Is your Gibson furnace not staying on or repeatedly turning on and off? The flame sensor or the control board might need to be replaced. The control boards on this Gibson model (# KG7S 072C-24B1) commonly develop cracks in the solder joins causing the board to fail. Below are the part numbers for these two parts.

Gibson Furnace Model # KG7SA 072C-24B1

Nordyne Flame Sensor # 632484R
https://www.supplyhouse.com/sh/contro...

Nordyne Circuit Board for G7/M7 # 920915 (substitute part for discontinued control board # 624742 )
https://www.supplyhouse.com/Nordyne-9...