Wyze Thermostat smoked itself

Hello! Ordered and installed 2 Wyze thermostats December 2020. My house has separate units for upstairs and downstairs and neither have C wires so I used the included C wire adapter.

A few weeks ago I came home to both thermostats dead. Then, the one on my downstairs unit appears to have overloaded and shorted itself out, as you can see in the above pic.

I was out of town so perhaps there was an electrical surge or something while I was away. The transformer for the downstairs unit was also blown.

After tearing the things down, it looks like the blown component was a fuse on the back side. The upstairs unit looks unharmed, but still does not work.

Did I wire these things up wrong or something? I followed the step by step directions in the app closely and as far as I know I did everything correctly. Both thermostats were installed identically.

https: //imgur.com/a/JQb2nbU

https ://imgur.com/a/1dBqMQg

https ://imgur.com/a/4uhNPfk

Any help or information is appreciated. Thank you!

Update: I had to break some of the hyperlinks because I am only allowed one photo upload and two links per post.

1 Like

@russwiththebus
I am sorry something like this has happened. Have you contacted support and if you haven’t please do and let me have the ticket number so we can look into this.

4 Likes

Hi
It looks like a surge went beyond what the fuse can take. We upgraded our fuse tolerance level in the 2nd batch of production. Please contact our support team for a replacement.
Thanks

3 Likes

Hey there, I have contacted support and have a ticket number: 2183676

Thanks for replying, I kept my old thermostats so I was able to switch back to them to keep my system up and running.

3 Likes

Thanks! I have contacted support and have a ticket number now: 2183676

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@russwiththebus
I have sent your ticket number up to the team, was support able to help you out?

2 Likes

Thanks. They asked for some additional information so I sent it over to them.

2 Likes