Decent Espresso

How to replace the DE1 pressure sensor



How to Replace the DE1 pressure sensor


This video is part of a series that we produce, helping people self-repair their Decent Espresso Machine.

In this video, we'll walk you through the entire process of replacing a pressure sensor. You'll need to do this if the sensor has failed and is now broken.

The sensor usually only breaks if there's a leak around the sealing o-ring, though it can (rarely) sometimes fail on its own.

#repair #diy #pressuresensor #howto #pressure

Tools Needed:

  • T10 Torx screwdriver
  • PH2 Philips screwdriver (if applicable)
  • T20 Torx screwdriver or 2.5mm/3mm hex key (depending on screw type)
  • Pointy tweezers

Step 1: Power Disconnection

For XL or XXL Models:

  1. Remove the back panel.
  2. Turn off the machine's back switch.
  3. Unplug the power cord.

For Pro and Plus Models:

  1. Turn off the machine's back switch.
  2. Unplug the power cord.

For Version 1.43 or Higher (Slide-Type Tablet Stand):

  1. Unplug the USB cable.
  2. Gently pull the tablet stand out.

For Version 1.3 to 1.42 (Screw-Type Tablet Stand):

  1. Unscrew the three screws holding the tablet stand.
  2. Remove the stand.

Step 2: Prepare the Machine

  1. Remove the drip tray and drip tray cover.
  2. Lift the lever on the back of the machine and drag out the water tank.
  3. Remove the portafilter and group head handle.

Step 3: Remove the Main Cover

  1. Use a T10 Torx screwdriver to remove the 8 screws on the main cover.
  2. Gently stretch the sides of the cover and lift it off the machine.

Step 4: Remove the Chassis & Manifold

  1. Check the screw type on the chassis:
    • If Torx T10 screws, use a T10 screwdriver.
    • If Philips screws, use a PH2 screwdriver.
  2. Remove the six screws securing the chassis.

Step 5: Remove the Main Manifold Screws

  1. Check the screw type:
    • If Torx screws, use a T20 Torx screwdriver.
    • If hex screws, use a 2.5mm or 3mm hex key.
  2. Remove the three screws first.
  3. For the last screw, hold the bracket under the sensor to prevent it from falling.

Step 6: Disconnect the Pressure Sensor

  1. Unplug the brown temperature sensor cable first for better access.
    • Use your fingernails to grip the connector sides and gently wiggle it out.
  2. Remove the pressure sensor cable:
    • Lift the top part slightly with a fingernail.
    • Use pointy tweezers at the bottom to gently pull it out.

Step 7: Remove the Old Sensor

  1. Pull the bracket from underneath the sensor.
  2. Carefully lift the sensor out by its cable.
    • Note: There's an O-ring on top (it will be replaced, so no need to reuse).

Step 8: Optional – Remove the Purple Tube for Easier Installation

  1. Remove the clip on the purple tube connector.
  2. Pull the tube out.
    • Note: There's an O-ring inside the connector—be gentle to avoid damage.

Step 9: Install the New Sensor

  1. Insert the new sensor into the mount, ensuring the O-ring stays in place (on top).
  2. Thread the cable through the bracket hole.
  3. Hold the bracket under the sensor while screwing in the first screw.
  4. Install the remaining three screws to secure fully.

Step 10: Reconnect Cables & Components

  1. Pressure sensor cable:
    • Align the exposed side with the open side of the Molex connector.
    • Gently push in (avoid excessive force to prevent damage).
  2. Brown temperature sensor:
    • The protruded part should face the open side of the board connector.
    • Slide in until you hear/feel a click.
  3. Purple tube (if removed):
    • Carefully push the tube back with a gentle circular motion.
    • Once the brass part disappears, it's fully inserted.
    • Reinsert the clip to secure.

Final Steps

  1. Reassemble all removed parts in reverse order.
  2. Reconnect power and test the machine.

For any questions, feel free to reach out. Thank you!

#documentation #repair #DIY #howto


  • Chinese (simplified): 如何更换DE1压力传感器
  • Korean: DE1 압력센서 교체 방법
  • German: So ersetzen Sie den Drucksensor Ihrer DE1
  • French: Comment remplacer le capteur de pression DE1
  • Spanish: Cómo sustituir el sensor de presión DE1

    Updated 2025/04/23