HVAC Questions? Ask an HVAC Expert for Answers ASAP
OK, I unplugged the 16 wire and left the smaller one plugged in; Thermidistat set to "cool" with fan "on" and the blower does nothing. (I thought I heard a relay on the board click, though.)
There is a sticker that says GE 04/18/98 BF06 3TCV.
Thanks for all your help. Tim (airheatman) seemed to think that the module was correct, however I did a search (after looking at the links you provided) and I agree with you that the module is probably not the correct one.
I did numerous searches and I can't find the "BF06 3TCV" module; all I can find is "BF06 2ZVU" and "BF06 39VM" which are both 230v modules so this would lead me to believe that (even though I couldn't find it) the module the Tech installed is probably for a 230v motor as well. The 5 pin plug on my motor has the jumper from 1 to 2, which according to the ECM manual that you sent me means that my motor is 120v (page 11/12).
Again thanks for all your help, I hope I can get this all resolved tomorrow.
No problem with any delays; I've been busy doing other things as well.
Just wish I would have known about the part numbers a little sooner; I had the blower out and the module off. No big deal, they come out easy enough.
Monday I called the Tech and asked for my old ECM back. He asked if there was a problem and I said "yes, you installed the wrong ECM on my motor and it doesn't work properly." He wasn't real happy and told me that he had pulled that one off of a motor at the shop and thought it would work. I explained that these are programed specifically for certain models and this one was obviously wrong. I told him that I intended to fix it myself and his services were no longer needed.
I ordered a new thermistor (the part that burn off) from Mouser Electronics (EPCOS Inrush Current Limiter part # XXXXX; about $5.50 for the part and about $8.00 for shipping). I got the part today, got it soldered in and everything put back together. It was about 90 in here when I got the AC running and about a half hour later it's down to 85; slowly but surely cooling off. At least the blower is moving plenty of air now.
Thanks again for all your help. And for anyone else who has the ECM on their variable speed blower "go bad" : check for a burned off thermistor. If your (or someone you know) soldering skills are OK, then I'd recommend doing this (for about $15.00) before you replace the entire ECM (for about $400.00 plus a service call and/or repair charges). It's not hard to do, and so far, so good.