I don't understand what the different jumper positions do on the PCB.

[cherubfish pair]

I moved it from the original setting and I don't think it's working right.

[cherubfish pair]

Whoops I forgot to say this is for the osmolator.

[rvitko]

A nano osmolator or full size? On the full size the jumpers only set the alarm (off, on for too high or too high and too low), on the nano they set the safety timer, either to 1.8 minutes or 3, this is how long the pump can run continuously before the unit shuts down as a safety.

[cherubfish pair]

It is a full size osmolator. How many watts does it run?

[rvitko]

With the pump on it uses 1W.