Answer
Mar 14, 2024 - 08:19 AM
The Dometic Sail Switch for Atwood HydroFlame AF/Dometic DF Furnaces is a crucial safety device situated between the valve and the ignition control, just above the limit switch. To access it, you need to remove the fan shroud's face, blade assemblies, motor, and the larger blower assembly. It connects to the limit switch, the thermostat, and the ignition control. For the Atwood 8900-II and 8900-III Series Furnaces, the high-temperature limit switch (part number 37021), which prevents overheating, is located above the heat chamber. Accessing it may require removing the furnace cover and inspecting the area behind the blower. Always refer to your specific furnace model’s manual or consult a professional if unsure.
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