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How To Test Blower Motor Relay

Blower motors are a common part of many industrial and commercial applications. They are responsible for generating pressure in compressed air or gas to drive various equipment, such as fans and pumps. When these motors fail, it can lead to full or partial loss of power, which can cause serious consequences. In this blog post, we will discuss how to test blower motor relays and identify any problems before they become a problem.

What is a Blower Motor Relay?

A blower motor relay controls the operation of your heating and cooling system’s blower motor. When it fails, your air conditioning or heating won’t work. To test your blower motor relay, start your engine and let it idle for a few minutes. If the fan doesn’t turn on, your blower motor relay is probably bad. If the fan does turn on, you may need to replace your blower motor relay.

How do I Test a Blower Motor Relay?

If you are experiencing problems with your blower motor, it is most likely due to an issue with the relay. Testing a blower motor relay is a simple and inexpensive way to determine if the problem is with the relay or the blower motor itself. To test a blower motor relay, remove the cover and inspect the contacts for wear or damage. If there is damage to the contacts, replace the relay. If there is no damage to the contacts, then the problem may be with the blower motor itself. To test a blower motor, turn it on and check for abnormal noise or vibrations. If everything looks normal, then you may need to replace the blower motor.


If you’re having trouble with your blower motor, it’s likely that your relay is fried. In this article, we will teach you how to test your relay and determine if it needs to be replaced. By following these simple steps, you should be able to fix your blower motor without any difficulties. If you still have questions about the repair or need additional assistance, don’t hesitate to reach out to a qualified mechanic.