Just how old is my furnace?


  #1  
Old 01-21-21, 09:21 AM
G
Member
Thread Starter
Join Date: Jan 2021
Posts: 4
Received 0 Votes on 0 Posts
Just how old is my furnace?

Morning all,

New here so please excuse my dumb questions.
I bought this house in 95 and have never changed either th furnace or A/C. They work fine for years but now the transformer is sticking on the furnace. Its the old York (Borg-Warner).
Model # CG-105-B3N
Serial # WO-160141
I'm usually pretty good tracking things down on the internet but heck I'm stumped with this one. The oldest that I could find was 71 and it was not even close in the sequence numbers.
What I need is the transformer. Its sticking. After the heat turns off the fan will stay running (for days).unless i whomp the transformer with my cell phone then it will shut down. Im looking
for this transformer.
175-200101-11 CJ
025-15756C
3/4HP 125/250V A
E33034
40va TRANSFORMER
SEC.24V. N.E.C. CLASS2
Yup has a few numbers. I have tried most all the parts houses and none can find either the model or part number?
Thanks
 
  #2  
Old 01-21-21, 10:27 AM
Join Date: Jan 2009
Location: United States
Posts: 825
Received 36 Votes on 34 Posts
Any 24VAC 40VA transformer will work
but does not sound like a transformer issue please show a picture of the part that needs to be "slapped" sounds more like a sticking relay or contactor
 
bulova voted this post useful.
  #3  
Old 01-21-21, 10:38 AM
Grady's Avatar
Forum Topic Moderator
Join Date: Jan 2005
Location: Delaware, The First State
Posts: 14,381
Received 35 Votes on 33 Posts
Your description of the "transformer" with all of those specs sounds like some kind of fan center relay. If you can post a picture or three it might help us help you. Add in a pic of the wiring diagram if available.
 
  #4  
Old 01-21-21, 11:27 AM
B
Member
Join Date: Jan 2021
Location: United States
Posts: 35
Received 2 Votes on 2 Posts
Regarding age, our furnace is 40 YO.
This could mean that it will fail any day now or it will last another 40 years.

Buy some CO and smoke detectors, they are like an insurance policy and you dont even sign a contract for them.
 
  #5  
Old 01-21-21, 07:38 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 61,889
Received 1,480 Votes on 1,368 Posts
175-200101-11 CJ and 025-15756C are both fan center part numbers.
The E33034 is the UL listing of the part.
That is an Essex RBM relay fan center


Fan centers are pretty much universal. 120v in - 24v 40va out - SPDT switch.
The one in the link is a good replacement part.
Honeywell fan center
 
  #6  
Old 01-26-21, 11:06 AM
G
Member
Thread Starter
Join Date: Jan 2021
Posts: 4
Received 0 Votes on 0 Posts
I cant get the my pic to upload at all??? Anyway That is what I have Plmax.
 
  #7  
Old 01-26-21, 11:10 AM
G
Member
Thread Starter
Join Date: Jan 2021
Posts: 4
Received 0 Votes on 0 Posts
Good morning,

I couldn't get the pics to convert over but below Pjmax was able and that is what I have. Like I said I just have to make it until summer time. and since I live in the "People peaceful loving republic of kommiefornia" I have CO2 and smoke detectors everywhere. Ha
 
  #8  
Old 01-26-21, 01:04 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 61,889
Received 1,480 Votes on 1,368 Posts
You can do a search for "fan centers" as there are several different manufacturers. They pretty much all do the same thing and the wiring..... although it may not look identical.... is easy to install.

How-to-insert-pictures.
 
  #9  
Old 03-02-21, 09:29 AM
G
Member
Thread Starter
Join Date: Jan 2021
Posts: 4
Received 0 Votes on 0 Posts
Thank you. Yes in looking at all the things and reading what yall have written it does sound like the relay. I need to do more research before I get into this thing anymore but I wanted to say thank you to you guys for your help. It is appreciated immensely.
Yes I will be back for more questions if you guys don't mind.
 
  #10  
Old 03-02-21, 03:31 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 61,889
Received 1,480 Votes on 1,368 Posts
Absolutely not..... please feel free to stop back and ask more questions.
 
  #11  
Old 03-03-21, 09:44 AM
user 10's Avatar
Member
Join Date: Mar 2004
Location: NA
Posts: 2,107
Received 45 Votes on 39 Posts
It could be the fan/limit switch and you really shouldn't order parts without actually determining what's wrong.

That old furnace could very well be unsafe.
 
 

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