Re: [DML] Re: FV buzzing

["Tom" <tomciodmc@xxxxxxxxxxxxxx>]

Phil

Nothing to worry about. This could be a normal behavior. Especially if your 
battery was a little low or your fans are a bit old and draw a lot of 
current. When you remove the load of the fans from the electrical system it 
causes a spike that apparently in your case is enough to trigger the RPM 
relay. Check the voltage in the system when the fans are running. If it gets 
really low you might want to check the fans to make sure they are not 
drawing too much current. If they are ok then check the battery and of 
course all the ground connections (at the fans, at the frame, near the 
battery at the frame).

Hope this helps you out a bit

Tom Niemczewski
jamesik@xxxxx
VIN 6149 (in Poland!)
Save the dream so you can live the dream...



----- Original Message ----- 
From: "Toby Peterson"


> Phil - In looking at the wiring diagram, the only thing that comes
> to mind is that the fan motors have capacitors to ground for noise
> suppression (probably), and perhaps the capacitors are bleeding off
> a charge into ground that is back-feeding into the FV when power is
> removed from the main fan power feed.
> --- In dmcnews@xxxxxxxxxxxxxxx, Phil Priestley wrote:
>> Yesterday I jumped the otterstad to confirm that it was dead and
> sure enough the fans roared to life. I noticed that every time  I
>> "unjumped" the otterstad leads the frequency valve started buzzing
> for a second or two. Is this normal behavior?
>> Phil Priestley





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