E1
LG Studio
Main PCB Communication or Internal Error
Oven displays E1 and may not heat or may behave erratically.
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
Internal control board fault, corrupted firmware, voltage spike damage, loose harness connections on PCB
How to Fix / Troubleshooting
Safety first: Turn off power at the breaker before accessing internal components.
- Power cycle: Turn the breaker OFF for 5–10 minutes, then ON. If E1 returns immediately, proceed with inspection.
- Inspect PCB connections: Remove the rear upper cover and check all harness connectors to the main PCB. Reseat any loose connectors.
- Look for damage: Check the board for burn marks, bulging capacitors, or corrosion. If present, replace the main PCB.
- Surge protection: If your home experiences frequent surges, consider using a surge protector or having an electrician evaluate the supply.
- If E1 persists: The main PCB is likely defective and should be replaced with the correct LG Studio part.
Warning: Do not attempt to reprogram or modify the PCB firmware yourself.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Main Control Board (PCB)
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements