The little thing that looks like a pump is actually a valve.
Might want to do some diagnosis. See if the valve is getting 24
VAC when it needs humidity. Most HVAC repair guys are totally
qualified to fix this.

--

Christopher A. Young
You can't shout down a troll.
You have to starve them.
..

"EvenStephen" wrote in message
...
: My ten year old furnace has an Aprilaire humidifier (Model 550)
on it. It
: has quit working. I clean my furnace filters monthly and oil
the motor as
: required, but I completely forgot to clean the in-line strainer
that is on
: the humidifier. I tool it apart and cleaned it but the
humidifier still
: does not pump water through the system I'm guessing that the
humidifier
: "pump" was water cooled and has burnt out. Before I go buy an
replacement
: part, could it be something else? Thanks!
:
: