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Duo-Therm furnace popping sounds

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Duo-Therm furnace popping sounds by jim
Post New Message Terry trailer with Duo Therm Model 90030-813. 30K in 23.1K out orifice 52

Thermostat is bad. I am changing that but the real problem is a loud popping sound during operation. Sounds like combustion of propane pocket within burner. It happend every 30 or so minutes during the night. Not sure if it is associated with flame on or not. Doing more testing after I replace thermostate this evening. Seems to happen as sea level up to 10K feet.
Any thoughts would be appreciated
Jim
All Messages in ThreadAuthorDate
Post New MessageDuo-Therm furnace Tom Dawson 5-4-08  
  Reply to MessageRe: Duo-Therm furnace Keith 5-4-08  
  Reply to MessageRe: Duo-Therm furnace Tom Dawson 5-5-08  
  Reply to MessageRe: Duo-Therm furnace Jason 5-26-08  
  Reply to MessageDuo-Therm furnace popping sounds jim 8-20-08  
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