LG air conditioner e1 error code

If there is E1 on the display, the pump filter in your washer is jammed. This happens when a foreign object gets into it. Take the machine to a safe and convenient place and disassemble it. Then remove the pump, pour hot water into the soap draw and make sure the water is coming out from the bottom and washing away debris. Disassemble the pump, clean and dry all the components, then put it back together. If this does not work, call a professional technician and have the pump replaced.