spd 115 on 12v battery bank

[mahendra]

hi . i recently installed an spd 115 on my 12v battery bank ,however after installation the leds did not light up.SO i decided to do a test to make sure the unit was fine so i hooked up a 36v battery system from some old batteries i had lying around and guess what they lighted up(of course i switched the red and black line to check this).just for redundancy i tested it on my two arrays since they are be low 115vdc and  it lighted up as well.MIDNITE CAN YOU PLEASE ADVISE BECAUSE THE UNIT SEEMS TO BE FINE.

[mahendra]

AFTER SOME MONITORING I HAVE NOTICED THAT I WOULD BLINK OCCASIONALLY.DON'T KNOW IF THAT HELPS.

[Halfcrazy]

The issue is there is no reference between Negative and Ground. For instance if there was a Classic in the system and you installed the Ground fault jumper that would make a reference and the LED would light up. Basically the ground is floating and not part of the system electrically.

Ryan

[mahendra]

ok so i should turn on ground fault then ?

[mahendra]

thanks my jumper was off on the classics don't know how i missed it solved the problem thanks a lot.