loebas73 Posted May 3 Share Posted May 3 Hi, I'm on FW1.3.0 with 2 correctly cabled PRO 1PM switches. Both of them do not display any watts/voltage when switched on. Does anybody experienced the same issue lately please? Any ideas on how to solve this? thank you Quote Link to comment Share on other sites More sharing options...
Administrators Olsche Posted May 3 Administrators Share Posted May 3 Can you please provide us a picture of the wiring, have you tried power cycling? Wasn't there a problem with the previous firmware? Quote Link to comment Share on other sites More sharing options...
loebas73 Posted May 3 Author Share Posted May 3 (edited) Here a quick view when I tested... Now there are on a rail... Power cycling done, factory reset done... remove and re-add to shelly app done... FW is now 1.3.0-ga3fdd3d Edited May 3 by loebas73 Quote Link to comment Share on other sites More sharing options...
Members thgoebel Posted May 3 Members Share Posted May 3 (edited) Let us assume live and neutral wires are occasionally swapped at the „blue“ terminals of the Shelly pro 1PM: In this case, the Shelly would not detect a voltage which leads to zero power value… Addendum: It is very likely that live and neutral are swapped: Edited May 3 by thgoebel 1 Quote Link to comment Share on other sites More sharing options...
ByteBard494F54 Posted May 3 Share Posted May 3 That is possible do you have a phase tester or multimeter to check. Quote Link to comment Share on other sites More sharing options...
loebas73 Posted May 3 Author Share Posted May 3 Swapping N and L worked! Sorry for the stupid question and thank you for the help! 1 Quote Link to comment Share on other sites More sharing options...
Integrators Heinz Posted May 3 Integrators Share Posted May 3 No such thing as a stupid question 🙂. it's a common issue with the cables being swapped happens to the best of us. Just make a note on the cable that they are swapped. Quote Link to comment Share on other sites More sharing options...
Members thgoebel Posted May 3 Members Share Posted May 3 (edited) To be honest: The cables are not swapped actually but now attached as intended. It was a wrong connection which caused the erroneous measurements… Edited May 3 by thgoebel Quote Link to comment Share on other sites More sharing options...
Integrators Heinz Posted May 3 Integrators Share Posted May 3 Ahh ok well at least the issue is solved. Quote Link to comment Share on other sites More sharing options...
Marcocm Posted May 8 Share Posted May 8 (edited) Hi all 🙃 I am also having the same problem. I can control my Shelly, but my power consumption in always 0W. i attach my wiring. I don’t have any switch connected. This is to control a resistance of a solar panel. i already tried with a led lamp (5w), and it still measures 0W can anyone help me? Edited May 8 by Marcocm Quote Link to comment Share on other sites More sharing options...
Members thgoebel Posted May 8 Members Share Posted May 8 Please double check your sketch: It seems not to be consistent, cause the automatic circuit breaker on the left will not work correctly whilst connected at neutral potential. Quote Link to comment Share on other sites More sharing options...
Marcocm Posted May 8 Share Posted May 8 Thanks by the heads up. i was doing the schema on mobile, and it is not easy 😅 Quote Link to comment Share on other sites More sharing options...
Members thgoebel Posted May 8 Members Share Posted May 8 Wiring of the Shelly looks correct. Live and neutral are not interchanged, which would cause the zero power value. Hence I would assume a faulty device. Would propose to reject the device. 1 Quote Link to comment Share on other sites More sharing options...
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