I have a BUNN VPS that leaks water when we make coffee. I have removed the top of the maker and watched, but I can not see the leak.

1. Replace gasket for tank basin.
2. Check holes in sprayhead.
3. Use deliming spring to clean brew tube.

VPR 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

VPR 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

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.

Either the thermostat is turned up to high or damaged.

Sounds like the thermostat is set too high or is on the way out. Check setting, turn all the way on and then back off 1/4 turn.

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.

Is this a lot of water, or just a small amount.

As the unit sits over time and runs heating cycles, it may have some vapor come out of the vents. That will cool and collect around the unit.

try turning the unit off for the weekends. If you still have water around the unit, then it may have a leak in the tank.

Sounds like a leaking water pipe from the water source, unless you have a over temp heater and this results in steam and dripping.

You should keep the unit full of water all the time it's plugged in, as if it is low on water, the heating element will burn out. A Bunn VPS brewer holds about 2 -64 oz pots of water in it's resevoir.