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Hello, In order for the humidifier to turn on and off you need either a sail switch or current sensing relay. A sail switch senses air flow and will turn on the humidifier when the blower motor kicks on and a current sensing relay senses current through the blower motors common wire. If you have either of theses hooked up already and the solenoid valve remains open then the solenoid valve must be replaced.
Do you have a sail switch or current sensing relay with this humidifier? In order for the humidifer to turn on and off u need either a sail switch that senses airfllow in the return air duct and will turn off the humidifier when the blower motor stop or a current sensing relay that senses current on the blower motors common wire. I will post of pic of each one
Aprilaire, a manufacturer of indoor air quality products including thermostats, air cleaners and dehumidifiers, also offers a line of whole house humidifiers. Installed in your existing heating and cooling system, humidity is produced by a supplied water source that flows over a water panel before being distributed throughout your air through the heating and cooling system. Issues you may need to troubleshoot with your Aprilaire humidifier include error messages and the unit producing too little or too much humidity.
Things You'll Need:
Replacement water panel
Turn down the control dial by one setting if condensation appears on your windows or walls.
Turn up the control dial by one setting if there is a lack of humidity, often indicated by dry skin or peeling wallpaper or paint.
Turn the control dial to "Test/Reset" if the humidifier does not run. Verify the heating and air conditioning unit blower is operating. If the heating and air conditioning unit is not operating or you are unable to resolve the issue contact a heating contractor.
Contact a heating contractor if you turn the control dial to "Off" and the humidifier continues to run.
Contact your Aprilaire dealer (see Resources) if you notice an error code on the display and the "Call Dealer for Service" light flashes.
Turn the control dial to "Off" and turn off the water supply if the yellow "Change Water Panel" light flashes. Lift the front panel off of the humidifier. Slide out the water panel. Insert a new water panel. Replace the front cover. Turn the control dial to "Test/Reset" until the "Humidifier On" light flashes. If you feel uncomfortable changing the water panel, contact a heating contractor.
Tips & Warnings
Purchase replacement water panels through your Aprilaire dealer or a heating contractor.
The reason you can not run your humidifier while the blower is off, is because all the humidity would condense almost immediately and rot out your duct work. If you find that the humidity provided during the cycle of your furnace is inadequate, I would suggest purchasing a table top unit, and keep it in the room where you spend the most time. So, the answer to your question is no, you can not run a humidifier while your blower motor is off. Hope this helps.
i do apologize for the inconvenience but the unit will need to be cleaned by hand or you can go to a local hardware store and get a solution that you put in your water to help kill the residue. it's basically from your hard water. now if you do it by hand you will need to get a soft toothbrush. you'll have to scrub the coils. then rinse the particals away. now doing this the unit needs to be turned off and cooled. after you do the cleaning you can run it like normal. if you have any other concerns or questions please feel free to ask.
It is possible that you did not set the new blower on the proper speed. Black wire is high. Blue is medium. Red is low. If the fan is operating to slow it can run to hot and trip the high limit control. Make sure the filters are clean. When the old motor went bad, the problem might not have been discovered rite away your high limit control might need to be changed.
Also anytime you work on a furnace you can kick up some dust. Always clean the flame sensor.
you may try running your blower 100% of the time.this should allow the humidifier to stay on even when your not heating. once the humidity level gets to where you want it, you may be able to put the fan selector back to auto. also you mentioned you have a variable blower. this is great if it is set up to run at approx. 20% fan speed when it is not heating or cooling. at 20% you can circulate enough air through the house to humidify without being able to hear the noise of the blower. it will really increase the comfort level of the house if you tend to have hot and cool spots. if it was not set up this way, contact the installer and ask if they can do this for you.
the kitty will turn off if you rotate the dail all the way to off (straight up). Look at the pink arrow on the dial. You will feel that the knob does not want to go any further when you are at "on" which is the lowest setting and no steam comes out. But you have to go all the way to off.
The elephant and frog models have actual on/off switches but this one its just the dail.
Is the level of water dropping? If so, the humidifier is working. If you have a cool air humidifier you won't see any steam or anything at all. You will just feel cool air. Watch the water level and see what happens.
THE MOTOR ONLY TURNS THE SPONGE DRUM AT MAYBE 10X'S PER MINUTE. THIS IS A BY-PASS TYPE HUMIDIFIER THAT RELIES ON YOU FURNACE BLOWER MOTOR TO SUPPLY AIR ACCROSS THE SPONGE MEDIA.
NOTICE THE 5"-7" ROUND HOLE MUST BE DUCTED TO THE PLENUM OR RETURN AIR. (IF MOUNTED ON THE PLENUM, THE HOLE HAS TO BE DUCTED TO THE RETURN AIR, AND VISA-VERSA.)
CAUTION!!!IF YOU HAVE CENTRAL AIR?
A "DAMPER" MUST BE INSTALLED AND KEPT CLOSED THROUGH-OUT THE "COOLING SEASON".
SERIOUS DAMAGE TO YOUR COMPRESSOR CAN RESULT FROM TOO COLD OF AIR ... CIRCULATING AND "BY-PASSING YOUR EVAPORATOR COIL".