3 days ago I had atsf 3751 and milw S-3 running refilled smoke units not off while running all was well until!
I didn't hear 3751 making any sounds but was running so stopped it and using cab-2 hit the R button whistle sounded all was reset.
I looked and had 3 blinks of cab light no smoke. so using smoke switch on engine set to the off position reset 3751 cab light issue all gone turned smoke switch on but no smoke and no 3 cab light blinks so let engine run.
3 laps latter the S-3 started doing same issue as 3751 so reset it and again no smoke but no 3 cab light blinks!
so this morning 3 days since issue started I again powered up both engines and poof both the 3751 and S-3 smoke units are working again!
so is it possible to maybe overfill smoke units and cause a false diagnostic 3 cab light blinks and then after drying out all is well again?
or is there something else going on here such as a bad spot in fan motor[s] ?
thanks for any thoughts to watch for if it happens again.