20 Most Recent Aprilaire 600 Humidifier - Page 7 Questions & Answers

it may be kickin on but you dont get water there is an metering device {little piece of plastic with hole} that cuts down on waste water it may be clogged to see if it is opening take a screwdriver and see if when humidastat is trying to work that you have a slight magnetic pull on the opposite end where water lines go

You will intend 50 down the send-offs of blower? If so when blower is located beyond you have 110V to go to work humidifier you you will obtain 110V??? You can also place the jumper through humidustat with the blower further and to see that makes.

http://www.aprilaire.com/themes/aa/en/manuals/600a.pdf look at page thirteen in this manual there is allready a inline filter on the unit. hope this helps

Make shure that the the filter in the bottom of the valve is clean. Turn water off use a 1/2 & 7/16 wrench to take apart the bottom connection on valve use a small screwdriver and push the small screen out and clean then put it back together.Use the same wrenches and take apart the top of valve clean inside valve and clean small orfice in plastic water line put back together. Make shure 24volts is gettin to valve you should her a click when furnace is running or fan. It may take a couple times to clean. Hope this helps

solenoid valves dont just burn up just like that you have a recurring restriction due to bad water.Check the saddle valve at the water heater first then check for postive water flow at inlet to the solenoid valve,if you have water flow the valve is clogged with sediment.

Have a licenesed hvac contractor to fix your problem.

When your unit is on normal the outside unit works and the inside only the fan runs. your heat pump does not remove any humidity when it operates so the installation cotractor did not wire it to operate then. you can change the wiring on the humidifier to operate all the time by wiring it to the fan (g) terminal then it should work just turn it all the way to the lowest humidity when you are in cooling mode.

http://www.aprilaire.com/themes/aa/en/manuals/600a.pdf here's the link fo the manual. read page thirteen about the inline screen that the unit has. it may be clogged up.

http://www.aprilaire.com/themes/aa/en/manuals/600a.pdf Read page thirteen and there is a inlet water filter that may be cloggeed. Let me know if you need anything else.

I have the same type of Aprilaire humidifier unit with automatic temperature sensing control. My unit also displayed the 'E3' code. The HVAC technician was on site today and replaced the temperature sensing unit that is located outside the house. The humidifier is functioning normally once again.

is it getting 24 volts? sounds like its not being told to open. check for voltage at the two wires going to the solenoid.

You should take out that aprilaire and throw it in the garbage or return it to who you got it from. Ask them why they didn't offer you the best humidifiers available. The only way to truly control humidity in your home without running your heat is a steam humidifier. Autoflo makes a good one also honeywell makes a new one. I have installed a honeywell tru steam in my own home and a few customers it hasn't lived up to its advertising. The auto flo has never given me any problems with customers.

It is possible you may have wired it wrong. Make sure your humidifer is not robbing power from your thermostat. This would explain when your humidifer makes a demand to come on it robs power from your t-stat making it lose its call for heat. Wire your humidistat to the "w" terminal and the common terminal so it only runs on a call for heat. With the bypass type of humidifier you purchased it wont do you any good to run when the heat isn't running anyway. If you want an independent operation humidifier you need a steam type.

If it is running constantly even when turned the low voltage circuit has been wired incorrectly.

I've been working on the Aprilaire 110 unit today, after encountering the same problem. Here's how I fixed it: First, with the humidistat turned to 0%, I turned off the water supply saddle valve all the way (all the way to the right)--and then turned it back on all the way (all the way left). Still no water flow. Second, I slightly loosened the inline valve nut on the discharge side of the solenoid on the side of the 110 unit. Water began flowing, so I tightened it back up; and now the water flows freely. Conclusion: You may have some mineral deposit buildup in your lines, as I apparently did.

It is not likely to be caused by the selonoid valve. The selonoid is designed to be either open or closed, so if the unit is calling for humidity, it should be 100% open allowing as much water as possible to flow through. In cases of a bad selonoid, it will usually stick open or stick closed, but I have never heard of one allowing too much water through. Check to make sure your drain is clear and that the incoming line to the humidifier is positioned properly on the inside of the unit. If this doesn't solve the problem, it could be that the water line to the humidifier is too large, allowing more flow than the unit is designed for.

If the unit was installed with a saddle valve, which is most often the case, you could try turning down the water pressure by tightening the valve a bit. Just follow the copper water line from the humidifier back to the main water line and look for a little valve that you can turn. Try to tighten this enough so that you still have water flowing, but at the proper volume so that it doesn't overflow and splash all over.

Turn that pin to the left and that will open the valve to allow water to flow through it. If it starts to leak the all you need to do is tighten the nut that were the water is coming out with a wrench, be carefull it wont take much to tighten.

Is there 24 volts coming from the humidastat to the solinoid?

J-

I had this problem several years ago. In order for the water to flow, the outside temperature sending unit must indicate to the controller that it is less than 60F. If not, the unit will not operate outside of test mode. Check the temp outside where your sending unit is (could the sun be heating that side of the house?) and ensure that the circuit to the sending unit is working. I had a bad wire splice inside a wire nut stopping the circuit. Took me a long while to figure it out.

If the outside temp and your sending unit circuit is ok, I wish you luck on your troubleshooting.

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