Question about Patton Electric U2-20 Box Fan

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Shuting down\off after several minutes of operation.

This is a patton u2-20 fan, 2 yrs old, normally operated in the med spd position, 2 wks agom, the fan started shuttin off, and after several minutes it will start to ope rate no normally, I realize that this is the results of the therma sw working, is there anything tht can be done except replacing the motor\fan thanks Wp

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  • Anonymous Jun 29, 2008

    how can i fix this shut off issue as i have the same

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You can also check that the back of the motor is clean of debris. i have the same issue but i recently cleaned the back of some cat hair, not too much and it seemed to be ok now. i never had this problem until about 6 yrs after i bought the fan so i know it isn't a heat issue or sensor control issue or it would have done that from the start

Posted on Jun 29, 2008

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This thermal switch may be of the type where it is saving power by turning off motor when air is sufficiently cooled. You obviously want the air cooler, so you can place a wire across the two terminals of that switch to defeat the power save. If the switch is to prevent motor over-heating, however, then you cannot jumper that switch. Do this test: open back to locate switch. if switch is located directly on motor housing, then that switch is cannot be jumpered out. if switch is located in air stream, then it may be possible to jumper it out. Try the jumper and observe for many operations of fan useage to ensure jumper is safe. Ensure no bare wires or electric terminals exposed when done.

Posted on Sep 04, 2007

  • Marty marty Sep 04, 2007

    added: if the motor is really not over-heating, then the switch is over-sensitive and it may be replaced...what is the current draw on fan's nameplate? If 5 amps or less, the switch may also be jumpered out for continuous operation, after ensuring that motor is not getting hot ever.

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