A very simple post, but I need to swap out this old style Aprilaire auto humidistat for a new Model 60, I tested the resistance on the ODT, Voltage coming into the stat from the furnace board, voltage to the solenoid, etc. and it all checked out. I believe I just have to run a W wire and change the R and C at the furnace board. I run into a lot of humidifiers with issues, just curious how often you guys come across faulty humidistats vs solenoids, etc. ? Thanks!

Posted by nerdygirlmechanic at 2021-02-21 17:27:39 UTC