Need help fixing '84 Sovereign forced air heater

[guide dog]

My forced air heater comes on but blows cold air i.e. it is not igniting. I took it apart, cleaned it out and it worked the first time then went back to blowing cold air. Any ideas on where to start with fixing it. Much appreciated.

[guide dog]

Thank you.....

[Aage]

Hi there, guide dog! Welcome to Airforums, the home of several tons of information concerning all things Airstream and experienced users ready willing and able to share it with you!

Hang in there, very soon someone much more informed on heaters than I will come along to discuss magical things like thermocouples with you.

Cheers!

Aage