[marcse_ms]

My GEProfile electric cooktop started showing a F143 fault a week ago and since the smallest/simmer burner back/right has shown 'hot surface' (when cool for a day). Tonight, on it's own now the entire cooktop displays F142 if left w/circuit breaker on... so it's now off. What's going on with it, and what's the ballpark to repair this integrated unit?
Also, based on model#JP938S0C1SS and serial#HD724702Q is there anyway i can tell how old it is and whether it's covered under warranty. I have no papers for it... bought the house recently w/a variety of GE Stainless appliances, but don't know when the kitchen was upgraded with them.
Any pointers in the right direction would be appreciated. I'm somewhat surprised i can't find a pointer to the set of fault codes somewhere online. regards.