I have what I believe is an error in the Service-Manual-MultiPlus-3k-120V-(firmware-xxxx4xx)-EN.pdf (Version 7 date 8/3/2020) on pages 11-12.
This is regarding DIP switch ds2 in step 2 controlling the output AC voltage of either 115 or 120. Page 11 says ds2=off =120V. The examples on p12 give contradictory info. When I tried ds2=off I had 115VAC output and ds2=on produced 120V.
I'm currently having trouble getting full charge current output. I haven't tried setting ds3,4 in Step 1 to the inverse to see if I get better output, but I'm wondering if the documentation is correct there.
Thanks
Chris