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    Ducane CMPB075U3A furnace turning off after 2 minutes

    Attempted to start my furnace, and I noticed it's short-cycling this season. It starts up as usual, I can hear the burners fire up, and both the inducer motor and blower motor are spinning. Furnace is an old Ducane CMPB075U3A (20 years old) high-efficiency model. Problem Around 2 minutes after...
    • cocooner
    • Thread
    • ducane furnace
    • Replies: 6
    • Forum: HVAC
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