20 Most Recent Bunn Margarita Machine Ultra 2 Slush Granita Maker Questions & Answers

Hmm, that's definitely a problem! From what I understand, the Bunn Ultra-2 slushy machine is supposed to freeze evenly on both sides. So if it's only freezing on one side, there could be a few different things going on. It could be an issue with the refrigerant level, the solenoid, or the optical sensors. Can you tell me a bit more about the symptoms of the problem? For example, is the side that's not freezing completely warm, or is it just not getting as cold as the other side?

It means your machine needs to have seals and bushings replaced. This maintenance should be performed twice per year to keep your Bunn Ultra 2 in working order. This is something you will need to call a technician in to do.

you will need to contact bunn for the master reset.

was it hot? the compressor may be overheated and went into shutdown until it cools. it's safety feature if the fan stops or if the airflow is blocked by too much dust. clean the filter, check the fan, and try again. if it's not hot, it's the transformer that powers the main circuit board.

the sensor board is in the back behind the motor cowlings. open one up and the board is in front of the motor. check the wire harness to it, and check to see that it is not damaged. there should be a red and a clear sensor sticking up from it.

it isn't oil, it's old, syrupy slushie mix and dust. the only oil in the machine is inside the hermetically sealed (cannot open) compressor. you have a front seal problem. the shaft seal in the front inside the evaporator (steel tube), and the cup-shaped seal between the auger and the evaporator. slush is getting inside the shaft tube and dripping through the inside rear of the machine. replace the seals, lube with a food-safe lube and refill.

upper case means it is still trying to slush. lower case means it has reached designated slush thickness

chances are the refrigerant solenoid valve for that side is bad. replace the coil

the words ultra, gourmet, and ice above the display are buttons

the words ultra, gourmet, and ice above the display are buttons.

clean the filter and condenser coils, leave at least 6 inches of space for it to breathe

the mix is too rich. add some water to each side. it freezes based on torque, not temp.

hold down the "gourmet" button above the display for 5 seconds to get into the menu. scroll through (gourmet button) until you get to "reset" and select yes.

What does the display say? the shaft has an optic sensor. if the shaft pins or the sensor board are broken, it'll say sensor error. if the torque springs are broken, replace the shaft.

Make sure it's on ice, not chill or off. clean the rear filter and make sure there is at least 6 inches of space behind the machine for it to breathe.

make sure it's on ice, not chill or off. clean the rear filter and make sure there is at least 6 inches of space behind the machine for it to breathe.