I installed sonoff 4ch pro to control an irrigation system at home, that works with four 24v AC - solenoid valves. So this way I can set the timer for this system and control it by wifi.
I followed the instructions and set it to self locking mode, and at the beginning it was working properly.
But the problem is that there is one channel that selfs activate all the time, so I had to disconnect that relay otherwise my garden was flooded!!!!
I need the four channels working properly, what can I do to solve this problem??