Why does my fan not run when I Turn on the thermostat?
This problem can happen in both heating and cooling mode. Rule out bad fan motor or no power to fan. First, by noting that the fan will run when you set the thermostat to FAN ON we know that the fan has power and the fan motor starts and runs just fine. So the problem is elsewhere.
What should the temperature be for an attic fan?
Attic fans that operate with a thermostat usually automatically turn on the fan based on the temperature that the homeowner sets. Manufacturers and contractors suggest that you set the temperature setting between 100 and 110 degrees F. Do you really need an attic fan? In most cases, attic fans are used to cool the attic.
When to replace the motor on an attic fan?
Usually, fan motors last between 10-15 years and when the fan is approaching its replacement age, it is due for a motor replacement. What should I set my attic fan thermostat to? Attic fans that operate with a thermostat usually automatically turn on the fan based on the temperature that the homeowner sets.
What should I do if my attic fan is not working?
Here are some tips to help you reset a circuit breaker or fix a blown fuse. If the fuse and circuit breakers are fine and none of the outlets are working, it could be a problem that is beyond the fan and you will have to call a professional to inspect it. If your fan has a thermostat, turn the fan on and off bypassing the thermostat.
What does the thermostat tell a HVAC fan to turn on?
The thermostat is what tells these separate systems to work together. In normal operation, when your thermostat is set to “auto,” it will tell the blower fan plus the heating or cooling components to turn on and off at the same time when the desired temperature is reached.
Can a faulty thermostat cause a fan to run?
Faulty Thermostat: If both the fan and either the cooling or heating system are running unexpectedly, you may have a faulty thermostat. Broken Relay Switch or Short Circuit: If only the fan is running, there may be a broken relay switch preventing the settings you enter on the thermostat from being sent to the fan.
How do you connect an exhaust fan to a thermostat?
Connect the white wire coming from the exhaust fan to the black wire on the thermostat. Use wire nuts to make these connections. Connect the ground wire (green) to the terminal screw in the electrical box.
Can a reverse thermostat be used for an exhaust fan?
This set-up is especially useful in greenhouses. The thermostat used in this instance, though, isn’t your typical thermostat. It’s a reverse thermostat, which works by turning on the exhaust fan at a certain temperature then turning it off after the temperature has cooled adequately.