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Fan control reversed

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Fan control reversed Duck 05-17-2007
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Posted by Duck on May 17, 2007, 9:11 pm
I have a problem with a variable fan control being reversed. Off is
off... but that's the only thing that's normal. The low setting
results with the fan at max speed and the high setting causes the fan
to run at it's lowest speed. I've tried three different fan controls.


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Posted by mm on May 18, 2007, 12:46 am

>I have a problem with a variable fan control being reversed. Off is
>off... but that's the only thing that's normal. The low setting
>results with the fan at max speed and the high setting causes the fan
>to run at it's lowest speed.

So isn't that good enough?

>I've tried three different fan controls.


Posted by John Grabowski on May 18, 2007, 7:06 am

> I have a problem with a variable fan control being reversed. Off is
> off... but that's the only thing that's normal. The low setting
> results with the fan at max speed and the high setting causes the fan
> to run at it's lowest speed. I've tried three different fan controls.
>

With some the first "On" speed is high and then medium, then low. Is there
a label indicating the speeds or are you just presuming that low should be
first?


Posted by Duck on May 18, 2007, 7:45 am
> With some the first "On" speed is high and then medium, then low. Is there
> a label indicating the speeds or are you just presuming that low should be
> first?

I've tried one that is labeled 0, 1, 2, 3, 4.

0 = off
1 = high
2 = slower
3 = slower still
4 = slowest

I also tried a rotary type where as I rotate it clockwise out of the
off position, it goes to high speed. As I continue to rotate it
further, the fan runs slower.

This runs contrary to every variable speed adjustment I've every seen
for fans. I'm worried that there may me another issue (bad wiring, fan
problem, etc.).


Posted by Rich on May 18, 2007, 8:05 am
Duck wrote:
>> With some the first "On" speed is high and then medium, then low.
>> Is there a label indicating the speeds or are you just presuming
>> that low should be first?
>
> I've tried one that is labeled 0, 1, 2, 3, 4.
>
> 0 = off
> 1 = high
> 2 = slower
> 3 = slower still
> 4 = slowest
>
> I also tried a rotary type where as I rotate it clockwise out of the
> off position, it goes to high speed. As I continue to rotate it
> further, the fan runs slower.
>
> This runs contrary to every variable speed adjustment I've every seen
> for fans. I'm worried that there may me another issue (bad wiring, fan
> problem, etc.).


This is exactly how it should be for a fan. It is easier on the motor to
start in high then be turned down lower if desired. Also most people when
they reach for the fan they are warm and want to move a lot of air as soon
as possible.

Rich




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