E4
Chefman Lid / Brew Head Position Switch Error

Display shows E4 and the coffee maker will not start brewing.

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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

Brew lid not fully closed, Lid latch microswitch misaligned or stuck, Broken lid hinge or latch tab, Wiring to lid switch damaged

How to Fix / Troubleshooting

Safety first: Unplug the coffee maker before manipulating the lid or brew head.

Check lid closure:

  • Open and firmly close the brew lid several times. Listen for a distinct click from the internal microswitch.
  • Ensure no coffee pod, grounds basket, or paper filter is preventing the lid from closing fully.
  • Inspect the lid latch and hinge for cracks or deformation. If the lid does not align properly, the switch may not engage.

Clean the latch area:

  • Wipe away coffee residue around the latch and switch area with a damp cloth. Sticky residue can prevent full closure.

If E4 persists:

  • The lid position microswitch or its wiring may be faulty. Replacing the switch or the entire brew lid assembly is usually required and may involve opening the housing.
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Repair Difficulty

Medium 3/5

Required Part

Lid Position Microswitch
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