Coleman 7990-319p Evcon Gas Furnace Control Board "running thermostat kicking" Questions

Goodman Model GMV950905DX-an electrical surge burned out the transformer which I replaced, also replaced the circuit board. The variable speed furnace will no longer kick into high speed and it will l

thermostat and thermocouple Fix Furnace Flame Sensor (Flame That Goes Off) - YouTube ? 1:22 https://www.youtube.com/watch?v=fBJ3r9MUa-U Nov 29, 2011 - Uploaded by RochNoure A Furnace Flame Sensor is a

...thermostat. will not ignite. blower keeps running. fan set to auto. help! Make sure that there is not a manual limit that has tripped and needs to be reset. Roll out limits, and check primary limit. ...