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Carrier Humidifier Model No.49BG013210 - Recently our local servicemen replaced the filter on the above model. The water valve was turned on but there is no circulation of water. I do not feel any moisture in the house. I noticed a sort of water tank (Model No. 554941) on the side of the furnace. I am not sure of its function. Would be grateful if you could resolve this problem. K. Rao Munjuluri

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Hello

Check all supply registers of the unit, which are wide and flat and located on your walls. Make sure that they are open and unclogged. Inspect the cleanliness of the unit and of the distribution pad.

Observe the fan's function. Spray lubricant on on the motor shaft of the fan unit to ensure it rotates properly.

Take off the small pipe between the solenoid valve and the humidifier and check if the opening is blocked. If not, you may need to replace the solenoid valve.

Check whether the thermostat has been set to a heat position and that the temperature is set above the room temperature. Check that the furnace is getting power supply and the circuit panel to see if all the circuit breakers are in an "ON" position. Check all the return air grills on the wall, make sure they are not blocked.

Check whether the thermostat is set to "COOL." Check also the circuit breakers and that they are in an "ON" position. Make sure that the blower motor in the furnace is running, as it should be when the thermostat has been set in a cool position.

Posted on Nov 05, 2010

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1 Answer

Low voltage to selenoid valve how do i correct this?


change and check another carrier LBP Humidifier

Jan 21, 2012 | Carrier LBP Humidifier

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I think my humidifier does not work. I switch the control button to outside temperature rating and inside the house the humidity level is 11%, which is to low. What should I check? How do you know that...


On the water line running to the Humidifier there should be a On/Off valve. It may be a saddle type valve. In any event, this is how you can tell if the water to the humidifier is turned ON. Look for either plastic or copper tubing running from a water source to the humidifier.

Feb 23, 2011 | Carrier LBP Humidifier

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I have a carrier humidifier model BG49. When the furnace turns off due to reaching room temp. The water still continues to flow into the reservoir of the humidifier. Is this the correct operating...


Hello, The humidifier should turn on and off with the furnace's blower motor, If the humidifier keeps continously running than the solenoid valve is stuck open and should be replaced.

Jan 30, 2011 | Carrier LFP Humidifier

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I have a carrier humidifier model #HUMCCLBP18-A. I shut the water off to install a new filter, and now I cannot get the water back on. I'm not sure if I need to turn the water opener to the right or to...


First I have a question for you. Is the shut off valve a saddle type valve or inline? A saddle valve will mount directly on the water line and be held in place with two machine screws. They will generally have a t type handle. The inline is just what you would think in that it is part of the water line. This type of valve may have the same t handle. Either way to shut valve off you turn clockwise and counterclockwise for on. Off to the right .
Most of the valves used for this application are a needle valve they have a pointed end that seals into a recess in valve body when closed. It's possible that when you shut it off the valve stem broke or just stuck in off position. If there is a small hex nut around the valve stem where it goes into valve body then you can shut off water supply off to inlet of valve and remove the nut and try to pull stem up with small pliers.
Either way if you can't get valve to open then you can easily replace them. Either the saddle valve or compression valve should cost under ten dollars. If you do replace then just follow instruction that come with valve.I hope this helps you some. Thank you

Dec 17, 2010 | Carrier Humidifiers

1 Answer

760 aprilaire humidifier does not let water to the filter. I have cleaned and checked the lines in and out of solenoid.


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  1. No click at the solenoid valve indicates an electrical problem. Contact your heating and air conditioning dealer to further check the electrical components of your Aprilaire Humidifier.

  1. The click sound at the solenoid valve indicates there is electricity to the solenoid valve. By turning the dial of your humidifier control to a setting above the “click point” you should see water coming out of the drain line within a few minutes which would indicate your humidifier is working.

  1. If the solenoid valve makes a click sound and there is no water draining from the unit, this would indicate the flow of water is being obstructed.

1. To determine if water flow is being obstructed, turn the dial of your humidifier control to the off position. The first location you would want to check for an obstruction would be at the saddle valve located on the water line supplying water to the humidifier. When checking the saddle valve, you want to make sure it is completely open. This can be done by turning the valve all the way to the left. If anything is clogged, it can be dislodged by turning the saddle valve all the way to the right and back to the left. Once this is done, turn the humidifier control dial above the click point and you should see water coming out the drain line.


If water is still not coming out of the drain, check the orifice and in-line strainer to make sure they are not clogged. The orifice is located in the tube on the discharge side of the solenoid valve and the in-line strainer is located on the inlet side of the solenoid valve. You may clear the orifice by inserting a needle through the small opening. Clean the strainer by running it under warm water to dislodge deposits or replace. After clearing and re-installing the orifice and strainer (be sure to double wrench all water connections), turn the humidifier control dial above the click point and you should see water coming out the drain line.

Mar 10, 2010 | Aprilaire Humidifiers

1 Answer

Our aprilaire humidifier is only 4 years old and it does not seem to be working. We have static in the house and when I did test mode it never drained water like it was supposed to. Any ideas what I can do...


Hope this helps, check and see if humidistat is set to 35% humidity and that bypass damper on humidifier is in the open position or winter position.(humidistat is usually located on cold air return duct near furnace). Next, replace humidifier media pad, remember to replace media pad (filter) annually, you also may want to clean any lime deposit out of humidifier housing with a solution of warm water and white vinegar before installing your new media filter.Remember to turn power off at side of furnace when cleaning humidifier and replacing media. Before installing new media turn power back on to furnace, set humidistat to the on position, turn furnace thermostat above room temp., and inspect humidifier to see if water is running from top,(you may want to have a bucket under humidifier when checking for water), if you see water running, turn power back off to furnace, properly install new media filter, reconnect humidifier cover & set humidistat to 35%. If you do not see water present, check water supply valve to humidifier and make sure its turned on. If water supply valve is open, then check water supply tubing for blockage.And the last things to check is to make sure all registers through out your home are open and not blocked by any objects, also make sure furnace filter is cleaned, if none of this works refer to installation manual to see if humidifier was sized and installed properly, Good luck.

Mar 03, 2010 | Aprilaire 600 Humidifier

1 Answer

Too much water wasted


The oriface is sized for the proper water flow for the model you purchased. If you are dissatisfied you could throttle down on the saddle valve to restrict the water flow to the unit.
Good luck
HVAC Teacher

Jan 31, 2009 | Aprilaire 600 Humidifier

1 Answer

Carrier SBP Humidifier is not working


I would suggest turning up the humidistat (usually located on the the return air duct to a higher setting and listening for a "click" noise on the supply valve. If you do hear a click but dont see / hear any water than the culprit is likely the valve itself.

Nov 22, 2008 | Carrier SBP Humidifier

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