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« Last post by Joel Ashley on October 18, 2026, 02:24:53 AM »
Thanks, David. You bettered me on the research!
“ I would jump the old one with a booster cable momentarily and observe whether or not you get a large spark or ark.
This will tell you if the inverter has a significant draw or short.” Eric, I did get a decent spark that way, so I presume there is an internal short inside the inverter, and I’ll have to go through the fun task on my back on the slideout in the bay, getting the thing off of the ceiling. I used an automotive floor jack last time, positioned with a square of plywood on top of its round shoe under the inverter, while I removed the four mounting bolts. It’s clumsy flat on your back, crammed in there with incomplete view of the bolts, and the high-swing jack handle with limited clearance. But hey, whatever works to get that 40 lb thing safely off the ceiling and back. Otherwise it would be pretty darned hard (and unsafe) stuck in there alone trying to hold the unit up with one hand while removing the last bolt nut with the other.
Rather than taking it to the repair shop as I did before, and since they said they can’t get parts anymore anyway, I’ll open it up and see if there’s something obvious I can fix myself. My guess is a squirrel warmed his behind on it last winter and “effluent” found its way inside; even though as I recall there aren’t many openings on top of it, some likely got inside, contaminating a board.
I never got around to making a hardware cloth screen to surround the inverter’s top, as it would need micro-designing around multiple wire and rail infrastructure, but now wish I had. I just hoped the expanding anti-rodent foam would plug off access - another failed procedure.
-Joel
Tried adding a photo, clipped to 254kb then 156kb, but as usual the site refused it 😤 .