Bunn Speed Brew Overflow – 4 Main Reasons and 4 Easy Remedies to Prevent Water and Coffee Overflow

Bunn Speed Brew coffee machine comes with several useful features and it offers a great tasting coffee at the shortest time possible.

It allows you to use less electricity, so you’ll be saving money on your electric bill and the machine works faster too.

It is a top-rated coffee maker that is easy to use and maintain at the same time.

It can brew from 4 to 20 cups of coffee in one hour and that’s why it is called as a speed brew machine.

The machine looks great because it has a sleek design and it comes with a great price tag.

You can brew your coffee in just few minutes and you’ll have fresh hot coffee in the morning without waiting for too long.

Instead of spending hours standing in line at the supermarket just to buy your favorite coffee blend, you can brew your favorite coffee at your home with this machine.

This coffee machine can also make iced coffee, tea, and hot cocoa!

So, if you’re looking for a great all-around coffee brewer, then go for Bunn Speed Brew Coffee Machine.

However, just like any other machine, this coffee maker too faces a major issue which is a water or coffee overflow.

Because of an overflow of the filter basket with too much coffee, ground coffee, or finely ground coffee; coffee machine can brew slowly.

You may think that you are not using enough coffee but you are brewing too much coffee.

When the water is boiling, the filter basket will begin to fill with ground coffee.

When this happens, the overflow valve should be opened and let some of the ground coffee escape.

Overflow is caused by an obstruction in the cartridge of a filter basket or another part of the machine.

This obstruction may be simply a clog where there should be no clog at all.

At the same time, a small piece of foam inside a filter basket which is usually not been cleaned properly, can cause water overflow.

The most common reason for an overflow is simply because there was an old clog in one of these places.

And it remains there because water can’t stop flowing through it.

So, to fix these issues, you have to remove the overflow filter and rinse it properly.

After that, just make sure you add coffee grounds to the basket after brewing.

For more reasons that cause this overflow in Bunn Speed Brew machine, you need to continue reading this article till the end.

Table of Contents

4 Main Reasons for Water Overflow in Bunn Speed Brew Machine

Reason 1: Stuck Coffee Grounds and Buildup of Mineral Deposits

The Bunn Speed Brew machine often gets clogged with stuck coffee grounds and internal calcium deposits.

Use of hard water can lead to mineral buildup which must be removed from time to time.

Also, the stuck coffee grounds should be removed properly by cleaning your coffee machine on a regular basis.

These two clogged things often leads to water overflow in the machine.

Reason 2: Improper Use or Poor Maintenance

If you don’t use Bunn coffee machine the right way, then it can also lead to water and coffee clogging and overflow.

During the brewing process, sometimes excess coffee comes out through the brew head due to improper grinding technique.

The overflow problem also happens when you put wrong amount of coffee grounds in your machine for brewing.

Reason 3: Brewing Excessive Coffee

Too much coffee can cause more overflow during brewing.

Usually, you should know the right amount of coffee grounds to be used for brewing in your machine.

You can refer user’s manual to know how much quantity of coffee is allowed to brew in your machine at a given point of time.

Reason 4: Insufficient Coffee Grinding

If an adequate amount of coffee is not used for brewing, the overflow will happen.

Improper ground coffee also leads to water or coffee overflow.

If you use too much coarsely ground coffee or excessive fine ground coffee, then also water overflow or coffee overflow issue happens.

4 Main Solutions to Fix Overflow Problem of Bunn Speed Brew Machine

Solution 1: Remove Mineral Buildup and Coffee Residue

By following regular cleaning schedule of your coffee machine, you can avoid internal machine clogging.

The machine gets clogged with coffee particles and calcium deposits over a period if you don’t clean your machine regularly.

Descaling the Bunn coffee machine with the best quality universal descaling solution will solve the clogging problem of your Bunn coffee machine.

Once clogging problem is solved, you automatically solve the problem of water and coffee overflow.

Solution 2: Use Fresh Coffee Beans

If coffee is not ground or is too old, it will start overflowing sooner or later.

This is why it is very important to use only fresh coffee beans and not stale coffee beans for brewing coffee in the Bunn coffee maker.

Fresh coffee beans also enhance the overall taste and flavor of your coffee.

It also helps in reducing the overflow of coffee in the machine.

Solution 3: Grind Coffee Beans Properly

I recommend to use best quality coffee grinder to properly grind your coffee beans to make them finely ground powder.

A poor quality grinding technique can cause unnecessary coffee and water overflow.

The coffee you use for brewing in the Bunn coffee machine, must be finely ground and should not be too coarse to prevent overflow problem.

This is where a good quality coffee grinder such as Breville Smart Grinder Pro plays a pivotal role in providing the best ground coffee.

Solution 4: Fill Up the Water Tank Appropriately

Sometimes, coffee machine users fill up the water tank with excessive water beyond the marked level.

This causes water overflow problem once the brewing process starts.

Also, if you don’t clean the water tank properly, it can accumulate calcium deposits over a period.

So due to lack of cleaning, water tank gets clogged and then it obstructs the water flow which causes overflow issues later on.

Therefore, you need to fill up the water tank with the right level of water and also need to clean it on a regular basis to prevent its clogging.

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How to Empty a Bunn Speed Brew Machine Overflow Cup?

Many Bunn users ask this question because they want to use the cup to make coffee.

Others may be trying to avoid an expensive replacement (or maybe even just a mess) that could come from forgetting the cup was even attached and overflowing the unit.

Fortunately, there’s only one real way to approach emptying the overflowing cup.

First, carefully dismantle it so you can remove the collar and get to where your coffee is being collected.

Make sure the electrical outlet is disconnected.

Many users ask about dirty units that are not cleaned up properly.

There is no need to remove the overflowing cup for cleaning.

Because as long as the overflow mechanism is working properly, there is no reason for coffee to get inside the unit itself.

Removing the overflowing cup can void your machine warranty.

It also makes it easier for foreign material to enter and clog up the drain pipe of your Bunn Speed Brew Machine.

If you can’t avoid removing it, at least be sure you go slowly (do not force anything).

Also, provide support to help hold any structure from falling in case you accidentally dislodge something.

5 Simple Steps to Adjust the Water Flow of Bunn Speed Brew Coffee Maker

There is a blue panel on the side of the Bunn Speed Brew coffee maker that you can use to adjust the water flow.

To change the drip rate, turn this dial clockwise or counterclockwise until your desired flow rate is reached.

You will know if you have reached your desired flow rate when there are no longer any drips from your spout.

Step 1: Check the working condition of it first.

Step 2: Make sure the “Set/Lock” switch is on “Set”.

Step 3: Hold down the “Start” or “Brew” button on your coffee machine until three clicks are heard.

Step 4: Push the “Start” or “Brew” button once or twice if the machine does not discharge water every two seconds.

Step 5: Hold down the “Start” or “Brew” button until three clicks are heard, then release it immediately.

7 Steps to Get Water out of a Bunn Speed Brew Reservoir

You need to properly clean the water reservoir of your Bunn Speed Brew machine especially when the machine starts spitting out a black, murky liquid that smells almost like a poop.

Now, how to remove dirty water out of your machine’s water reservoir?

Here are the 7 simple steps to do the same.

Step 1: Unplug the coffee maker.

Step 2: To chill the coffee maker, fill a second decanter with cold water and pour the contents into the reservoir.

Step 3: Remove the filter basket and the glass coffee decanter from the heating plate from the machine.

Step 4: Counterclockwise spin the circular disc above the brew funnel until it falls off.

Step 5: Hold the Bunn coffee maker tightly while tipping it upside down over a sink to drain the reservoir.

Step 6: To replace the spray head, turn it counterclockwise.

Step 7: After emptying and refilling the Bunn coffee maker, wait at least 5 minutes before turning it back on.






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