I installed the above mentioned inverter charger
about 6 months ago in a major electrical
Since I live aboard and have some things, primarily the refrigerator
and some lights, running on 12 volts the automatic charging/standby cycle happens regularly. I also have some computers
running off the inverter
which does a pass through while on shore power
This has all worked incredibly well. The inverter switches so quickly between shore power
and inverting that I can unplug from shore power and the computers
Yesterday I was installing some LED christmas
lights outside. When I came in the inverter was making a pulsating low frequency buzzing sound. It also seemed to be charging
at 15+ volts, which implies that the charger
got automatically switched to equalize mode. Subsequent experiments with actually going through the equalize on purpose didn't make any difference. After equalizing it would go through the 3 stages of charging
and when it was time to switch to standby mode it would buzz and increase the charging voltage to 15+ volts again. It doesn't make the noise
under any other conditions.
Xantrex's customer support hadn't heard of this before. I'm wondering if anyone else out there has.
Thanks in advance,