Your stove may smell like burning plastic for a number of reasons, including
The chemicals used during the manufacturing process of the system are burning off
The stove is being exposed to high heat for the first couple of times
Zip-ties were used to secure inserts during transit, and they may not have been removed
Your stove is experiencing an electrical issue
Let's Get It Fixed!
HomeX virtual experts will assess your issue (for free!) and can resolve simple problems.