Question about Westinghouse Trevor 78786 Ceiling Fan

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The fan won't turn off when I pull the chain - it continually runs on the low speed

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The pull switch has almost certainly failed. The motors and control circuits are almost bulletproof on most models. The fact that your fan continues to run confirms it's not a problem with a worn motor. The switch is cheap and readily available from places like Radio Shack and Maplin, just take along the old one and the staff will supply you an equivalent model.

There are hundreds of different ceiling fan models and so I'm not familiar with yours, but they're all constructed and operate virtually the same way. You'll probably need to remove a cover to replace the switch which will usually be held in place by two set screws. Make absolutely sure that the fan is completely isolated from mains electricity before working on it. If you have any doubts about your ability to carry out the repair safely then call an electrician or a knowledgeable relative/friend. Replacing the switch takes just a few minutes but there will be a minimum labour charge. The electrician is also likely to have to go and buy the spare part and return to fit it as it's not the kind of switch which is likely to be in his or her spares box.

Posted on May 29, 2010

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If the fan has a pull chain then push the Hi button and then pull the chain until it's on high. Then don't pull the chain! If that's not your problem then check the capacitor in the fan.

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I have a 3 way fan light switch but wires don't match the colors on my hamton bay fan what wires go where i have a black wire and a brown wire and a grey wire on the switch in the hamton bay i bought...


It takes 2 testers.
699b7e0.jpg regular tester

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Continuity tester has battery and light bulb.

Use regular tester to find Hot wire that feeds old-switch.
Remove old-switch from fan
Strip back wires
Separate wires so they can be tested.
Turn on power.
Test each wire to bare copper wire -or- to green wire -or- to metal part of fan
One of the fan wires will light up tester.
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Mark Hot wire.
Mark which color wire on old-switch went to the hot wire.

Use continuity tester on old-switch.
You know which wire is hot-on-old-switch
Pull chain and test hot-on-old-switch to both of the other wires.
When tester lights up, mark this wire.
Pull chain again and test hot-on-old-switch to both of the other wires.
When tester lights up, mark this wire.
At some point when you pull the chain, the tester will light up both the other wires.
This is the high speed.

Use continuity tester on new-switch.
Repeat the test for old-switch.
Identify which wire will be the Hot wire by process of elimination.
Mark this wire.
Identify high-speed wire.
Pull chain again, and tester lights up on medium speed.
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If you need more help, add a comment, and I will answer

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1 Answer

Need a replacement, where do I get one?


If I understand correctly you have a 3-speed fan.
And you need a 3-speed replacement pull-chain-type switch

Lowes carries 3 speed fan switches in the light fixture department.
These switches have multiple wires.
At any given time, there is one-and-only-one wire that connects to power from wall switch.
Lets call this the Power wire.
As you pull the chain, the power passes through the switch and goes to one-and-only-one of the other wires.
The other wires connect to windings in the motor.
The different motor windings control fan speed.

The key to replacing the switch is recording where each wire went before you disconnect old switch.
Once you know which of these wires is the Power wire, then you can test other wires with a continuity tester.
You also know the pull-chain sequence is OFF - HIGH - Medium - Low
Mark wires in fan and mark wires on old switch.
Pull out old switch.
Use regular electrical tester to find which wire in the fan is the power wire (separate wires, turn on power and test each wire to metal part of fan)
Now test the switch wires.
The switch is out of the fan.
You marked the wires so you know which wire is power wire.
Put the continuity tester on the power wire.
Test power wire to each of the other wires.
Click the switch and test to each of the other wires. Mark which wire lights up continuity tester.
Click the switch and test again. Mark which wire lights up continuity tester.
Click again, until each wire is marked in the sequence.
When you click the switch and no wire lights up, then that is the Switch OFF position.
Do the same test on the new pull-chain switch.
Connect the wires to match your testing.
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1 Answer

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1 Answer

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Is there a light switch control or just straight power to the fan? They do sell "Fan" controll switches just like a regular dimmer, but for a fan. If there is just straight power u would still be able to install a remote that could lessen the speed. Even if it is just pull chains. the remote would have three speeds and if u kept the pull chain on low, maybe the low remote speed could work.

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1 Answer

Hampton Bay 54 In. 5-Blade with remote control at wall.


1. Set the remote to run the fan on high.
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