The most common cause is the diaphragm not being fully seated.
Check assembly step 3: Fit the diaphragm into the contoured position at the container back, ensure the diaphragm rim is fully sealed along the groove edge, and press the diaphragm lid firmly to ensure a secure seal.
Then re-do step 4: Align the peg on the pump hub with the hole in the diaphragm, and press the assembled container onto the hub until it clicks.
Note: You can see the alignment marks above the container back if securely assembled.
If you have any other questions, please don't hesitate to contact eufy Support Engineers for further assistance.


















