Question about Aprilaire 700 Humidifier

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When does the humidifier fan start? Does the water flow trigger it? Will the fan nt start if I turn off the water supply?

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Humidifier should be powered from the furnace heating 24 volt terminals through a humidistat and then to your humidifier. The fan and the water solenoid on the unit should come on together. if the water is not turned on the fan should still run, unless the unit is not plugged in.

Posted on Nov 27, 2010

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1 Answer

Humidifier Running Continuously with Fan Blower


As long as the humidifier start/stop is regulated by air flow there is no way to cycle it on/off with another device. If, however you disconnect that capability and, instead wire it to the heat on cool on switch it will only turn on when the stat calls for heating or cooling. You may need to install an intermediate relay off the stat wires to regulate the different(assuming that they are) voltage of the humidifier start/stop.What a fun project, thanks!

Jan 22, 2013 | Humidifiers

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No water is flowing to the humidifier so I obviously have a problem with where the valve connects to the water supply. With no water, the fan nothing works on the humidifier. Is this normal? If I get...


Is the saddle valve open? if it is check for sediment build up in it, if it;s clear you will need a new saddle valve. If the fan is not running than most likely you are not getting power to the humidifier, check for 24 volts to the solenoid valve. By the way do you have a current sensing relay or sail switch hooked up to this humidifier?

Dec 28, 2010 | Honeywell 360B Humidifier

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Humidifier receives voltage when the indoor blower motor comes on in the heating mode, and blower motor dose not come on right away.See if water flows when indoor fan is blowing heat, Good luck.

Mar 04, 2010 | Honeywell HE225B Humidifier

1 Answer

I installed a 700A model on my furnace (does not have a bypass but has a fan built in). It is insallted on the supply side per the instructions. The "humidifier on" light is on when the funace is running....


try tying the 2 yellow wires together that come out of it and as long as door is on properly and unit is not defective it should start if not most likely the control board inside is bad

Dec 16, 2009 | Aprilaire 700 Humidifier

1 Answer

Water not flowing into HE360A


If you used the plastic tubing to the humidifier(I recomend copper) there should have been a little brass tube with a flare on it. This goes in the plastic tubing to grip the the sleeve better. See if this helps

Tinner
Sunsetmech

Dec 14, 2009 | Honeywell HE360A1027 Whole House...

1 Answer

Water is getting to my solenoid valve and the valve is activated as it is warm to the touch. No water on the back side of the valve to the humidifier. It is on sometimes and other times is doesn't work....


Valves do go bad, but I had the same issue and it was the inlet orifice that was plugged.
To fix: Turn off the water supply. Disconnect the water inlet line to the solenoid. The water inlet line connect to ~ 1" long piece that goes into the solenoid. Unscrew the water inlet piece and remove it from the solenoid. Check it for water flow - water should slowly drip out the small orifice at the soleniod side. There is a pin-hole sized orifice on the solenoid side and it doesn't take much to plug it. There is also a narrow cone-shaped filter inside the inlet piece. You can use tweezers to remove the filter and & use a safety pin or sewing needle to clear the orifice. Check the filter, clean it if necessary, and reinstall the filter. Now check for water flow thru the part before reinstalling. Reconnect the water inlet line and turn on the water supply. Turn your humidistat to trigger the humidifier. You should see water flowing through the drain tube.

Dec 13, 2009 | Honeywell HE220A1019 Whole House...

1 Answer

My honeywell humidifier attachment on my furnace will not start after the summer with water running to it.I have the humidity cranked up, but the filter is still bone dry.


Humidifiers usually are wired up to ONLY come on when the Heat is on and the fan running....anyother time you check it it will not be powered or wet...turn your heat on , wait till the fan comes on...then turn up your humidistat you should hear a click if its a flow through type and water should start flowing from the top...or if its tyhe drum style with the sponge...you should see it then turning...if it doesnt turn the pad/spindle may not be installed properly...if only fits one way

Oct 24, 2009 | Honeywell Power Humidifier: Furnace...

1 Answer

Water keeps running to Honewell 360A Whole House Humidifier


You may need to replace the valve that is wired to the furnace that controls the water flow

Feb 01, 2009 | Honeywell HE360A1027 Whole House...

2 Answers

Aprilaire 760 won't start


No. when you remove the front cover it will automatically disconnect the power supply. Try changing the water panel and cleaning out the orifice and filter screens located in the water lines connected to the solenoid valve.

Dec 26, 2008 | Humidifiers

1 Answer

No Water flow thru Humidifier


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

Nov 22, 2008 | Honeywell HE365 Humidifier

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