Ballast making alot of noise.

[whulkamania]

Hey,

I have a 400W HPS and when I was testing it out and I use MH option instead of HPS it makes a loud buzzing sound, Why is this?

 

[whulkamania]

Anybody???

 

[Xare]

Your using a MH bulb too right ?

 

[whulkamania]

No, HPS.

10 characters.

 

[Xare]

Well then there is your problem

You cant use a Conversion ballast with just one type of bulb.

You need both types of bulbs and switch them out when you switch the ballast from MH to HPS.

 

[whulkamania]

Oh, so if I use a MH bulb when the Ballast is on the MH setting it won't make that noise?

 

[Xare]

Yep thats the long and short of it.

Doing otherwise may even be dangerous.

 

[whulkamania]

Yep thats the long and short of it.

Doing otherwise may even be dangerous.

I thought so, thanks alot I gave you some rep.

 

[bubblegumgreen]

Well it will still have a small hum... But not as bad as when you are running teh wrong bulb..

 

[runsfromdacops]

the ballast will also make alot of noise when it first fires the bulb, once the bulb heats up it should go away for the most part.

 

[billdubz785]

there's really a switch? I don't have a switch

 

[whulkamania]

there's really a switch? I don't have a switch

Then I think you might have a digital ballast.

 

[willwork4weed]

wats the diff. between a digital and regular ballast??

 

[whulkamania]

wats the diff. between a digital and regular ballast??

The regular ones, you need to flip a switch but when it is digital it reconizes the bulb you are using.

That is all the information I know however there probaly is more to it that I do not know about.