Why does my fan not run at full speed when I turn the knob all the way up?

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• Variable speed 1 or variable speed 2 fan switches on, runs at full speed, and then turns off. Keeps cycling.

  Problem Variable speed 1 or variable speed 2 fan switches on, runs at full speed, and then turns off. Keeps cycling. Possible Cause The hysteresis is not high enough. The outside temperature is rising and falling quickly. This happens most often in ...

• Variable speed 1 or variable speed 2 fan switches on, runs at full speed, and then turns off. Keeps cycling.

  Problem Variable speed 1 or variable speed 2 fan switches on, runs at full speed, and then turns off. Keeps cycling. Possible Cause The hysteresis is not high enough. The outside temperature is rising and falling quickly. This happens most often in ...

• Variable speed 1 or variable speed 2 fan switches on, runs at full speed, and then turns off. Keeps cycling.

  Problem Variable speed 1 or variable speed 2 fan switches on, runs at full speed, and then turns off. Keeps cycling. Possible Cause The hysteresis is not high enough. The outside temperature is rising and falling quickly. This happens most often in ...

• Why does my fan growl when I turn the knob all the way down?

  If you want the fan to idle you need to increase the Low Limit trimmer. If you want the fan to be off you need to decrease the Low Limit trimmer. For more information, see Limits for 120/230 VAC fans in the user manual.

• Troubleshooting - Variable speed 1 or variable speed 2 fan switches on, runs at full speed, and then turns off. Keeps cycling.

  Problem Variable speed 1 or variable speed 2 fan switches on, runs at full speed, and then turns off. Keeps cycling. Possible Cause Hysteresis not high enough. Outside temperature rising and falling quickly. Happens most often in the spring and fall. ...