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Looking to hook up a humidifier. What 12 volt leadsdo I use off the transformer in the ruud 90 achiever so the humidifier lets water run when the ruud unit turns on

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Usually you would jump it off the white low voltage wire. check t-stat and see what wire is hooked up for heating. also us the blue or common wire.


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Posted on Jan 16, 2009

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1 Answer

Humidifier does not turn on


if your saying that the voltage drops to around 4 volts at the supply transformer at anytime , then id say the load (device connected) is too much for the transformer to supply this most likely is caused by an internal fault in the load (humidifier) also since its a water appliance id say a water leak might be a factor in that as well , taking a look under the cover of the humidifier 4 signs of a water leak (or past one) would be where id start

Nov 11, 2015 | Aprilaire Model 700 Automatic Whole-house...

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I have an AprilAir 600 humidifier, I don't see water running to the filter. It's very dry, I have a combination termometer and humidier and shows the humydity at 16%


Hello, check to see if you are getting 24 volts to the solenoid valve, if you are and the solenoid does to click to let the water in it must be replaced. If you are not getting 24 volts start at the transformer and work your way toward the solenoid valve to find where the voltage stops.

Mar 08, 2011 | Aprilaire 600 Humidifier

1 Answer

550 not working water supply is ok


Hello, check to see if you are getting 24 volts to the solenoid valve, if you are and it does not click on to let the water into the humidifier then the solenoid must be replaced. However if you are not getting 24 volts to the solenoid valve check if yuou are getting 24 volts at the transformer, if not then turn power off to transformer and check the continuity of the secondary side of the transfomer, you should have resistance if not replace the transformer. if that checks out good check the wire connection between transformer and solenoid and make sure it is tight. If wire connection looks good then either humidistat is bad or current sensing relay/sail switch.

Jan 30, 2011 | Aprilaire 550 Humidifier

1 Answer

No humidity in the house


Hello, the first to confirm is if you are receiving 24 volts at the transformer, if you are then check for 24 volts going into the humidistat and out of the humidistat, if voltage is confirmed there then check if your solenoid is recieving 24 volts, if it is and the solenoid is not letting water into the humidifier than your solenoid is bad and must be replaced. If you do not have 24 volts at the transformer then turn off power to the transformer and set your meter to read continuity, you should have resistance if not the transformer is bad and must be replaced. If you have power to the humidifier and not humidifieing properly then you have to set the humidistat according to what the outdoor temp is, the outside temp determines what setting and % of humidity you should have in your home. Here is a what it should be
-20 set to 15%
-10 set to 20%
0 set to 25%
10 set to 30%
20 set to 35%
above 30 set to 40%

Jan 25, 2011 | Honeywell HE365 Humidifier

1 Answer

I installed a new Aprilaire 700 and everything looks normal except there isn't ant water flow, I am not sure if this is the solenoid or transformer problems?


Check if you are getting 24 volts at the transformer, if you are then appy power directly to the solenoid valve from transformer, you should here the solenoid valve click and let water through. If not replace the solenoid valve. If the valve works by giving power directly from transformer the check the wiring, humidistat, and current sensing relay/sail switch.

Jan 10, 2011 | Aprilaire 700 Humidifier

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...

1 Answer

My Ruud Achiever 90 Plus not blowing cooled air


Look on the condensor, (outdoor unit) at the very bottom of the rear panel and you should find a red reset button. push it. If that does not solve the problem, and the outdoor unit is running (make sure both the fan AND the compressor are running) then you are looking at a low refridgerant issue and possibly dirty coils.

In that case, clean the coils and have refridgerant added.

Sep 23, 2009 | Ruud UBHC Air Conditioner

1 Answer

Aprilaire


Commonly outdoor wood boilers use a hot water coil mounted in the ductwork above your furnace. In this application the Ruud furnace is still using its blower assembly to circulate the warm air from the boiler to your home. If this is the case. Have your heating guy install a #50 relay on the furnaces blower motor to activate your much needed humidifier. If this is not the case and your Ruud furnace is totally independent of the boiler. Still install the #50 relay in the furnace and manualy activate the fan only feature on your thermostat.
Good luck
HVAC Teacher

Feb 21, 2009 | Aprilaire 600 Humidifier

1 Answer

My humidfier is not working


is the water on ? if it is you will need to use a multimeter to test to see if you have 120 volts at the transformer, 24 volts from the transformer to the solenoid, make sure you have the low voltage wiring completing a circuit from the transformer, to the solenoid, from the solenoid to the humidistat, humidistat to the transformer again, make sure your transformer is hooked in to only receive power when you are calling for heat, thats about it, hope that helped ya, and thanks for your question, let us know if that helped, thanks again,
mr.grzz

Jan 20, 2009 | Aprilaire 550 Humidifier

1 Answer

No water to my Aprilair model 550.


Some sump pump have a safty switch that will not let the hum. come on if the tank is full of water, I,m not sure if this is the type that you have but make sure that the pump is pumping water. Also your humidistat have an internal switch that it should be set to bypass not to power Note: some humidifier have their own power supply the 550 dose not

Jan 26, 2008 | Aprilaire 550 Humidifier

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