Question about General Filters 1042-LH Humidifier

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Continous water flow on a 1042lh humidifer

HI
continous water flowing all the time. ( if humidistat is turned on)
lennox funurnace, 4 to 5 years old, 2 speed blower, mid efficiency
when I turn on the humidistat, you hear the solenoid, click, water flows non stop, regardless if the furnance is on or not.

I installed a new 24v transformer, for direct voltage to the humidifer, installed a new solenoid

the furnance company unconnected the humidifer wiring from the circuit board of the furnance, as the humidifer was taking energy needed to run the furnance the correct lenght of time. house cold at times as the furnance did not stay on long enough.

the solenoid and two brass fitting, the longer of the 2 is pointing down.

I'm lost, any suggestions appreciated.
if the wiring is correct, could there be a short in that wiring ??

thanks

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  • rick Jan 26, 2009

    I replaced the solenoid and the unit worked properly for about a week. Then I started to get continuous water flow again. The solenoid did not shut off water supply when the furnace turned off. I could manually shut of the water supply by turning the humidistat down below 30% but above 30% I get continous flow all the time. Could I have a humidistat problem?

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Theholts220 - Sounds like they needed to install a bit larger transformer . You can also buy a A 50 Sensing relay that attaches to the wires for your motor and when you turn on the furnace it will allow the power to go to the humidistat. Very strange though they do not use a lot of power. Check and make sure the wires are not pinched or touching metal somewhere.


TLuzzo - The humidistat seems to be working when you turn it down. The wires for the solenoid should be hooked up to your furnace circuit board. The instruction manual will tell you where. If you dont have a spot on your circut board the A 50 sensing reley is they way to go. They are inexpensive

Posted on Mar 06, 2009

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