Think your sensor wires are disconnected? Here's how to check.
A screw terminal block secures all sensor wires (both sets of Watermark sensor wires and one pair of wires for the temperature sensor) to the circuit board (see picture below).
To check if your sensors are plugged in, gently tug at the wires connected to the screw terminal in the sensor electronics box. If they are secure within the screw terminal as you tug on them, your sensors are plugged in.
If the wires disconnect, simply insert the wire back into the screw terminal. You will feel a small click when it is secured.