Take a sample of the teflon micro pipe tubing to your local plumbing store and ask them to match.
The larger clear tubing is a type of surgical rubber, try a local model shop.
Either way the piping must be suitable for food use (don't use car parts gas hose!).
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When you start the cleaning cycle, Don't stop the process by pulling the plug! Turnthe unit off from inside wait 5+ seconds & turn back on and thecleaning cycle should restart... If you do not use a cleaning TAB..Open& shut the LOOSE coffee Door under the drawer (Top Left) and thecycle will continue.
Wow, I used a shop vac as someone else had posted. I realised that there are actually two valves where the water tank rests so I vaccuumed from the valve closest to me and a lot of water was sifoned out. Then my CVA620 coffee maker reset itself. Make sure you go through the coffee making process as the first coffee was not up to standard.
keep holding the hot water button down until you get a steady stream of water with no air. if you continue to get the error message after the water comes out, you will need to check the flow meter. if water never comes out, you have a leak inside the machine, a pump issue, or a blockage in the water path. That machine uses the same pump for steam and hot water, so if your steam is working, your pump is probably good. Blockages usually occur from not descaling properly. That machine is prone to leak at the hose fittings. the original o rings were black rubber, and failed fairly early. the replacements are red silicone and last much longer.
check to see if your steam nozzle is clear unscrew tip and clean also run descaler thru to make sure steam tank is clear if still not ok steam tank thermostat may be faulty need to service machine hope this helps
I'm probably to late for this answer, but I will share it anyway.
I got this problem after buying a used CVA620, that had not been used for a while.
To solve the problem i used a breast pump :-)
My wife had this doublepump after the last kid. And I used the hoses that comes with this unit (rubber-like) and connecting them to the hot-water and the steam-nozzles. I started pumping, and pushed the hotwaterbutton. After 5min of pumping and swearing, the job was done. No my CVA works as a charm again :-)
Remove the Brew Unit from the maschine and clean it very well und running water. Thn go into the Main menu and switch back all settings to factory defaults. Then take a vaccum cleaner and put the pipe in the small hole where the coffe falls into the brew unit (knock a bit on the maschin inside). Put out the bean container and do the same with the hole where the beans go into the grinder. Then put everything back in and start a cleaning process for the brew unit (do it 2 times). After that your Problems must be gone. The Problem is between the grinder and the brew unit. the grinded coffee has bee stuck and is not falling into the brew unit .... that happens when you use beans with lots of oil inside .... or coated beans .... they "glue" the chute .....
the best thing to do open the machine cover go easy when the cover is off visual look you probably got a disconnect pipe if not activate the machine be carefull you got live power in there try to make a coffee you a clear pipe black hose connect to it probably dry rubber hose if its that put everything back and clean the machine with a decalcifier block pipe with calcium buil up pressure inside if you have a dry hose its gonna pop off dont forget to rinse the machine very good after that stuff is very corosif if it help you dont forget to rate this cheers