Carrier model 58CTa070-12 furnace/ac unit built in 03' blower motor will not turn on. On the tstat if I switch fan mode to ON while in cool mode or heat mode nothing happens. If I go to heat the flame turns on but no blower, if I go to a/c the outside compressor and fan turn on, but no blower. Funny thing is that both the heater and the compressor seemed to run w/o knowing the blower wasn't on. The compressor ran for like 4 minutes at least and was starting to create a puddle and noticeable condensation on the side of the furnace.
So to tried to test the fan by jumping the 24v red wire to G on the tstat terminals, nothing, went downstairs jumped the 24V to G on the terminals, nothing (I made sure the dummy switch was depressed so the furnace was on). From the furnace panel instructions for a test mode I jumped the 24v to the test/twin and the test mode started and no blower motor ever came on, the compressor and furnace however did at one point. When the fan should come on I used a voltage tester to probe the wires for electricity going to the fan motor and it didn't show anything was going to it (the tester didn't go beep beep beep..), nothing was on the capacitor with the brown wires going to and from it either.
So it sounds like the motor is probably good since no juice is going to it, and maybe the capacitor (seems like the wires come from the blwr motor for it though) or some relay on the PC board is bad. Smacking the relay for the BLWR didn't seem to do any good. I've read similar threads in the forum and they were close to my issue, but did not have the exact same issue. Any help or troubleshooting steps would be appreciated. Attached are some images, hopefully big enough to make out. The schematic doesn't appear to come out too great, the manual is at http://www.docs.hvacpartners.com/idc.../58ct-11si.pdf
and the page is 45. Will try to get it in a easier format to access.