Lower speed on blower motor is gone or the control board that controls heating speed is bad one or the other has happened
I guess these don't last forever and they do fail now and then. Is there some way I can test these to see which one may be pooched or should I swallow my pride and ask a local electrican to check it for me?
yes if low speed tap is energized then it would be motor problem
Well I guess I'ld better stick to cabinet making as that's what I've done for the past 30+ years. Thanks for the professional advice!...Accept!