The only way to know is to test it, or if you can open one to find the "zing ear" model to google.As a rule of thumb you should consider the following size ceiling fan depending on room size: The retail packaging doesn't say anything about which one it is. I bought styles 1 and 3 from Home Depot and Lowes, but I needed Style 2 for my application.They may all look similar, take 4 connections, and have the same wire labeling(L,1,2,3), but they vary in the switch behavior. There are several different switch styles.When the switch uses more than one capacitor, those selections are in parallel but still in series with the blue one that goes to the aux winding. The speed switch chooses which of the other capacitors to include in series with the blue one to the aux and which ones are added in parallel to the run winding.The highest speed is the one that does not include any other capacitors, so in this case the highest speed is achieved with the 3uF of the blue wire alone.One of the 3 capacitors (blue 3uF in this case) is always in circuit to the aux winding.Higher capacitance on the aux does seem to mean higher fan speed.I'm nearing the end of a ceiling fan capacitor rabbit hole, and this post was very helpful to me, but there are some details that I think future readers may benefit from. Should the correct wiring be as following? Since this will connect the line & 6♟ on high speed setting, and line, black and 3.5♟ on medium speed setting, the black and yellow wires appear to be swapped. yellow capacitor wire (6♟, 200V) goes to switch terminal 1.red capacitor wire (3.5♟, 200V) goes to switch terminal 3.blue capacitor wire (3♟, 350V) goes into motor housing.black capacitor wire connects to a reverse switch and switch terminal 2.Old schemeĪ simplified wiring scheme, showing how the switch connects to other components (other connections for those components are left out):Ĭapacitor (assumed to be correctly wired): The capacitor has component # E175257 and manufacturer logo:īoth the old and new switches go through the sequence of terminal connections shown in the wiring diagram above (e.g. 3-speed, 4-wire pull-chain switch with terminals L, 1, 2, 3. Is this correct for the general case? Below is what I have in particular would someone confirm whether the wiring scheme I propose is correct? Components This way, high speed bypasses the capacitor, medium uses a higher capacitance and low the lowest capacitance. Whatever the capacitor and fan manufacturer, I expect "hi" speed should connect the line/power and common wires, "med" the line/power and two of the capacitor wires (lower voltage, if not all equal), and "low" the line/power and the lower capacitor (and voltage) wire. From what I can tell, 3-speed fans should be wired something like what's shown in the following diagram: The switch was stuck "on" at low speed for years, so I couldn't check what speeds the fan ran at for each setting with the old switch (I'm hesitant to wire it incorrectly to test with the new switch). I couldn't find a wiring diagram for the specific fan (and capacitor, which has 4 wires) to confirm the correct wiring, but after examining how it was connected, I suspect the switch was wired incorrectly when installed. I'm replacing the fan switch in a Hampton Bay fan + light combo.
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