I have the warmup (under tile heating ) custom component setup in HA, I can set the temp override of the warmup devices fine.
I have a simple call service flow for the warm up device in node red, i get confirmation message back but the actual temp is not changing on the device.
Have you been able to make your WarmUp work with HomeAssistant? I’m having the same issue. Seems that it stopped working recently, probably due to the last update?