Where should a voltage reading occur if the FR contacts are in good condition while testing the indoor blower motor?

When testing the indoor blower motor, it is important to identify the correct terminals where a voltage reading should be expected when the FR (fan relay) contacts are in good condition.

In this context, if the FR contacts are functioning properly, the voltage reading will occur between terminals labeled MV (which typically represents the motor voltage) and C (common). This is because when the FR closes, it sends power to the blower motor, energizing it and allowing it to operate.

The correct terminals, MV and C, indicate that the motor is receiving the necessary voltage from the system to function effectively. Understanding this is crucial for diagnosing issues with the blower motor or verifying that it is receiving sufficient voltage for operation.

The other terminals mentioned do not correspond to the expected voltage reading during this specific test. For instance, terminals R and G would typically involve the thermostat circuit, while other terminal combinations do not pertain to the motor's operation as directly as MV and C do.