I purchased model B017BDQHE6 from your Amazon store almost a year ago. I’ve finally gotten to installing it and followed the wiring diagram to do so. This meter is wired in my RV with the shunt between the negative terminal of the battery and the D.C. Distribution panel of the RV. The meter works fine until I turn on my 3000W inverter (with no AC load). At that point the meter goes to flashing all ‘8’ and the backlight blinks. If I turn off the Inverter, normal operation resumes. Any ideas on what I should do next to resolve this issue?