Hi i am trying to save me some money on a service call...my he365 is not working. it has power to the unit, the water line is not block up, I replaced the solenoid and still no water comes to the OUT part of the solenoid. I checked the wires and switch them back and fourth. Can you give me some assistance. Need help in Colorado

Hello, there should be a thumbscrew on the front of the unit that you turn to open the unit, once you loosen this it should come off, if not try moving the front cover a little it should come off. You do not have to unplug the connector but make sure the power is off to the unit when replacing the filter.

Is that a Honeywell HE365?

The saddle valve that controls the water is only to be used as an "on" or "off" control. It is not recommended as a throttle valve since it can leak if it is not placed in the full open or fully closed setting

I would suggest that you locate supply valve to humidifier and loosen compression nut on outlet side to see if you have water at that point. If you do shut valve off and disconnect supply line on incoming water line and make sure it is clean. Check for plugged screens or lime build up. Clean as needed. If you aren't getting any flow thru shut off valve then turn off water supply to the valve and replace it. I hope this helps you. Thanks

MAKE SURE YOU HAVE TURNED THE WATER VALVE ON.

your water inlit float is blocked or, out of adjustment

These humidifiers need to be cleaned inside. They become clogged from minerals in the water.

No, it will not stop flowwing if it is the water supply. A solenoid valve opens the flow everytime there is a call for humidity, but it stops at the humidifier when there is no call, so it will leak from that point until it is fixed or tightened.

Furnace mounted humidifiers "should" be wired so that they are only running when the furnace blower is on. When the furnace is off so should the humidifier. If it is wired proper, it is possible that you have a bad solenoid valve. It could be stuck in the on position. If it is bad these valves can be expensive. If your humidifier is newer, fix it. If it is old you are probably better off to just buy a whole new unit.
Good luck

Loosen the brass fitting where it connects to the soleniod valve. If water comes out your saddle valve is ok. Carefully retighten this fitting. With the humidifier turned on loosen the first fitting down stream from the valve see if water comes out. if it does turn the humidifier off and see if it stops, it should. That will tell you the the valve is ok then, just clean the filter and the oriface. if it does not turn on and off check the wiring. if ok replace the valve.
Good luck