this post was submitted on 20 Nov 2023
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Home Automation
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Home automation is the residential extension of building automation.
It is automation of the home, housework or household activity.
Home automation may include centralized control of lighting, HVAC (heating, ventilation and air conditioning), appliances, security locks of gates and doors and other systems, to provide improved convenience, comfort, energy efficiency and security.
Warning: Working with electricity can result in injury, property damage, or even death if it is not done properly. Please keep this in mind while assisting others. If you are not sure about what you are doing, hire a licensed professional.
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I would bet that the thermostat in your water heater is faulty, and has a hysteresis value that is too strong.
The heater is supposed to switch on when the water temperature goes below a certain value, and switch back off when the temperature goes above a certain value. Those temperatures should be close enough, so the temperature is almost constant; but not too close, so the heater does not switch on and off constantly.
In your heater, those two values are way too far apart. When the heater is idle, it allows the water to get warm. When someone takes a shower, the temperature decreases, then it finally switches the heater on. And it does not switch the heater off until the water is hot.