Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 02-12-2012, 04:38 PM   #1
Newbie
 
Join Date: Feb 2012
Location: St. Petersburg, FL
Posts: 2
Share |
Unhappy

New condenser fan motor runs slowly


I just replaced the condenser fan motor and capacitor (orig AO Smith F48P99A76, new Diversitech WG840204 - same specs) in my Goodman outside unit. The original fan stopped turning, had high resistance between leads (700 - 1300 ohms), hard to turn by hand. The orig fan had 3 leads, one to the control board, one to the contactor, one to the cap 'fan' terminal (dual cap). The new fan had an extra lead going to the cap which I connected to the 'com' on the capacitor.
When I turned the unit on to test, the fan seems to run slowly, not 825 rpm. I measured 220 VAC between the motor's wires at the contactor and the circuit board. I don't have an ammeter.
Could you please suggest how to determine the problem?
Thank you!

ptmuller is offline   Reply With Quote
Old 02-12-2012, 04:46 PM   #2
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,778
Default

New condenser fan motor runs slowly


The brown wire with a white strip doesn't get used, if you wired to a dual run cap.

beenthere is offline   Reply With Quote
The Following User Says Thank You to beenthere For This Useful Post:
ptmuller (02-12-2012)
Old 02-12-2012, 04:57 PM   #3
Newbie
 
Join Date: Feb 2012
Location: St. Petersburg, FL
Posts: 2
Default

New condenser fan motor runs slowly


Thank you soooooooo much!!! That did the trick!!
ptmuller is offline   Reply With Quote
Old 09-02-2013, 09:24 PM   #4
Newbie
 
Join Date: Sep 2013
Posts: 1
Default

New condenser fan motor runs slowly


Quote:
Originally Posted by ptmuller View Post
I just replaced the condenser fan motor and capacitor (orig AO Smith F48P99A76, new Diversitech WG840204 - same specs) in my Goodman outside unit. The original fan stopped turning, had high resistance between leads (700 - 1300 ohms), hard to turn by hand. The orig fan had 3 leads, one to the control board, one to the contactor, one to the cap 'fan' terminal (dual cap). The new fan had an extra lead going to the cap which I connected to the 'com' on the capacitor.
When I turned the unit on to test, the fan seems to run slowly, not 825 rpm. I measured 220 VAC between the motor's wires at the contactor and the circuit board. I don't have an ammeter.
Could you please suggest how to determine the problem?
Thank you!

Hi - interested in how you found that condenser fan motor (WG840204), as I need to replace an F48P99A76 on my goodman as well. Were you familiar with pexsupply and just did a search on the specs? It's a great find, less than 1/2 price of the A.O. unit.
Which cap did you use with it?
Is it still running well?

Thanks!
mdostie is offline   Reply With Quote
Reply

Tags
condenser fan motor


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Carrier a/c condenser fan motor still running slowly after thermostat is satisfied GetYourShineBox HVAC 18 06-14-2013 11:26 AM
Condenser fan airflow direction?? nicksab HVAC 8 09-20-2011 09:24 PM
Carrier Condenser Unit Screwed? gimmes name HVAC 6 07-24-2011 07:05 AM
Condenser fan motor spinning slowly or not at all utbigrod HVAC 1 06-08-2011 09:00 PM
Goodman Fan Condenser Replacement Help bigjohnstud4200 HVAC 2 07-03-2010 01:54 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.