Sharp Microwave Combi Oven Error EE4

⚡ Quick Answer: The EE4 error code on your Sharp microwave combi oven indicates a high voltage issue, often caused by incoming mains voltage exceeding acceptable leve... ✅ DIY Fixable

What Does Error EE4 Mean?

The EE4 error code on your Sharp microwave combi oven indicates a high voltage issue, often caused by incoming mains voltage exceeding acceptable levels. This error may manifest as erratic temperature readings, operational shutdowns, or a complete failure to heat. It's essential to address this promptly to prevent potential damage to the appliance.

Common Symptoms:

  • Error appears on display when unit is powered on or during operation
  • Microwave may shut down or refuse to operate due to voltage abnormality

Possible Causes

  • High incoming mains voltage beyond design range (high)

How to Fix Error EE4

DIY Fix Check household power supply and restart

  1. Turn off the microwave and unplug it from the power outlet.
  2. Check if other appliances on the same circuit exhibit issues (flickering lights, resets).
  3. Plug the microwave into a different outlet on a properly grounded circuit.
  4. Try powering the microwave again to see if error clears.

Technician Only Verify and correct supply voltage and inspect internal components

  1. Measure mains voltage at the outlet to confirm it is within acceptable range for the specific Sharp model (e.g., typically around 230/208 V depending on region).
  2. Inspect line filters, power entry modules, and voltage selection settings if applicable.
  3. Check for any damage or stress on the control board caused by over‑voltage events.
  4. Replace any damaged power supply components (e.g., voltage regulators) as needed.

Parts needed: line filter, power entry module, control board / power supply components

🛑 When to Call a Pro:
  • If the EE4 error persists after checking power supply
  • If there are signs of internal damage such as burning smell or inconsistent operation

Next step

Choose the next step for EE4

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Based on diagnostic data

Most relevant component to inspect

Main Control Board

The central brain of the appliance that controls all components, cycles, and timings.

Typical part-only price
$120 - $280
DIY difficulty
Medium
Estimated time
20-40 mins
Where can I find the model number?

Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.

Find a part that fits my model

Verify the complete model and part number on the retailer's compatibility page before ordering.

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.

Technical Specifications

wattage 1000W
component Temperature Sensor
resistance 1000 ohms
part_number SHARP 2MZ-1
voltage_rating 120V AC

Common Questions

What does EE4 error mean on sharp microwave combi oven?

EE4 indicates high voltage supply issues leading to erratic operations.

Can I fix sharp microwave combi oven EE4 error myself?

Yes, check the power supply and try a different outlet.

How much does it cost to fix EE4 error?

Repair costs range from ¥10,000 to ¥50,000, depending on parts and labor.

When should I call a technician for EE4?

Call if the error persists after checking the power supply or if you notice internal damage.

Data last verified: 2026-03-18

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