An espresso machine is a sophisticated piece of equipment that features numerous electrical components and parts. Malfunctions can happen, but they're often easy to fix at home.
Espresso machine problems and fixes
The key is knowing what various troubleshooting issues mean, why they arise, and how to either prevent or solve them.
We'll cover some of the most common espresso machine problems, along with simple fixes you can perform on your own.
Why it's important to fix espresso machine problems
Keeping up with maintenance helps ensure your espresso machine continues to brew high-quality coffee while extending its lifespan. Part of this is cleaning your espresso machine regularly, washing and rinsing certain parts daily, and periodically descaling the unit. But another critical component of maintenance is addressing issues as they arise.
On the other hand, not staying on top of maintenance can result in inconsistent flavor, weak espresso machine pressure, or breakdowns. Troubleshooting will help prevent pricey repairs (or the cost of a replacement) and allow your machine to continue brewing café-quality shots.
Common espresso machine problems and how to fix them
The most common espresso machine problems include issues with coffee extraction, water pressure, heating, steam wand functionality, power supply, and control panel malfunctions. Let's discuss these in more detail and how to fix them.
Espresso flowing too fast or too slow
Espresso shots flowing too fast or too slow out of the portafilter is likely due to the wrong espresso grind size. If they're coming out too fast, try using a finer grind setting. If the flow is too slow, it may be that the grind is too fine or that the dose is too high (meaning you can use slightly less ground coffee).
Channeling or uneven extraction
Channeling is when the pressurized water flows quickly through weaker spots in the tamped coffee puck. This would resemble multiple thin streams of espresso flowing out of the portafilter, which can lead to uneven extraction and inconsistent taste. To avoid this, make sure the grounds are spread evenly in the portafilter using a distribution tool, tamp the espresso straight down (without any tilting), and don't tap it after tamping.
Stale coffee grounds
When your brewed espresso smells great but doesn't have the bold flavour of concentrated coffee, it could be because your beans aren’t fresh or you waited too long between grinding and brewing. Within just a few minutes of grinding, the beans release a substantial amount of their lipids and fats into the air through CO2, which creates the aroma of coffee while diminishing the taste. For best results, always grind your coffee right before brewing espresso, and clean the grinder chute regularly to make sure there aren't stale particles remaining.
Low or inconsistent pressure
An espresso maker with low or inconsistent water pressure could be a sign of scale buildup inside the reservoir or internal tubes. Try descaling your espresso machine based on the manufacturer's instructions with its recommended cleaning solution.
No water flow or weak flow
If no water is coming through the machine or there is a weakened flow, it may need to be descaled, as mentioned above. This can help remove blockages in the intake valve. Additionally, ensure that the water reservoir is filled and properly positioned on its dock. You can also try running a blackflush cycle.
Air in the water circuit
If there's air in the water circuit, you'll want to prime the circuit. First, fill the water reservoir to the maximum fill line and ensure it's placed correctly on its dock. Next, dispense hot water (as if you were using the machine to make tea). Continue dispensing hot water, filling multiple cups if necessary, until a consistent flow is achieved. You can also try repeatedly removing and replacing the water tank to try to "break" the air blockage.
Machine is not heating or the coffee is lukewarm
When an espresso machine isn't heating water properly or you're getting lukewarm shots, there's a good chance of mineral buildup in the reservoir or pump. Descaling can solve the problem. If not, it could be an issue with the thermostat or heating element, in which case you might need a replacement part for the pump or professional assistance.
Steam wand is clogged, or no steam
If the milk steamer wand isn't producing any steam or is making a loud noise and not working properly, it could be clogged. Inspect your coffee maker and see if the noise is coming from built-up milk residue or other debris. To prevent this, be sure to clean it after each use to remove milk residue.
To fix it, first place a wet cloth over the tip and open the valve to purge any existing milk and debris. Then wash the wand and tip thoroughly with hot water and a special cleaning tool, such as a steam wand needle or narrow brush. You can use a descaling solution or a mixture of distilled white vinegar and water.
Machine won't turn on
If your coffee machine won't turn on, check that it's plugged in. If so, try plugging it into a different outlet or test the outlet with another electronic device. You can also try turning the circuit breaker off and back on to reset it. If you're still experiencing issues, check if the power cord is damaged and ensure the water reservoir is seated properly.
It could be an issue with internal wiring or a fuse. In that case, get in touch with the manufacturer about having a technician repair the machine or replace a bad part.
Touchpad or buttons not responding
If the touchpad screen or buttons on your espresso machine aren't responding, try unplugging and replugging it into the outlet or turning it off and back on. If that doesn't work, contact the manufacturer for troubleshooting support or consider seeking a repair from an expert.
General maintenance tips for espresso machines
As noted, regular maintenance is the best way to avoid these problems and ensure your machine produces espresso shots with powerful flavor and thick crema.
Clean the portafilter, basket, grouphead, drip tray, and steam wand after each use. You should also descale your coffee machine every one to three months, depending on how often it's used. To prevent mineral buildup and optimize the flavor of your espresso, use filtered or reverse-osmosis water—with a moderate (but not too high) mineral content.
How Breville machines simplify espresso maintenance
Breville espresso machines are carefully crafted and engineered to last for years. The premium designs deliver top-quality espresso while simplifying cleaning and maintenance. Each system has built-in cleaning alerts and convenient descaling programs.
Our espresso makers are backed by two-year warranties. You can also visit the Support Hub for your model to register your machine, chat with support, find answers to FAQs, access detailed troubleshooting guidance, get repair help, file a warranty claim, and order replacement parts.
Breville has all the essentials for barista-level brewing at home. Explore burr coffee grinders and other coffee accessories for your espresso machine.
Sources:
1. CoffeeGeek. 6 Mistakes People Make With Their Espresso Machines. https://coffeegeek.com/blog/techniques/6-mistakes-people-make-with-their-espresso-machines/
2. Perfect Daily Grind. Do we need to rethink the relationship between grind size and coffee extraction?. https://perfectdailygrind.com/2022/12/the-relationship-between-grind-size-and-coffee-extraction/
3. Perfect Daily Grind. What is channeling and how does it affect espresso extraction?. https://perfectdailygrind.com/2022/03/what-is-channeling-espresso-extraction/
4. Engineering Failure Analysis. Anomalous corrosion phenomena observed on electrovalves of coffee espresso machines. https://www.sciencedirect.com/science/article/abs/pii/S1350630713002252
5. Matter. Systematically Improving Espresso: Insights from Mathematical Modeling and Experiment. https://www.sciencedirect.com/science/article/pii/S2590238519304102
6. American Society of Mechanical Engineers (ASME). How Espresso Machines Work: The Engineering Inside. https://www.asme.org/topics-resources/content/how-espresso-machines-work-the-engineering-inside
7. Sinkron. Design and Development of Coffee Machine Control System Using Fuzzy Logic. https://www.researchgate.net/publication/367231167_Design_and_Development_of_Coffee_Machine_Control_System_Using_Fuzzy_Logic
8. Perfect Daily Grind. Why equipment longevity needs to be a priority for coffee shops. https://perfectdailygrind.com/2025/01/why-equipment-longevity-is-a-priority-for-coffee-shops/
9. CoffeeGeek. Ten First Steps for a New Espresso Machine. https://coffeegeek.com/guides/feature-guides/10-essential-first-steps-new-espresso-machine-guide/
CoffeeGeek. Are You Screaming? Your Steam Wand Shouldn't Be Either. https://coffeegeek.com/blog/techniques/are-you-screaming-your-steam-wand-shouldnt-be-either/