20 Most Recent Mr. Coffee JWX27 12-Cup Coffee Maker Questions & Answers


The coffeemaker should only beep either when it detects that it has emptied the reservoir or when the two-hour warming timer expires. If it beeps at other times, but stays on, the reservoir sensor has gone bad (as did my last one). The coffeemaker should continue to work fine otherwise though.

Mr. Coffee JWX27... | Answered on Feb 24, 2016


Bummer. Pray that this is not a board level (electronic) failure. If you are mechanically inclined and patient, try to disassemble the cover or assembly holding the switch. Hopefully there is a mechanical reason, like a jam or blockage, preventing the switch from working properly. Otherwise, I hope you're under warranty. Good luck.

Mr. Coffee JWX27... | Answered on Aug 21, 2015


The heating element has gone bad. Since it is not a user-serviceable part, I recommend replacing the coffeemaker.

In the future, make sure you do not add water to the reservoir unless the coffeemaker has been turned of for at least five minutes. This will help prolong the life of the heating element.

The heating element will naturally degrade over time. But, it can incur sudden damage when the reservoir is refilled with water too soon - while the element is still hot. Because of the simple design, if the coffeemaker is on, then both the warming plate's heating element and the reservoir's heating element are on. So, after a brewing cycle is complete, the reservoir's heating element stays on. Without any in the reservoir to keep it cool, the heating element superheats. So, if water is put in the reservoir while the coffeemaker is on or before the element has adequately cooled, the sudden burst of steam from the water contacting the element can be quite violent.

Mr. Coffee JWX27... | Answered on Oct 25, 2014


Yes, it does sound like the heating element needs to be replaced. However, this coffeemaker is not built to be serviceable in that regard.

I recommend replacing the coffeemaker.

In the future, make sure you do not add water to the reservoir unless the coffeemaker has been turned of for at least five minutes. This will help prolong the life of the heating element.

The heating element will naturally degrade over time. But, it can incur sudden damage when the reservoir is refilled with water too soon - while the element is still hot. Because of the simple design, if the coffeemaker is on, then both the warming plate's heating element and the reservoir's heating element are on. So, after a brewing cycle is complete, the reservoir's heating element stays on. Without any in the reservoir to keep it cool, the heating element superheats. So, if water is put in the reservoir while the coffeemaker is on or before the element has adequately cooled, the sudden burst of steam from the water contacting the element can be quite violent.

Mr. Coffee JWX27... | Answered on Oct 25, 2014


First, let me clarify what the red light indicates.

A solid red light indicates the cleaning cycle is in progress. A blinking red light indicates the coffeemaker is off, but due to be cleaned. When the coffeemaker is due to be cleaned, the red light will continue to blink while the coffeemaker is off until the cleaning cycle has been completed fully. The entire cleaning process takes about an hour and a half. And, it is not intuitive. So, here are my instructions.

With the coffeemaker off (with the red light blinking), pour four cups of pure white vinegar (no water added) into the reservoir. Don't short the amount. You'll need four cups to complete the cycle. Remove any filters, but leave the strainer basket in place. Tap the "select" button three times until the red light is on (and stays on, not blinking). The cleaning cycle now begins. It should take between 45 minutes and an hour to complete. Don't be concerned about the 30-minute long pause during the cycle when nothing happens. This is intentional and part of the cycle.

After the cleaning cycle has completed, get rid of the vinegar. Rinse out the strainer basket and the coffee pot. Run a full pot of clean water thru a regular brew cycle (with the pot and basket in place, of course). Then, dump the water, rinse the pot and basket again, and run another full pot of clean water thru a regular brew cycle. Dump that water too. And, you're done!

Mr. Coffee JWX27... | Answered on Oct 25, 2014


The heating element has gone bad. It's time to replace your coffeemaker.

In the future, make sure you do not add water to the reservoir unless the coffeemaker has been turned of for at least five minutes. This will help prolong the life of the heating element.

Mr. Coffee JWX27... | Answered on Oct 25, 2014


First, let me clarify what the red light indicates. A solid red light indicates the cleaning cycle is in progress. A blinking red light indicates the coffeemaker is off, but is due to be cleaned.

The red light will continue to blink while the coffeemaker is off until the cleaning cycle has been completed fully. The process takes about an hour and a half and is not intuitive. So, here are my instructions.

With the coffeemaker off (with the red light blinking), pour four cups of pure white vinegar (no water added) into the reservoir. Don't short the amount. You'll need four cups to complete the cycle. Remove any filters, but leave the strainer basket in place. Tap the "select" button three times until the red light is on (and stays on, not blinking). The cleaning cycle now begins. It should take between 45 minutes and an hour to complete. Don't be concerned about the 30-minute long pause during the cycle when nothing happens. This is intentional and part of the cycle.

After the cleaning cycle has completed, get rid of the vinegar. Rinse out the strainer basket and the coffee pot. Run a full pot of clean water thru a regular brew cycle (with the pot and basket in place, of course). Then, dump the water, rinse the pot and basket again, and run another full pot of clean water thru a regular brew cycle. Dump that water too. And, you're done!

Mr. Coffee JWX27... | Answered on Oct 25, 2014


That's not a lot to go on. But, I'm going to presume the obvious has been checked and say that the warming plate's heating element has gone bad. This is not a serviceable part. So, it is time to replace your coffeemaker.

Mr. Coffee JWX27... | Answered on Oct 25, 2014


I couldn't find any model JWX23. So, since your question (as much as it is) is categorized under model JWX27, I'm going to presume you need the cleaning instructions for model JWX27.

With the coffeemaker off (with no lights on or with the red light blinking), pour four cups of pure white vinegar (no water added) into the reservoir. Don't short the amount. You'll need four cups to complete the cycle. Remove any filters, but leave the strainer basket in place. Tap the "select" button three times until the red light is on (and stays on, not blinking). The cleaning cycle now begins. It should take between 45 minutes and an hour to complete. Don't be concerned about the 30-minute long pause during the cycle when nothing happens. This is intentional and part of the cycle.

After the cleaning cycle has completed, get rid of the vinegar. Rinse out the strainer basket and the coffee pot. Run a full pot of clean water thru a regular brew cycle (with the pot and basket in place, of course). Then, dump the water, rinse the pot and basket again, and run another full pot of clean water thru a regular brew cycle. Dump that water too. And, you're done!

Mr. Coffee JWX27... | Answered on Oct 25, 2014


If the red light is still blinking, then the cleaning cycle has not yet been completed. The cleaning cycle is not intuitive. So, here are my instructions.

With the coffeemaker off (with the red light blinking), pour four cups of pure white vinegar (no water added) into the reservoir. Don't short the amount. You'll need four cups to complete the cycle. Remove any filters, but leave the strainer basket in place. Tap the "select" button three times until the red light is on (and stays on, not blinking). The cleaning cycle now begins. It should take between 45 minutes and an hour to complete. Don't be concerned about the 30-minute long pause during the cycle when nothing happens. This is intentional and part of the cycle.

After the cleaning cycle has completed, get rid of the vinegar. Rinse out the strainer basket and the coffee pot. Run a full pot of clean water thru a regular brew cycle (with the pot and basket in place, of course). Then, dump the water, rinse the pot and basket again, and run another full pot of clean water thru a regular brew cycle. Dump that water too. And, you're done!

Mr. Coffee JWX27... | Answered on Oct 25, 2014


I couldn't find any model JWX23. So, since your question (as much as it is) is categorized under model JWX27, I'm going to presume you need the manual for model JWX27.

You can find the manual for model JWX27 directly at the following link (for as long as it lasts):http://demandware.edgesuite.net/aamb_prd/on/demandware.static/Sites-mr-coffee-Site/Sites-mr-coffee-Library/default/v1414150683537/documents/instruction-manuals/JWX27_43_56431310.PDF

Mr. Coffee JWX27... | Answered on Oct 25, 2014


It is most likely high-density silicone, which would be able to withstand the relatively high temperature and durable enough to withstand the repeated heating and cooling.

WARNING: You are taking a risk with your health using any non-food-grade material. They are not inspected for impurities and other trace contaminants that could make you very sick.

Mr. Coffee JWX27... | Answered on Oct 25, 2014


Inspect the strainer basket's valve to make sure it is not blocked and working properly. You should be able to test it in the sink, fill with water and push the valve up from underneath. Tap the valve a few times to loosen any debris that might be blocking it.

Make sure the pot is fully in place on the warming plate. The lid must align properly with the strainer basket to open the valve adequately. If the pot lid is not touching the strainer basket valve, you may have the wrong pot or the strainer basket is not seated into the coffeemaker correctly. Check for obstructions underneath the strainer basket. Then, make sure the rounded projection aligns with the notch in the coffeemaker near the reservoir.

Mr. Coffee JWX27... | Answered on Oct 25, 2014


I presume you are requesting instructions for cleaning this coffeemaker...

With the coffeemaker off (either a red blinking light or no light on), pour four cups of pure white vinegar (no water added) into the reservoir. Remove any filters, but leave the strainer basket in place. Tap the "select" button three times until the red light is on (and stays on, not blinking). The cleaning cycle now begins. It should take between 45 minutes and an hour to complete. Don't be concerned about the 30-minute long pause during the cycle when nothing happens. This is intentional and part of the cycle.

After the cleaning cycle has completed, get rid of the vinegar. Rinse out the strainer basket and the coffee pot. Run a full pot of clean water thru a regular brew cycle (with the pot and basket in place, of course). Then, dump the water, rinse the pot and basket again, and run another full pot of clean water thru a regular brew cycle. Dump that water too. And, you're done!

Mr. Coffee JWX27... | Answered on Oct 25, 2014


You can find the manual for this coffeemaker directly at the following link (for as long as it lasts): http://demandware.edgesuite.net/aamb_prd/on/demandware.static/Sites-mr-coffee-Site/Sites-mr-coffee-Library/default/v1414150683537/documents/instruction-manuals/JWX27_43_56431310.PDF

With this coffeemaker, you can brew with the cover open. I recommend observing a brew cycle to see if the coffee with floating grounds are overflowing the filter into the strainer basket. If this is the case, inspect the strainer basket's valve to make sure it is not blocked and working properly. Also make sure the pot is fully in place so that the lid aligns properly with the strainer basket to open the valve adequately. Otherwise, the filter and/or the coffee grounds are too fine. I recommend a permanent filter basket (around $5) and course-ground coffee. Both will add to better tasting coffee.

Mr. Coffee JWX27... | Answered on Oct 25, 2014


No. This coffeemaker is not built to be serviceable in that regard.

You can wipe down the inner-sides of the reservoir for a slightly better maintenance cleaning. But, 4 cups of pure white vinegar (no water added) in the hour-long cleaning cycle followed by two pots of fresh water in the brewing cycle is really the best way to clean the rest of the inner-parts which contact the liquids.

If your real purpose for your question is how to resolve the elongated brewing times, I'm afraid that is a symptom of damage to the heating element. This too is not serviceable.

The heating element will naturally degrade over time. But, it can incur sudden damage when the reservoir is refilled with water too soon - while the element is still hot. Because of the simple design, if the coffeemaker is one, then both the warming plate's heating element and the reservoir's heating element are on. So, after a brewing cycle is complete, the reservoir's heating element stays on. Without any in the reservoir to keep it cool, the heating element superheats. So, if water is put in the reservoir while the coffeemaker is on or before the element has adequately cooled, the sudden burst of steam from the water contacting the element can be quite violent.

You can get a faster brew cycle by putting warm water into the reservoir and making coffee right away. But, depending on your hot water supply, the coffee may not taste quite as good.

Mr. Coffee JWX27... | Answered on Oct 25, 2014


One spoon per two cups of water

Mr. Coffee JWX27... | Answered on Nov 01, 2011

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