Easy fix: Check the solenoid. Turn off the power to your humidifier and the central air unit. On the side of your humidifier is a brass solenoid. It can get clogged with lime and calcium. Most videos and instruction manuals tell you to replace the solenoid. No need if you can turn a wrench. 1. After all power is off turn the water off to the humidifier and disconnect the top line water line at the nut. 2. Disconnect the bottom line water line that will go to your humidifier. 3. Take a Philips screw driver and remove the two screws that hold the solenoid on the side of the plastic housing of the humidifier. 4. Leave the wires connected unless you need more room to work. If you disconnect the wires then label them with tape (colored) so you put them back on correctly. 5. In the inlet or outlet water pip of the solenoid is a trainer that may be clogged. With a paper clip pull it out and clean it. If it’s clearly clogged then stop and put all back together. That may have been your problem. 6. If it’s not clogged then it may be clogged inside the solenoid. 7. The nut on the end of the solenoid is silver. Take it off and the magnet (main power unit) will slide off. 8. Notice the flat head screw post on the end of the solenoid. Turn it and remove. Be careful as a small spring loaded plunger is inside. 9. Take apart and clean all parts. You should be able to blow air in the intake water line tube and it go out the out water line tube as well as were the plunger hits in the center of the solenoid. If not then it’s clogged. 10. If clogged then just soak all but any parts with rubber or plastic in a small white vinegar solution for a couple of hours to eat away that lime. If it’s not clogged then you probably have a bad solenoid. 11. To check and see if the solenoid is bad just put it all back together but do not re-wire the solenoid to the humidifier. 12. Turn on everything without the wires going to the solenoid (turn on meaning put power back to the unit. 13. When the system is running as it should without the humidifier and solenoid wires attached check the two lead wires with a volt meter for 24v. If you have 24v then you have a bad solenoid and need a new one. If no 24v then you may need a new control panel. Hope this helps you out.
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if you hear the solenoid click then you may have a clogged orifice or prefilter. these are both located near the solenoid. the orifice is usually in the feed tube and the filter is in the inlet of the solenoid. Try the orifice first to see if it is clogged. If that is clear the try loosening the compression nut before the solenoid to see if you have water coming to the humidifier some times if a needle valve was used they get bad also. I would recommend changing the needle valve out and putting in a proper side stop valve. Most municipalities do not allow needle valves per there codes.
Hello, typically solenoid valves should be replaced every 7 years and they are not very difficult to replace. Just need to shut off water at saddle valve, turn off power to humidifier, and remove mounting hardware. Here is a link to store which sells the solenoid needed for your humidifier. http://www.aprilairehumidifierparts.com/product.php?p=aprilaire_4005&product=111011&category=1686
It's probably the saddle valve. The self-piercing needle rusts and clogs the water line. Replace the saddle valve with a non self piercing one. Also, check the voltage to the solenoid valve on the humidifier. You should be getting 24 ac volts. If not, replace the transformer. If voltage is present and still no water, then replace the solenoid valve (very expensive).
Hello, if there is water to the solenoid valve but not passing through it than the solenoid valve is malfunctioning and must be replaced. However, if there is no water at the solenoid valve then either the saddle valve or supply line is clogged with sediment. A easy way to chek the solenoid valve is apply power directy to the solenoid valve from the transformer, if it does not open then replace it.
Hello, it depends where the sound is coming from,if it's in the supply water line it could be caused by water hamer or the inlet side of the solenoid valve might be clogged up with sediment. Water hammer is when the solenoid closes under high water pressure and a water hammer arresters should be installed. If the sound is coming directly from the solenoid valve and is more of a chattering sound then there is a loose low voltage wire or the solenoid is going bad. If you disconnect the power to the solenoid and the chattering stops then solenoid must be replaced as it is the cause of the noise.
Most humidifiers have a strainer on the inlet side of the solenoid valve, if this strainer is clogged up it will reduce the water flow to the humidifer. Usually sediment builds up in the strainer and all you need to do is remove it and clean it up and reinstall it.
I have same problem with no water flow on identical humidifier but was able to fix it. Removed the inlet to the solenoid valve and found (1) a small taper mesh filter inside (2) a small diameter orifice that was clogged. Cleaned the miniature filter and used a sewing needle to open the orifice and now works perfectly.
trace thre copper tube backwards to where it connects to main water line if there is a valve there open and close it if your not sure whats open or closed try it both ways there is also a little restriction device either on inlet or outlet of solenoid that may be clogged
solenoid valves dont just burn up just like that you have a recurring restriction due to bad water.Check the saddle valve at the water heater first then check for postive water flow at inlet to the solenoid valve,if you have water flow the valve is clogged with sediment.
I dont know why your humidifier is spitting water out.
But it sounds like you need to clean the unit and install a new filter. Once the filter becomes used, the humidifier won't work as well. Less water will be used because the clogged filter can't hold as much. Once you replace the filter, your water consumption should go back up and you should feel a difference in your home again.