Beiträge von Ajgor

Thanks a lot for your quick reply. It was very helpfully!

I did some more testing and in the end got another shelly 2.5 to compare. Unfortunatelly I have no test bench to test it properly with DC input, but:

With AC 230V input and no wires connected to any SW or O ports, I also get 130V between N and SW1 / SW2. Issue starts when I connect my wires to SW ports. It seems that 130V signal sent to SW is so weak that simple wire resistance is causing issues for it, as my SW wires are 7m long and having 3 wago connectors on each SW wire (7m distance from switch to shelly ). When I mount shelly just next to switch (SW wires are 10-15cm long), it behaves fine. As soon as SW wire is longer and having wago connector on it, no way, it just switches N-SW voltages to 160V/230V. I am guessing that SW signal sent by shelly is so weak it is disrupted with smallest wire / connector resistance.

When trying with new shelly I got - works fine from start with full 7m legth of SW wires. However voltages with SW wires connected are 80V and 110V AC.

Is there any specification telling how long SW wire can be and should I send my Shelly back to shop as defective?

Thanks.

Hi Shelly experts,

I am new here and trying to troubleshoot issues I have with my new Shelly 2.5.

It is sending constant signal to both SW ports.

When measuring voltage against null (N): SW1 has 220V, SW2 has 160V

When measuring between two SWs it is 60V.

When connecting them to double (1-0-2) signal switch, which I want to use with it to manage my roller shutters, only one direction works - when signal is sent to SW2 (160V) because obviously there is some voltage diff which it can notice.

Other signal is not registered by shelly at all.

Both output ports seem to be working fine, I am getting nice clean signal on both of them when using app, just getting no reaction when pressing signal switch.

Is it possible that it tries to switch on N signal somehow?

I tried both roller shutter and light modes, also few firmware versions.

Tried also with and without SW and Output wires boeing connected. Also with only 1 L input (Shelly 2.5 has two L inputs). Always the same result.

Also tested Input and SW of Shelly for short circuit (with multimiter buzzer) but no, no short circuit seems to be.

Shelly is really powering both SW inputs itself and with different voltage!

Any ideas what I might be doing wrong or I just got defective device?

Thanks for any info and help.

Best,

Igor