If your Breville Bambino Plus is brewing without pressure or producing weak espresso, it can be frustrating. This guide helps you identify and resolve common causes of low or no pressure, ensuring your machine performs at its best. Follow these safe, detailed steps for effective troubleshooting.
Key Takeaways
| Check water filters | Clogged filters can cause pressure issues. |
| Clean the group head | Coffee oils and residues block pressure buildup. |
| Inspect the portafilter | Damaged or improperly fitted portafilters can affect pressure. |
| Examine the pump | A faulty pump may need replacement. |
| Ensure proper grind size | Too coarse grind can prevent proper pressure. |

Breville Bambino Plus, Black Stainless Steel
The Breville Bambino Plus delivers third wave specialty coffee at home using the 4 keys formula and is...
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Step 1: Turn Off and Unplug the Machine
Before starting any troubleshooting, ensure the espresso machine is turned off and unplugged from the power outlet for safety.

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Step 2: Check and Replace Water Filters
- Remove the water reservoir from your Breville Bambino Plus.
- Inspect the charcoal filters (if present). If they are old or clogged, replace them with new ones like the Breville Charcoal Filters (asin=B000VX44OO) or Possiave Water Filters (asin=B089R7ZRBG).
- Reinstall the reservoir and run water through the machine without coffee to flush the system.
Step 3: Clean the Group Head and Portafilter
- Remove the portafilter and clean the filter basket thoroughly to remove coffee oils and residues.
- Use a cleaning tablet like Breville BEC250 (asin=B00494MU9M) to descale and clean the shower screen and internal parts.
- Ensure the portafilter fits snugly and that there are no cracks or damage.
Step 4: Check the Pump and Seal
If cleaning doesn’t restore pressure, inspect the pump. Listen for unusual noises or lack of sound during operation. If suspect, contact a technician for testing or replacement. Also, inspect the portafilter gasket for wear and replace if necessary.
Step 5: Adjust Grind Size and Dose
Ensure your coffee grind is fine enough for espresso. Too coarse grind prevents proper pressure buildup. Use a consistent dose—around 19 grams for the Bambino Plus—and tamp evenly. This ensures optimal extraction and pressure formation.
The Products in This Guide

Breville Bambino Plus
- ✔ Power: 1600W
- ✔ Heating System: ThermoJet
- ✔ Milk Frother: Automatic steam wand

Breville BEC250 Espresso Machine Cleaning Tablets
- ✔ Usage Frequency: Every 2-4 weeks
- ✔ Compatibility: All Breville models
- ✔ Safety: Food-grade ingredients
Breville Bambino Plus

The Breville Bambino Plus is a compact, high-performance espresso machine that delivers professional-quality coffee at home. Proper maintenance and troubleshooting can keep it operating smoothly.
Pros:
- Fast heat-up with ThermoJet
- Precise dose control
- Great for small kitchens
- Consistent extraction
Cons:
- Requires regular cleaning
- Pump noise can be noticeable
- Filter replacement needed over time
Best for: Home baristas seeking quick, quality espresso
Not ideal for: Heavy daily use without maintenance
Bottom line: A reliable espresso machine that benefits from regular cleaning and proper use.
Breville BEC250 Espresso Machine Cleaning Tablets

Using Breville’s official cleaning tablets ensures your espresso machine stays free of coffee oils and residues, maintaining optimal pressure and flavor.
Pros:
- Effective oil removal
- Prolongs machine lifespan
- Safe ingredients
- Easy to use
Cons:
- Requires regular use
- Additional cost for tablets
- Must follow dissolution timing
Best for: Maintaining peak machine performance
Not ideal for: Neglecting routine cleaning
Bottom line: A simple step to extend your espresso machine’s life and maintain pressure.
Frequently Asked Questions
Why is my Breville Bambino Plus not building pressure?
Common causes include clogged filters, residue buildup, pump issues, or improper grind size. Follow troubleshooting steps to diagnose and fix the problem.
How often should I descale or clean my machine?
Regular cleaning with tablets like Breville BEC250 every 2-4 weeks helps prevent pressure issues and keeps your machine functioning optimally.
Can I use any water filter for my Breville espresso machine?
It’s best to use official Breville charcoal filters or compatible water filters like the Possiave 12-Pack to ensure water purity and machine longevity.
Is it safe to open the machine myself?
Only perform basic cleaning and filter replacements. For internal repairs or pump issues, consult a professional technician to avoid voiding warranties or causing damage.
Keep Your Espresso Perfectly Pressurized
Regular maintenance, proper cleaning, and correct grind size are key to resolving pressure issues in your Breville Bambino Plus. By following this step-by-step guide, you can ensure your espresso machine continues to deliver cafe-quality coffee at home. When in doubt, professional servicing is recommended to keep your machine in prime condition.
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