Skip to main contentStart diagnosing EE4 on your Sharp microwave
What this code means
Supply voltage is too high.
First step from the service manual
Check power supply voltage and voltage select switch setting (208V/230V).
Next steps: diagnose the root cause
1
Verify the error code is active
Power cycle the unit and see if the code returns. If it does, the fault is persistent and requires diagnosis.
2
Get the full diagnostic procedure
Get step-by-step guidance, test values, and wiring diagrams from the OEM service manual.
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What’s available for Sharp microwave models
Access Sharp microwave service manuals, wiring schematics, exploded parts views, and error code references on MyPros+.