My Lightpad is glowing red and no longer controls the light.
The Lightpad's fuse is blown and the unit must be replaced.
-Wiring the Lightpad without flipping off the circuit breaker.
-A short somewhere in the electrical circuit.
-Wires coming loose from fasteners and making contact in the electrical box.
There are many other possible causes that are rare and likely impossible to diagnose without a licensed electrician.