How to change or replace an Indoor Blower Motor 

I smelled burning smoke in the house when the fan turn on I thought it was the motor turned out blower motor was a ECM motor. Granger was $250 for the motor installed it and when tried to power it up the contactor was chattering. Replaced the contactor compressor turn on and shut off again the last time it smoked the new blower motor, and thermostat. AC guy came out checked the compressor it was shorted entire unit was trashed. Not only was I out the money for the blower I had to buy entire new unit $8800. My advice is get a good AC tech to do a full test on everything before buying parts. AC guy thinks the smoke was the electronics burning up smoke was being sucked inside the house.

I'm an AC guy (an a/c girl, actually. lol) and I agree with your suggestions. Most socket wrenches I have seen don't have rubber handles like his, and carelessly clanking around the capacitor like he did, with a metal tool will give you that little "jolt" he is talking about. Using a screwdriver with a plastic or rubber handle, along with the gloves you should be wearing, will give you good protection. Lay the screwdriver across the two tabs so that they are touching the metal screwdriver at the same time. (they just have to touch for a moment. You may have a flash of electricity and a pop sound - but that is rare.) If you have a dual capacitor, just lay the screwdriver across two, and then pick it up and rotate it, making sure to get each group of tabs (you don't need to touch each individual tab). Also, I discharge them even when new in the box. Someone could have returned it before you purchased. I know I am overly cautious, but I avoid injury and damage to equipment.

@@heidis8713 Back in the day used to be a electronic power supply tech I would repair power supplies had lot of voltage in them. We would charge up a cap leave it on someone's chair give them a buz everyone of us had been shocked by our jobs several hundred volts.

@@Mike-01234 that's hard-core. Lol 🤣 What were their reactions to it?

I use soap bubbles and sand paper :)

Pb blaster

I used silicone spray. Didn't hit rust until near the end of the shaft, took a little 400 grit emery paper to smooth the end of the shaft and the blower wheel came right off. The problem I'm having now is getting the belly band adjusted correctly. I had taken the old motor out without removing the bracket arms and tried to do the reverse to install the new. It's a bitch trying to true up the wheel in the housing. If I can't get it in the morning, I guess I'll take it all apart again and tighten the belly band first, then screw on the arms onto the housing, and save the set screw for last.

Now let us see if my brother can follow the directions like a woman would or improvise like a man is known to do....lol

Melody Dillard Melody, That is just so wrong but how can I argue truth. :) But remember, improvisation is adventure...

Lol

check your capacitor before u change it out.... if you have new unit and you don't smell a burn smell your motor probably still good.... a indoor fan motor need a good capactitor to start. change out your capacitor before u do this because they are design to last for 2 years at the most. that's how the HVAC industry work....

They only like $5

just get a universal motor.... they usually $69.00 and that's if you have a HVAC licence.... you can find it online if you don't have a HVAC licence, I paid a tech $400 to replace my motor, that's before I took up HVAC at my local community college.... never again will I pay that.. and another tip... local hvac contractors over charge for services, I felt like paying $2100 for 3 HVAC classes was worth it then paying a company $1000 to replace a $12 part... it's all about sales and money when dealing with a contractor that has a huge marketing budget.

It will pay off long term

meonetallguy Did you have a module ECM on your motor like ours? Then your capacitor would be internal.

onecrazywheel jafari

Did you physically pull the blower assembly out? Mine was mounted to the back of the whole assembly.. not visible without taking it apart. Recently had to change my capacitor as well.

*rewired

Depends on what side of the fan your standing on

If you have a 4 speed motor like mine, there is a possibility your control board is not putting out voltage to your high speed connector or you may have a loose connection at your board. Can check for voltage as soon as your furnace calls for the blower to come in which is a short while after the burners have been on.

only of you want to burn up the motor

I am very sorry for the late reply. The only way to accomplish this is with a 220 volt to 110 volt transformer with a v.a. rating that is 30% larger than the amp rating of the fan motort

Right. The one part that you actually want to see is the part they skip.