Will not keep coffee hot.

This is really a home style VPR brewer (but looks nicer)
if you listen to their video (link below) they mention it has a pre-heated tank of water already in the brewer. This means the brewer needs to be pre-filled with a full pot of water and pre-heated prior to using the brewer. Unplugging this unit won't be a problem UNLESS it was emptied of tank water and not refilled when powered up.
* The unit will try and heat up the tank of water but if empty then just air which overheats the unit then blows the thermal fuse. Call for service.
* The warmer is still working but it's not hot enough to brew frequently as the warmer may take up to an hour to get the tank hot enough to brew or it may not get hot at all if it's own thermal fuse blew too.
* Final; call for service to be safe.
Aloha, ukboy57
https://www.amazon.com/BUNN-Velocity-10-Cup-Coffee-Brewer/dp/B00EAQJCWW/ref=sr_1_1?ie=UTF8&qid=1516431654&sr=8-1&keywords=bunn+nhs+velocity

Saw a coffee warmer at WALLMART in Montr?al Canada, look it up where you live.

No warmer plate llight:
Usually means bad switch. Bunn Part no. is 20316.0001. Replacement available at link below.
Bunn Home On Off Warmer Control Switch Lighted

Note differences in switch wiring in photo below between old and new style switches.


Coffee not hot:
Make sure "Vacation Switch" is in OFF position.

If you will call customer service at 800-352-2866 with the model and date code, we will be happy to assist you with this issue.

The CBC-1600 comes with a thermal carafe. therefore, it doesn't rely on a heater plate to keep the coffee warm.

Your coil may be shorting out on your warmer.
Try using the upper warmer and see if the same thing happens. If not, a cheap solution is to swap burners and order a new one . If both overheat, you have too much voltage going to your bunn.

This coffee maker has a hot water reservoir that heats and stores hot water so it can brew coffee faster. Once you fill the reservoir by pouring a potful of cold water into the top, you can turn on the switch at the side of the unit and in about 10 minutes the water in the reservoir will be hot. I usually leave this switch turned on to keep the water in the reservoir hot. The front switch turns on the pot warmer at the front of the unit, so it should be turned off unless you are making coffee or keeping a pot warm. To make a fresh pot, put a filter and ground coffee in the removable filter basket, slide the basket into the unit, place an empty carafe on the warming burner and using a separate container pour fresh water into the filler at the top of the unit. The fresh water displaces the hot water in the reservoir and voila, the coffee carafe starts to fill. The amount of fresh water you added is the amount of coffee you will end up with, less a little bit that might have evaporated if you only make coffee every morning or less often. Most units have a plunger under the filler lid that keeps the fresh water from going in to the hot water reservoir until you close the lid, so close it after pouring in the water. Also, turn off the front switch if the carafe is getting low or empty, as it can get hot enough to crack the carafe. If you're not going to be using the coffee maker for several days, turn off the side switch or unplug the unit to save energy and reduce evaporation from the reservoir. I love mine. It makes great coffee and is much quicker than the drip type.

COFFEE PREPARATION PROCEDURES
1) Place filter into brew basket.
2) Put the proper amount of coffee into the filter.
3) Slide the brew basket into holder.
4) Place empty decanter on warmer located directly under the brew basket and turn corresponding warmer switch ON.
5) Pour decanter of fresh water through pour-in opening at top of brewer.
6) Hot water will be delivered through the sprayhead. This distributes the hot water evenly over the coffee bed within the brew basket. The coffee will drain from brew basket into the container below.
7) Red light indicates warmer is ON.
8) Before brewing next pot, remove brew basket from brew rails and dump filter into waste basket.

Please rate this a fixya

Sounds like something is miswired from the factory. Note that the tank heater switch on most home brewer models also acts as the "master" power switch. If the tank heater switch is not on, the warmer switch will not work, either - this is normal. Under normal conditions, the tank heater (or vacation switch) should always remain on, except if you are leaving on vacation.

Try connecting two elements in series. See if this keeps it hot enough. (One switch controlling both burners.) See if another brand of burner will fit in the hole. Check to see if the wattage is lower.