E8
Crux
Low Voltage / Power Supply Regulation Error
E8 error code appears; unit may power on but controls are unresponsive or shut down unexpectedly.
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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 internal power supply on main PCB, Loose mains connector, Defective line filter or varistor, Shorted low-voltage component on control board
How to Fix / Troubleshooting
Safety first: Unplug the air fryer. Power supply faults involve high voltage; if you are not trained, seek professional service.
- Check outlet and cord: Verify the wall outlet has proper voltage using another appliance. Inspect the Crux power cord and plug for damage or looseness.
- Inspect internal connections: Remove the housing and check the mains input connector, line filter, and wiring to the main control PCB. Tighten any loose spade terminals.
- Look for burnt components: On the PCB, inspect the power supply section (near where the mains enters) for burnt resistors, cracked capacitors, or a damaged varistor. Any visibly damaged components usually require full PCB replacement.
- Do not bypass safety parts: Never bypass fuses, varistors, or line filters. Replace the entire main control PCB or power module with a Crux-approved part.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control PCB
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