I like this idea of the IC pump on a switch or an aux. I have the Ripa Interchiller and here in the Midwest recently we had some nasty humidity and 80%+ dew point. Several rough starts. Normal weather since then and zero issues.
When it's that hot out shutting off the ac to warm the IC coolant sucks... Shutting the pump off wouldn't tho, unless a 5 minute drive with no flow would somehow affect the coolant in the interchiller, or throw a code of some sort...
Curious to know if it would work for those nasty sticky days