I had three undervoltage faults too. Two out of warranty, one in. Took the reading 4/0 and cleaned it. Back to normal. I know about the worksheet, takes forever. I submitted it as is. Hopefully they will accept it. Will experiment with the email. The exercise is one thing, faults are another.
All the under voltage alarms I got were the generator failing to start because no cold weather kit was installed.
When I checked the run log, the generator stalled out several times before the undervoltage alarm. That's not a 0/4 issue, it's an engine problem.