Quick answer: A Vertuo Next cup that has become consistently too short or long for one capsule type may have a stored custom volume. Nespresso’s manual says holding the button during a brew programs that capsule type for future drinks. Compare the same capsule type first. A factory reset restores all reprogrammed volumes, so use it only if you want to discard every custom cup setting.
First isolate the pattern
Compare like with like: Espresso, Double Espresso, Gran Lungo and Mug are different capsule types, and their standard output differs. Use two fresh capsules of the same type, a correctly seated tank and a measuring cup if useful. If only one type is consistently different but the machine completes each brew normally, a stored volume is plausible. If all types sputter or deliver unpredictable short cups, use the Vertuo Next water-flow guide before changing settings. This is an inference from the pattern, not proof of a specific electronic fault.
Choose a correction
- Keep custom settings: To reprogram just one capsule type, insert a fresh capsule of that type, close and lock the head, then press and hold the button until the desired amount is reached. The manual says the new volume is stored for that type. Use a cup large enough to avoid overflow. Be mindful that holding the button rather than tapping it changes the saved volume.
- Restore all defaults: Open the head and let the used capsule eject. Close it with the handle left unlocked. With the machine on and steady, press the button five times within three seconds. The button should blink orange five times and return to steady white. This resets every reprogrammed volume, not just one.
- Retest: Brew a fresh capsule of the same type with a normal single button press. If volume remains irregular or the machine flashes an error, identify the light pattern and contact Nespresso if needed.
Safety and FAQ
Do not open the head during a brew or touch hot liquid. If you need to run the descale program, follow its separate sequence; a volume reset does not remove scale.
Can I reset only Espresso to the factory amount?
The linked manual gives a whole-machine factory reset for programmed volumes. You can instead reprogram a single capsule type to an amount you choose.
Does a short brew always mean a saved setting?
No. Irregular flow, tank issues, scale and machine alerts belong in the flow diagnostic branch.
Source
Nespresso Vertuo Next user manual, “Programming the water volume” and “Reset to factory settings.”