Black Thumbwheel

Black Thumbwheel

How do I turn the thumbwheel

Turn the wheel using your thumb and finger. Do not block the line of sight between the WallCast unit and the LED Sensor.

Turn the wheel until the number shown in the picture on this page is shown on the LED Sensor

The wheel won’t turn any further and the number is not 6

Check the correct number of spacers are fitted. Measure the thickness of your board with the supplied measurement scale. Use the table in the Install Guide to confirm the spacers required.

If this does not work then hold the LED Sensor away from the board and slowly move closer to the board toward the orange marker cross. If the numbers do not change then go to support.prometheanworld.com. You may need a new LED Sensor.

If the number does change as you move the sensor toward the board reduce the spacer size to the next size shown in the table in the Install Guide.

If this still does not help then go to support.prometheanworld.com. A new WallCast unit may be required.

I have rotated the thumbwheel all the way and the number has not changed

Make sure there are no high protrusions on the board such as magnets stuck to the board, cards, post it notes etc between the orange marker cross and the WallCast unit. If there are remove them. Note that nothing should be stuck to your board. Your board surface needs to be clean and free from items. See the Install Guide

If this does not solve your problem go to support.prometheanworld.com. A new LED Sensor or WallCast unit may be required.