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Water runs all the time to drain from humidifier

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  • Robert Mar 12, 2011

    Is this a furnace mounted humidifier? and what brand is it?

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Hello, if this is a furnace mounted humidifier and your humidistat is in the off position, then most lkely your solenoid valve is stuck open and must be replaced.

Posted on Mar 12, 2011

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1 Answer

Water leaking / running from top of humidifier


humidifiers have a drain and if there is water going in it will be coming out the drain. check drain to see if it is clear, check hoses going into top of humidifier for cracks, check filter in humidifier.

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My humidifier is a Carrier and uses the square evaporator cartrages. There is a drain pipe coming out of the bottom that goes to a floor drain. I've noticed that there is a slow drip here all of the...


Hello, no the humidifier should be running only when the blower motor is running. Sounds like the solenoid valve is faulty if water keeps drainig from humidifier.

Sep 25, 2011 | Aprilaire 700 Humidifier

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I had a new hi-eff. furnace and A/C system installed three years ago. The furnace humidifier drains into a little giant condensation pump. I just noticed that the pump cycles on and off very rapidly when...


Depens on what type of humidifier you have there are tank type like lobb or water over waterover will make the pump run every time the lobb wont it has a tank with water going up in price lobb wa2 is better

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1 Answer

Is this unit design to have a continous flow into the drain? My flows all of the time.


Hello, the humidifier should only be running when the furnaces blower motor is running, therefore it should only drain when the humidifier is on and not flow continuously. Usually the humidifier will keep draining water when the solenoid is stuck open and should be replaced with a new solenoid valve.

Feb 04, 2011 | Aprilaire 700 Humidifier

1 Answer

Water running after heater shut off in humidifier


Hi check power at transformer / valve on water line could be stuck open clean valve out or transformer holding valve open

Dec 31, 2009 | Aprilaire 558 Humidifier

1 Answer

Honeywell HE260 leaks somewhere


Neither, even if the solenoid or humidistat stick, it should always drain properly. Is the unit mounted on the cold air return duct or the supply plenum? If it's mounted on the supply plenum, the water panel might be getting blown forward and spilling the water. High efficient furnaces also can leak water on the floor if its drain is restricted. If hum. is mounted on return duct make sure drain is clear by blowing through it. On Honeywell hum's I've seen the rubber hose from the solenoid valve to the distributor tray leak too, check the rubber 1/4" hose.

Dec 28, 2009 | Honeywell HE260A1010 Whole House...

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I have a Cool Mist V3500 humidifier. The fan


TRY POURING IN SOME WHITE DISTILLED VINEGAR AND RUNNING IT. THE VINEGAR LOOSEN UP ANY SCALE AND JUNK. AFTER RUNNING UNIT FOR AWHILE, DRAIN OUT ANY REMAINING LIQUID AND ADD DISTILLED WATER OR FILTERED WATER. RUN UNIT AGAIN. THEN DRAIN OUT ANY LIQUID. NOW THE UNIT SHOULD WORK AS NORMAL. IN THE FUTURE, TRY USING DISTILLED WATER OR FILTERED WATER.

Dec 13, 2009 | Vicks Cool Mist V3500 Humidifier

1 Answer

Aprilair 760 Humidfier will not stop water flow to EV panel


If the water continues runs nonstop even when the heater is turned off, you might have either a bad solenoid valve or a bad humidistat. Simply disconnect one of the two low voltage wires going into the unit. If the water turns off then your problem is most likely your humidistat or the low voltage wiring. If the water continues to run even when the low voltage is disconnected you have a defective solenoid valve.
Good luck.......

Apr 09, 2009 | Aprilaire 700 Humidifier

1 Answer

Water runs out of humidifier drain line constantly(rushes out)


Most modern humidifiers use a constant drain to flush mineral deposits, and to keep the water fresh at all times. This keeps the unit from holding standing water. This keep the water fresh and prevents mold spores from infesting the air in your home.
HVAC Teacher

Jan 27, 2009 | General Filters 1099-LH Humidifier

1 Answer

Honeywell furnace humidifier thermostat & other


sounds like to me you have a condensation pump attached to your hvac system. this can be used to pump water produced during the cooling of your house when in the a/c mode. if you have a typical bypass humidifier, you will have excess water running past the water panel and it must be sent to a drain of some kind. I would imagine the pump is being used to get your bypass water to the drain. another scenario may be that you have a 90% condensing furnace. if your exhaust pipe for the furnace is made out of pcv pipe, it is a condensing gas furnace. it will produce water when it is running. the water if from the combustion gases being condensed in the secondary heat exchanger. this is normal. some condensing gas furnaces will draw combustion air from inside the house and some will have a second pvc pipe that is used to pulll combustion air from the outside of the house. either way, it is not dehumidifying your house. the humidifier should be able to keep up if it is runnng properly. you should have water running out the bottom drain of the humidifier any time the fan on your furnace is running and the humidistat is calling for humidity. if this is not happening, it is not wired properly.

Jan 16, 2009 | Honeywell Power Humidifier: Furnace...

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