Sharp Microwave Error H99

⚡ Quick Answer: The Sharp Microwave error code H99 indicates a potential malfunction in the magnetron, which may lead to unusual buzzing sounds and failure to heat fo... ⚠️ Difficulty Varies

What Does Error H99 Mean?

The Sharp Microwave error code H99 indicates a potential malfunction in the magnetron, which may lead to unusual buzzing sounds and failure to heat food properly. If this error persists, it suggests an internal fault that may require professional service for diagnosis and repair.

Possible Causes

  • Magnetron
  • High Voltage Capacitor
  • Control Board

How to Fix Error H99

DIY Fix Basic Initial Troubleshooting

  1. Turn off the microwave and unplug it from the power outlet.
  2. Wait at least 60 seconds and then plug it back in.
  3. Try operating the microwave again to see if the H99 error clears.
🛑 When to Call a Pro:
  • If the error code persists after power cycling / unplugging.
  • If the microwave fails to start, heats incorrectly, or shows additional error behavior.
  • If there are unusual noises, smells of burning, or visible damage to the unit.

Technical Specifications

wattage 1000W
component Magnetron
resistance 0.5-1.5 ohms
part_number R-21M-1
voltage_rating 120V AC

Common Questions

What does H99 error mean on Sharp Microwave?

The H99 error on a Sharp Microwave indicates a malfunction in the magnetron, often leading to buzzing sounds and heating failure.

Can I fix Sharp Microwave H99 error myself?

You can attempt basic troubleshooting by unplugging the microwave for 60 seconds and then plugging it back in to see if the error clears.

How much does it cost to fix H99 error?

Repair costs for the H99 error can vary based on the model and region; consult a local technician for a precise estimate.

When should I call a technician for H99?

Call a technician if the error persists after power cycling, if the microwave fails to start or heat correctly, or if you notice unusual sounds or smells.

Data last verified: 2026-03-18

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