Pro 4PM reboots

arvid carlander

Hi,

I have a Shelly pro 4pm that reboots roughly once per day (the uptime reported through the API restarts at 0). More than 100 other devices on the same power and WIFI work properly.

Firmware 20250924-062756/1.7.1-gd336f31

Web build id 250723134645-6d4afb10

Any suggestions on how to fix or debug (other than to replace it) ?

-Arvid

thgoebel

Shelly pro 4PM are prone to electromagnetic interference. If inductive load is switched with one or more of the contacts, snubbers should be installed in parallel to the load(s) or in parallel to the contacts (if installation at the load is difficult).