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 07-26-2011, 08:04 AM   #1
Newbie
 
Join Date: Jul 2011
Posts: 6
Share |
Default

Air handler - reverse polarity after changing capacitor


Air handler was blowing warm air. Changed fuses and capacitor- (on outside unit) everything seemed to be working nicely. - for a little while-

Now neither outside nor inside turns on, I took cover off handler and led flashes continuously meaning polarity reversed.

flipped C wires on capacitor even re-installed old (bad capacitor) but no luck Air handler not turning on..

what do I do?

ezhomeowner is offline   Reply With Quote
Old 07-26-2011, 09:37 AM   #2
Experienced
 
Jackofall1's Avatar
 
Join Date: Dec 2010
Location: Southern Michigan
Posts: 2,822
Default

Air handler - reverse polarity after changing capacitor


Welcome ezhomeowner, to the best darn DIY'r site on the web.

In order for anyone to help you diagnos your situation you will need to post a model number(s) of the unit you are referring to.

Mark

__________________
When its all said and done there is usually more said than done
Jackofall1 is offline   Reply With Quote
Old 07-26-2011, 12:04 PM   #3
Newbie
 
Join Date: Jul 2011
Posts: 6
Default

Air handler - reverse polarity after changing capacitor


This is the air handler. It is in the attic, the compressor is out side. I changed the capacitor. took old one to supply store and they gave me new one., New one is oval so I could not strap it in so I let it sit on the floor. It still looks perfect but now my air handler stopped working.

Specs

Brand: Payne
Manufacturer: CARRIER CORPORATION
Model Number: PG9MAA024060*
Fuel: Liquefied Petroleum Gases and Natural Gas
Input Capacity: 60,000 BTUH
Output Capacity: 56,000 BTUH
Efficiency: 91.5% AFUE
Energy Star Certified: Yes
Air Flow Configuration: Down
Electrical Phase: Single-phase
Combustion Type: Condensing
ezhomeowner is offline   Reply With Quote
Old 07-26-2011, 01:15 PM   #4
Newbie
 
Join Date: Jul 2011
Posts: 6
Default

Air handler - reverse polarity after changing capacitor


I went and looked again at the lights blinking and noticed that this corresponds to a code 24 meaning Secondary Voltage Fuse is Open..

Not sure how check this...
ezhomeowner is offline   Reply With Quote
Old 07-26-2011, 01:51 PM   #5
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 8,903
Default

Air handler - reverse polarity after changing capacitor


there is a purple 3 amp GM plastic auto fuse on the circuit board.
__________________
"Cut it twice and it is still too short".
yuri is online now   Reply With Quote
The Following User Says Thank You to yuri For This Useful Post:
ezhomeowner (07-26-2011)
Old 07-26-2011, 02:21 PM   #6
Newbie
 
Join Date: Jul 2011
Posts: 6
Default

Air handler - reverse polarity after changing capacitor


Little 3 amp fuse... 5 for 3.50 @ the supply store...

Fuse sits on electronic board by blower...
ezhomeowner is offline   Reply With Quote
Old 07-26-2011, 02:24 PM   #7
Newbie
 
Join Date: Jul 2011
Posts: 6
Default

Air handler - reverse polarity after changing capacitor


I found teh fuse and replaced it.

I guess now I gotta figure out what caused it to blow.. but it rained hard yesterday and we had a local power outage so perhaps the surge when the power cam back blew the fuse.

Thanks
ezhomeowner is offline   Reply With Quote
Old 07-26-2011, 03:05 PM   #8
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 8,903
Default

Air handler - reverse polarity after changing capacitor


VERY rare that happens. Carefully check the small low voltage wires going to the outdoor unit for fraying/brittle/dog or rodent chewing or deterioration.
__________________
"Cut it twice and it is still too short".
yuri is online now   Reply With Quote
Old 07-27-2011, 08:13 AM   #9
Newbie
 
Join Date: Jul 2011
Posts: 6
Default

Air handler - reverse polarity after changing capacitor


The capacitor was oval instead of round since the supply store did not have round.

The metal casing of the "cap" knocked against the brown fan wire ( happened again) when I shut the cover after replacing the fuse and blew the fuse again.

I wrapped the case in electrical tape and used plastic ties to secure the capacitor away from the open wires ends and attach it to totally insulated wires. ( i could not use the cap strap it was just to small for oval)

This seems to be working...

thanks

ezhomeowner is offline   Reply With Quote
Reply


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
Air Handler Motor Wiring brando1118 HVAC 13 06-18-2010 11:42 AM
Reverse Polarity scrubby18436572 Electrical 4 04-24-2010 08:53 AM
Will reverse polarity trip breaker?? Duane 70 Electrical 60 12-05-2008 10:18 PM
Changing reverse osmosis water filters awayeli General DIY Discussions 2 07-05-2008 02:20 PM
Reverse Polarity at the Subpanel adm060306 Electrical 14 07-09-2007 12:58 PM




Top of Page | View New Posts

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