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  • Bunn Ultra 2 freezing

    Posted by Mclaren on April 25, 2022 at 7:12 pm

    Anyone know what would cause this? If I set the left side to ice and the right side off, both sides will freeze . The right will freeze to solid ice even though it’s off. If I set the right side to ice and the left side off only the right will freeze like it should, thanks

    fixbear replied 3 weeks, 3 days ago 2 Members · 2 Replies
  • 2 Replies
  • fixbear

    April 26, 2022 at 3:13 pm

    That sounds like a temp Sensor. You can test the machine by opening the left panel, And you should see the two plugs that connect to the main harness. One has pink and white wires for the right sensor. The other one is gray and white. With the machine on, you can probe the plug from the back with it connected and read a DC voltage. Normal will be about 1.2 volts with the drum at 71 Degrees F. 2.6 VDC at 32F. Zero if the board is bad and 5VDC if the sensor is open.

  • fixbear

    April 26, 2022 at 3:34 pm

    My mistake, Gray and white are the torque sensor. I meant to say Tan and white. Alternately you can just ohm the probes. But that doesn't tell you if the board and harness is ok.

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