Question about Miele CVA4070 Coffee Maker
Coffee flow is blocked on one of the 2 dispenser tubes
Posted by Anonymous on
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Posted on Jan 02, 2017
It sounds like the connector or wiring that links the LCD display board on the door to the main PCB inside the coffe maker has become loose or damaged.
This would cause the text displayed to become scrambled.
Its a 26 way connector that is labelled JP16 (on the next model up) and is next to a large IC.
Posted on Jan 02, 2008
there is a liltle floating black thing at the back of the container, this works as a magnet switch. see if it is there or is stuck and doesnt raise with the water level.
Posted on May 05, 2009
Your dispenser spout needs to be removed and cleaned. It is getting coffee residue inside and the ports are getting smaller.
Posted on Nov 05, 2010
SOURCE: my miele cva 615 the
The oils in this mud cake dry up right after the water dries up (over night) and presto you have concrete! This concrete becomes too thick to clean, so cleaning with tablets has to increase dramatically if you increase the strength of the coffee. If you leave it strong clean it weekly.
Normally you clean the brew unit with cleaning tablets every time you finish descaling. That's about once every 200-250 coffees based on the water hardness you set in the electronics. If you notice changes in the coffee water flow speed it's usually from clogging.
If you're handy get your camera. Take pictures of every step you do. Remove the brew unit. Disassemble the left top section (2 screws holding the long pipe). It compresses a 1/2" long spring. It may get away from you so be ready for it. The spring attached to a half round plastic button (valve) that looks like a rivet. Clean all brown gunk from this valve and the housing and you're cr?me will return. While you're in the cleaning mode remove the filter and clean inside under the filter. The filter is that round stainless steel screen disc with the phillips head screw in the centre.
All this is evidence that cleaning needs to be stepped up, good luck!
Posted on Jul 24, 2011
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You need to advise the model .. but assuming its the CVA 40XX series ... the frist thing to check is the dispenser which has the two pipes comming out of the bottom. This can get coffee residue build up which usually causes 1 or both pipes to have reduced coffee flow. Indication that this is at fault are if the flow is uneven between the pipes or if coffee flows down the outside of dispenser. You can chck this pipework for blocages by openeing door and blowing air though the pipe extending on inside of door. The the dispenser is blocked you need to remove from rear of door and then clean out thoroughly in running water. If this pipework is not and
You need to advise the model .. but assuming its the CVA 40XX series ... here is what I would do;
1. First check is the coffee dispenser on front which has the two pipes coming out of the bottom. This can get coffee residue build up which usually causes one or both pipes to have reduced coffee flow. The indication that this is at fault is if the coffee flow is uneven between the pipes or if coffee flows down the outside of dispenser. You can also check the dispenser for blockages by opening door and blowing air though the pipe extending on inside of the door. The air should flow through easily. If the dispenser is blocked you need to remove from rear of door and then clean out thoroughly in running water.
2. Next check the pump and water path. The pump for the coffee is also used for producing hot water. So if the hot water is working normally then you can rule out the pump. If you not getting hot water then its likely to be the pump or a blockage in the flow through water heater.
3. If above OK then it's a fault with Brew Unit. Follow procedure to remove the brew unit, clean unit and test the air path through both pipes by blowing. Note: When you take out brew unit it not possible to access one of the pipes because its protected by a plastic shield. There is a manual procedure to manipulate the brew unit to expose this pipe so you can blow through it. However the likely cause is not a blockage in these two pipes but the stainless steel filter that the coffee must pass through. You will need an Allen key to remove the bolt holding this in place. Once removed you need to check all holes are free of blockage by inserting a very small wire in each hole. Alternately you can replace this part. If the filter is clogged then you should consider using a different type of coffee as some types coffees cause this problem and others do not.
I hope this helps. regards
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