Jack_H

Well that didn't seem to make a blind bit of difference... DHW setpoint changed to 40 degrees and hysterisis set to 5 degrees. DHW heating cycle seemed to kick in around 40 degrees cylinder temp and went on to reheat to ~50 degrees. 🤷

Yeah, I'll give this a try and report back. Cheers

This is what I thought. My hysteresis is set to 10 degrees, however I can't see anything in the controller that looks like a differential stop for dhw...

I'm reading the temperature of the cylinder temperature sensor which is displayed in the controller and app - the sensor is halfway up the cylinder...

Hi @HughF, interested to understand how you run weather comp (fan mode = eco) but not for DHW? I have a CE-ET10, which uses a SPRSUN developed controller - settings look very similar to the Carel controller - the issue I have is, my DHW setpoint is set to 45 degrees, however the tank keeps being heated to ~50 degrees. I'm assuming it's using the weather comp setpoint, but can't quite get my head around how that works for DHW... Any advice greatly appreciated!