It seems HCI, simply makes the controller boards?
I did locate the board, the entire controller board
HCI used Aromat Relay number JC2A JE-B-DC24V-H24V.
Aromat was bought out by Panasonic, and changed the number to JC2AF-DC24V-F. $7.66 at Mouser and Newark Electronics.
UPS 3 day shipping really means, 3 days from when they feel like it...
Finally the part came in, and a quick and simple 2 minute solder job, the blower motor still will not run. Further testing with the new relay, indicates the blower motor is in fact bad as well. Sighs. But a $100 repair bill for the relay and motor is still better then $400.