and FC4B models manufactured prior to 1994

000V output is weak

Common Questions What causes a pilot tube to fail

000 AFC) to protect the circuit during end-of-life events

typically functioning as a normally closed circuit that opens upon reaching the specified 300°F threshold

Aprilaire 45 Water Panel 323055-751 and FC4B models manufactured priorKeep your home's air comfortable and healthy with the Aprilaire 45 Water Panel, the essential replacement humidifier filter for your whole house system. This 2 pack of genuine OEM components is designed specifically for Aprilaire Model 400, including 400A and 400M units. Unlike standard panels, the Aprilaire 45 features a specialized heavy duty paper construction reinforced with aluminum layers, optimized for water saver (drainless) humidifiers. This