I’ve just installed a Shelly 1 PM to my electric water heater/boiler, with a probe.
I test it the other day, and everything was working ok; it would keep ON until the internal thermostat “sensed” that the right temperature had been reached.
Then I integrated it with HA.
That’s when the problems started.
Note: I’ve not made any automation for that device.
For some reason homeassistant.turn_off keeps turning off the device in a matter of minutes after I manually (card-button) turned it ON.
I checked everything: turning it ON from the (Shelly) app/desktop, the same behaviour occurred; I restarted the Shelly device - still the same; I plug off the cables and put then back without the Shelly - stays on, so no problem with the boiler/thermostat.
Then it occurred to me, after putting everything back together, to try and disable the Shelly 1 PM from HA, and voilá - no problem what so ever; it’s still ON.
Any ideas?