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I don't know of one but I also don't check their site.
I do know that the lower power circuit board can fail and it seems it's very hard to get a replacement part since the pandemic.
You can always wire around it and use a PID controller to control your smoker and have a 10x better smoker than what masterbuilt makes brand new.
The MES body and construction is fantastic. The electornics and electrical components are bleh. The rewire is simple.
Let us know if this is something you may need to consider because in my mind the best MES is a rewired one with a PID controller :D