Light Turning off...

revhtree · Feb 23, 2008

Any ideas??

One of my MH lamps will cut off every once in a while for no reason. It's ran on a reefkeeper2 and is set to turn off if the tank hits 82.5, but this is not why it's turning off.

surfn · Feb 23, 2008

plug it into a new socket w/ a different timer (not on the reefkeeper). this will make sure its not the reefkeeper turning it off.

if it keeps turning off after you do this, may be something wrong with the ballast or bulb...

basically just systematically eliminate the possibilities 1 by 1.

revhtree · Feb 23, 2008

Yea I am sure it's not the RK..

Dang it! LOL!

ficklefins · Feb 23, 2008

I would guess the ballast is the issue.

msman825 · Feb 23, 2008

I had a 4 month old set of hammy awhile back and one of them would go out, then when it cooled off would come back on

revhtree · Feb 23, 2008

Yea that seems to be whats happening!

smcooler · Feb 24, 2008

it could be the lamp, if the arc tube gets damaged or overdriven with the wrong ballast could cause the lamp to fail,HTH

stan

NapoliNewJersey · Feb 24, 2008

Rev what fixture/lighting brand do you have?

I had the same thing happen and i had to change the fuses in my ballast every week until one day it just stayed on and I haven't changed the fuse since.

My was a current outer orbit pro.

revhtree · Feb 24, 2008

These are 250w ARO Elec Ballast with 250w 14k Hamiltons.

surfn · Feb 24, 2008

my guess would be either the ballast or bulb is over heating

hexedagain · Feb 24, 2008

If you have an extra bulb, try it first. It is either you bulb or ballast causing this. Do you have two bulb/ballasts running? If so, try running the problem bulb on the opposite ballast. That should tell you if it is bulb or ballast right away.
Also, if this is a retro make sure all of your wire connections are good.