This has happened twice. The first time, I took the fireplace back to the sotre thinking it was defective. Label states auto shutoff- yes but- the outlet and wire brown and burnt. Second one purchased and used-auto shut off but same thing. I have to replace the outlet - and- this is a different outlet I used for the second time at this. Is there something that can be done at the electric box? Its not the fireplace that has the issue, so need to know how to make something "right" so I can use it again. Thanks, I don't want to burn my house down. Overall, are these things safe?