Tune 5017

Is your float stuck in a raised position? Short in a wire? Have you power cycled it? That's about the best I can come up with.
 
Possibilities, assuming the only light on is red too high.

1) The float is upside down.

2) The float was serviced (disassembled) and the bobber reinstalled upside down on the post which reverses the switching function.

3) The float or controller is being influenced by a magnetic field, it is a magnetic switch, if installed incorrectly in the magnet holder (wrong mount), a magnet is nearby, or the controller is receiving magnetic interference that could be a cause.

4) The float switch is broken, either broken wires, it is old and worn, or the magnet ring in the "bobber" is broken (visibly looks like a C instead of a washer). (This is very rare, I can count all the floats I have ever had to replace on my fingers)
 
Do you know how old it is? If it is newer than 2011 I would definitely send it in as it is likely a simple issue we can repair, older than that and it is a tough call as the board was different and repair is more difficult and the cause could be damage to the board. I will say that even if I cannot fix it, I would discount a replacement so I think generally you will come out ahead by sending it in.
 
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