My machine has been making very nice coffee for many months. A few days ago, I mistakenly left it on overnight, and since that time it has been producing very bitter espresso. Exact same beans and other conditions. I've tried cleaning out the system but nothing seemed to work. What can I do?
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two days is not enough for the machine to scale or get dirty from old grinds usually would be either coffee or water problem ---but depending on machine you have didnt specify- can be residue from plastic or container try running a vinegar cleanse than 3 just fresh water then try a coffee drop and see it taste is any different if no change bring back for a refund or exchange
If the water that comes into contact with the coffee grounds is too hot, you will extract bitter elements from the coffee. The water should not be boiling when poured on the coffee grounds. Coffee oils, fats and sediment are the natural parts of the coffee bean that causes bitterness by forming as the brew ages. The longer the coffee sits the stronger it tastes.
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If you are using a Claris filter, please remove this from the watertank. The descaling agent will clog the filter and make the water taste bad. After descaling, also be sure to rinse the watertank so there`s no resedue of the solvent left in the tank.
However, bitter taste on the coffe usually is related to the coffee side; Try to run a cleaning program. And check grinder settings. If the powder is to fine, it will increase the contact time, and that will make the coffee bitter. My advise is to clean the machine and experiment a little with the grinder settings.
besides a good coffee machine, 2 things are critical when you want a good cup of coffee; the coffee itself and the water. When in France, i tasted some of the best coffee I have ever had, but they always told me that the quality and purity of the water made for 50% of that great taste. Has your municipality changed anything about the water treatment recently? Do you drink that same water and find it tastes funny? Perhaps bottled water is a solution in your case. Hoping this helps.
If you look at the bottom, you'll probably find 'China' on it.
The problem you are having normally doesn't show up for a couple of months after the lime has had a chance to roughen the ball in the check valve that makes up the pump.
Your pump isn't pumping.
I suspect you have some particulate matter that has made its way to the primitive check valve and the ball is not moving freely as it should.
The copious amount of steam you are getting is from the bit of water that makes it to the heating element before the (yet to fail) thermal switch that cycles the heater element.
If you have a clean turkey baster, you may be able to flush whatever crud there is in the water path through to the outlet over the coffee basket by sticking the tip into the water chamber's exit hole.
We have a large veterinarian's hypodermic that does the job nicely when it is time to flush it again and soaking the water path with vinegar every few weeks overnight will help keep it pumping properly too.
If the flushing doesn't work, take it back before GE gets completely out of the appliance business.
(Whatever happened to Silex??)