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MPPT 100/20 FW: 1.54. After switching to FLOAT the current and voltage go up and down

Dear Community,

for years I never hat that problem with my 75/15.

Now, I have a new 100/20 with the actual FW 1.54 and that occurs:

After switching to FLOAT, the current and voltage go up and down.

It normalizes for a short period of low PV voltage around 15:00 when it went back to bulk mode.

Does anyone can help how to avoid that. Is the FW buggy?





MPPT - Solar Charge Controller
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