The AC blower motor stopped working in our HVAC unit. Here is what happened.
I have a tenant who called and said: We have no heat. It was 18 degrees outside and getting colder. I told her to switch the unit from cool to heat.
She called back and said: Still no heat. I responded with: Please switch it to emergency heat.
She called back again and said: Now, I smell smoke.
My response was: It is okay since the heat has not been turned on before. It is dust burning off the heat strips. It will go away.
She called back again and said: The smoke is not going away. I responded: Ill be right there.
When I got there, the blower motor on the HVAC unit was not running. I squirted some oil on the bearings, got the motor running and went looking for a replacement blower motor.
This blower motor was part of a three-year-old Goodman HVAC unit. The heat sequencer on this same unit failed several months ago for no apparent reason. This unit has a 10 year warranty.
I called my AC guy. Unfortunately, I was unable to get hold of him. I knew I had to get this unit fixed that day because we were having unseasonably cold weather, so it called for plan B.
None of the supply houses in our town had a blower motor. I had to drive to Nashville where there are bigger supply houses to get one.
Here is the process to determine that the blower motor is the problem and then how to replace it.
Here is the unit. – - – - – - – - –
- Take the electrical access panel off.
- Next, remove the panel covering the blower motor.
Things to determine a course of action:
- Is the blower running? If the answer is no, then check – -
- If there is voltage to the motor? (There should be a wiring diagram on the inside of the electrical cover.) If the answer is yes – -
- Turn the electricity to the unit off.
Actions to do with the electricity OFF!!!!
- Can you spin the motor by hand? If the answer is no, you have a bad motor.
- Does the motor spin easily? If the answer is yes, maybe the motor is not bad.
In my case, the motor was difficult to turn. Since this motor is 1/4 HP (which is a low Horse Power) and was difficult to turn. The motor was bad.
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