Inverter 2000 B239 Yellow ProSine Internal error 3073

Why is my inverter 2000 B239 yellow prosine showing internal error 3073?

The inverter needs to be Rebooted. Disconnect battery terminals for 20 minutes. Reconnect and plug back in to charge. If problem persists after disconnected RMA unit or advise out of warranty. If problem persists, contact Newcastle tech support. http://www.newcastlesys.com/submit-trouble-ticket