My American standard 5000 furnace's motor kicks off After a short time will not stay running enough to get to a higher temp, just fires up fine then will shut off then kick back on then shut off never running to the desired temp... Motor was changed by someone and that's when this problem started..is it the wrong motor ?! Motor is running in the correct direction and wires seem right too .. Seems like the motor is hitting a overload and shutting off .. Is that it?!Did they install the wrong motor?