testing a SOLAR 24v to 12v equalizer

audiocontr · Post by **audiocontr** » Sat Jun 19, 2010 10:07 am

I'm suspicious of my SOLAR unit. My battery is dieing too often now from my 12v tap where the solar unit should be equalizing the load. Any idea how to test one of these?

loyalp · Post by **loyalp** » Sat Jun 19, 2010 11:47 pm

Mine tested out with a gravitational acceleration of 9.8m/s2 when I pitched it in the trash can.

Erik712m · Post by **Erik712m** » Sun Jun 20, 2010 7:59 pm

I didn't have any luck with mine as well

David Dunn · Post by **David Dunn** » Mon Jun 21, 2010 12:17 am

Did you return the negative side of the charge controller tor the batteries, or to a body ground?
The charger needs to be isolated from the body, and the controller wired directly to the batteries, or it won't charge when the battery switch is off, and can be burned out if it isn't isolated from the body ground,

audiocontr · Post by **audiocontr** » Mon Jun 21, 2010 2:14 pm

All connections to the batteries. It is possible that the unit's case could have touched ground inside the battery box i guess. Wont that short it?

audiocontr · Post by **audiocontr** » Mon Jun 21, 2010 6:04 pm

To answer my own questions...

The case is isolated. Contact of ground will not hurt the unit.

to test, disconnect white wire. Check voltage at white wire. It should be half of current 24v power. White wire had no voltage at all.

There are 2 fuses inside the unit, 25a and 15. Each was blown. Replacements popped immediately. Sending the unit back to Solar for repair.

I'm wondering if the unit should be disconnected prior to any jump starting? I'm not sure what caused it in the first place.