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. Using a single run capacitor with a three wire setup:. Safety is always the highest priority.

Thanks for posting! When blade was on the motor turned CCW and other motor was working. I'll provide a diagram and explain the wires below.

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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.

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.

1.8 cm in feet and inches

Condenser units also use a component called a run capacitor. 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. Cancel Changes. Also power feeding one cap and 3 wires on each terminal that could be wire nutted if you choose. I often use and recommend the three wire connection when wiring to a dual cap. Would motor work properly if I used the one wire and and ran it to cap in Unit like the last motor even though motor diagram asked for two? When blade was on the motor turned CCW and other motor was working. Originally Posted by bwd Do I remove it or is it safe to leave it. Simply put, no — you did not buy the wrong condenser fan motor. I will need to ohm for white to brown and stripped brown as well as black wire from the new Motor to find the least resistance if I do install the way the original was installed. The end. 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. Thanks, Kevin!

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.

Was it brown with white tracer or solid brown? Email Name Website. Please enter a password for your user account. On the new motor, you connected the brown wire to the original brown wire that goes to the capacitor in the electrical section. With that one lag of power being Yellow Black would be your common lag. Here's the 3-wire method: White wire from the condenser fan motor to one side of power on the contactor T1 and jumped to one side of the fan capacitor. You can use a wire nut and electrical tape to tie it off. Thanks, Jesse! Either cable tie it safely or plug it on to a common on the dual run capacitor. It providing one lag of the power to each cap. Simply put, no — you did not buy the wrong condenser fan motor. Using a single run capacitor with a three wire setup:. This is on the original motor. Olivia — Thank you very much for your comment. Run and Start Capacitors.