I have used the item once. The second time using the pressure cooker it became faulty showing the E4 error code. Which, in the instruction manual means the pressure cooker is not sealing properly. I have washed the parts needing to be washed and replaced all seals correctly as per instructions. However, the E4 code still shows everytime the unit is switched on. There are other customers expressing the same issues. It seems to be a manufacturing fault.