Universal condenser fan motor wiring

New techs have a common question of how to wire a condensing fan motor for 3 vs. Jesse Grandbois submitted this tech tip to help make it simple.

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Universal condenser fan motor wiring

This is by far the most common post-transaction question that we receive from customers that have recently purchased replacement condenser fan motors. Simply put, no — you did not buy the wrong condenser fan motor. This guide will explain how to wire your new condenser fan motor using a four wire setup or a three wire setup when using a single run capacitor or a dual run capacitor. If you recall from our residential cooling season guide , outdoor condenser units use a switch called a contactor. This switch is controlled by the thermostat and closes to complete an electrical circuit when electricity needs to be supplied to your condenser fan motor and compressor. Think of the contactor almost as a gatekeeper — two legs of volt electric supply need to flow through it in order for your system to function properly. Condenser units also use a component called a run capacitor. Dual run capacitors are used for both your condenser fan motor and your compressor. Single run capacitors are used exclusively for just your condenser fan motor or just your compressor. Like your contactor, your capacitor needs to be wired correctly in order for it to function properly. This will likely be back to your contactor. The brown lead with the white tracer will not be used for this setup. You can use a wire nut and electrical tape to tie it off.

Condenser fan motor replacement Sounds simple as we all have done 's. Share this Tech Tip: Facebook Tweet.

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New techs have a common question of how to wire a condensing fan motor for 3 vs. Jesse Grandbois submitted this tech tip to help make it simple. Thanks, Jesse! This one seems to confuse even experienced technicians, but it's actually very simple once you see it. As always, refer to the wiring diagram on the particular motor you are using. As you can see, the only difference is that there is no jumper from the contactor to the capacitor. They're joined inside the motor. The brown wire with the white stripe is only there for convenience. You will find that it either reads zero or very low ohms, proving that they are directly connected within the motor.

Universal condenser fan motor wiring

Service calls about condensing fan motor failure are quite common. Even though fan motor replacement is a standard procedure for residential split systems, it requires careful attention to safety and detail. This article will give you a step-by-step guide to replacing condensing fan motors. Along the way, we will also explain a few best practices for safety and an enhanced understanding of the process. One of the reasons why motor failure is so common is because there are many ways that it can fail. Some causes may include failing shorted, windings failing open, and bearing failure.

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Brown wire from the condenser fan motor to the other side of the capacitor opposite the jumper wire. The brown lead with the white tracer will not be used for this setup. Like your contactor, your capacitor needs to be wired correctly in order for it to function properly. I'll provide a diagram and explain the wires below. Good morning, You can also just jump common from original cap. What he said! As you can see, the only difference is that there is no jumper from the contactor to the capacitor. Safety is always the highest priority. Terms and Conditions Yes No. My thinking is the hook the white and black from the original motor for line 1 line 2 and then trying to figure out if I just send the striped wire or brown wire back to the original capacitor. Sounds simple as we all have done 's. Your email address will not be published. A squirrel or anything could get them!? Note that passwords are case-sensitive. How many fans are on this?

This is by far the most common post-transaction question that we receive from customers that have recently purchased replacement condenser fan motors. Simply put, no — you did not buy the wrong condenser fan motor.

Originally Posted by bwd Was it brown with white tracer or solid brown? Always use a separate Fan Capacitor when you can. Using a single run capacitor with a three wire setup:. Run and Start Capacitors. Errors The following errors occurred with your submission. Originally Posted by dandyme. Jesse Grandbois submitted this tech tip to help make it simple. Reason: when your dual run capacitor eventually gives out and you go to the store only to find they dont have any dual run caps available in your size but they do have two single caps to get you going again. The brown lead with the white tracer will not be used for this setup.