Invalid returned power values

    • Autor

    Hello,

    i just installed a Shelly 3EM to track my head pump power consumption. It seems to be working fine, BUT there are some invalid returned values:

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    The clamps are connected to the wires after the 3-phase fuse which goes directly and only to heat pump. Are the wires to close together for this to work correctly?

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    Thanks

    • Autor

    Hi all,

    I think I found the problem (and solved it) - an invalid phase sequence. There are three black wires coming into the main breaker - from there regular brown, black and gray wires are used for the wiring of the heat pump - and there were not checked and connected to any 'color standard'. Since I don't have a tester for phase sequence I just tried switching coils until the numbers seemed fine :)