Customer stated furnace popped breaker whenever calling for cooling. Maintenance man said furnace would start up in heat and run. However technician tested theory and system popped breaker when calling for blower in head and cool. Informed customer of fault and offered option hc23b-e to replace board blower wheel and motor. Customer chose option b. Technician retrieved parts and performed repair. Cycled system in both heating and cooling modes. System cycled on and off properly each time with no cause for concern