Question about Hunter 33255 Humidifier

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Hunter model 33257 humidistat says hi unit will not turn on unplug wait humidistat goes to low then comes on 15 seconds then turns off again will not come back on

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  • Dan Getz May 28, 2012

    I have the same problem wit a green light "HI" then displays dashes and turns off after around 10 seconds. Did you find a solution to your issue? This Hunter Humidifier was purchased in 2011. Any help would be appreciated.



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Could be the flux capacitor

Posted on Apr 21, 2009


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After refilling tank of my 34357 Hunter Humidifier, I set humidity level so it exceeds the actual humidity in the room, but the unit will not run when I turn it on. The green lite is on. I tried unplu

do you hear the motor humming like it's trying to run? If so it's most likely because the water impeller at the bottom of the assembly attached to the motor is frozen because of mineral deposits. If this is the case, soak the assembly in vinegar for about three days to loosen it up. If the motor isn't turning/ humming I would imagine the humidistat is faulty. Good luck, they don't have replacement parts other than those listed in the manual or online

Jan 27, 2015 | Hunter 34357 Humidifier

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Honeywell humidifier short cycles

It's not uncommon for duct work in an older home to Bang as the furnace cycles due to age. The humidifier banging while turning on and of is mostlikely the solenoid valve; if the solenoid is bad it is actually to your benefit to replace the entire humidifier as the solenoids are very expensive, 50%+ of a new humidifier. Plus you get the 5 year parts warranty on the new unit instead of just one year on the solenoid. If you don't want to replace the entire unit you can replace the Humidistat, and that should fix the on/off cycling, however a new humidistat is included with a new unit, which again is more cost effective. They are easy enough to replace as a do it yourselfer, especially when replacing an existing unit. I hope this helps you.

Dec 29, 2012 | Honeywell HE360A1027 Whole House...

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Hello! I have a 33201 Hunter Humidifier and for some reason does not run. It turns on (light comes on) and I can hear a faint hum if I put my ear to the unit... but again it does not come on. It does...

Hi, Mark! It may be clogged with a calcium scale build up from the tap water you use. Unplug the unit and empty any water that is the tank.Mix a 50/50 solution of White Distilled Vinegar and Bottled Distilled Water. Mix enough to fill the tank. Let it soak for 2 to 3 hours and turn the unit ON. If it starts functioning as it should, allow it to run until the tank is 3/4's empty. If it doesn't operate as it should, allow it to soak overnight. And try again, following the procedure above. After it has run to the 3/4 empty point, turn the unit OFF. unplug it and dump the remaining solution. Refill the tank with Bottled Distilled Water and run again, for at least 2 hours. This with flush the system of the vinegar and water solution.

To avoid having this problem again, always use Bottled Distilled Water, rather than tap water.

Hope this helps to solve the problem. Have a Happy Easter!

Apr 22, 2011 | Hunter 33201 Humidifier

1 Answer

I just installed a Honeywell HE 360 Humidifier I purchased at Home depot. I replaced a Aprilaire model 110 . I have a 120v power duplex that is hot with the furnace blower motor, on so I assumed the sail...

Hello, in order to turn your humidifier on with the furnace the 120 volts coming from your humidifer you must hook it up to a step down transformer, then the transformer will provide 24 volts to you humidistat and solenoid valve. So you need a wire from the HUM on your control board to transformer primary side and a wire from neutral on the board to primary side of transformer. Then you need low voltage wire from secondary side of transformer to humidistat from humidistat to humidifier.

Feb 20, 2011 | Honeywell HE360A1027 Whole House...

1 Answer

My Aprilaire 550 is bone dry. How do I know if its the Humidistat or Celinoide?

Turn off the water to the humidifier

Disconnect the water line to the inlet water valve (the solenoid), catch any excess water or drips in a small container

Turn the water back on slowly and see if water flows through the open line (the one you just disconnected - catch the water in a small bucket)

If you have water to the valve, it's probably the solenoid valve - you can test this by reconnecting the water line and turning the humidistat all the way up. You should hear a click as the solenoid tries to open. If it clicks and no water comes out it's the valve. If there is no water to the valve, you'll need to detrmine the reason(s). Sometimes the small line tap valves commonly used with humidifiers can plug up or malfunction. If you try to repair or replace the tap valve, make sure the water is turned off.

If no click, it could be the humidistat or there is no power to the unit.
If the humidistat is bad, you won't hear any click and no power will be sent to the solenoid valve. In that case, the humidistat may be defective.

Depending on your comfort level and knowledge, you can try applying power directly to the valve by bypassing the humidistat, but only try this if you are comfortable working with electricity. The voltage should be around 24 volts (in the USA) , which is low, but requires some knowledge.

Dec 29, 2009 | Aprilaire Humidifiers

1 Answer

Hi I need help understanding the controls to my humidistat. I have a honeywell a/c unit so I'm assuming the gold colored humistat next to it is also honeywell. I bought a digital temperature and humitiy...

The higher the % of RH, (relative humidity), the more humid the house will be. I would disregard the temp part of the dial, and focus more on your comfort. Adjust it up daily until you reach a satisfactory humidity level. Hope this helps

Dec 19, 2009 | Honeywell Power Humidifier: Furnace...

1 Answer

HE220A direct wiring to protech 62-24084 control board

it is best to use a seperate transformer for the hummidifier, but in some cases you can use the low voltage t-stat wire that runs your furnace, you will need to have one wire run to common, and the other to the heating side of your low voltage, normally its the red wire hooked to the w circuit of your terminal board, if you do decide to go with an extra transformer, make sure you you have it wired to bring on the humidifier only when the unit calls for heat, hope that helps

Jan 19, 2009 | Honeywell HE260A1010 Whole House...

3 Answers

Aprilaire 560 humidifier

Hello All,

Was having a similar problem. Disconnected the source line and opened saddle valve. I was getting water to the solenoid but nothing out the other side. My humidistat doesn't have a "test" setting, it's either off or the highest humidity. I held the outbound line in my hand and experimented with adjusting both sadlle valve and humidistat. I didn't get any water until I opened the saddle valve MUCH further than I thought was necessary and turned the humidistat to near the highest setting. Once I had water coming though I experimented with the setting on the humidistat, turning it off and then slowly increasing the humidity until the solenoid clunked and water started coming out. I would recommend anyone having this same problem to open the saddle valve all the way (I was surprised how many turns that took) and set the humiditstat to it's highest setting.


Dec 15, 2007 | Aprilaire 550 Humidifier

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