The saddle valve is a small brass water supply valve which is often clamped to a copper household water supply pipe. Over time, the saddle valve can become clogged with sediment or calcium deposits. Because it is difficult to clean a saddle valve thoroughly, and because the replacement cost is fairly low, we recommend replacing the saddle valve if it is restricted.
Top Solution
02 - Water supply valve turned off
Confirm the water supply shut off valve is in the on position. You may have to rotate or pull a knob or move a lever to open and shut the valve. You can follow the water line from the humidifier's water inlet valve to find the water supply valve.
Less Common
03 - Water Supply Saddle Valve
If the water inlet valve is receiving voltage from the furnace control board but is not opening to provide water to the humidifier, the inlet valve is likely defective and will need to be replaced.
If your humidifier is not working, first verify that the humidistat is on and set properly. If there is a on/off switch, make sure it's turned on. A normal comfortable humidity range in a home is between 40% to 50%. Refer to owner's manual for guidance.