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 07-27-2010, 05:42 PM   #1
Newbie
 
Join Date: Jul 2010
Posts: 25
Rewards Points: 10
Default

A/C Not blowing cold air!


Good evening!

My A/C is blowing out air, just not cold air. Fans inside and out are all working fine (this happens every summer). I turned off the electricity inside and out and opened the side panel. I found a burnt wire attaching to the capacitor but the capacitor does not seem damaged with the exception of rust. It is not swollen or leaking. Could the burnt wire be the problem? It seems as if the repairmen that come out every summer are always replacing something electrical.

Thanks!

A/C Not blowing cold air!-5.jpg

A/C Not blowing cold air!-3.jpg

A/C Not blowing cold air!-4.jpg

A/C Not blowing cold air!-get-attachment.aspx.jpg


Last edited by hearmeroar874; 07-27-2010 at 05:47 PM. Reason: Trying to add more pics
hearmeroar874 is offline   Reply With Quote
Old 07-27-2010, 06:01 PM   #2
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 26,047
Rewards Points: 3,758
Default

A/C Not blowing cold air!


Looks like someone put in a single capacitor, instead of a dual.

Look at the wiring diagram. It should show if you need a dual or single capacitor. or has someone installed 2 capacitors.

beenthere is online now   Reply With Quote
Old 07-27-2010, 07:43 PM   #3
Newbie
 
Join Date: Jul 2010
Posts: 25
Rewards Points: 10
Default

A/C Not blowing cold air!


Sorry it took me a while to reply, but yes there are 2 capacitors. The other I believe is connected to the fan.
hearmeroar874 is offline   Reply With Quote
Old 07-27-2010, 09:25 PM   #4
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 26,047
Rewards Points: 3,758
Default

A/C Not blowing cold air!


Those connectors came become loose and brittle from heat and age.

Cap may or may not be weak.
beenthere is online now   Reply With Quote
Old 07-27-2010, 09:27 PM   #5
Newbie
 
Join Date: Jul 2010
Posts: 25
Rewards Points: 10
Default

A/C Not blowing cold air!


I am going to start with replacing the burnt wire any further suggestions after this?
hearmeroar874 is offline   Reply With Quote
Old 07-27-2010, 09:28 PM   #6
Member
 
Join Date: Oct 2009
Location: Nebraska
Posts: 2,362
Rewards Points: 1,000
Default

A/C Not blowing cold air!


Replace all those rusted connectors while you're in there. Poor or loose connections burn the wires like that.
Marty S. is offline   Reply With Quote
Old 07-27-2010, 09:39 PM   #7
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 26,047
Rewards Points: 3,758
Default

A/C Not blowing cold air!


What Marty said.
beenthere is online now   Reply With Quote
Old 07-27-2010, 09:44 PM   #8
Newbie
 
Join Date: Jul 2010
Posts: 25
Rewards Points: 10
Default

A/C Not blowing cold air!


Thanks! Do you think that this is why the AC is not blowing cool air? Or is it more than this?
hearmeroar874 is offline   Reply With Quote
Old 07-27-2010, 09:54 PM   #9
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 26,047
Rewards Points: 3,758
Default

A/C Not blowing cold air!


Well. With that wire off. The outdoor unit can't run. So yes, its causing no cooling.
beenthere is online now   Reply With Quote
Old 07-28-2010, 02:22 PM   #10
Newbie
 
Join Date: Jul 2010
Posts: 25
Rewards Points: 10
Default

A/C Not blowing cold air!


Ok, let me rephrase my question. I disconnected the wire myself so I am aware that it won't work without it being reconnected. My question is this, due to the wire being burnt up the way it was, is that the possible reason for the non-cooling and should I go ahead replace the capacitor even though it appears to be in good shape?
hearmeroar874 is offline   Reply With Quote
Old 07-28-2010, 03:19 PM   #11
Member
 
Join Date: Nov 2006
Posts: 291
Rewards Points: 250
Default

A/C Not blowing cold air!


Quote:
Originally Posted by hearmeroar874 View Post
Ok, let me rephrase my question. I disconnected the wire myself so I am aware that it won't work without it being reconnected. My question is this, due to the wire being burnt up the way it was, is that the possible reason for the non-cooling and should I go ahead replace the capacitor even though it appears to be in good shape?
Why have you concluded that the capacitor is in good shape? Just because it hasn't exploded, bulged or leaked does not mean it's in good shape.

I would guess that wire got too hot because of high current flow, a very hot cap connector, excess resistance or combination of all 3. That could have come about because the capacitor's electolyte is drying out or it's developing internal shorts. Maybe even it's capacitance has changed due to age.

The short answer is yes. Fix the connector AND replace the cap.
hennyh is offline   Reply With Quote
Old 07-28-2010, 04:59 PM   #12
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 26,047
Rewards Points: 3,758
Default

A/C Not blowing cold air!


All burnt wires should be replaced. Unless you tested the capacitor. You don't know that its in good shape. It may be what caused the wires/wire to burn.
beenthere is online now   Reply With Quote
Old 07-28-2010, 09:38 PM   #13
Newbie
 
Join Date: Jul 2010
Posts: 25
Rewards Points: 10
Default

A/C Not blowing cold air!


Thank you those were the answers I was looking for. Wires have been replaced but it did not make a difference therefore as you all suggested the cap will get replaced.
hearmeroar874 is offline   Reply With Quote
Old 07-29-2010, 04:48 PM   #14
Member
 
Join Date: May 2010
Location: San Antonio
Posts: 432
Rewards Points: 330
Default

A/C Not blowing cold air!


was the compressor running? if the compressor was running and it was blowing warm air that would indicate a different problem.
NitroNate is offline   Reply With Quote
Old 07-29-2010, 06:17 PM   #15
Newbie
 
Join Date: Jul 2010
Posts: 25
Rewards Points: 10
Default

A/C Not blowing cold air!


Yes as far as I could tell the compressor is running

hearmeroar874 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
A/C not blowing cold air... rnorred13 HVAC 9 04-03-2014 04:03 AM
HEIL/ICP gas/electric self-contained unit -- blowing cold air, won't shut off AboveTheBULL HVAC 3 06-28-2010 07:23 AM
Help! Furnace blowing cold air. Thanks. crosely HVAC 0 11-30-2009 11:17 AM
Blowing cold air but not enough jimmmy4 HVAC 5 06-11-2009 05:42 PM
Furnace blowing cold air. rileyc HVAC 4 02-19-2009 03:18 PM




Top of Page | View New Posts

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