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Motor hums but not turn

What do I do

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Furnace mounted humidifier when set thermostat to operate automatically it kicks the solenoid on but when the furnace shuts off the solenoid stays on When I turn it off at the thermostat it shuts off


Without knowing the exact humidifier and how it's wired one can only guess.

There are many different ways to wire a humidifier, one method involves the use of a current sensing relay monitoring the operation of the furnace fan motor. Another uses the HUM terminals on the furnace to control the humidifier.

Has the humidifier ever worked properly? If so, a component has failed. If not, it wired incorrectly and you need to refer back to your installation manual.

Oct 28, 2016 | Humidifiers

1 Answer

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

1 Answer

Great lakes hot tub humming sound


You either have a locked pump, impeller or stripped impeller on the pump shaft. Remove the jet pump assy and repair the pump and or impeller. You can also replace the pump assy.

Apr 30, 2014 | Holmes Products HM495-UC Humidifier

1 Answer

Hot tub makes a humming sound when you turn on the jets


Blower motor went out and blew fuse. You will have to replace the blower motor.

Apr 30, 2014 | Holmes Products HM495-UC Humidifier

1 Answer

Is Aprilaire 500M suppose to turn on when furnace motor turns on?


The humidifier should turn on and off with the blower motor of the Furnace. This can be done by wiring the the humidifier to the HUM terminal on the furnace control board and then stepping down the power with a transformer. If the humidifier has it's own tarnsformer then a current sensing relay can be used by attaching it to the blower motors common wire.

Jan 13, 2013 | Aprilaire Humidifiers

1 Answer

Have a aprilair 550 for some time. Installed a new Lennox G61MP furnace and the technitions failed to reconnect the wiring that powers the humidifier. Need wiring schematic. Does humidifier transformer get...


Hello, yes the transformer will get a 120 volts from the Furnaces control board, there should be a terminal labeled HUM on the control board. You need to bring 2 wires one from HUM and one from a nuetral tap on the board to the line side of the transformer, this way every time the blower motor on the Furnace turns on the humidifier will aswell.

Aug 23, 2011 | Aprilaire 550 Humidifier

2 Answers

Have two Hunter humidifiers - model 34357-about 5 years old #1, fan just quit running. All else seems normal. #2, Unit starts running and then stops with the humidity reading at max. Since the...


This is the manual for your de-humidifier. It lists the part number for the power and fan control switch and it states they have a 5 year warranty.
http://www.hunter-humidifiers.com/manuals/34357.pdf
This is their link for support:
http://www.hunterair.com/suppo.95rt
They have a msrp on the unit at 84.95. What I wuld do is definately check into the warranty ting with them and I'm sure you could probably salvage one ot of the two units. Replacement parts may not be cost effective. You can test the motor from #1 in #2 and, if it runs, you know it has to be a switch or a start capacitor, etc. I guess it all depends on how much tinkering you want to do. I would think there is a good chance there is a wiring diagram for the motor somewhere inside the case or on the motor. Good luck.
Dave

Jun 05, 2011 | Hunter 34357 Humidifier

1 Answer

When I turn on the unit, it humms and the fan doesn't turn. Help.


If you can easily get to motor I would unplug unit and check motor to see if it turns freely. If it does I would plug the unit back in and see if the humming noise is coming from motor. Ifyou decide that the motor is the source of the noise and you can do so safely spin the fan and see if it will try to run, If it does I would unplug unit and give fan motor and blades a thorough cleaning. Clean any hair,lint or dust from aaround motor shaft. A small motor like these does not take much to slow or stop them. Plug it back in and try it. If it stiil does not work I would replace the motor. Hope this helps. Thanks

Nov 19, 2010 | Bemis 697 400 Humidifier

1 Answer

Honeywell HE 260A1010


control board has eac terminal . will provide 110v to hum transformer anytime fan running.

also can pick up current sensing relay to sense blower power up and will then power the Hum. transformer.

Oct 25, 2008 | Honeywell HE260A1010 Whole House...

2 Answers

My aprilaire 600 humidifier stays on when the blower shuts off


Make shure the 24 volts is hooked up to power that is only powered up when the blower is running. Some furnaces have a HUM terrminal on control (make shure the HUM is 24 volts some are 120 volts then you must use the transformer supplied with the AP 600). You can use a RP # 50 relay that senses current only when the furnace motor is running on the heating speed. Hope this helps

Oct 30, 2007 | Aprilaire 600 Humidifier

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