The carrier unit here in question what seems to happening when it starts everything seems OK with spark,flame and blower the strange thing its seems to be cycling will burn then start to lose its flame then start right back up.The unit is not shutting down while this is happening almost looks like you are turning the gas valve off and on manualy while the unit is running.
On another not there is some clicking going on while this happening and while it is the gas does return to a normal burn then the cycle starts all over again Any Ideas? Thanks