Question about Aprilaire 550 Humidifier

2 Answers

Why am I getting water blowing into the furnace and flooding the floor? This is happening after 12 years of service.

The repair man said it is because the furnace is to big for the house. My furnace is 125'000 my house is1400 sq ft . I purchased the furnace with the humidifier.

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  • Aprilaire Master
  • 1,033 Answers

Hello, this can be either a clogged drain line or the tubing supplying the water into the humidifier is cracked. The size of the house has nothing tomdo with the water leaking into the Furnace.

Posted on Jan 05, 2013

  • Tim Dowden Nov 25, 2013

    there is a very small orfice in the hose where it inserts into the solenoid. Over time the water either enlarges the hole in them or they fall out if the line is removed. Order one on ebay and replace. Should fix you problem.

  • Robert May 15, 2014

    Most likely this is something you can fix yourself. Just clean out the drain line and check that tubing has no cracks.

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As these guys have said, I doubt the problem is the size of your house. It would seem to me that the issue is the possibly the drain line being clogged. That might be a simple fix that could save loads of money right there for you.
http://www.proctor-mech.com/services/

Posted on Mar 21, 2015

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Posted on Jan 02, 2017

  • 8 Answers

SOURCE: Have solenoid: MOPD 125, WATT 2.3, VOLT 24/60, for

I am guessing you have sent 24 volts to the solenoid directly and the the solenoid did not activate?

If you have not send power directly

If the solenoid does not activate that way more then likely needs a new solenoid.

Posted on Mar 06, 2009

  • 2 Answers

SOURCE: aprilaire 600 humidier: water continuously runs

sounds like you may have it wired to a continuous power source vs one that shuts off with the furnace. The most common wiring is red to C & white to W

Posted on Jan 13, 2010

  • 118 Answers

SOURCE: Loud vibrating noise when the furnace blower starts up.

Try closing damper slightly between humidifier and furnace????

Posted on Feb 04, 2010

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