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Why does fan not work on low and medium setting but does on high?
Wiki User
∙ 14y ago
That is a typical sign that the blower resistor has gone faulty
Wiki User
∙ 14y ago
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What causes a ceiling fan to go from three working speeds to only one?
One of your capacitors in the fan is not operating. I had the same problem. If you still have the high speed working on the fan there is a work around. If it is the high speed capacitor that is gone, take the fan apart and use one of the other capacitors to replace it. Use one that is closest to the rating of the high speed capacitor. In the high speed run the fan will not be using the internal fan capacitors for the lower speeds, so cap the wires off with wire nuts that come from the fan motor to the capacitors. Move the connections around until you get the high speed position to work. This work around requires that there is a wall switch that operates the fan. A Lutron model number DVFSQ-F will work very well with the fan. There is a toggle on the right side of the switch that selects the speed, low, medium and high speed. Depending on the position of the slider switch, that is the speed the fan will start in. The new fan switch is wired just like an ordinary light switch.
My 2004 Jeep Grand Cherokee AC only works on high does anybody know why the AC won't work on low or medium?
Assuming that by "high," "low," and "medium" you are referring to HVAC blower fan speed and that this happens with heat as well as with AC: Replace the blower resistor. It's no good.
