E7
Daewoo Internal EEPROM / Control Board Communication Error

Display shows E7 and the unit will not start; sometimes appears after a power surge.

Advertisements

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.

Advertisements

Possible Causes

Corrupted firmware in control IC, Failed EEPROM chip, Poor solder joints on microcontroller, Severe power surge damage to PCB

How to Fix / Troubleshooting

Safety first: Disconnect from mains before opening the housing. This fault is mostly electronic and may require board replacement.

Steps:

  • 1. Power cycle: Unplug the air fryer for at least 15 minutes to allow capacitors to discharge. Plug back in and check if E7 clears.
  • 2. Factory reset (if supported): Some Daewoo models allow a reset by holding specific buttons (e.g., POWER + START) for several seconds. Refer to the user manual for your exact model.
  • 3. Inspect PCB: Remove the control panel cover and examine the main PCB. Look for burn marks, cracked ICs, or corrosion from moisture.
  • 4. Check connectors: Reseat all ribbon cables and harnesses between the display board and main control board.

Important: If E7 persists after resets and connector checks, the control PCB or its firmware is likely defective. Replacement of the entire control module is usually required and is a level of repair best handled by a service center.

Advertisements

Repair Difficulty

Professional Required 5/5

Required Part

Main Control PCB
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements