2. If E90 persists, check and ensure there is no debris inside the spa tub inlet and outlet grids. If there is debris inside, unscrew the spa inlet/outlet grid with a Phillip screwdriver. Clean and replace it back. 3. Make sure the spa water is clean and sanitized. Contact your local. If E90 code is displayed on the control panel, it means no water is flowing through the system. Please check that your filter cartridges are clean and proper.
Navigate the Intex PureSpa E90 error code with our step-by-step troubleshooting guide, preventive tips, and maintenance insights.. If the E90 code appears instantly with the filter assembly removed: It is likely to be an issue with the filter motor - you can buy replacement motors or claim a free replacement under warranty via our Spare Parts Shop. If there is no water flowing after removing the filter cartridge assembly