hi, anyone using a tmc v2 ATU. I need to get one. reliability?
I'm not a fan of 220v auto top-ups, so my advice stops here. If you run it the way I do then both float switches must be in the down position for the pump to start, therefore I have the second float switch slightly higher than the first, by about 3mm, that way it is always on, so when the first float switch kicks in the pump will come on, then if the first one fails, once the water level has risen to the second switch it will then rise and switch off the pump as a failsafe.Yeah then thats a serial connection. Pump n float switches 220v. Shocked