Massive Heat Wave, AC not working. - HELP
I have a Duo Therm roof AC unit. Yesterday morning it was blowing cold air, but sounded like the fan was laboring. Ultimately, fan stopped working altogether. Even with AC off and just switching fa...
Forum Discussion
motc777 wrote:j-d wrote:
Your wiring looks right, given the two RED wires are on HERM and BROWN is on FAN.
I was mistaken earlier and will correct that post in EDIT: With the Dual Capacitor, COM should have 04 wires and I had said 03. Then 05 wires if you jumpered to a single FAN Cap and I had said 04. Since there are only 04 lugs on a capacitor terminal, the extra wire could go to the terminal on the single cap that you connected the jumper to.
I've heard of OP's shooting control box trouble down to a relay and they getting a relay from an electronic supply house. Even Radio Shack might have something.
I'll go look at that Control Box page on Chris Bryant's site. Here it is Linked
Hey take a look at page 16. It talks about a mechanical on/off selector switch. It says to "The air box should still be off. The electrical box needs
to be dropped from the template and switch cover removed.
Disconnect the wiring from the switch, (be
sure to note wire location for proper replacement),"
I have no idea what they are calling the air box. As for the control box in the ceiling, there are some relays, but they are all soldered onto the board.
The AIR box is the silver galvanized housing for the Circuit Board. The "Mechanical" switch/s is actually 8 or 9 DIP switches on the board that you turn on or off depending on the configuration of the AC/Heating system. Doug
