Cuisinart CHW-12 Coffee Plus 12-Cup Programmable Coffeemaker with Hot Water System, Black/Stainless Logo

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DonB Posted on Jan 06, 2017

Cuisinart chw-12 coffee, hot water machine add water light flashes even when full. Will not heat when flashing

Problem just started. light goes out and water heats when reservoir is low. reverse of how it should work.

  • DonB
    DonB Jan 06, 2017

    not sure how this ends up under cars and trucks. i put it under cuisinart. sorry

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5 Related Answers

Pierre Laplante

  • 2061 Answers
  • Posted on Feb 10, 2008

SOURCE: Cuisinart Coffe Maker has no power

vinegar is not the best thing descaler vinegar remove calciumin little piece that might block thr rest of machine descaler produit melt calcium 1 part solution 1 part water fill the water tank start machine leave it running for few second turn off for 15 minute and repeat untill empty dont forget to rince the machine very good that stuff is very corosif but does the jobs thanks for using fixya pierre

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Anonymous

  • 2 Answers
  • Posted on Jan 08, 2009

SOURCE: Cuisinart Grind & Brew not using all the water in the reservoir

I was having problems like this and then I read on a different string on this website that people have had success by flushing the system numerous times (sometimes up to six times) with vinegar. I took out the charcoal filter and flushed once with vinegar but only saw a small amount of improvement. I was out of vinegar so I used Lemishine mixed with water and it went from making one cup to making a full pot with one flush.

Anonymous

  • 85 Answers
  • Posted on Jul 09, 2009

SOURCE: Cuisinart DCC-1150 series coffee pot how to clean reservoir

Hello dhubert14,
This is a really common problem with the cuisinarts. I am most familiar with the DCC-1200, but you may be able to solve the problem. This an indication that something is plugged up. Open the top of the unit and in one of the corners you should find a filter stick or column that is removable. Pull it out and open it up to clean out the clogged up carbon filter in there. (You can later buy a new filter on Amazon.) Clean out the debris from the bottom of the cavity. Replace the stick into the cavity once cleaned. Now it's time to run through a solution of 2 parts water and 1 part vinegar. Do this once or twice with fresh solutions, then with a pot of fresh water. When the filter stick is plugged up the sensor says its time to clean it, but most people don't know about this fix. I hope this is really helpful to you, dhubert14. Positive feedback is appreciated. Good luck. NormanZ

Anonymous

  • 85 Answers
  • Posted on Jul 11, 2009

SOURCE: cuisinart Coffee on Demand?12-Cup Programmable Coffee

Hello crystalmeikl,
This is a really common problem with the cuisinarts. I am most familiar with the DCC-1200, but you may be able to solve the problem. The may be an indication that something is plugged up. Open the top of the unit and in one of the corners you should find a water filter stick or column that is removable. Pull it out and open it up to clean out the clogged up carbon filter in there. (You can later buy a new filter on Amazon.) Clean out the debris from the bottom of the cavity. Replace the stick into the cavity once cleaned. Now it's time to run through a solution of 2 parts water and 1 part vinegar. Do this once or twice with fresh solutions, then with a pot of fresh water. When the filter stick is plugged up the sensor says its time to clean it or shuts the unit down, but most people don't know about this fix. I hope this is helpful to you, crystalm. Positive feedback is appreciated. Good luck. NormanZ

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Steve Allison

  • 5569 Answers
  • Posted on Jul 15, 2009

SOURCE: Cuisinart COD 4000 coffeemaker

Just a comment; most of the coffee maker failures are caused by the premature failure of a thermal fuse that is intended to prevent fire in case the main heater doesn't turn off as it should. Unfortunately, most of these parts come from China and are very poorly made so the point at which they 'protect' is pretty unpredictable, many of them failing at a much lower temperature than necessary. The second most common failure is the thermal switch that cycles the main heater element; these are bimetallic switches that grow 'tired' and the point at which they open and close again gets wider apart until it can take an hour for a 12-cup pot to finish brewing.

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Related Questions:

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What are the black flakes that continue to show up in the hot water side of my cuisinart chw12

Most likely the heater is breaking down or may have over heated and the flakes are the corrosion breaking off on the heater itself.
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Cuisinart CHW-12 goes dead before completing brew. No lights, no clock- just dead as if a fuse were blown, but outlet is still live.

My first guess would be that the control panel above the carafe has a thermally sensitive component or poor contact that acts like a fuse when it heats up but is fine after a cool-down. If this is the cause, disassembly and detailed inspection are required. If you're handy with a low-wattage soldering iron (30W), you could resolder connections on on the controller.

My second guess would be that there may be an over-temperature circuit in this unit that removes power if the unit gets too hot (you don't want a fire and Cuisinart has has some history here). If this is the cause, there is a failed thermostat in the heating system.
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