20 Most Recent DeLonghi ECO 310.BK Pump Espresso Maker Appliances Cookware - Black Questions & Answers

O rings do deteriorate over time but see my other answer as it is possible it just needs de-scaling.

DeLonghi ECO... | Answered on Aug 26, 2015

Could need de-scaling. Scale builds up after time and reduces flow rates, increasing pressure leading to leaks. Give it a go with any generic de-scaling powder or liquid following the instructions. My coffee machine (different model) did similar and now works like new again.

DeLonghi ECO... | Answered on Aug 26, 2015

If you have a self fill cup you can, use that empty, and run CLR or vinegar through it, then several pure water through it.
Also there is this video.

DeLonghi Coffee... | Answered on Jul 14, 2019

I have the same problem. I think it's a factory defect. The descale button doesn't work, and it's never been descaled. I just leave vinegar in the machine overnight and run water to rinse it the next day. Vinegar is just dilute acetic acid. Citric acid works better than vinegar, but it's harder to find. It doesn't have the smell that vinegar does.

DeLonghi Coffee... | Answered on Jun 16, 2019

you probably have a problem with the flowmeter (one circular white, one hose from the tank enters the pump). You must remove the back cover of the machine and see them at the bottom left.
allow it to be opened by spraying and cleaning it.
Good luck

DeLonghi Coffee... | Answered on Jun 15, 2019

Not clear if loss of steam to milk dispenser or milk dispenser itself clogged.

Try descaling again. Try running the vinegar through tbe machine about 1/2. Then stop tbe machine and allow additional time for the vinegar to work.

Also run a clean cycle using vinegar.

Also try disassembling the milk dispenser and clean manually.

DeLonghi Coffee... | Answered on Jun 05, 2019

to me the pipe is blocked there is a tool to use to clean this pipe out, hard deposits in the water can block the steam pipe and the tool is a thin bendy wire that you put up the pipe to clean the pipe line out. i would think they sell this pipe in most out lets for coffee makers. check for coffee steam pipe cleaner.

DeLonghi Coffee... | Answered on May 29, 2019

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