What symptoms indicate this harness needs replacement

Universal Compatibility: Seamlessly replaces multiple part numbers including P282-0311

the 0036047 is the designated replacement thermostatic element and assembly for the Illinois Series G

This product may contain materials regulated under California Proposition 65

Indeeco M7131A116299U Heater 326058-758 What symptoms indicate this harnessThe Indeeco M7131A116299U is a heavy duty industrial immersion heater designed for high capacity thermal transfer in demanding commercial and industrial environments. This unit is engineered to deliver 12kW of heating power and operates on a 480V 3 phase electrical configuration, making it a reliable choice for large scale water heating, sanitation systems, and industrial process tanks. Built with a rugged construction that withstands continuous duty