What brand do you use? Currently there are only 4-core sensors (called probes in our jargon, 4-core and 7-core are different, so they cannot be used universally and cannot be replaced if desired). to replace them you have to replace the whole thing. There is no difference in the display. The current one is better than the previous one. After installation, you can usually use hot water without having to worry. I don't know if your previous one was automatic, meaning it automatically filled the water at a scheduled time, automatic heating?
The 7-core sensor of the solar water heater is broken. The manufacturer said that it will no longer
Introduction The 7-core sensor of the solar water heater is broken. The manufacturer said that it will no longer be able to buy a 7-core sensor, so it must be replaced by the screen. It costs 480 yuan for a set. it needs to be replaced by a 4 core sensor?