Aprilaire 4410 Water Level Sensor Assembly Aprilaire 400

Water Level Sensor Assembly for Aprilaire 400 Series

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Water Level Sensor Assembly for Aprilaire 400 400M 400A Humidifier

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Part Number: 4410

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Aprilaire 4410 water Level Sensor Assembly for Aprilaire 400, 400A and 400M. Fits below the scale control insert at the bottom. It contains two magnetic reed switches connected in series that comes in contact with the two floats on the water panel frame. The two magnetic reed switches will close if both floats are at the bottom of the sump, while empty of water. This activates the water solenoid valve, which sends water through the water panel. Excess water then drains into the sump, causing the two floats to rise and interrupt the circuit to the solenoid valve. The level sensor switch will open and close the solenoid valve if either float rises.

Q: How does it work

Asked by: Norman - 5/12/2022

A: It contains two magnetic reed switches connected in series that search for the two floats. The two magnetic reed switches will close if both floats are at the bottom of the sump with no water in it.

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Answer provided by: Ericson (5/12/2022)

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Q: Is your part # 59439-500 2316 a correct replacement for part #59439-500 1118 for model 400 Aprilaire.

Asked by: Anthony - 1/4/2023

A: Yes, the wate level sensor 4410 is correct part for model 400. It is somtimes called 59439-500.

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Answer provided by: Ericson (1/9/2023)

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Q: I have an old Aprilaire 400. Prob at least 15 years old. Will this replacement level sensor still work on this?

Asked by: KC - 10/11/2023

A: Yes, the water level sensor will for all 400 series humidifier despite manfacturing date.

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Answer provided by: Ericson (10/11/2023)

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Water Level Sensor Assembly for Aprilaire 400 Series

Q: How does it work

Q: Is your part # 59439-500 2316 a correct replacement for part #59439-500 1118 for model 400 Aprilaire.

Q: I have an old Aprilaire 400. Prob at least 15 years old. Will this replacement level sensor still work on this?

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