I have a older Bunn VPS coffee brewer I got off Ebay. All lights work, burners get hot, and I do fill the tank to the top. Its slow to start, but finnaly starts to heat the water for several minutes, then shuts off, never brewing any coffee. This goes over and over never a drop of water come out of the basket.
I did check the themostat, it is all the way up. I cleaned the hot water out let above the basket and checked for blockage. Dirty but clear.
Could it be that water is not geting hot enough?. Bad thermostat? Help!!
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Re: Bunn VPS Black Three burner coffee Brewer
Once you have the reservoir full and its heated. You put coffee in the basket. Then to make a pot of coffee you add another pot of water from a carafe into the fill area. This causes an overflow of excess hot water from the reservoir to spray onto the grounds and make a pot of coffee.
If you had a plugged spray head, you would have overflow from the fill screen area.
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The switches are for the "warmers" only. The brewer has a reservoir the keeps water hot and ready for brewing. When it is not re-heating water (after brewing) it has a "keep warm" heater that is low voltage and keeps it ready to go.
What model of Bunn is this? If it is a bx-b or any of the other home models, what has happened is that the plastic pour-in tray has become brittle and cracked where it mounts onto the tank. The only repair for this is to replace the tray with one from another brewer (possibly your local bunn Dealer has an old brewer lying around). If it is a commercial brewer (VPR, VPS, Ect) there will be a sael leaking on the top of the tank.
If you just bought this brewer, ask your retailer if they will replace it. if not, you can get ahold of the bunn warranty department in your country. they will give you instructions on getting a replacement. This brewer has a dead short in it.
I'm going to presume that your brewer is a VPS series pour-over brewer. This problem can be caused by several things, so I'll list the most common ones.
1) The on/off switch for the lower warmer could be burnt out.This switch also operates the heating element.
2) The high limit thermostat quite offen blows on the older VPS brewers. this is a small unit held down to the top of the tank and has 2 wires voming to it.
3) Look for burnt-off wires. These models sometimes burn off wires on the top of the heating element.
4) If none of these work, then your problem will be your heating element itself.
Parts for these models are readily available from your local Bunn repair shop.
The pour-over type of Bunn coffee brewers require several pots of water to fill an empty tank. 1. While unplugged, pour in two and a half to three pots of clean water (put an empty pot underneath the brew basket). When the tank is full, water will come out of the brew basket. 2. Plug the unit in and wait for it to heat - about 5 to 7 minutes. These brewers are meant to be left plugged in all of the time to keep the tank water hot. You will probably heat some rumbling noises which is normal as the water heats.
If for some reason the water isn't hot after 10 minutes you will need to check the thermostat. Unplug the machine and take the screws out of the top. The thermostat has a little dial or a t-bar that you can turn. All the way left is off and all the way right is boiling. Turn this up about 90% of the way and put the top back on the machine and plug it in. If it gets hot, you are ready to brew. If it doesn't get hot, you may have blown the limit thermostat and will need to replace it.
The limit thermostat isn't the same as the thermostat. It is a ceramic and metal item that senses if the tank gets too hot from having the unit plugged in without any or enough water in it. It is inexpensive and relatively simple to change.
look at the top of the coffee maker you'll see two screws and the warmer tray and the cover for adding water. remove the two screws and lift the top off. the warmer has two push on spade terminals. pull the wires off them. below is a tray where the water goes and you'll see a brass bushing. this is screwed into a fitting on the water tank. use a piece of steel as a spanner and unscrew this fitting. don't lose the gasket that's under it. the main wires for the burner element and thermostat are also under this tray. look at the top. there's nine screws that hold the top on the water tank. two white wires go to the tank warmer and two wires go to the tank heater inside. you can try turning up the thermostat setting to a higher range and see what happens. there's a copper pipe that comes from the tank to the sprayhead the tank holds approx three urn fulls of water. if you have an analog meter you can check the element for continuity on the RX1 range. Do the same with the tank warmer element. Bunn-o-matic has a web site you can buy replacement parts or nelson appliance can get you parts too.