I have the 47-100436-04 control board on a Rheem RHSA HM2417JA air handler. The blower motor is running all the time. I have disconnected all inputs to the board with the exception of the blower red wire and the black wire (input voltage) to the relay. (I have continuity between all three connectors on the relay at all times) The blower still runs. I suspect the relay is shorted. There is aIso a connection on the relay that goes to the aux heat strip relay. The heat is also on all the time. Does the control board relay turn the heat strip on and off also besides controlling the blower motor? The replacement board (-05) does not have a connection for the heat strip. What should I do with this wire?

Hi, I'm looking to replace the cover of the A/C opening with the proper material. When I bought the condo it had some type of insulation cover. The cover was about 3/4" thick and it didnt bend, on one side it was white to match the white ceiling ( I threw it away because it was the original from the 70s and it was yellow already). I went to Home Depot, and they didn't have anything similar, so temporarily I used a thin board. Which in a couple of weeks it started to bend. Please let me know where can I get this type of foam boar / insulation or the type of name it goes by? also, whats the the name of those type of A/C that are mounted in the ceiling like mines? Thanks,