Bunn Kitchen Appliances - Others - Recent Questions, Troubleshooting & Support

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?

If your Bunn Ultra 2 slush machine's compressor is turning on and off immediately, not allowing the product to freeze, there could be a few possible causes. Here are a few things you can check:

1. Check the thermostat: Make sure that the thermostat is set to the correct temperature and that it is functioning properly. A faulty thermostat can prevent the compressor from turning on.
2. Check the compressor relay: The compressor relay is responsible for turning the compressor on and off. If the relay is faulty, the compressor may not stay running. You can check the relay by using a multimeter to test for continuity across the relay's terminals.
3. Check the compressor motor: The compressor motor could be faulty and not able to start or stay running. You can check the motor by using a multimeter to test the winding resistance.
4. Check the condenser coils: The condenser coils could be dirty or clogged with dust, which can cause the compressor to overheat and shut off. Clean the condenser coils with a brush or compressed air to remove any dust or debris.
5. Check the compressor's oil level: If the oil level is low, the compressor could be damaged.
6. Check the overload protector: The overload protector is a safety device that is designed to protect the compressor from damage caused by excessive current. If the overload protector has tripped, the compressor will not start or stay running.

It's worth noting that a compressor not staying running could also be caused by a more complex issue

It sounds like you have already identified the issue with your slushy machine, which is that one of the auger drive shafts is not functioning properly. Based on the information you provided, it seems that the problem may be related to the length of the pin on the auger drive shaft. As for a potential solution, it's possible that replacing the auger drive shaft with one that has a properly sized pin may fix the issue. Alternatively, you could try to adjust the length of the pin on the existing auger drive shaft, but this may be difficult to do without the proper tools and expertise. As for your suggestion of using a jumper to take the voltage from one solenoid and apply it to the other, this may not be a good idea. Solenoids are designed to control the flow of electrical current, and bypassing one in this way could potentially cause problems with the overall functioning of the slushy machine. It's always best to follow the manufacturer's instructions and use the machine as intended. In summary, it may be best to replace the faulty auger drive shaft with a new one, or seek the help of a professional to properly adjust the existing one. It's generally not recommended to bypass or alter the functioning of the solenoids in your slushy machine.

The switch has failed and is closed circuit all the time (on all the time). Switched are either single pole or double pole and both types can end up with the contacts fused together but it happens more with single pole switches. Remove the switch and test it with a multimeter. Normally when you flip the switch, it feels 'odd', but not always.

low on coolant probably

check with bunn i have no idea what is making it put out black

The Bunn Ultra-2 originally came with several circuit boards, including the main control board and a small memory board also known as the "TIC Clock". This little board, screwed in directly behind the main control board and has a small round metal circuit on it that looks like a watch battery, but it is not -- the metal "Can" contains the timing and memory functions for the main control board.There is also a small battery inside the "can", which maintains the memory when power is removed from the machine. Over time, this battery will fail and you will see an error message on your LCD readout that says ":Bad TIC Clock". In the past you could just buy a new TIC Board from Bunn and install it and you'd be back on your way again. But, Bunn no longer sells the TIC Board and instead Bunn wants you to purchase a new Main Circuit Board that has the memory and timing functions built right on the new Main Board. The list price is over $200.You can now purchase a TIC Board Rehabilitation kit from the Margarita Guys for under $50 which will replace the failed circuitry on the small TIC Board. Go to ebay and search "Bunn TIC Board" and you will see the kit available there. It includes all the necessary tools, 9 pages of detailed instructions and annotated photos, free Priority Shipping, and free phone access to their Bunn trained and certified Journeyman Technicians for any help you may need. This should be the perfect answer to resolve your Bad TIC Clock message and the working errors that come with it.

https://www.bunn.com/bunnserve/trainingmobile/Manuals/ultra/Technical/machine_comp.pdf determines that the tic is no longer communicating or it is disconnected

hi, from my experience 1. the main board/ecu may have a faulty solenoid. there are two solenoids on the board, 1 for each side. if the left auger works, then it's the right solenoid. its close to im[possible to replace the solenoids unless u have good connections to china!! 2. the right motor auger in the back might have a fault or bad electrical connection, very rare. exchange the electrical connections to the motor from left to right and vice versa. then you know what is faulty. 3. good luck 4. you can order mainboards/ecu's at bunn.com. they r reasonable priced

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.