Carrier gas pack - Model 584bnw048080aabg


  #1  
Old 02-10-13, 12:30 PM
F
Member
Thread Starter
Join Date: Feb 2013
Location: Us
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
Carrier gas pack - Model 584bnw048080aabg

Hello,

i am trying to figure out how to determine if the heat exchange unit is bad on my heat pump. The symptoms is that it now only blows outside temp air. It used to once we initially discovered the problem, would blow warm air for about 2-3 min, then it would blow outside air temp.

Does anyone have any advice, the unit is the original unit installed in 1991. I am pretty handy and have the tenacity to dive in, any idea where I can find a users manual or schematic for how I can disassemble.

Thx

frog
 
  #2  
Old 02-10-13, 01:34 PM
Houston204's Avatar
Forum Topic Moderator
Join Date: Oct 2009
Location: Texas
Posts: 7,574
Received 50 Likes on 46 Posts
http://www.docs.hvacpartners.com/idc...584b.18.2d.pdf


Does the compressor continue to run when it stops heating?
 
  #3  
Old 02-10-13, 06:35 PM
F
Member
Thread Starter
Join Date: Feb 2013
Location: Us
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
Carrier

Not sure, I actually tried it today and watched it, it never ignited. No flames, nothing. The fan kicked on like normal.

Thx
 
  #4  
Old 02-10-13, 08:42 PM
Houston204's Avatar
Forum Topic Moderator
Join Date: Oct 2009
Location: Texas
Posts: 7,574
Received 50 Likes on 46 Posts
Did the induced draft motor start?

21 years is a very long life for a gas package unit. I'm surprised that the heat exchanger has lasted this long. I would expect a roll-out switch lockout. This unit appears to have a non resettable roll-out switch.



This is not a heat pump.
 
  #5  
Old 02-13-13, 03:12 PM
F
Member
Thread Starter
Join Date: Feb 2013
Location: Us
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
Thanks for getting back to me, if the little motor on the bottom with the fan blades (see attached picture) is the motor you are speaking of, then yes, it does run.

I did not see the IDM on the schematic.
 
Attached Images  
  #6  
Old 02-13-13, 09:09 PM
Houston204's Avatar
Forum Topic Moderator
Join Date: Oct 2009
Location: Texas
Posts: 7,574
Received 50 Likes on 46 Posts
Do you feel air moving out of the induced draft motor grill on the side of the unit?
Do you have a meter?

 
  #7  
Old 02-15-13, 06:00 PM
F
Member
Thread Starter
Join Date: Feb 2013
Location: Us
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
Hello Houston, I want to first thank you for spending time with me, I do appreciate it.

1. Yes, there is air blowing out of the side vents
2. And yes I have a digital volt meter

One note, I was looking at the unit while it was running and it appears that there is a constant spark right below the heat exchange tubes, not sure if that is normal or not, but thought I would tell you.

.

thanks

Gary
 

Last edited by hvactechfw; 02-15-13 at 06:15 PM. Reason: The idea of the forum is to keep the info here so that others can benefit too
  #8  
Old 02-15-13, 06:43 PM
Houston204's Avatar
Forum Topic Moderator
Join Date: Oct 2009
Location: Texas
Posts: 7,574
Received 50 Likes on 46 Posts
Sounds like you need to clean the pilot orifice.

Usually need a 7/16" or 3/8" open end wrench to unscrew the pilot tubing from the pilot assembly to gain access to the pilot orifice.
 
  #9  
Old 02-16-13, 10:46 AM
F
Member
Thread Starter
Join Date: Feb 2013
Location: Us
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
ok,once I do that, do you still think the heat exchanger is cracked? As I mentioned, the first symptoms when we first noticed a problem (1 yr ago), was that it would blow warm air like normal than after 5 min or so it would just blow outside temp air.
 
  #10  
Old 02-16-13, 11:54 AM
Houston204's Avatar
Forum Topic Moderator
Join Date: Oct 2009
Location: Texas
Posts: 7,574
Received 50 Likes on 46 Posts
You can clean the pilot orifice and flame sensor, restart it and observed the sequence of operation.



The 1/4" tube from the gas valve should lead you to the pilot orifice.



Your roll-out switch is not locking out or it wouldn't reset. This still leaves the limit switch. Is the evaporator coil clean?






It is a 1991 gas heating unit. Having it serviced or replaced isn't unthinkable.
A carbon monoxide detector should be present in any house with a gas heating unit.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: