This thing is getting the better of me. I installed a model 700 three years ago. Due to space I had to install the unit on the return side but did use the hot water supply. I used the manual setting (no outside temp sensor). The first year it was great and would actually condense the windows rather easily and I could easily get 40-50%. I have a Gerneral Air relay that detects the blower on so I could just turn the blower on 24x7 for the first day to speed the humidification up. The next year I washed the pad and re-installed and it still worked but not nearly as well. This year I installed a new pad (paint side up) and am getting zero humidity. I have verified the water is going over the filter and the fan is running. I also don't see any obvious leaks on the return side that would be drawing fresh air. According to Aprilair the water output at the drain should be 1 quart in 2-5 minutes. Mine was nowhere near this so as a test I removed the restrictor orifice completely and then got that high water output but still no humidity. When it was working I could put the hygrometer at a vent and it would climb. Right now it actually goes lower than the ambient house (16%, house is 19%, outside is 24% @ 40F) Sorry for the long read

Hi all... first post! I wonder if you could help me out with a question regarding a humidifier unit that I had installed in my home today. First of all, here's what I had installed: Generalaire flow-through bypass humidifier model 1042 - [URL="http://www.generalaire.com/catalog/categories/652-Legacy_Humidifiers/items/8560-Model_1042_LH_Humidifier"]link[/URL] Generalaire humidistat model M3 - [URL="http://www.generalaire.com/catalog/categories/569-Accessories/items/13509-M3_Select_Control_Humidistat"]link[/URL] As it stands, the humidity in my house is quite low (Calgary). I've set the humidistat in the middle of the comfort zone, and can tell that the humidifier is engaged and the solenoid valve is open. The problem is that the solenoid valve is open, even when the furnace is not operating (ie. the desired temperature has been reached). So, I've got a constant drip of water coming from the copper pipe, through valve and into the unit and then down through the drain tube into the drain in my basement floor. I should note that all this time, the desired humidity level has not yet been reached. It seems like the only way to stop water flowing into the humidifier is to turn down the humidistat. Is this the way it's supposed to be? It would seem to me that the valve should close, thereby stopping the water flow while the furnace is not operating? Of course when the furnace cuts in, the valve should open and start water flowing again. Thanks in advance for your help!! Coles notes: - Had humidifier installed onto furnace - Solenoid valve is always open, even when the furnace is not operating - Solenoid valve closes when desired humidity has been reached - Even when it's too dry, shouldn't the valve close when the furnace is not operating, and open again when it cuts in? Edit: My instincts are telling me that the wiring is incorrect... here's a picture of the board in my furnace. The two black wires going into C and R go to the humidistat (one of the wires powers the solenoid valve before going to the humidistat, the other goes directly to the humidistat). [IMG]http://img.photobucket.com/albums/v166/Barayolayosa/IMG_0076.jpg[/IMG] [IMG]http://img.photobucket.com/albums/v166/Barayolayosa/IMG_0078.jpg[/IMG]