[dvldoc]

The blue wire should read 0 volts unless the set point is reached. When exposed to heavy magnets the controllers can have the microcontroller erased, It happens sometimes in shipping and we have to send out a new unit. This could be what happed if your getting a solid yellow light, The controller does not know what to do with the voltage because no code on the chip.

Let us know if anything changes and we'll send you out a new one ASAP. You don't have to disconnect anything but the wires on the controller.