E7
Kenwood
Input Voltage / Power Supply Error
E7 appears and the air fryer will not start; sometimes occurs when plugging in or after a power cut.
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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
Supply voltage out of range, Internal SMPS power board fault, Loose mains connector or damaged power cord, Surge damage to main PCB
How to Fix / Troubleshooting
Safety: Unplug the unit before any inspection. Do not operate with exposed live parts.
- Check mains supply: Verify that you are using the correct voltage (e.g., 220–240 V for UK/EU models). Avoid using long, undersized extension leads.
- Inspect power cord: Look for cuts, kinks, or burn marks on the Kenwood power cord and plug. Replace the cord set if any damage is found.
- Socket test: Try a different wall outlet that you know is good. Avoid multi‑way adapters or overloaded strips.
- Internal inspection: Remove the cover and inspect the power input area and SMPS section on the PCB for burnt components, bulging capacitors, or cracked solder joints. Any visible damage usually requires PCB replacement.
- Surge protection: After repair, use a surge‑protected outlet to reduce the risk of future E7 errors from power spikes.
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Repair Difficulty
Hard
4/5
Required Part
Main Control PCB (Power Supply Section)
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