​Dometic Furnace Low Air Flow Switch - Sail Switch - PN 31377

Dometic Furnace Low Air Flow Switch - Sail Switch - PN 31377

• The sail switch is an air proving device that will not let ignition occur until it sees 75% of the motor’s rpm’s. It ensures that the combustion wheel is rotating fast enough so that there is a proper air and gas mixture for smooth ignition.
• Compatible models: Furnace AFM Series with Serial Numbers BEFORE 72489156: AFMD25111, AFMD25121, AFMD25131, AFMD25141, AFMD25151, AFMD30111, AFMD30121, AFMD30131, AFMD30141, AFMD30151, AFMD35111, AFMD35121, AFMD35131, AFMD35141, AFMD35151 / Furnace AFLD Series with Serial Numbers BEFORE 72991127: AFLD35111, AFLD35121, AFLD35131, AFLD40111, AFLD40121, AFLD40131 / AFLA Series with Serial Numbers BEFORE 81689155: AFLA35211, AFLA35221, AFLA35231, AFLA40211, AFLA40221, AFLA40231 / Furnace DFMD Series with Serial Number BEFORE 72489156: DFMD25111, DFMD25121, DFMD25131, DFMD25141 and DFMD25151.
• Condition: New in retail packaging

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