Why is my Armstrong EHU-600 contactor cycling and filling continuously?
- CCarl StewartAug 1, 2025
If the contactor cycles or chatters and the unit fills continuously, it might be due to mis-wiring of the humidistat in your Armstrong Humidifier.
Why is my Armstrong EHU-600 contactor cycling and filling continuously?
If the contactor cycles or chatters and the unit fills continuously, it might be due to mis-wiring of the humidistat in your Armstrong Humidifier.
Why are 5 demand lights flickering on my Armstrong Humidifier?
If you observe 5 demand lights flickering on your Armstrong Humidifier, regardless of whether the sensor or pigtail is connected, the humidistat may be mis-wired.
What causes the contactor to chatter and the Armstrong Humidifier not to fill?
If the contactor chatters and the unit doesn't fill, the humidistat might be mis-wired in your Armstrong Humidifier.
Why is 1 or no demand lights flickering on my Armstrong EHU-600 Humidifier?
If you notice 1 or no demand lights flickering on your Armstrong Humidifier, whether or not the sensor or pigtail is attached, it could indicate that the humidistat is mis-wired.
Ensure installation complies with all applicable building, plumbing, and electrical codes.
Secures the humidifier unit to a wall using appropriate fasteners.
Details the process and safety precautions for connecting electrical power to the unit.
Information on selecting and wiring the control humidistat for humidity regulation.
Provides the electrical wiring diagram for the EHU-600 series humidifiers.
Discusses the impact of water quality and necessary treatments for humidifiers.
Ensure installation complies with all applicable building, plumbing, and electrical codes.
Secures the humidifier unit to a wall using appropriate fasteners.
Details the process and safety precautions for connecting electrical power to the unit.
Information on selecting and wiring the control humidistat for humidity regulation.
Provides the electrical wiring diagram for the EHU-600 series humidifiers.
Discusses the impact of water quality and necessary treatments for humidifiers.
| Brand | Armstrong |
|---|---|
| Model | EHU-600 |
| Category | Humidifier |
| Language | English |












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