How to test blower motor and resistor A blower motor problem is easy to fix if you understand how your particular system is wired. Here are the blower motor fix steps: To determine which blower motor wiring diagram, first determine if you have a 4 speed blower or variable speed Many automatic temperature controlled systems have variable speed blowers and those don’t use a blower motor resistor; they use a variable speed controller. If you have a manual system where you vary the temperature, you probably have a 3 or … Read More
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