Question about Aprilaire 550 Humidifier

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Lime scale build up and slime in bottom of filter tray

Unit is 10 years old and never have had this problem. Dry lime scale also showing up in furnace filter which has never happened before.

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If your water is suddenly evaporating into limescale, your local water company may have switched to a different water source, or your water softener device is out of salt. The limescale can be easily cleaned with vinegar and a sponge, but this will keep occuring unless you use water that doesn't contain disolved calcium. Try getting an RO water filter and use that water.

Posted on Mar 15, 2014

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1 Answer

I can't get the pad out to change. How do I do that?


if this is the bypass model there is a screw at the bottom of the cover that needs to be loosened. then the cover will flip up to expose the tray that holds the pad. take the tray out and squeeze the tabs on the black filler port to remove it. once the tray is out the top distribution tray can be removed by pulling the lower part off the tabs on the distribution tray. once they are apart remove old pad and wash both parts very well. You may need to scrub off the calcium build up or soak it in CLR to loosen scale. Once you have done this put the new pad in and clip the black filler port back on and test the humidifier.

Oct 31, 2013 | Honeywell HE265 Humidifier

2 Answers

Can't remove all that scale on this v745a humidifier. thanks


Mix a 50/50 solution of White Vinegar and Bottled Distilled Water (enough to fill the tank). Pour the solution in and let it sit for 30 minutes, Then start the humidifier and let it run until almost all of the solution has been used. Turn the unit OFF, empty the remaining solution and fill the tank with Bottles Distilled Water. Turn the unit ON and run for 30 minutes. This will flush out any of the remaining solution. The remaining water should be disposed of and in the future, use Bottled Distilled Water, rather than tap water. That way you will not have to worry about calcium and mineral build up at all. Plus, the mist that's generated will be totally void of any harmful minerals.

Hope this helped you solve the cleaning issue. Please let me know. Thanks!

Apr 19, 2011 | Vicks Warm Mist V745A 1 Gallon Humidifier

1 Answer

Lime build up on coil has to be cleaned weekly how do i prevent so much and many times cleaning the coils is their a additive i can add or device to prevent


You could add an inline water supply filter. That would help some, since it appears you have a hard water situation. A 50/50 solution of white vinegar and water will clean the existing lime scale. Adding a whole house water softener is also a good solution.

Hope this helps solve your problem.

Mar 15, 2011 | Honeywell HM509H8908 Humidifier

1 Answer

Have aprilaire #760 ,changed water panel, and turned furnace on and water started pouring out of the bottom of furnce? lots of water---


Typically, we find that the most common reason that you start to see leaking from the humidifier is that the water panel is not changed frequently enough. We do recommend that the water panel be changed once every humidifying season. We find a majority of our customers do this maintenance typically at the start of the humidifying season.

Here are the things to check when troubleshooting a power humidifier, which is leaking:

1.Position Of Unit On Plenum
Is the unit level (let to right)?
Is it plumb (front to back)?

2.Feed Tube
Is the Feed Tube tightened or is there a crack in the tube?

3.Position Of Scale control insert-
Is the base of the scale control insert sitting firmly in the drain spud at the base of the housing?
Does the bottom of the scale control insert have a taper to it to direct water to the drain spud?
Is the Scale control insert positioned correctly? The scale control insert has a front and a back. The back of the water distribution tray has an indentation in it to allow for clearance of the nozzle, which is attached to the top of the base. If reversed, and forced into place, the water distribution tray will break off the nozzle attached to the water feed tube and potentially the housing, causing water to leak

4.Water Panel Assembly-
Are there aluminum strands hanging out of the scale control insert?
Is there a gap between the top of the water panel and the water distribution tray for air to go through?
Is the colored dot on the water panel, up?
Is there a consistent coating on the Water panel, or are there shinny spots or clumps of coating?

5.Water Entrainment (Water Blowing out of the Humidifier)-
Are there signs of entrainment? Mineral build-up on fan blade, shroud, inside of cover?
Is the static pressure in the plenum over .4w.c.? If so, entrainment and leaking could occur.

6.Missing Orifice
If there is no orifice in the unit, the water entering the system could flood the panel. To check
for proper water flow, a quart jar should fill at the drain line in about 2 ½ minutes for a red or blue orifice, 5 minutes for a white or yellow orifice.

7.Drain line-
Is the drain line plugged?
Does it have a good downward slope?
Is it teed with any other drain lines?

If the above items do not resolve the existing leaking we would recommend contacting the customer service line at 800-334-6011 for further technical support.

Regards,



Tracey Hadju
Customer Service Specialist
Research Products Corporation
www.aprilaire.com

Oct 25, 2010 | Aprilaire 700 Humidifier

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

Fan motor seems to be running backwards. Installed in 1999.Always maintaned. Overall worked OK until this past year. Many problems with water leakage. When I opened and checked fan direction, it was moving...


The fan on the model 700 does rotate backwards compared to your typical fan operation. This fan will pull air from the duct verses pushing air into the duct. There are several things that may cause your humidifier to leak. The most known reason for leaking is the water panel/filter is not being changed frequently enough which should be at least once every heating season. You also want to confirm that you are utilizing an authentic Aprilaire water panel.
  • Is the Feed Tube tightened or is there a crack in the tube?
· Is the base of the scale control insert sitting firmly in the drain spud at the base of the housing?
· Does the bottom of the scale control insert have a taper to it to direct water to the drain spud?
· Is the Scale control insert positioned correctly? The scale control insert has a front and a back. The back of the water distribution tray has an indentation in it to allow for clearance of the nozzle, which is attached to the top of the base. If reversed, and forced into place, the water distribution tray will break off the nozzle attached to the water feed tube and potentially the housing, causing water to leak
· Is there a gap between the top of the water panel and the water distribution tray for air to go through?
· Is the colored dot on the water panel, up?
· Are there signs of entrainment? Mineral build-up on fan blade, shroud, inside of cover?






Mar 02, 2010 | Aprilaire 700 Humidifier

1 Answer

House is too dry


remove the cover and replaced the water pad and clean the water guide on top of filter and lower drain case by drain hose,then make sure the fan is operating and the water inlet and outlet lines are lime build-up free

Jan 01, 2010 | Aprilaire 700 Humidifier

1 Answer

I have a 550 ...I have 3 questions. 1. Can I


1.yes you can service it yourself the 550 takes a number 10 pad I recomend the oem pads for there strength and durability. You need to clean the bottom tray of any lime scale I use a stainless scrunchie. the top tray has a sandy grit surface that should stay there, just clean away the lime scale. Then shut water valve off to the unit remove the incoming line from the solenoid valve and use a dental pick to remove the strainer,clean this out thouroughly of any debri and return it to its home and reconnect the line. Next go to the other side of the solenoid valve and remove the compression nut there blow on the tube to make sure the orifice is clear if not use a orifice drill the same size and clean it out. Return the tube and tighten the compression nut. If all nuts are tight turn water back on (if you have a needle valve which most people use even though there against code, you may need to tighten the packing nut) and check for leaks. Set humidistat till it clicks for testing(this is a manual type with numbers 15% to 45%) then turn on furnace. Depending upon which furnace you have some are tied into the circuit board others have a current sensing relay attached to a 24 volt transformer. You should here the solenoid thump when the furnace kicks in or blower starts. If not you need to check for voltage at the solenoid the 2 wires there will read 24 volts. If not you may have a faulty current sensing relay or other problems. If all work set humidistat to 35% and watch your relative humidity in the house. You may have to adjust as it gets cloder to a lower humidity

Have at it my fingers are cracked enough from cleaning humidifiers

Tinner
Sunsetmech

Dec 14, 2009 | Aprilaire 550 Humidifier

1 Answer

Aprilaire 700 leaks water from bottom of case


Install new water panels yearly. On the new panel make sure that the painted dot on the edge of the panel is on the top when you install it.
Always clean the distribution tray and the frame. Make sure the notch on the edge of the distribution tray faces away from the furnace. Make sure the humidifier was installed level. Keep the drain tube opening clear. Insure there is no blockages in the drain tube.
Good luck
HVAC Teacher

Feb 10, 2009 | Aprilaire 700 Humidifier

1 Answer

Need to clean the filter


http://homeappliance.manualsonline.com/manuals/mfg/vicks/v3100.html

This is the link to your manual.
Daily Maintenance
1.
Turn switch to OFF position and unplug the cord from wall outlet.
2. Lift the Water Tank from Base. Carefully remove the Water Tray from the base being
careful not to damage the delicate Wicking Filter. Empty excess water from the Water Tray
without removing the Wicking Filter. Remove the Tank Cap and drain any water from the
Water Tank. Rinse the Water Tank with lukewarm water after each use. Wipe accessible
surfaces of the Water Tank and Water Tray clean with a soft, damp cloth.
3. Do not immerse the Base in water. For storage, wipe dry with a soft, clean cloth. Keep
water away from the Air Outlet.
4. Do not leave water in the Water Tank or Water Tray when unit is not in use as it may
result in the build up of mineral deposits and bacteria that can inhibit the output
efficiency of the humidifier. Please note that if water remains in the Water Tank for more
than a day or two, bacterial growth is possible.
5. Replace Water Tray with Wicking Filter. Then replace the Tank. Humidifier is now ready for
use.
Weekly Maintenance
Removing Scale
1.
Remove the Water Tank and empty any remaining water from the Water Tank.
2. Turn switch to the ON position, either low or high speed, and operate Humidifier until the
Wicking Filter is thoroughly dry.
3. Turn switch to the OFF position and unplug the cord from wall outlet.
4. Remove Wicking Filter from the Water Tray by carefully lifting straight up taking care not to
tear filter.
5. Remove the Water Tray from the Base. Fill Water Tray with undiluted white vinegar. Let
stand for 20 minutes.
6. Dampen soft, clean cloth or sponge with undiluted white vinegar and wipe out Water Tray
to remove scale. Do not use soap, detergents or abrasive cleaners.
7. Rinse the Water Tray thoroughly in clean warm water or put in top shelf of dishwasher to
remove scale and vinegar before disinfecting the Water Tray.

Disinfecting the Water Tray and Tank
1.
Fill tank with 1 teaspoon of household bleach in 1 gallon of water. Let stand twenty (20)
minutes, shaking vigorously every few minutes, drain and rinse with clean water until the
bleach smell is gone. Dry with a clean cloth or paper towel.
2. Wipe the Water Tray with a soft cloth dampened in the bleach and water solution. Rinse
the Water Tray thoroughly or place in dishwasher before proceeding.
3. Wipe all exterior surfaces of the Base with a soft, dry cloth. Do not immerse the Base in
water or use water to clean the base. An electric shock may result or the humidifier may
be damaged.

Hope this helps.
Good Luck.

Dec 01, 2007 | Vicks V3100 1.2 Gallon Humidifier

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