We have a Jenn Air Electric Range. After cooking dinner I turned fan off
immediately as cannot stand the noise.
In the morning my partner heard fan running. It would not switch off so
he unplugged.
I know I turned the switch off. How could it start up on its own.

--

On 1/17/2016 11:44 AM, Jean wrote:
We have a Jenn Air Electric Range. After cooking dinner I turned fan off
immediately as cannot stand the noise.
In the morning my partner heard fan running. It would not switch off so
he unplugged.
I know I turned the switch off. How could it start up on its own.

Do you know if it is an *electronic* switch? Or, a mechanical one?

[Hint: if it is a sexxy "touch activated" thing, it is electronic;
if it has some heavy *feel* to it -- like an old fashioned light
switch -- it is mechanical. More or less.]

An electronic switch isn't really controlling anything. Instead,
it simply CONVEYS YOUR WISHES to something else (controller) that
actually does the switching. So, if that "something" decides,
rightly or wrongly, to turn the fan on (perhaps because it senses
the range is still hot and it wants to cool it?), then it can.

A mechanical switch can't (usually) flip from the off POSITION
to the on POSITION without some external force activating it.

On Sun, 17 Jan 2016 18:44:01 +0000, Jean wrote:

We have a Jenn Air Electric Range. After cooking dinner I turned fan off
immediately as cannot stand the noise.
In the morning my partner heard fan running. It would not switch off so
he unplugged.

You have one of those down-draft exhaust fans? Kind of useless.

Don. www.donwiss.com (e-mail link at home page bottom).

On Sun, 17 Jan 2016 18:44:01 +0000, Jean
wrote:

We have a Jenn Air Electric Range. After cooking dinner I turned fan off
immediately as cannot stand the noise.
In the morning my partner heard fan running. It would not switch off so
he unplugged.
I know I turned the switch off. How could it start up on its own.

Does the stove have a temperature sensor? If so, it may be defective.
Some vent fans will go on when the temperature gets above a certain
level.

Could water or grease gotten in to do something?

On 01/17/2016 12:51 PM, Don Y wrote:

[snip]

An electronic switch isn't really controlling anything. Instead,
it simply CONVEYS YOUR WISHES to something else (controller) that
actually does the switching. So, if that "something" decides,
rightly or wrongly, to turn the fan on (perhaps because it senses
the range is still hot and it wants to cool it?), then it can.

A mechanical switch can't (usually) flip from the off POSITION
to the on POSITION without some external force activating it.

What appears to be a mechanical switch may just be a controller input
too. The controller can do what it wants, regardless of the switch
position. This is like the "power" switches on most electronic equipment.

--
Mark Lloyd
http://notstupid.us/

"Happiness is the only good. The time to be happy is now, The place to
be happy is here." --R.G. Ingersoll

On 1/17/16 1:44 PM, Jean wrote:
We have a Jenn Air Electric Range. After cooking dinner I turned fan off
immediately as cannot stand the noise.
In the morning my partner heard fan running. It would not switch off so
he unplugged.
I know I turned the switch off. How could it start up on its own.


I had a real old Jenn Air downdraft electric range and some of the
heating coils would spontaneously come on with the controller
switch/dial was in the OFF position. Turns out some liquid (water,
cleaning spray, and/or boil-over)) had gotten under the dial and down
into the switch and shorted it out.

Ended up replacing all the switches (including the one for the fan) and
rewiring the 120v circuits in oven. End of problem. I'd still have it
but replaced all appliances during a kitchen redo.

--
Want to close wage gap? Step one: Change your major from Gender Studies
or Feminist Dance Therapy to Electrical Engineering.
- @CHSommers

On 1/18/2016 7:44 AM, Mark Lloyd wrote:
On 01/17/2016 12:51 PM, Don Y wrote:

[snip]

An electronic switch isn't really controlling anything. Instead,
it simply CONVEYS YOUR WISHES to something else (controller) that
actually does the switching. So, if that "something" decides,
rightly or wrongly, to turn the fan on (perhaps because it senses
the range is still hot and it wants to cool it?), then it can.

A mechanical switch can't (usually) flip from the off POSITION
to the on POSITION without some external force activating it.

What appears to be a mechanical switch may just be a controller input too. The

Of course! But, the trend seems to be for sexxy/flat/touch contrtols,
nowadays. In that case, almost definitely NOT actually controlling the
fan.

Mechanical switches cost a bit more. And, you'd not include a "hefty"
switch (like a toggle) if you just wanted to signal a controller
(a mechanical pushbutton would be more in line)

controller can do what it wants, regardless of the switch position. This is
like the "power" switches on most electronic equipment.