Need advice on blower motor/fan

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lhw455

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Hi all, new homeowner who inherited a bit of an old HVAC system. The problem I've been having is that the blower motor/fan doesn't spin up i.e. when I set the fan to "on" on the thermostat, it mostly doesn't spin up, I just hear a humming sound. When it does start, it runs for awhile and then shuts off (and the motor gets quite hot to the touch).

I initially replace the capacitor (which I believe is a run capacitor) with the equivalent (it was labelled a GE capacitor, 370V at 5 MFD.

This didn't solve the problem, so I've now taken out the motor to search for a replacement. It's a GE 5KCP39JGN226BS (old). I managed to find a replacement second hand motor (same model) off eBay (not sure if there is a modern equivalent, but my Google skiils failed me searching for a compatible model.

Anyway, while I wait for the replacement motor, I noticed that the motor has a label (i.imgur.com/hcPdkne.jpg) which includes the text "7.5/370v" with a * next to it that says "5/370v required for some units"

So my question is the following: should I be using a 5 MFD capacitor or a 7.5 MFD capacitor. Also, is there a replacement model motor I could look into i.e. how do I go about sourcing a replacement should the "new" one fail again?

Thanks in advance
 

WorthFlorida

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The difference shouldn't matter. A good 5mfd the motor would still run up to speed anyway. The motor itself is probably worn out. Here is a replacement motor that would work but you may want to call then=m for rotation direction. It is labeled GENTEQ (a GE logo).

(https://www.genteqmotors.com/)

(http://www.electricmotorwarehouse.c...tor-5kcp39hgaa37at-3585/#sthash.rsxzprjS.dpbs)

FYI...GE no longer makes small motors. That division was bought out by Regal-Beloit Corp. They were licensed to use the GE name but the agreement was done back in 2005. When searching for a replacement motor, just search on HVAC fan motor. Other than voltage and hp, rotation is most important.
 
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lhw455

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Never know whether a Like and a reply saying thanks is correct, but thanks! I've already ordered a second-hand GE motor, same model, so I'll go with that, just wanted to confirm I had the right capacitor. But if that one fails, I now know where to source a new one from!

Thanks
 
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