Cosori
Start Command Not Reaching Control Board
Display works but the start button does nothing; unit will not begin cooking.
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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/pause button on keypad, Basket not detected as inserted, Door/basket microswitch failure, Control board input failure
How to Fix / Troubleshooting
Safety first: Unplug before internal checks.
- Step 1 – Confirm basket seating: Remove and firmly reinsert the basket/drawer. Ensure it is fully closed and latched.
- Step 2 – Try other buttons: If other buttons (temperature, time) respond but start does not, the start key on the keypad may be faulty.
- Step 3 – Check basket switch: Access the basket detection microswitch and test continuity when the basket is inserted. Replace the basket detection microswitch if it does not close.
- Step 4 – Inspect keypad connection: Reseat the keypad ribbon cable on the control interface board and main PCB.
- Step 5 – Replace keypad or board: If the start button is physically worn or unresponsive, replace the control interface board / keypad. If the keypad is good but the board does not register the command, replace the main control PCB.
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Repair Difficulty
Medium
3/5
Required Part
Control Interface Board / Basket Detection Microswitch
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