Question about Miele Coffee Makers & Espresso Machines
First, I'm not a Miele tech. I recommend contacting your vendor or the MFR for support. Check your warranty.
*** the following is for information only ***
* I've worked on table top "Super Automatic" brewers and not a fan of these small units. Similar to the larger Supers, these are the home/office style units. But all have the same problems as the larger professional units. They all require daily maintenance to be performed in order to maintain it. The reason is that these Super Automatics try to replace a Barista. It takes time, training, and lots of practice to become a good Barista. But now with a touch of a button, this 'Robotic machine' will make your favorite Latte for you. But you must keep this robot clean and serviced in order to keep producing coffee (especially milk products like Latte's)
* If you haven't opened up the machine, here is a link;
* following this link will also get related vids that may take you to the section your looking for. Be aware that the most likely cause of a problem is coffee grounds, water spills, and old milk getting in the wrong place and needs to be removed to function correctly.
* There are 2 basic systems in the machine for the water portion: Main heater for coffee brewing and steamer heater for the steam wand.
* Whole bean system has; Hopper, Grinder, Volume doser and/or timer.
* Group system compresses the coffee, doses a volume of hot water, then disposes the dregs or 'puck' This is usually a mechanical system with motor and gears.
* There may be an additional steam heater system if there is a Coco/hot chocolate option.
* All Heater systems have a pump (usually vibration), Heater, Thermostat(disk), Thermo fuse.
* Super Automatics always have a digital component to them. Many have options that require not only the correct PC board but also the correct PROM installed (internal programing). Most MFR's will only provide the block diagram of a unit with only a layout of where the cables attach to the PC board.
* Table units have many more sensors than their larger brothers which only check on water temps and how many pucks in the dregs drawer. Table units check the bean level, ground coffee, water level, water temps, group compression(by position), dregs level, panel doors, drip tray present, milk temp(an option), and others that may be on the CPU board as a time out or current usage. Some sensors are physical like a temp probe or a simple micro switch which are easy to find and locate by following the wires. The PC board is another mater. I suspect the MFR has a plug in unit that tests all the functions. I've used another 'good working' unit to swap test the PC boards and plug in parts. But found that PC boards have PROMs that differ from date of MFR and version. So a board may work in one version but not in another.
* Check out the you tube vids as many have come across the common problems. You will note that most are related to cleaning (or the absence) the machine. The other problem is "Opps" and walking away. People will pour stuff into the machine thinking "I thought that's where the milk goes?" or "I wanted a coco, not coffee."
* Air bubbles in the water line(s) from not re-filling the water tank. May require removing the water hose to the pump or detaching the pump from the heater to allow water to flush out the air. Restarting the machine several times may push out the air.
* Final, call vendor for help and service (if available). When I worked on these machines., these units had been swapped out by the seller whom replaced them with newer units to satisfy the customer (Hotel). The seller asked an espresso service company (us) to take a look at them figuring it's cheaper than sending them back to the mainland USA (I'm in Hawaii). So your getting the idea how hard it is to service these units.
* Once operational. Follow the daily maintenance. (and keep a look out for "Opps" people.
Posted on Feb 14, 2018
a 6ya Repairman can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Repairman (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
SOURCE: Miele CVA 4075 brew unit locked
Turn your machine off. Close the door. Depress <clear>, holding it down, press <on/off> then let go of both. Then press <clear> 3 times. On 3rd time, hold it until Service menu appears. Select <brew unit> then press left arrow to turn from <off> to <on>. Then press right arrow by <select> This will turn your brew unit drive to the correct position and you should be able to get your brew unit in/out and your waste container back in. Make sure to turn your machine off/on again to get out of Service Menu. I have a picture of how the wire needs to be inserted to get that back on. It's definitely not intuitive, but send another note with your email address and I can send the pics.
Posted on Jun 03, 2010
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