How do you test this filter to determine if it has failed?
The way to check the filter is by checking for 120 vac from black to white wire on the control board side. If there is not 120 vac then the filter is bad.
Is this filter assembly a capacitor for motor noise?
Answer Hello Randy,
Without actually talking to one of the engineers who helped design the machine, it's almost impossible to say whether the filter is used to prevent noise from entering the electronics from the power supply line or if the filter is for preventing noise in the machine from getting into the line. You see, during the design of the machine, the engineers add to the original design to compensate for issues they find during testing. They generally don't publicize the issues that cause extra components being added unless it adds a feature for the customer.