Colddainhell, Welcome to the forum sorry to hear your having a problem with your MTS250S and getting a cracked case also. I have a MTS250S also and did have the code 802 also with a little help from the Everlast team I did get it fixed I love the MTS250S, hope it is something simple.
Everlast PowerTig 325EXT (Canada)
Everlast Power I Mig 250 (Canada)
Everlast PowerPlasma 80S (Canada)
Everlast PowerCool W300 (Canada)
Everlast PowerMTS 250S Fitted with a 30A Spoolgun(Canada)
Miller Dynasty 400 wireless(Canada)
Millermatic 252 plus 30A Spoolgun(Canada)