Bosch Start Inhibit / Safety Interlock Not Engaged

Air fryer powers on but will not start cooking when pressing Start; no error code displayed.

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.

Possible Causes

Basket not fully inserted, Faulty basket detection microswitch, Defective Start/Stop button on touch panel, Control board logic fault

How to Fix / Troubleshooting

Safety first: Unplug before internal inspection.

Quick checks:

1. Basket position: Remove and firmly reinsert the basket and pan until fully seated. Listen for a click from the safety switch.
2. Different program: Try selecting a different preset and then press Start to rule out a program selection issue.
3. Panel test: Press other buttons on the control panel. If some buttons work and Start does not, the touch panel may be faulty.

Internal checks (advanced):

4. Basket switch: Access the basket microswitch and test continuity when the basket is inserted. Replace if it does not change state.
5. Control panel: Inspect the Start button area on the touch PCB for cracks or damage. Replace the UI board if the Start function is unresponsive.

Repair Difficulty

Medium 3/5

Required Part

Basket Microswitch

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