Brew unit blocked message The brew unit removed and switches jumped, motor turns message still blocked brew unit . what could it be and ways to tests.

Hi
Sorry to tell you but Brew Unit Block is usually the CPU or the main board going bad. It is usually caused by a constant drag on the brew unit causing more power going to the drive motor causing the CPU and the main board to heat up weaking the CPU or main board to the failure point. To much coffee going into the brw unit and causing the brew drive motor to work harder to compress the coffee will also do the same. You will have to replace the CPU or the main board. It is usually the CPU.

The brew unit has lose parts on left-hand-side, wiggle them up and down. Put the waste unit back, switch off the machine and then turn it on (pull the cord). It worked for me!!!

First clean the screen and tube on the brew unit, then lube the guides/gear grooves on the brew unit, also lube the o-ring(big red one). Then that should take care of it. You can also try backwashing/degreasing the brew unit if the machine has a preground chute.

Manual on http://www.partsguru.com/user/Saeco%20%20Manual%20MagicComfortPlus.pdf

After replacing the filter in the tank, keep the button pressed; when the indicator light is flashing, then release the button.

Also at times, the gears in the brew drive assembly will not complete the cycle to the proper start position for different reasons. Some of the reasons are:

1. Brew group jammed or blocked.
   Note: A jammed or blocked brew group can happen when the brew group starts the cycle but doesn’t finish it.
2. Either one of the micro-switches in the brew drive has gone bad.
3. Brew drive motor failure.
4. Broken teeth on either of the brew drive gears.
5. Dirty brew group, covered by coffee grinds.
6. Brew group or gears not lubricated.
7. Connections to the board from brew drive assy., or motor have gone bad

Coffee fines and mineral scale build up in the brew unit filters and also in the creme valve. The pressure to pump water through the unit fails and the flowmeter tells the electronics that no water has flowed, it in turn stops all processes and displays "brew unit blocked" message. If you're handy, call Miele tech support. The'll walk you through how to remove the drainage cup screw off the left rear of the brew unit, get the brew unit out and return the gearing to home position. It's a 50/50 chance the gears will return or you will need a service tech to pull your coffee unit out and re-sync the gears to the electronics. That's of course if they didn't break.
This blockage is is prevented only by using the cleaning tablets and descaling tablets. Both need to be used as outlined in the instruction manual.

Check the shower screen on the brew unit.

It is possible that the problem is in the CPU board, check the board, and the capacitor next to the pump.

You have got the gears out of alignment. You don't really want to take out brew group unless at end of cycle. You can fool machine to get brew group back in.
Here is how :

BREW GROUP REMOVAL AND DRIVE GEARS ADJUSTMENT
FOR AUTOMATIC MACHINES
If you ever find yourself in need of removing a Brew Group that has jammed. This will assist you in doing so correctly.

To fix this problem follow these simple steps:
You will need a #1 Philips screwdriver

1.) First, open the door on the machine and remove the drip tray and dredge drawer

2.) Locate the nickel size hole in the brew group. It will have an "N" next to it. At the 9 o'clock position, you will see another hole about 1/3 of the size of the first. Directly behind this hole, or about an inch up depending on the position the machine was stopped in you will see a single philips head screw. You may have to look around the side of the brew group to locate the screw as it is not always visible from the smaller hole. Remove this screw; it holds a small coupling water inlet (it is similar looking to a tobacco pipe) to the brew group.

3.) Remove the brew group by pressing/pushing (depending on your machine) on the part that says “Press" or "Push”. Pull firmly and straight out. Be cautious to not break the brew unit. Also be aware of the door of your machine as it can break as well.

4.) With the brew group out, remove the small coupling water inlet (tobacco pipe) that is probably still stuck to your machine and reinstall it in the brew group as it was before. Make sure the screw is installed snugly but not too tight.

5.) Turn the brew group around so you are facing the back. Now imagine what a check mark looks like, the top we will call position A (longer part of the checkmark) and where the checkmark ends (the smaller portion) is point B. You will notice what looks like a large checkmark where the coupling water inlet is located. The water coupling can slide up and down in this checkmark opening. The water coupling should be in the B position.

REINSTALLING THE BREW GROUP
To do this, the gears will have to be reset to the start position. In order to do so, you will have to bypass the three micro-switches (Brew Group, Dump Box and the Door switch).
Bypassing the micro switches:

1.) Looking at the back-side of the brew group, not the side that says "Push" or "Press," you will notice something fin-like or nose shaped. This piece fits into a keyhole or coin slot looking slot in the machine and that is where the brew unit micro-switch is located. Take something like an index card, envelope, or folded up piece of paper, and insert it into that keyhole so that it will trick the machine into thinking that the brew unit is installed. Start the piece of paper at the top of the slot and slide it to the bottom of the slot. The paper should be thick enough so you can let go and it will remain in place. Leave this object in there until the following steps are complete.

2.) WITHOUT putting the brew group back into the machine, reinstall the drip-tray and dredge drawer and close the door.

3.) After doing so you can then turn the machine ON. At this time the gears will begin moving until they return to the correct start position. At this point remove the object from the keyhole position and you can now reinstall the brew group. If the brew group does not go back in correctly, try a few more times. The machine will return to its home position. Note: The two large spokes of The brew drive shaft should in the Up position

At times, the gears in the brew drive assembly will not complete the cycle to the proper
start position for different reasons. Some of the reasons are:
• Brew group jammed or blocked
• Either one of the micro switches in the brew drive have gone bad.
• Brew drive motor Failure.
• Broken teeth on either of the brew drive gears.
• Dirty brew group, covered by coffee grinds.
• Brew group or gears not lubricated.
• Connections to the board from brew drive assy., or motor have gone bad.
A jammed or blocked brew group happens when the brew group starts the cycle but doesn’t finish it.

There is a third solution. The brewunit drive motor has three contact switches that indicate home, preset (loading grounds, I assume) and make espresso. The problem is the three contact switches are all on one circuit, so the microprocessor knows a limit switch has been reached, but it doesn't know which one. The programming obviously assumes the limit switches are reached in the correct sequence. In my case, the microprocessor thought the brew unit was in home position when it was in the make espresso position. Miele technical support recognized this immediately, so it is a common problem. The solution is to remove the top panel of the unit, unplug the unit, unplug JP34 on the microprocessor board (four wires, red/yellow/brown/black, in the middle back edge of the microprocessor board). Plug in the unit, put it in maintenance mode, and press and hold the medium coffee button for several seconds. This will move the drive motor past the current limit switch. Plug JP34 back in, plug in the machine, and put it in maintenance mode. Press and hold the large coffee button for a second or two, maximum. Open the machine, and look at the brew unit drive male gear in the main machine as compared to the brew unit female gear. It will take several tries to get the male/female gears to match so you can plug in the brew unit. Once this is done, and the brew unit snaps in place correctly, place the machine in maintenance mode one more time and press and hold the Medium Coffee button to reset the microprocessor with the limit switches. You should be back in business!