Unplug the unit after testing, disconnect the ribbon again, and turn it upside down again.
Tie down that new cable, so it does not wander.
You may find that the 3-way switches seem to be getting too much pressure from the covering grill, if so, you can trim away one rib of grill on each side to protect the switches.
Experiment with the 3-way setting for the fans. Medium seems to work just fine, but if you really do not like noise, start with low. At this point, the pump and third fan are beginning to make more noise overall.
If you have your temperature setting to "LO", you may need to set the fans higher to maintain the maximum dissipation of heat.
If you have sudden hot flashes which need immediate cooling, you may need the fans on high, although the thermal mass of the whole system should moderate those heat swings.
Users who select a higher target temperature (especially one above the ambient), will probably find they do not need the higher speeds.
