Chefman Start Circuit / Safety Interlock Inhibit

Unit powers on but will not start any cooking program; pressing Start does nothing or cancels immediately.

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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

Faulty Start/Stop button on keypad, Lid not detected as closed, Internal safety interlock (overtemp or overpressure) latched, Control board logic fault

How to Fix / Troubleshooting

Safety first: Unplug the cooker before inspecting internal parts. Do not bypass safety switches.

  • 1. Confirm mode selection: Ensure a valid cooking program and time have been selected before pressing Start. Some Chefman models require pressing Start twice.
  • 2. Check lid and gasket: Make sure the lid is fully locked and the sealing ring is properly installed. Many units will not start pressure modes if the lid is not detected as closed.
  • 3. Test other buttons: If some buttons do not respond or require excessive force, the keypad membrane may be failing. Lightly clean the panel and try again.
  • 4. Hard reset: Unplug for 10–15 minutes, then retry. If the unit still refuses to start any mode, the Start button contact or control board may need replacement.
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Repair Difficulty

Medium 3/5

Required Part

Control Panel Keypad / Lid Lock Switch
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