Question about Aprilaire 550 Humidifier
I have now replaced ALL the parts on the humidifer (wiring, hum, solenoid, humidistat, current sensing relay). It still does not work properly. When the furnace comes on, the humidifer does not come on. I can wait until the blower comes on, turn the humidistat down and back up, it clicks and then stays on until the blower turns off. So all parts work properly, but the system does not turn on by itself without my turning it down and back up to get the click. It almost seems like the sensing relay sould be atached differently. I am at my end of my ability (not much there to begin with on electical parts). I hope someone else has had a similar issue. We are really dry in our house.
You may be havig problemm w/ the current sensing relay, try bupassing the current relay and see if the hum. comes on and if it comes on the try rapping the wite wire from the main blower 2 times. hope that helps
Posted on Feb 09, 2009
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Posted on Jan 02, 2017
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