Cooffe brews on its own

You should check to insure that the tank inside the machine is full of water. Pour in 1 pot of water at a time until you get water to come out of the brew basket. If you haven't done any internal damage it should be ready to brew a pot of coffee inabout 20 minutes.

The A10 has a semi-sealed tank that keeps +1 pot of water heated and ready to brew. Pouring in a full pot of cold water will fill the top tray and allow a slow trickle of cold water into the top which forces hot water to over flow into the brew basket. This continues until all the cold water drains into the heater tank. So the brew is matched volume per volume. UNLESS the tank was empty or not filled prior to brewing. Follow the brewing instructions from Bunn (on line for *FREE* download at Bunn.com)
* If it leaks (from the bottom) only when you pour in water. Then your pouring it too fast and over flowing the fill tray. slowdown, watch the level in the tray. do not fill past the lid.
* If it leaks just sitting (not brewing) then there is a hole in the tank. Call for service.
* If it leaks after filling the tray half way. then the top of the tank has a leak, loose, cracked, or missing gasket. There is quite a few gaskets on the lid. Call for service.
* Final; Leaks are always bad around electrical equip. Best to unplug and call for service to be safe.
Aloha, ukeboy57

PS. Check your using the correct size decanter for this brewer. If it's a 10 cup brewer then make sure all the decanters in the office is also 10 cup. Pouring a 12 cup pot into brewer will have 12 cups of coffee come out (over flowing the 10 cup pot.) Note that not all decanters are made the same size. Other brands may be different. Test by filling a pot with water (from faucet) then pouring directly into pot in question. It should match and not under fill nor over fill.

Plug in brewer and turn on vacation switch on side

of brewer. Allow 15 minutes for water to heat to proper

temperature. This is a quote from bunns troubleshooting page. Also it should be under warranty in which case you could go to www.bunn.com and call their service line and either have them send a tech to look at it or have you send it off for warranty repair. Hope this helps.

www.midstatebeverage.com  

This brewer has a 2 1/2 pot reservoir. You should NOT plug in the brewer before the reservoir has been topped off. Pour 3 pots (one at a time, every minute or so) through the screen with a pot under the filter basket. Wait until the water flows from the basket and only then is it safe to plug in the brewer. The reservoir holds HOT water until you are ready to brew and then, by pouring in a pot of cold water, you will be able to brew.

No setup to it. If it is a pourover, add 3 pots of waterto the pour in funnel at the top. keep a pot under the brew funnel, The tank will hold about 2 and a half pots of water. From then on what you pour in is what will come out. If you have an automatic model, it would require a water line hook up and after 2 cycles water will frow from the brew funnel after that, let the machine heat up for 20 minutes and brew coffee like you would at home.

contact Bunn directly for help.

http://www.bunnomatic.com/retail/service/contact.html

• Brews 3.8 to 7.5 gallons (14.4 to 28.4 litres) of perfect coffee per hour.
• Large 200 oz. (5.9 litres) tank provides back-to-back brewing capacity.
• Adjusts automatically to varying water pressure.
• For high lime areas, BrewLOGIC® technology calculates flow rate and adjusts brew time to maintain consistent pot levels.
• BrewWIZARD® technology incorporates simplified programming with a LCD display.
• Quickerinstall saves up to 30 minutes. Pot level, cold brew lock-out and tanktemperature set easily from advanced touch pad on front of machine.
• Electronic diagnostics and built in tank drain make service easier.
• Ensures coffee brew quality with cold brew lock out capability.
• Brew into decanters.
• SplashGard® funnel deflects hot liquids away from the hand.
• Coffee extraction controlled with pre-infusion or pulse brew and digital temperature control.
• Automatic warmer shut-off.

You may not have enough water in the tank.
Follow these steps

1. With the coffee pot unplugged, fill your resevoir/tank until water begins pouring out of your sprayhead and brew basket.
2. Wait for the water to finish dripping then plug in your Bunn.
3. Let your Bunn warm up for at least 8 minutes.
4. Run a test cycle with clean water, remembering to use the water pitcher provided for this purpose, while leaving your empty pot on the burner beneath the brew basket.
5. If your cycle completed, and your coffee pot is filled to the desired level you are ready to make coffee.

Remember that these Bunn models have no water filter installed, so, the cleaner the water the better tasting the coffee.

It sounds like there is some build up in the brew line, find the nearest bunn dealer and get a delimming spring, then remove the shower and run spring through brew line.

What's happening is that it isn't leaking, it's boiling over. You need to turn down the thermostat under the top lid. Also, before you brew coffee, add water to the tank and let it pour into an empty pot. Once it stops brewing, let it heat up for a few minutes then make your pot of coffee.