com port

I'd like some advice on troubleshooting what appears to be a com port issue, but I'm not sure. The system is a Pentair Intellitouch i9+3 (installed around 2015). Local and remote access has worked flawlessly since day one, but recently stopped. Our first troubleshooting step was to check the...

Hi guys I'm looking for a 9 volt on a Lx3400 Compool panel - I believe that would be the voltage of a com port - any ideas ? The current com port is being used for the control panel - i need an additional one. Link to the manual...