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Ventless propane heater does not light with auto thermostat, will light on manual but then if turned back to auto shuts down

Will only stay running when on manual setting

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Posted on Jan 02, 2017

hiltonjug
  • 612 Answers

SOURCE: I have Legacy ventless propane heater 15,000btu.

Try to take pilot assembly apart and clean real good. This will work most of the time. If it does not work for you, you will need to replace the gas valve. It's expensive but I'm about positive that cleaning it will fix it. Gas burns dirty and after a couple seasons a scale builds up that causes this problem. It's pretty common and nothing to worry about after it's cleaned. Good luck.

Posted on Oct 17, 2009

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