Review on 🌡️ Honeywell 5-2 Day Programmable Thermostat for Home by Christian Poojary

I have changed the thermostat before. But it's just as easy. This Honeywell thermostat controls both the gas stove and the air conditioner in my house, a bit more complicated. I'm having trouble understanding the schematic as my 40 year old thermostat has some wires that are misaligned. this new one. That's my problem, not the new thermostat's problem. I just need to take the time to learn about this device, to understand what each wire does to make the right connection. For now I'm giving 4 stars, will update when installed. UPDATE after installation: I have read manual page 4 and 5, it shows exactly how I connected my old thermostat and how I should connect this new one. There are 5 wires: 2 for 24VAC hot and common, one for heat, one for cooling and one for fan. Quite easy. I even tested these wires with a voltmeter to make sure that W, G and Y are turned on by the thermostat depending on the setting. I noticed that this thermostat does not support common 24V AC, so only 4 wires need to be connected. And the device requires 2 AAA batteries to operate. I then realized that having the fan set to AUTO means the thermostat isn't controlling the fan, and left it to the controller in the oven to turn the fan on/off (please correct me if I'm wrong here). I tested two Honeywell thermostats and the G-wire (fan controller) only turns on (shows 24 volts) when I turn the fan ON. When I set it to AUTO, that wire stays at 0 volts even though the W wire reads 24 volts (heater on). This thermostat is missing a feature that most might overlook. As a software developer who has written temperature code, I quickly noticed this weakness. Let me describe how this thermostat controls the heating: Let's say I set the temperature to 68 degrees, the house temperature was 60, the thermostat turns on the heating until the house temperature reaches 68 (expected). After a while (5 to 10 minutes) the temperature at home drops to 67 (expected), this heater is turned on again, the house temperature rises to 68. These events repeat themselves over and over again, which means that the stove is turned on and quite often out. A good design ensures a small temperature difference, e.g. B. 3. At a distance of 3 degrees, the script above works as follows: Set the temperature to 68 degrees, the house temperature was 60, the thermostat turns on the heating until the house temperature reaches 68 (expected). It takes quite a while (maybe 30 minutes) for the house temperature to drop to 65°C, the heating is turned on again until the house temperature rises to 68°C. That way, the oven (and fan) turns on and off less often, which means less irritation. , although it takes longer to run when it's on. I am very happy to buy a thermostat with this function. Please reply as a comment if any of you know.