Sharp
Main power or heating circuit failure
Oven does not heat at all in any mode (no bake, no grill, no convection) but display and lights work.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Tripped thermal fuse, open main power relay on control board, loose connection at terminal block, both bake and grill elements open
How to Fix / Troubleshooting
Safety: Turn off power at the breaker and verify with a tester before touching wiring.
- Check breakers: Ensure the oven's circuit breaker(s) are fully on. Some installations use two linked breakers; both must be on.
- Inspect terminal block: Remove the rear cover to access the mains terminal block. Look for burnt or loose wires. Tighten screws and replace damaged wires or block.
- Test thermal fuse: Locate the main thermal fuse (often on the top or rear of the cavity). Test for continuity; replace if open.
- Check elements: Test both bake and grill elements for continuity. If both are open, replace them. If elements and fuse are good, suspect the main relay or control board.
- Control board: If no voltage is sent to any element during a heat command, the EOC or power relay board likely needs replacement.
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Repair Difficulty
Hard
4/5
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