If your Breville Bambino Plus is not building pressure during extraction, it can result in weak, watery coffee. This issue often stems from blockages, scale buildup, or pressure system malfunctions. Fortunately, with careful troubleshooting, you can restore proper pressure and enjoy cafe-quality espresso at home.
In this guide, we’ll walk you through a step-by-step process to identify and fix common pressure-related problems safely and effectively.
Key Takeaways
| Check for blockages | Clear the portafilter and shower screen of coffee grounds or clogs. |
| Clean the machine | Regular descaling prevents scale buildup that impairs pressure. |
| Inspect the pressure release valve | Ensure it is functioning properly and not stuck open. |
| Verify water flow | Ensure water reservoir is full and the water intake is unobstructed. |

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Step 1: Turn Off and Unplug the Machine
Before starting any repairs, turn off the espresso machine and unplug it from the power source to ensure safety during troubleshooting.

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Step 2: Remove and Clean the Portafilter and Shower Screen
- Remove the portafilter and inspect for coffee grounds or blockages.
- Clean the portafilter and shower screen thoroughly with warm water and a brush.
- Reassemble once clean.
Step 3: Check and Clean the Water Reservoir and Filters
- Ensure the water reservoir is filled and seated correctly.
- Remove the water filter (if installed) and clean or replace it to prevent flow restrictions.
- Use a descaling solution periodically to remove mineral buildup.
Step 4: Test and Inspect the Pressure Release Valve
Locate the pressure release valve—usually near the group head or pressure gauge. Ensure it is not stuck open or closed. If stuck, gently clean or replace it following the manufacturer’s instructions.
Step 5: Descale the Machine
Use a descaling tablet or solution designed for Breville machines, such as the Breville BEC250 cleaning tablets, to remove scale buildup that can prevent proper pressure. Follow the descaling process outlined in your user manual.
The Products in This Guide

Breville Bambino Plus
- ✔ Weight: 13.2 lbs
- ✔ Dimensions: 13.2 x 7.7 x 12.6 inches
- ✔ Power: 1600W

Breville BEC250 Espresso Machine Cleaning Tablets
- ✔ Quantity: 8 tablets
- ✔ Ingredients: Food-grade
- ✔ Application: Cleaning shower screens, filter baskets
Breville Bambino Plus

The Breville Bambino Plus is a compact, feature-rich espresso machine that delivers professional-quality coffee at home. Regular maintenance and troubleshooting can extend its lifespan and ensure consistent pressure during extraction.
Pros:
- Fast heat-up with ThermoJet
- Consistent pressure control
- Easy to clean components
- Compact footprint
Cons:
- Requires regular descaling
- Pressure issues may need technical attention
Best for: Home baristas seeking quick, quality espresso
Not ideal for: If you frequently experience pressure drops, professional servicing might be needed.
Bottom line: Regular cleaning and maintenance are key to preventing pressure issues in your Breville Bambino Plus.
Breville BEC250 Espresso Machine Cleaning Tablets

Using Breville BEC250 cleaning tablets regularly helps remove coffee oils and residues, which can cause pressure issues. A clean machine performs better and lasts longer.
Pros:
- Effective at removing oils
- Safe and pharmaceutical grade
- Easy to use
- Extends machine life
Cons:
- Requires consistent usage
- Additional cleaning steps needed
Best for: Maintaining espresso machine performance
Not ideal for: If you prefer DIY descaling solutions, this might be less flexible.
Bottom line: Regular cleaning with Breville tablets ensures your machine maintains optimal pressure and flavor.
Frequently Asked Questions
Why does my Breville Bambino Plus lose pressure during extraction?
Loss of pressure can be caused by blockages in the portafilter or shower screen, scale buildup, or issues with the pressure release valve. Regular cleaning and descaling help prevent these problems.
How often should I descale my Breville Bambino Plus?
It is recommended to descale every 2-3 months, or more frequently if you have hard water, to maintain optimal pressure and performance.
Can I fix pressure issues myself or do I need professional help?
Most common pressure problems can be fixed with cleaning, descaling, and inspecting key components. However, if these steps do not resolve the issue, professional servicing may be necessary.
What should I do if the pressure release valve is stuck?
Gently clean the valve with a soft brush and warm water. If it remains stuck, consider replacing it following the instructions in your user manual or consulting a technician.
Getting Your Espresso Back on Track
By following these step-by-step troubleshooting tips, you can often resolve pressure issues with your Breville Bambino Plus and enjoy rich, balanced espresso every time. Regular maintenance, including cleaning and descaling, is essential to keep your machine performing at its best. If problems persist, seeking professional help ensures your machine stays in top condition for years of brewing excellence.
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