[img]https://cimg3.ibsrv.net/gimg/www.doityourselft.com-vbulletin/640x480/img_0937_0d1bde83a5fc68f234152848d4757de4fd5ebf3f.jpg[/img] I am replacing an existing Humdistat. There are two wires connected to the R and C terminals on the furnace panel that run to the old Humdistat. Per the diagram above, I connected the wires running from the furnace to the R and C terminals on the new Humdistat. I connected the two solenoid wires to the two H terminals. I connected the two wires from the outside temp sensor to the OAT terminals. No other connections are made. The R and G wires show 24 volts. The Humidstat powers on and call dealer for service light flashes. My multimeter shows no voltage on the two H terminals, even when humidity is set to high and I hear the click. Tried reversing the R and G wires and no joy. Also tried turning the humidity control knob to the far right to reset and still no joy. Any suggestions? Thanks!

Hello All, The condensation drain from my Air Handler was blocked. After digging up the PVC 'periscope' protruding from the ground next to my Heat Pump, I discovered a vertical pipe rise of more than 18-inches. Following removal of this vertical pipe, the water flowed freely. What I'd like to do, is let the water drain from the 18-inch depth down into the ground, rather than the uphill climb to the surface. I've thought of inserting a large diameter pipe or plastic container with drilled drainage holes, into the ground below the drain pipe level. But my previous experiences have resulted in the dirt passing through the holes and filling the container which results in pipe blockage. Even when I fill the container with rocks. Does anyone have suggestions how I can accomplish this without the dirt falling down and blocking the water flow? Thanks for taking the time to read my message. Tom