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Wiring diagram carrier modle 49bf018120 humidifier

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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

1 Answer

No "C" on furnace power strip for humidifier power "C"


Hello, since this humidifier has a transformer installed with it, you bring one wire from humidifier to Humidistat and then a wire from humidistat to Transformer. You will need a current sensing relay to turn the humidifier on and off with the Furnace cycle. I will attach a link for a wiring diagram for your Humidifier http://docs.electronicaircleaners.com/aprilaire_700a_installation.pdf

Nov 15, 2012 | Aprilaire 700 Humidifier

1 Answer

I have just completed installing a Honeywell HE220A humidifier to a Carrier Weathermaker 8000vs that was installed in 2003. My problem is that all the identified circuits in previous posts on the circuit...


I believe that Carrier has a 24 volt setup for humidifier but am not sure. On the circuit board I think there is a terminal (HUM). If there is this terminal connect 1 wire to this and 1 wire to C terminal.
If not,pretty sure there is a 120 volt EAC terminal. This would only kick on when blower is on. If you have to use this you would have to install transformer to the EAC connections

Jan 28, 2011 | Honeywell HE220A1019 Whole House...

2 Answers

I installed a honeywell 360a flow thru humidifier, and a new transformer. I have power thru the wires to the fan cover. Also the humditstat clicks when turned on. The fan does not work and the solenoid...


Posting a diagram of how you wired the installation will help the both of us figure out what the problem is. You don't have to accept or rate this solution in order to post comments or information. But accepting a solution will not stop you from communicating with the expert. You can still communicate with the expert as long as you need assistance regarding the issue stated herein.

Jan 11, 2011 | Honeywell HE360A1027 Whole House...

1 Answer

I have a carrier furnace, humidifier valve popped fuse


hook up the new transformer to the white (common) from the blower motor, and the lead from the blower motor hooked up to the heat term on the board. (just cut the wires and wire nut all three together)

Nov 18, 2009 | Honeywell HE360A1027 Whole House...

2 Answers

Humidistat installation question


I suppose you are looking at the do-it-yourself model. Depending on the wire that is run up to you Regular Thermostat from your furnace. You may have to run a seperate line for the Humidistat. A digital thermostat that does Humidity and Temperature is recommended. Or you could just place a Humidistat near the furnace room. A wiring diagram will come with the Humidifier discribing the different ways to wire it.

Jan 09, 2009 | Honeywell Power Humidifier: Furnace...

1 Answer

Carrier SBP Humidifier is not working


I would suggest turning up the humidistat (usually located on the the return air duct to a higher setting and listening for a "click" noise on the supply valve. If you do hear a click but dont see / hear any water than the culprit is likely the valve itself.

Nov 22, 2008 | Carrier SBP Humidifier

1 Answer

Model 760 Humidifier - need wireing diagram please....


I logged on to the April Aire website and found the wire diagram i needed.
they have really good information on all their units. thanks.sc.

Aug 18, 2008 | Aprilaire 700 Humidifier

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