Zojirushi
Start Circuit / Safety Interlock Not Engaging
Unit powers on but will not start cooking; pressing START does nothing or beeps without starting, and no error code is shown.
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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
Lid not detected as closed, Inner pan not detected, Faulty START button, Control board logic fault
How to Fix / Troubleshooting
Safety first: Unplug before cleaning or inspecting mechanical parts.
- Confirm setup: Ensure the inner pan is installed, the lid is fully closed, and all caps/gaskets are in place.
- Check lid closure: Open and close the lid firmly until it clicks. Listen for the lid switch engaging.
- Test buttons: Press other buttons (menu, timer) to see if they respond. If only START is unresponsive, the keypad may be failing.
- Power reset: Unplug for 5–10 minutes, then plug back in and try again.
When to call a technician: If the unit will not start despite correct setup and a reset, the lid switch, keypad, or control board may require replacement.
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Repair Difficulty
Medium
3/5
Required Part
Lid Switch Assembly, Control Panel Keypad, Main Control PCB
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