Like Bait guy above, ours used to control the Fantastic Fan in the bedroom, similar to the blue-to-red twist knob on the fan itself. We installed a new FF, and disconnected the old wall thermo. It's still there. Just doesn't do anything.
Linda Heuer, Past President, Spirit of Virginia Club
Greg Heuer, President, Spirit of Virginia Club
2011 31' Classic Ltd. - The Silver Otter III
2013 GMC Denali 2500HD 6.6 DuraMax - Sierra Blanca
TAC VA-18 | WBAC 1927 - Spirit of Virginia Club | AIR 53869