Homesweet Low Air Flow Sail Switch for Atwood/HydroFlame Furnace Models 7912-II, 8516-IV, 8520-III, 8535-IV, 8900 Series – Replaces Part # 36680

Low Air Flow Sail Switch for Atwood/HydroFlame Furnace Models 7912-II, 8516-IV, 8520-III, 8535-IV, 8900 Series – Replaces Part # 36680 ▷Function & Importance The sail switch is a safety device located in the furnace’s air chamber. Its primary functions are: 1.Detects Adequate Airflow: It confirms that the combustion blower is moving air at the correct speed before allowing the furnace to ignite. 2.Prevents Unsafe Operation: If airflow is insufficient (due to a blocked vent, failing blower, or faulty switch), it prevents ignition or shuts down the furnace to avoid overheating or unsafe conditions. 3.Common Symptom of Failure: If your furnace’s blower runs but the burner does not ignite, or if it cycles on and off repeatedly, a failed sail switch is a likely cause. ▷What’s Included & Value Quantity: 2 x Sail Switches

• 【PRECISE OE PART NUMBER REPLACEMENT】Low Air Flow Sail Switch for Atwood/HydroFlame Furnace Models 7912-II, 8516-IV, 8520-III, 8535-IV, 8900 Series – Replaces Part # 36680
• 【WIDE FURNACE MODEL COMPATIBILITY】Compatible for Atwood / HydroFlame RV furnace series, including but not limited to: 7912-II, 8516-II/III/IV, 8520-II/III/IV, 8525-II/III/IV, 8535 series, and 8900-I/II/III series. Please verify your furnace's specific model before purchase.
• 【CRITICAL SAFETY FUNCTION: LOW AIRFLOW DETECTION】This is a key safety component. It detects whether the blower is producing sufficient airflow. If airflow is inadequate, it prevents ignition to avoid overheating or unsafe operation. A common failure symptom is the fan running but the furnace not lighting.
• 【GREAT VALUE 2-PACK SET】This is a convenient 2-PACK. Install one to fix your furnace immediately and keep the second as a ready spare for future maintenance or road-trip emergencies, offering excellent value
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