Take control of your Solar Powered Attic Fan
Power your fan after dark
The addition of the Solar Controller with Dual Mode Technology will enable your Solar Powered Attic Fan to run after sunset or when there is no light available from the sun.
When there is no sunlight available to power the fan and the Solar Controller has the optional house power connection enabled, the Solar Controller will cycle house electricity for 8 minutes every half-hour in order to power the fan. This will allow your attic temperature to continue to drop after sunset and help remove the hot, stagnant air that can build up on those warm summer evenings.
A perfect replacement for electric fans
The Solar Controller allows you to power your fan with free, abundant solar power when you need it most while also giving you the option to run your fan after sunset using only a small amount of house electricity—all without the noise and operating expense of an outdated, traditional, electric attic fan.
Real-time status updates
The remote control readout on the Solar Controller sends a radio signal through your walls and ceiling to give you a real-time status update on fan operation to let you know if your fan is running and if the power source is from the solar panel or the house electricity.
There is no more questioning if your fan is running! This patent-pending, industry-first advancement will give you the peace-of-mind that your fan is functioning and your attic is being ventilated.
Attic temperature and humidity display
The remote control unit will also display the current attic temperature and relative humidity. Simply press the STATUS button and the information is transmitted from the Solar Controller to your hand-held remote.
An intelligent device
The Solar Controller monitors both temperature and humidity; optimizing your fan's operation for maximum performance in all weather conditions.
The Solar Controller intelligently limits the amount of electricity used to power the fan, so it is a perfect alternative to traditional, electric-powered vents. With the built-in temperature and humidity sensors, the Solar Controller can monitor attic conditions and utilize solar power or house electricity to optimize the run-time of the fan by removing excessive heat and moisture.
Won't this add significant cost to my electric bill?
No! The Solar Controller is uniquely optimized to run the least amount of time possible; using the least amount of electricity possible. Since the ambient temperature continues to drop after sunset, the fan only needs to run in short intervals. And since it uses a DC powered motor, the amount of actual energy drain is minimal. The additional electricity required will cost less than $5 per year.
Monitors the attic temperature and will turn on the fan when the temperature reaches 80 degrees and will turn off the fan when the temperature dips below 77 degrees. This allows the fan to only run when it is necessary to vent hot air from the attic space, extending the life of the motor. The unit comes with the temperature switch disengaged. It is recommended that the temperature switch remain disengaged to enable year-round venting. However, you may engage the temperature switch if desired.
Too much humidity in the attic can cause condensation which can lead to the growth of mold and mildew. The built-in humidistat monitors the attic humidity and will turn the fan on if the attic air reaches 75% relative humidity and will turn it off at 65% relative humidity.
Call 1-877-50-USSUN to find an installer near you
If you choose not to install the product yourself, professional installation may be available in your area. Please contact U.S. Sunlight at 1-866-446-0966 if you would like more information on installers in your area.
U. S. Sunlight Corp and the retailer do not represent, warrant or endorse the quality or reliability of any service, information about any goods of services, or other materials provided or obtained by you from Contractors referenced by U.S. Sunlight Corp.
Do I have to connect house electricity to the Solar Controller?
No. The Solar Controller will be powered by the solar panel when sunlight is available. When sunlight is not available and with no connection to house electricity, the Solar Controller will not function. Attic temperature and humidity will not be monitored.
How can I find out the current status of the fan and attic temperature?
Click the "Status" button on the remote, to display the following information:
- Attic Temperature
- Attic Humidity
- Fan status - ON, OFF, or Intermittent (during a house electricity cycle)
Note that the above information will only be available when Solar Controller is powered by sunlight or house electricity. The remote readout will not work when there is no power to the Solar Controller.
I don't see information displayed on the remote when I hit the status button?
Check the following:
- The Solar Controller is connected to the AC adapter (house power)
- If the Solar Controller is not connected to AC adapter (house power) is there solar power available?
- The remote control has good batteries (2 x "AAA")
- RF channel on the Solar Controller matches the channel set on the remote control.
- If there items do not work then call US Sunlight at 866-446-0966.
Does my remote continue to receive information from the fan?
No, the remote will only gather information when the status switch is pressed and there is power going to the control box. If the control box is connected to house power then the remote will display the current condition of the Solar Attic Fan when the status button is pressed. If the fan is not connected to the house power and there is no sun powering the Solar Attic Fan then the remote will display nothing when the status button is pressed.
The remote will power off after 20 seconds to conserve power, to redisplay the current status information, simply press the Status button to refresh the display.
How can I change the attic temperature unit (e.g., °C to °F)?
You may select the desired unit on the Solar Controller itself.
How can I disable the Thermo Switch?
The Thermo Switch is located at the back of the remote control. The Thermo Switch is disabled at the factory, this is the default setting and recommended for most applications. When the Thermo Switch is disabled then the fan will run anytime there is power available.
Can I disable the humidistat?
No. The humidistat is by default ON at all times to monitor the attic humidity, and turns the fan on when relative humidity reaches 75%. The fan will be turned off when relative humidity drops below 65%. If the Thermal Switch is enabled the fan will only turn on when the temperature is higher than 80 degrees and/or the humidity is higher than 75%. If you disable the Thermal Switch the fan will run anytime there is available power.
Won't using house power add significant cost to my electric bill?
No! The Solar Controller is uniquely optimized to run the least amount of time possible using the least amount of electricity possible. Since the ambient temperature is continually dropping after sunset, the fan only needs to run in short intervals and since it uses a DC powered motor, the amount of actual energy drain is minimal. The additional electricity required will cost less than $5 per year.
Is house electricity required to power the Solar Controller unit even if it's not being used to power the fan?
No! The Solar Controller will work when solar is available and will monitor the humidity and temperature of the attic as well as the status of the fan. In order to run the fan after the sun goes down you will need to connect the control box to house power.
Is the Solar Controller difficult to install?
No, it is as simple as connecting two wires and plugging the control box into a power source. For more information please click call 866-446-0966, or download the installation instructions.
Is additional wiring required to install the Solar Controller?
In order to connect the Solar Controller to house power you will need an electrical outlet within 8 feet of the solar attic fan. If you decide not to connect the Solar Controller to house power or decide to connect to house power at a later date then everything you need to connect the unit is in the package.
Does the Solar Controller work for both the roof mounted Solar Powered Attic Fan and the Solar Powered All Purpose Ventilator?
Yes, The Solar Controller has been optimized to work with any U.S. Sunlight products. We do not guarantee the performance if connected to any products manufactured by others.