Descaling can eliminate mildew, limescale deposits, and mineral buildup that can produce bad-tasting coffee. (BestReviews)

Jura is a luxury coffee and espresso machine maker known for its fully automatic systems. Based in Switzerland, Jura has been around since 1931 and a major player in the automatic coffee machine market since the 1980s. Its machines are sleek and provide push-button and touch-screen access to delicious espresso drinks.

Jura's at-home machines range in price from the more affordable A1 at around $800 to the super premium Giga 6, which goes for close to $6,000. Jura has a solid reputation. However, even luxury machines have problems. The following are the most common problems associated with Jura coffee machines.

The reason most people purchase a Jura is because they can create barista-quality espresso drinks without having to manually work with a frothing wand. Without a functioning frothing component, the Jura loses its appeal.

When working properly, the Jura frother produces creamy, thick and foamy milk. When something’s gone awry, the milk is watery and trickles out. The machine might also spray bursts of bubbles from the spout.

If you have a Jura machine with an attached hose, you can easily correct frothing issues. Replace the hose. The Jura Accessory Set for Milk Systems comes with new valves and extra hoses in case you run into this problem again. This milk systems set is compatible with the E8, E80 Piano Black (2015), E6/E60/E600, D6/D60/D600, A9/A900, A7/A700, ENA 8, ENA MICRO 90, WE8 models.

Another problem that could interfere with milk flow and even the taste of some coffee drinks, is build up in the machine. Jura milk frothing system cleaner removes milk fat and other residue in the machine. You're supposed to use this cleaner regularly. However, it's easy to lose track of how many days have gone by without cleaning the frothing system when you're enjoying lattes and cappuccinos at the press of a button.

You will need to use the Jura Milk system container when cleaning. Attach it to the milk hose and the milk residue is rinsed into the container. If you purchased your machine secondhand and don't have this accessory, you can purchase it through the Jura store on Amazon.

To maintain a milk system, it’s important to routinely remove the frothing spout and rinse away residue. Consult the machine’s manual on how to dismantle the spout for proper cleaning.

Sometimes a Jura machine produces a thin, weak pour, or worse, drips. This could be due to too fine of a grind, which might block the system. It could also mean that the water hardness settings aren’t properly programmed.

First, check the grind setting and adjust to a coarser grind. If that does not work, then address the water hardness setting. If it's been a while since you descaled your machine, try using descaling tablets.

Another issue could be the machine’s water filter. Most Jura machines use Clearyl filters. If not properly installed or left in long after it needs to be replaced, filters can hinder the flow of water through the coffee grounds.

Crema is the creamy brown foam that sits atop a shot of espresso. It signals the quality of your espresso shot. If you’ve noticed your Jura machine no longer produces good crema, you may want to reconsider the coffee beans you’re using. Flavored or dark roast beans produce more oil and leave behind residue that can cause fine grinds to bind, creating a paste-like obstruction inside the machine.

Coffee beans come in different roasts and sizes. When you grind your beans, they can produce flakes and other residual particles that may clog your grinder. Most of the Jura machines include a stainless-steel burr grinder.

If you can hear your coffee grinder working but your machine is not dispensing any coffee, there may be grounds stuck in the machine. To dislodge them, you’ll have to remove the top and side panels of the machine so you can see the coffee grinding mechanisms. If it’s as simple as grounds stuck in place, you’ll be able to locate the coffee grounds and dislodge them with a thin object, such as an icepick or skewer.

Jura machines come equipped with steel burr grinders. If you’ve had your machine for a few years and the grinder no longer works, you may need to replace the burrs or gasket in the grinder. Jura sells replacement parts, however, unless you are experienced repairing small appliances, it’s best to consult the manufacturer and have the parts installed by a professional. These machines are expensive. Why risk permanent damage?

If your coffee tastes bitter or too strong, the first thing to do is to check your coffee grinder setting. If grinds are too fine, you’ll produce coffee that might be more intense than you prefer. Adjust the grinder to a coarser setting.

Check your water, too. Remember, water is 95 to 98 percent of a coffee. If you start with poor quality water, the machine can't fix that. Jura machines use proprietary water filter cartridges, such as the Jura water filter, which fits the Jura E6 or the Jura blue water filter for the Jura A1.

Your machine might also need to be cleaned or descaled. For regular cleaning, use the Jura 64308 cleaning tablets, which work with all Jura machines to remove oil buildup.

Use Jura decalcifying and descaling tablets to descale the water container. Descaling can eliminate mildew, limescale deposits and mineral buildup that can produce bad tasting coffee.

And check your beans. Freshly roasted beans produce better flavor. Don’t confuse expiration or “best by,” dates with freshness. Coffee rarely goes bad and can sit on store shelves for years. However, coffee tends to begin losing its flavor within days after roasting. Consider using freshly roasted beans from a small-batch roaster.

If your coffee tastes too weak, this can usually be fixed by adjusting the water flow and grinder settings. Your grinder setting is probably too coarse; adjust the grinder to a finer setting. Consult your machine’s manual to adjust the programmed water levels.

Jura machines come with a display system that notifies users of problems such as “missing tray” or “bean cover is not fitted.” However, it also displays error messages, signaling something a bit more than a routine fix. The "error 2" and "error 5" are two of the most common error messages that flash on its display.

If you get these errors, it means the machine was exposed to the cold for too long. Perhaps you left the machine in an unheated home while you were on vacation or in the trunk of a car during a winter storm. The machine’s heating element is disabled for safety. Jura recommends warming the machine at room temperature.

For other errors, Jura recommends contacting customer service, because these usually involve going inside the machine to fix.

Merlisa Lawrence Corbett is a writer for BestReviews. BestReviews is a product review company with a singular mission: to help simplify your purchasing decisions and save you time and money.

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