| Dave I would say this: Few bible days ago, I worked in Semiconductor Manufacturing Equipment Service. We would send our Fluke DVMs, recorders and other measuring tools off to a lab to get calibrated so when we measured something, we knew what we were measuring. I’m not saying your DVM is out of calibration, it seems like the inverter’s DVM is the issue. Having said that, I assume that if an inverter is measuring something like volts or amps (usually via a shunt therefore Volts), it also needs to be calibrated. Now, the question is can a common person like you or me be allowed to edit those values on the Sol-Ark. Outback has their Vbat cal page for charge controllers and trim pots for the FNDC and Schneider has their XW Config Tool with calibration procedures. I think Sol-Ark will send a motherboard to install on the old Master??? I suggest keep calling them and reference your ticket # and see if you can get a resolution. I would also measure along the entire path of both inverter battery cables, especially at high load looking for any voltage drops along the way. You might find a loose bolt or wonky lug crimp. See if you can both sides of the inverter DC breaker. Good luck! Thank you, Maverick Maverick Brown Off-Grid Solar Commander since 2006 Maverick Solar Enterprises, Inc. • Solar Commander Remote Power • SunFlow Systems Cathodic Protection [email protected] 512-460-9825 On May 28, 2025, at 2:32 PM, Dave Tedeyan via RE-wrenches <[email protected]> wrote:
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