Yes, they plan on coming home. Hopefully they get to.I'm assuming an "open" referrs to a break somewhere in the heating element circuit--possibly a break in the element itself. After years of service, element wires can become corrupted and brittle--easily broken, or even burned out like a light bulb filament. Or there might be a break somewhere else in the circuit, a bad switch (thermostat), broken connection...
Hey, I've been wondering about your folks... any plans for them to come back?