Blower would not work on heat or ac. Discovered one of the 60amp breakers was not working. Replaced it. Heat and blower would then come on but even when the temp got to the thermostat set, the blower would not shut off. I replaced the thermostat and it would still not shut off. I believe the heat strips shut off at the thermostat set point but not the blower. Blower would not turn off even when placed in the off position. Anyone help? Thanks