Question about Bunn Pour-O-Matic VPR

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Can anyone supply me with detailed photos of the wiring to a Bunn-O-Matic VPR?

The machine needed a good cleaning so I went to it. Half way through I realized I should have taken some pictures so I could identify the wires and get them put in the right place.

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The VPR manual is on the website. (Free)
*** the following is for information only as all repairs should be performed by a qualified Bunn tech. ***
* The VPR has two heaters in the brewer. There is an element inside the water tank (cylinder) which is wrapped in a warmer blanket which is also heated. (Like and electric blanket)
* There will be one or more warmer "Hot Plates".
* Most VPRs will power up as soon as it's plugged in. In other words there is no On/Off switch (though this may have changed in newer models or called a 'Vacation' switch that turns off all the internal heaters.)
* Each additional warmer plate will have it's own on/off switch.
* Internal heater(s) have thermal fuses on each heater. There may be a 2nd thermal fuse or High Limit on the tank - it looks like a disk with two tabs. The thermal fuses look like diodes that sometimes are enclosed in a plastic tube. There should be continuity on all good fuses. If it's open then replace.
* The element is straight forward. Similar to what you would find in a water heater. Which is basically what this brewer is. Just on a smaller scale.
* There is a bulb style thermostat wired in series with the main heater element. This is should be set to boil the water but it should not boil constantly. If it's always boiling then it's shorted. If it does not switch on when the dial is turned clockwise. Then it's open. Need to replace.
* Okay final note; I'm guessing the real question here is what the wires look like in the real brewer and not a bunch of lines on a paper. Most Bunn brewers come with a schematic (electrical) diagram under the top lid or inside a panel. So I've had that problem myself even though I have an Electronics background. You just have to take your time and follow each wire to the component. It's all there. But again, this should be performed by a Qualified Tech.
Aloha, ukeboy57

Posted on Feb 08, 2018


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Posted on Jan 02, 2017

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SOURCE: water not hot enough on bunn vpr

Make sure vacation switch is turned on (preheats water).

See manual here:

Posted on Dec 22, 2009

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SOURCE: BUNN VPR commercial coffee pot, not flowing in a

Your spray head has 5 to 6 little holes depending on the model and year, and it looks like you have scale, calcium or lime blocking them.
Since your model is a VPR pour model, you will have less trouble cleaning it with white vinegar than the permanent water connection type. I use a gallon of vinegar and filters for this.

Parts needed:
2 Clean, Rinsed Empty coffee cans
1 Gallon of White vinegar
5 coffee filters
1 Toothbrush, preferrably angled head

Start with your Bunn turned off and place an empty full size coffee can under the pour spout. Now place a filter in the brew basket to catch any fine particles you don't want poured back in the resevoir and heater. You will need to change this filter a few times as the trash starts coming out of your spout.

With the coffee can, brew basket, and a fresh empty filter in place you want to start pouring the vinegar in the tank while catching the water with the coffee can. As it fills with water you will need to dump the can down the drain until the full gallon of vinegar has been poured in the Bunn. Allow the excess water to finish flowing out into the coffee can making sure to leave half the water in the can to pour back into the coffee maker.

By now your tank should be filled with mostly white vinegar, and your coffee can should be at least half full of vinegar as well.
Now you can turn on the lower pot warmer to keep the solution hot and plug your Bunn into the outlet.

Allow 8 to 10 minutes for the heater to heat up and pour the half full coffee can of vinegar into the fill area. Allow the cycle to complete and replace the filter as needed, or if flow begins to slow down.
If your heads are clogged, use the toothbrush to clear the holes as the vinegar is flowing until you see all holes flowing vinegar.

Chunks of trash will dislodge in your heater tank and flow to your spray head, so keep that toothbrush ready.

Do this at least 5 times, then allow the Coffee maker to sit 30 minutes with the heater on to finish dissolving the lime and calcium deposits in the tank.

After 30 minutes start flushing the system with clean water to rinse out all of the vinegar, or until you can no longer smell vinegar in the coffee can.

Good Luck!

Posted on Mar 11, 2010

  • 635 Answers

SOURCE: Filter basket overflows after cleaning Bunn VPR Coffee Maker

Some people also try adding fresh grounds to brewed grounds, resulting in an overflow. A restricter valve can be used, but a better solution is to simply pour in half the water at a time. This is what people who buy non Bunn filters do to stop overfills.

Posted on Mar 11, 2010

  • 189 Answers

SOURCE: I need a wiring diagram for a Bunn BX coffee maker

I do apologize but these diagrams are not available. What is the problem with the machine? If you will get the model and code date from the bottom of the brewer and contact customer service, we can help resolve your issue. The machine carries a 3 year warranty and if it is 3 years old or less, it will be replaced at no cost. If it is older than 3 years old, then it will be replaced at a reduced price.

Posted on May 19, 2010

  • 35 Answers

SOURCE: Bunn VPR Series Coffee Maker

This machine has a reservoir that holds about 2.5 pots and keeps them at brewing temperature. Therefore you should pour in 3 pots (with a pot in place under the filter basket) until water flows from the basket. Then, and ONLY then, it is safe to plug in the brewer. If you plug in the brewer BEFORE filling the reservoir you will burn up the heating element and will have to have it replaced.
After the initial filling and heat up (about 20 minutes) you are ready to pour through a pot of COLD water through and brew.

Posted on Sep 10, 2010

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I think my bunn-o-matic VPR needs cleaning and I do not have a manual for this machine. Can you advise on how to do this?

To clean the vpr you will need to take the lid off the machine. Be sure to unplug while doing this. First clean the water tray. You can unscrew the nut holding this tray and clean the tray in your sink. Put the tray back in and put the lid back on. Plug coffee maker in. Fill one coffee pot with vinegar and pour it in machine. After the water finishes coming out let the coffee maker sit overnight. Before you start filling the maker with water at least 6 times, be sure to clean the spray head. Make sure the 5 or 6 holes are free and clear of any build up. Then start with fresh water. Fill the coffee pot with fresh clean water and pour into machine. Let it finish and do this at least 6 times. If you can still taste or smell the vinegar repeat until you cant.

Mar 19, 2013 | Bunn Pour-O-Matic VPR

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My bunn pour o matic coffee brewer will not brew. all burners get hot but it will not pump the water out into the filter basket. What could be the cause?

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This is a clogging issue. Meaning it needs to be cleaned. So what I want you to do, if first read this manual that I am sending you via a e-mail link. Just copy and paste link in browser; I am positive it is just clogged. In the manual it will show you some tips on how to unclog it with tooth pick etc... then you want to flush whole system with water and vinegar. Here is the link to put in browser.


Sep 29, 2011 | Bunn Pour-O-Matic VPR

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WE have the Bunn VPR series. It's a pourover

Hello this coffee maker has a one and a half gallon internal tank, could be one of a few problems, first thing to check is the spray head, unscrew this you may need some channel locks to get it off and check it..use a tooth pick to clear the 6 holes with any lime that may have formed...also if you use a commercial coffee company for your coffee they should have supplied you with a spring to clean the spray head tube. After checking these 2 items the next thing to check is there enough water in the tank..when the vpr is left on and not used for a few days the water in the tank takes approx two and a half pots of water to fill up the internal tank...try pouring another pot of water in...also turn machine off and take the 2 screws out of the top and see if there is lime blocking the drain hole in the fill pan. Hope this helps...please feel free to comment again if you have any other questions...Good Luck!!! Mike

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It sounds like the tank isn't full. Unplug the machine and make sure there is a pot underneath to catch water. Pour clean water into the tank until it starts flowing out. Plug the machine in and let it heat up. Then try brewing coffee.

The way your machine works is that there is a holding tank for the water and it isn't actually brewing with the water you just poured in, it is using the holding tank water. If the holding tank gets low, and you pour water in all it does is fill the tank but nothing will come out.

Hope this helps.

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