progressive industries shore power constant flashing 8s
azbullhunter - I split your post into this new topic since it did not appear to be related to mkc1962's inverter/charger issue.
Are you asking about a Progressive EMS? Are all readout positions "8" and flashing or are you getting a E-8 error?
It's toast. Warranty Claim Form | progressiveind (https://www.progressiveindustries.net/warranty-claim-form)
You might take a look at it, I've repaired mine twice. Both time failed solder joints, last time was on capacitors. So if you're not under warranty might check it out.