Works fine on 1 - 3. On setting 4, it runs about ten seconds, and trips the breaker.
I've read the other threads. Here's what I've done: Replaced the resistor, swapped breakers, swapped hi-speed relay. When I replaced the resistor, there is an L-shaped shroud under it. It was facing the blower motor, and that's how I reinstalled it. Is it to keep airflow off the bottom of the resistor, or is it installed the wrong direction, and it's actually a heat shield for the plastic housing? Could that be my problem, or do I need a new blower motor? Thanks.