E9
Chefman
Low Voltage / Power Supply Fault
E9 error code and unit will not power on fully or shuts off randomly.
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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
Failed internal power supply on control board, Loose AC input wiring, Damaged power cord, Faulty outlet or low line voltage
How to Fix / Troubleshooting
Safety first: Unplug the unit before inspecting the cord or internal wiring. Do not open the unit if you are not comfortable working around mains voltage.
- Check outlet: Test the wall outlet with another appliance to confirm it supplies stable power. Avoid using long extension cords or power strips.
- Inspect power cord: Look for cuts, kinks, or burn marks along the Chefman power cord. If damaged, the cord should be replaced rather than repaired with tape.
- Internal wiring: Remove the rear/bottom cover to access the AC input terminals. Ensure the cord strain relief is intact and the live/neutral connections are tight.
- Power supply section: On the control PCB, visually inspect the power supply components (transformer, rectifier, capacitors). Bulging capacitors or burnt components indicate board failure.
- Replace parts: Replace the power cord if physically damaged. If the internal power supply is faulty, replace the entire main control PCB.
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Repair Difficulty
Hard
4/5
Required Part
Main Control PCB
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