what is the difference between auto and fan on a thermostat?
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The fan setting controls your AC's blower; A fan inside your system that helps distribute air throughout your home. AUTO means the fan turns on “automatically” ONLY when your system is heating or cooling your air. When the thermostat reaches your temperature setting, the system, including the blower fan, shuts off.
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To put it in simple words, a car thermostat works by responding to the changes in the temperature of the engine coolant. If the engine coolant is cold, then the thermostat maintains its closed position. Once the engine coolant is hot enough, then the thermostat opens to allow the coolant to go to the radiator.
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To summarise, the difference between an AC fan and EC fan is: An AC fan has an alternating current and is very expensive to control without making it hum or buzz. An EC fan is basically a digital fan. It's a lot easier to control.
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Non-PWM fans can still have their speed adjusted by the mobo or a dedicated fan controller. PWM fans are more power efficient (although I can't imagine them saving you more than a few watts). I think a given PWM may have a lower minimum speed than an 'equivalent' non-PWM fan, but non-PWM fans can still run slow enough.
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The working of a fan is quite simple. it basically contains a single phase induction motor. The fan capacitor torques up the electric motor, allowing it to start and run. An electrical current reaches the motor and then enters coils of wire that are wrapped around a metal base.
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Fans can run on both AC as well as DC according to the circuitry used inside it. ... As our power sources are AC , so we have to convert a AC motor fan to DC to be able to use. DC fans consume 70% less power than the AC fans.
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AC motors are connected directly to the power source which provides the force required to rotate the motor of the fan. The DC motor uses the same AC power with a transformer that converts the power to DC. This decreases the amount of power required to operate the fan. ... DC fans use up to 70% less energy than an AC fan.
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Simple answer is that the fan only has to run while AC is running. Having fan running whatever minutes per hour helps with equalizing temperature throughout the house and you can set it to whatever you feel comfortable with.
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The fan only turns on when cooling or heating is required. If you are generally as comfortable in one room of your home as the next, you'll want to use the AUTO setting. The AC fan kicks in when needed and stops running when the job is done.
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Some older thermostats do indeed have three connections: 2 for switching and one (neutral feed)to power a heating resistor to act as an "anticipator". However if you are using two 2-port motorised valves, then you need the third wire to isolate the valves from each other.
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You set Timer on & Timer off, and every day, AC follows same routine, in this control, the set temperature is maintained. Sleep is random control, put it in sleep mode, and it'll turn itself off, after a set duration (say an hour or 2, 3, 4 …)
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The Difference Between AC Fans & DC Fans. The direct current fans, or DC fans, are powered with a potential of fixed value such as the voltage of a battery. ... In contrast, the alternating current fans, or AC fans, are powered with a changing voltage of positive and of equal negative value.
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The direct current fans, or DC fans, are powered with a potential of fixed value such as the voltage of a battery. In contrast, the alternating current fans, or AC fans, are powered with a changing voltage of positive and of equal negative value. ...
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An AC system is a closed system, and if there are no problems, coolant is not consumed by the vehicle, nor does it escape. Unless your auto's AC is in need of repair, there is no need to shut off the system. When there is not enough refrigerant in the AC, serious compressor damage may occur.
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A two-stage furnace has low and high stages of operation. During the low stage, the furnace uses as little energy as possible to heat your home. ... A variable-speed furnace contains a computerized blower motor chip that monitors the airflow inside your home to determine how much heat to generate and release.
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Higher SEER often means better comfort But a 2-stage air conditioner with a variable-speed fan can meet your cooling needs about 80% of the time with its lower setting, meaning it will run more often, but at a lower setting and without as many starts and stops. This has 2 benefits: Fewer hot/cold spots.
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If your house has central air conditioning, cool air probably flows through the same ducts that heat does and is regulated by the same thermostat. ... Air conditioners use electricity. Most home heating systems use gas or fuel oil; other systems use electricity.