Life Any Hvac techs out there - Page 5

**J Diddy** · 02-01-2011, 02:35 PM

Is it possible that snow build up in the exhaust pipe going through the roof could prevent the inducer motor from activating thereby preventing my heater from coming on?

Alton deFlat · 06-10-2011, 07:58 AM

Quote:

Originally Posted by kepp

HVAC question here - the motor on our air cond unit (the unit that sits outside with the fan) just went out yesterday. The motor was replaced three years ago almost to the day and it cost $400 ($320 for the motor). My question is, if I can get my hands on a motor, is it easy to replace myself? Is it really something that requires a trained technician?

Also, does anyone know how I can get a motor?

If you are careful, you should be able to replace the motor. MAKE SURE YOU SHUT OFF THE POWER, but it's fairly simple. Most of those motor are 1/4, 1/3, or 1/2 horsepower, and they will also have a capacitor, that I would change at the same time. Capacitors will have a MFD rating stamped on them (i.e. 5 mfd, 370 volts). You will need this information. If you have a Grainger or Johnstone Supply close to you, that would be a good place to start. The fan blade, may be a lttle difficult to remove, especially if the shaft has rusted. You might need to use WD40 or similar to loosen it.

If you can take the faulty motor with you, that would help them, and you can also compare it in the store. You might write down model and serial number of your outdoor unit, and take that info with you.... just in case.

EDIT: and oh BTW, capacitors can hold an electrical charge once removed, even with the power off. Don't place your fingers across both leads. If could give you a small jolt.

**cdcox** · 06-10-2011, 08:04 AM

Are you sure it is the motor that is bad and not just the capacitor?

kepp · 06-10-2011, 08:20 AM

Quote:

Originally Posted by cdcox

Are you sure it is the motor that is bad and not just the capacitor?

No, I'm not. How do I tell that? Place a finger across both leads?

**cdcox** · 06-10-2011, 08:30 AM

Quote:

Originally Posted by kepp

No, I'm not. How do I tell that? Place a finger across both leads?

Your tongue will work better.

Easiest way is to look for any bulges. I think you can also use a volt meter, but I forget the details, so you better google it.

02-01-2011, 02:35 PM
J Diddy Don't Be A Dick Join Date: Aug 2001 Location: Joplin Casino cash: $6817192	Any Hvac techs out there Is it possible that snow build up in the exhaust pipe going through the roof could prevent the inducer motor from activating thereby preventing my heater from coming on?
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06-10-2011, 08:04 AM	#62
cdcox www.nfl-forecast.com Join Date: Sep 2000 Casino cash: $2261769	Are you sure it is the motor that is bad and not just the capacitor?
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