When I push the setting dial down and push the iginator control button the flame starts, and when I release the dial knob the flame goes out and that is on Model # CBN 301 DESA Blue Flame Custom Glow
Heating & Cooling - Desa International - Blower Glow Warm Wall Heater
Answers & Comments
It sounds like your thermocouple either needs to be cleaned or replaced.
I would start by cleaning the thermocouple first.
Here is a link to the instructions.
http://www.msservice.net/ts/reseat_thermo-clean_pilot-ODS.htm