Step 1: Unplug and Prepare

Unplug the microwave from the wall outlet. Wait at least 60 seconds. Remove any items from inside the microwave. Open the door fully to access the cooking cavity.

Step 2: Locate the Stirrer Fan Cover

The stirrer fan cover is located in the top of the cooking cavity. Look for a cover or grille in the ceiling of the microwave. It may be held in place by screws, clips, or may simply slide into place. The cover protects the waveguide opening where microwaves enter the cavity.

Step 3: Inspect the Cover

Before removing, inspect the cover for:

  • Visible damage, burning, or warping
  • Cracks or holes
  • Food particles or grease buildup
  • Signs of arcing or scorching
  • Proper fit and alignment

Step 4: Remove the Old Cover

The cover may be held in place by screws, clips, or may slide out. Remove any mounting screws using your Phillips screwdriver. If it’s clipped in place, carefully release the clips. If it slides out, gently pull it down. Remove the old cover carefully.

Step 5: Clean the Waveguide Area

While the cover is removed, clean the waveguide area:

  • Remove any food particles or debris
  • Clean the waveguide opening
  • Wipe away any grease or buildup
  • Inspect the waveguide for damage
  • Ensure the area is dry before installing the new cover

Important: If the waveguide shows signs of damage or burning, the microwave may need professional service.

Step 6: Install the New Cover

Position the new Sharp PCOVPA226WRK0 stirrer fan cover in the same location as the old one. Ensure it fits properly and sits flush. The cover should cover the waveguide opening completely. If it has a specific orientation, match it to the original. Secure it with screws or clips, depending on how it’s mounted.

Step 7: Verify Installation

Check that the cover:

  • Sits properly and covers the waveguide opening
  • Is securely mounted (doesn’t wobble or move)
  • Is properly aligned
  • Doesn’t interfere with the stirrer fan operation

Step 8: Test the Installation

Plug the microwave back into the wall outlet. Place a cup of water in the center of the turntable. Start a 1-minute cooking cycle on high power. Monitor for:

  • No sparking or arcing inside the cavity
  • No burning smells
  • Water should heat up normally
  • No unusual sounds
  • Microwave should run for the full cycle without shutting off

If you see sparking or arcing, immediately unplug and check the cover installation and waveguide for damage.

Troubleshooting

If sparking or arcing continues after replacement:

  • Verify the cover is properly installed and seated
  • Check the waveguide for damage or burning
  • Inspect the magnetron (may be damaged from previous arcing)
  • Ensure the cover is the correct size for your model
  • Check for food particles or debris in the waveguide
  • Verify the stirrer fan is working properly

Preventing Future Damage

To prevent stirrer fan cover damage:

  • Keep the microwave interior clean
  • Wipe up food splatters immediately
  • Don’t run the microwave empty for extended periods
  • Avoid placing metal objects in the microwave
  • Clean the cover periodically
  • Replace the cover if it shows any signs of damage

When to Call a Professional

Consider professional help if:

  • The waveguide shows signs of damage or burning
  • The magnetron may have been damaged from arcing
  • Sparking continues after cover replacement
  • Multiple components need attention
  • You’re not confident in your ability to properly install the cover

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