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Post by papaof2 on Aug 4, 2023 7:19:43 GMT -6
It pays to check the "little things". I had noticed a small drop in the incoming voltage on the active charge controller for the solar backup system. Not a big deal because it's running from an AC-operated power supply so my not-reliable back does not have the chore of cleaning solar panels, but there should be NO change in that voltage unless there is a problem with grid power. On checking closer, the knurled knob on the positive output of the power supply isn't fully tight. At most, this connection would be passing 4 amps so it doesn't require tools for an adequately tight connection but it wasn't finger tight. Why? probably not snugged adequately the last time I did any checking of the power supply and the multi-farad filter on its output - if we lose AC power, the charge controller sees useful incoming voltage for a minute or two and short hits on the AC power aren't even noticed.
Turned the power supply off, reached in and tightened the knurled knob less than a half turn and it's now snug. And I got started on that journey because the image I could read remotely from the laptop that monitors the solar system had a little glitch in the display that had no explanation ;-)
That remote display now has a new glitch in the opposite direction - but I know why that glitch is there ;-)
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