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-   -   My gas furnace is not getting vacuum pressure for the pressure switch. (https://www.askmehelpdesk.com/showthread.php?t=518322)

  • Oct 19, 2010, 05:54 PM
    mlutman_1981
    My gas furnace is not getting vacuum pressure for the pressure switch.
    All the hoses were replaced as well as the pressure switch it self. I can jump it and it fires right up. It's a Heil model. The pilot light lights automatic. If you take the hose off that goes to the pressure switch and suck on it, it switches and the pilot light lights off. I don't know much about heating and ac, but I'm thinking it may be the motor not having enough RPM's. Any opinion or help would be appreciated. Thanks. Also, the pressure switch it an International Comfort.
  • Nov 20, 2010, 05:49 AM
    NC_Brian
    Did you check the pressure tap to make sure it is free of debris.
    That is what I would check first.

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