Pro 4PM fried

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  • Hi

    I Installed the pro 4pm and connected 1 TL light to it on output, and 1 push button on the input signal. I need to hold the push button manually to keep it working, but for the rest works fine. (So no cabling issue to me)

    Now the big issue: when the app is installed, the moment I push the ‘on’ button in the app, it fries my pro4 pm instantly. Is there no safety which can prevent me from doing wrong things?

    Can you confirm the possible solution (to avoid to fry another one):

    - setting the app button on another mode, which mode best?

    - installing a contactor after every Shelly output and the TL light (or other application) to avoid backfiring?

    Or do you see other scenarios?
    Many thanks for your help!