Replace Siemens EQ 5 ceramic valve - iFixit Repair Guide

Introduction

On these machines, the ceramic valve controls the entire flow of liquid. If it no longer works properly, various errors can occur: no coffee, no steam, no hot water... You can remove the valve and replace it, or try cleaning and descaling it first.

What you need

Step 1 Remove Siemens EQ Series side panel (tank side).

Replace Siemens EQ 5 ceramic valve, Remove Siemens EQ Series side panel (tank side).: step 1, image 1 of 1

Never forget: pull out the mains plug!
Remove all attachments such as water tank, pulp drawer, brew group.
Remove the coffee container lid and take out all the coffee beans.

Step 2

Replace Siemens EQ 5 ceramic valve: step 2, image 1 of 1

Unscrew the two Torx T10 screws at the top of the right side panel.
Some models do not have these screws. Then the side parts are only held by catches, some of which clamp very strongly. You may have to detach the back part first.

Step 3

Replace Siemens EQ 5 ceramic valve: step 3, image 1 of 3

Replace Siemens EQ 5 ceramic valve: step 3, image 2 of 3

Replace Siemens EQ 5 ceramic valve: step 3, image 3 of 3

Lay the machine on its side with the water tank side facing up.
The side panel is essentially held on the ground by five strong catches. Pry up the pegs with a strong prying tool. It's pretty difficult and you need a lot of strength.
If the catches are loose, you can pull the side panel away from below. But it's still stuck in other places.
Use a plastic tool to pry the top cover up a few millimeters and lift off the side panel. Most of the time it's still stuck, especially at the front edge, you have to pull hard.

Step 4

Replace Siemens EQ 5 ceramic valve: step 4, image 1 of 1

You may need to pry the front edge with a plastic tool.
Lift the side panel off, but don't remove it completely yet. It is still connected with a silicone tube.
The water tank lid is located at the top of the side panel. Lift it up off the hinges.

Step 5

Replace Siemens EQ 5 ceramic valve: step 5, image 1 of 1

Pull off the silicone hose that leads to the water connection of the tank from the inside.

Step 6

Replace Siemens EQ 5 ceramic valve: step 6, image 1 of 2

Replace Siemens EQ 5 ceramic valve: step 6, image 2 of 2

Remove the cover over the electronics.
The second picture shows the most important components:
heater
Ceramic valve/Brew valve (depending on model)
electronics
pump
mute
flow meter

Step 7 EQ 5 ceramic valve

Replace Siemens EQ 5 ceramic valve, EQ 5 ceramic valve: step 7, image 1 of 3

Replace Siemens EQ 5 ceramic valve, EQ 5 ceramic valve: step 7, image 2 of 3

Replace Siemens EQ 5 ceramic valve, EQ 5 ceramic valve: step 7, image 3 of 3

If you haven't already done so: Remove the two plastic covers over the cables and the electronics box.

Step 8

Replace Siemens EQ 5 ceramic valve: step 8, image 1 of 3

Replace Siemens EQ 5 ceramic valve: step 8, image 2 of 3

Replace Siemens EQ 5 ceramic valve: step 8, image 3 of 3

Locate the two strands of wire going from the ceramic valve to the motherboard. Unplug the connectors and unthread the cables.

Step 9

Replace Siemens EQ 5 ceramic valve: step 9, image 1 of 1

Turn the machine over. Remove the three Torx T15 screws securing the ceramic valve. Pay attention to the washers.

Step 10

Replace Siemens EQ 5 ceramic valve: step 10, image 1 of 1

Turn the machine over again.
Pull out the clamp on the pressure hose to the ceramic valve.
Pull off the pressure hose and push it aside.

Step 11

Replace Siemens EQ 5 ceramic valve: step 11, image 1 of 2

Replace Siemens EQ 5 ceramic valve: step 11, image 2 of 2

Carefully pull out the valve.
Pull off the thick and thin silicone hoses.

Step 12

Replace Siemens EQ 5 ceramic valve: step 12, image 1 of 2

Replace Siemens EQ 5 ceramic valve: step 12, image 2 of 2

Pull off the clamps on the other two pressure hoses. Make a note of which hose goes where and detach the two hoses.

Step 13

Replace Siemens EQ 5 ceramic valve: step 13, image 1 of 1

Remove the ceramic valve.

Conclusion

Follow the steps in reverse order to reassemble your device.

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