Anyone else having trouble with these? I have replaced two on units that were less than one year old. Both were blowing fuses on 24 volt. These units only had a sequencer and relay. I thought at first it may be a short in t-stat wire but after disconnecting all t-stat wires and connecting red to green at the airhandler it would pop the fuse. Relay good, both primary and secondary volts good. Motor solved the problem in both cases.