CoOptVal 20-Bar Professional Espresso Machine – Ultimate Customizable Brewing Whether you're a coffee enthusiast or not, CoOptVal can fulfill all your coffee fantasies What Dose CoOptVal All-in-Oine Coffee Maker Bring? Pain Point Addressed by CoOptVal: Providing coffee enthusiasts with a solution that allows complete customization of extraction parameters, empowering users to craft their perfect cup with precision and personalization. Customizable Coffee, Compatible Flavor – Tailored to Every Taste. When a fully customizable coffee machine meets top-quality coffee, are you ready？ Starting With CoOptVal For Optimal Coffee Extraction How do you measure the quality of a coffee machine? Endless Innovation, Perfecting Every Cup – CoOptVal Elevates Your Coffee Experience. Sleek, Compact, and User-Friendly Design for Effortless Brewing. Common Issues and Solutions 1. Why is my coffee machine not dispensing water? If your coffee machine isn’t dispensing water, it might be due to insufficient water in the tank, triggering the anti-dry protection mechanism. To fix this, follow these steps: Ensure the water tank is adequately filled before using the machine.Make sure the machine is in coffee mode (non-steam mode), then turn the knob to switch to hot water mode.Allow water to flow from the steam wand for a few seconds, then turn the knob to stop the hot water function.This process should restore the coffee extraction functionality. 2.Resolve the E-2 Error on the Monitor Gauge？ The "E-2" error means the machine has triggered overheating protection and is in overheating protection mode. Release hot water through the steam wand for 5–10 seconds to help cool the machine faster. For common issues, please carefully browse the User Manual.pdf available on the listing. Alternatively, you can send a message through the Q&A section or contact directly to us, and we will ensure your issue is resolved within 24 hours. CoOptVal Espresso Machine Disassembly Diagram What is CoOptVal's after-sales support? Important Considerations to Ensure Your Satisfaction？ We provide a 60-day exchange policy along with a 1-year protection plan and lifetime technology support on all products. We will strive to find the best solution for you. Committed to long-termism, we stand by every CoOptVal customer, growing together with you. CoOptVal adheres to the principle of "customer first," gaining trust through excellent after-sales service. The trust and support of our customers are the driving forces behind our continuous improvement and value delivery. To help you make an informed decision and ensure a delightful experience with our coffee machine, here are a few key factors to consider: 1. Cup Size Limitation: Our machine supports a range of cup sizes depending on the portafilter used. Universal Accommodation: Fits espresso cups up to 2.8 inches (7 cm) in height.It is recommended that customers use a 8 oz espresso cup for the best experience.Please check the height of your preferred cups to ensure they fit comfortably under the machine. 2.More Effective After-Sales Service: We appreciate genuine feedback. Leaving only a rating without content may not allow us to confirm your purchase, identify the issue, or provide an effective solution. It could also cause confusion for other customers. Your detailed review and feedback will help us improve the product and deliver better after-sales support. We hope these insights help you make the best choice for your coffee needs. Should you have any questions or need further assistance, our dedicated customer support team is here to ensure you have a wonderful coffee experience.