Originally Posted by DavidMort
Never received a thumb drive.
Mine was in a large brown envelope that contained all the literature and a set of keys. The literature included the heater info. I don't have the Suburban heater.
I have read thst if the heater is not working to check the following:
Pilot light or spark to ignite
Clear any debris around tubes and chimney areas.
There is more you can do if the above doesn't help but I am not knowledgeable enough to tell you without error.