Bunn Coffee Maker Warmer Not Working? [Fix It Today!]

Coffee lovers all over the world have one thing in common besides their love for good coffee, and that is their appreciation for functional coffee warmers. Of the numerous brands on sale today, one of the best is a Bunn Coffee warmer.

Bunn is a household coffee machine and has been a top choice for buyers for years now. But one common issue many owners face is the Bunn coffee maker Warmer not working.

This is one frequently asked question by users, but why? Is that because Bunn coffee makers are not reliable? Of course, they are reliable. If they weren’t, they wouldn’t be as popular as they are today. So if that is the case, how then do you fix it?

In this article, we will explain some of the common reasons why users experience Bunn Coffee makers warmer not working. Then, to cap things up, we will also provide you with quick fixes to rectify the problem to bring your coffee maker up to speed again.

Reasons why Bunn Coffee Maker Warmer may stop working

There are several possible reasons why your coffee maker warmer may stop working. If you are able to figure out why you will be better placed to fix the problem.

Problem 1: Faulty Switch or wiring

One common cause is if the switch of the warmers is faulty or the wiring is bad.

This occurs when there is an electric surcharge or a short circuit problem. If any of these occurs, the internal wiring will be damaged.

The effect will not occur overnight but gradually. Then at some point, you will notice that the warming plate will just stop working because the internal circuit is no longer supplying power.

Problem 2: Overheating

Another common reason why the Bunn Coffee warmer not working is the issue of overheating.

The internal circuit may not still have its wiring intact, but if it gets overheated, this can be a problem. If you use the warmer often, this may happen sooner than you expect, but it is not a major cause for concern.

Coffee machines have a fuse or thermostats that safeguard internal circuitry, so in the event of a tremendous temperature rise, it is the thermal fuse that will go bad.

However, if the machine overheats to dangerous levels, the internal circuit could be permanently damaged.

Moreover, a fried internal circuit can also lead to a fire outbreak if care is not taken. This is why the thermal fuse will be triggered to cut the power supply flowing into the Warmer. So instead, it bears the brunt of the damage, not the machine itself.

Also Read: Bunn Coffee Maker Leaking from the Bottom? (Stop it Now)

How to Fix the Problem of Bunn Coffee Maker Warmer not working

Regardless of the cause of the problem, there are basically two ways to fix it. The two options are

  • Fix it yourself (DIY)
  • Hand it over to an expert to fix it for you

The first option will cost you no money. All you will have to do is get the required work tools. The second option will require that you pay the expert to fix it for you.

Below, we take you through the simple steps to fix your Bunn Coffee Maker on your own, DIY style.

DIY steps to fix your Bunn Coffee Warmer

To fix your Bunn coffee warmer, you will have to change the faulty or burnt internal fuse. To do this successfully, here are the tools you will require.

  • Thermal fuse kit
  • Screwdriver
  • Copper wire cutter

Once you have arranged all of these, follow the steps below.

Step 1- Unplug the machine

Start by unplugging the machine from the power outlet. Doing this will remove the risk of electric shock, and you can work your machine more efficiently.

Step 2- Remove screws

Pick up your screwdriver and remove all the screws from the compartment that houses the internal fuse. To know where it is, consult the User Manual that came along with the machine. For most coffee warmers, that will be a top panel protected by 2 screws. Unscrew and remove the panel protection.

Step 3- Remove the upper panel

At this point, remove the upper panel protecting the water tank/reservoir. 

Step 4- Examine the internal circuit

After taking out the panel, the internal circuitry will be exposed. This is where all the fuses are stored. Examine them before you begin to take them apart.

Step 5- Remove the white roll

Now is the point you should get handsy with your coffee warmer. Remove the white roll carefully and make sure you don’t mess up the thermal fuses through which current flows through the device.

Now, remove another plastic roll on one of the fuses. Most of the time, the fuses are connected in twos. You can examine them with the aid of an Ohm meter to check if one or both has electric resistance.

This will let you know which of them requires replacement.

(There are different thermal fuses you can buy at affordable prices but we recommend that you only buy a reliable one that will serve you for a long time. Ensure you do your due diligence before buying a thermal fuse for your Bunn coffee maker warmer.)

Step 6 – Replace the fuse

Switch your new fuse or set of fuses in hand, replace the old with the new.

To do this, disconnect there copper wire connecting the faulty fuse to the internal circuitry. A wire cutter will come in handy for this step.

Step 7- Strip the wire

After cutting the copper wire, strip the exposed wire by a few inches (0.25 inches), then remove the old fuses and connect the new ones to the exposed part of the copper wire you stripped. Ensure that they are properly fitted and in place. 

Also, check there will not fall off afterward. A slight nudge will help you know.

Step 8- Reinstall the fuses

Now, reinstall the fuses to their proper position by sliding them back in.

Double-check the plastic rolls and ensure that they stay in their original position just as they were when you first got started.

Then reinstall the plastic cover, reservoir, and upper lid and return the screws where necessary.

Note: After you have reinstalled the fuses, do not plug and turn the device on. Instead, fill up the water tank with water first before plugging the device to turn it on.

When it starts brewing, wait for about 15-20 minutes to observe if hot water is coming out of that coffee decanter. If it is, then this is an indication that the coffee warmer is working effectively.

Bunn Coffee Warmer Faulty Switch

If your case is that of a faulty switch and not a fuse, then you will need a different solution to your Bunn coffee warmer not working. 

In the case of a faulty switch, this is common with wear and rear caused by constant and prolonged use. If your Bunn coffee warmer switch is bad, the device will stop warming or heating water. What you need are a new warmer switch and a screwdriver.

Just as with the changing of the thermal fuses, you will have to be mindful of the warmer switch you use. The last thing you want is to buy a switch that will not last for long but will go bad after w few weeks. On the other hand, if you use your coffee warmer very often, what you need is a compatible and durable switch that will stand the test of time.

Once you get the new switch, open the switch panel, untangle the copper wire connected to the old switch and remove it. Then install the new one before replacing the screws.

FAQs about Bunn Coffee Warmers

What is the highest temperature a Bunn Coffee Warmer can reach?

A Bunn Coffee warmer can reach temperatures of 204 degrees Fahrenheit. This temperature is the ideal temperature for the brewing process.

Which model makes the hottest coffee?

As you may already know, Bunn has different models, but the model with the hottest temperature is the Bunn Heat N Brew. This warmer can reach close to 200 degrees Celsius but hardly ever drops below 198 degrees.

How many decanters does a Bunn Coffee warmer have?

Most Bunn coffee maker warmers have only one decanter. Be sure to check the model you have online to see if it’s any different.

What is the major reason (s) for a Bunn Coffee Maker Warmer not working?

They are mainly two. The first one is a damaged thermal fuse and the second, a bad switch. However, both can be repaired to get the coffee warmer working again.

Conclusion

No coffee drinker likes cold coffee. Yes, we’re talking about the ones that turn cold not the ones that are made cold.

Bunn coffee maker warmer plate not working is one common problem that many people have to deal with. So if you notice your machine acting up, don’t be alarmed since it can be fixed with little effort.

The major issues are mainly a damaged fuse or switch. If you replace the bad ones with new ones, your Bunn coffee warmer will be good as new and you can enjoy hot brewed coffee as and when you wish.

Just follow the steps highlighted above. And more importantly, make sure that the new replacement parts you got are original versions, not fakes.

Here’s to hot quality coffee!

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