Carrier Gas Pack Heater Inducer fan runs after heater shuts off

Reply

  #1  
Old 02-19-05, 10:01 AM
W
Member
Thread Starter
Join Date: Feb 2005
Location: Aiken, SC
Posts: 19
Received 0 Votes on 0 Posts
Carrier Gas Pack Heater Inducer fan runs after heater shuts off

Afternoon,

I have a Carrier Gas heat and A/C unit combination unit. Model No. 48NMT036300. The unit works great the only problem is that the inducer motor does not always shut off when the heater stops. Sometimes this Unducer Motor will run continuously until the next heat cycle and then it may or may not shut off at the end of that heat cycle. I can turn the unit OFF at the thermostat and it will stop and sometimes remain off until the next heating cycle.

Can anyone provide me any ideas on how to repair this problem?

Thank YOU
Grover
 
Sponsored Links
  #2  
Old 02-19-05, 11:09 AM
A
Member
Join Date: Feb 2005
Location: Massachusetts
Posts: 123
Received 0 Votes on 0 Posts
Call someone that works on them. A gas furnace is not something to play with.
 
  #3  
Old 02-19-05, 12:50 PM
W
Member
Thread Starter
Join Date: Feb 2005
Location: Aiken, SC
Posts: 19
Received 0 Votes on 0 Posts
Thanks Al,

I understand your thoughts and appreciate your input. I believe this problem is electrical and not on the gas side.

Thanks for your input
Grover
 
  #4  
Old 02-19-05, 02:34 PM
mattison's Avatar
Member
Join Date: Mar 2003
Location: Cinti, OH
Posts: 5,549
Received 0 Votes on 0 Posts
It is more than likely a relay in the circuit board sticking and I doubt very much if it's repairable, usually you end up buying a new board.
 
  #5  
Old 02-19-05, 02:50 PM
W
Member
Thread Starter
Join Date: Feb 2005
Location: Aiken, SC
Posts: 19
Received 0 Votes on 0 Posts
Thanks Mattison,

Just what I did not want to hear. I hope someone has a cheaper fix.

Keep Smiling
Grover
 

Last edited by woodgc; 02-19-05 at 02:51 PM. Reason: spelling
  #6  
Old 02-20-05, 12:20 AM
scottg's Avatar
Member
Join Date: Dec 2004
Location: Wilmington, NC hurricane magnet of the U.S.A.
Posts: 259
Received 0 Votes on 0 Posts
Some Carriers are sensitive to voltages and if a digital thermostat is sending some form of voltage to the mother control board I have had them do crazy stuff.
If this is the case then you can put a 90-293Q relay in the heat circuit to energize heat that will totally cancel out when no call is present.

Terminal position

Common = 1
W/heat from t'stat = 3
R/power = 5
W/heat from unit = 4

This should fully cancel out the signl from the t'stat
 
  #7  
Old 02-20-05, 05:04 AM
W
Member
Thread Starter
Join Date: Feb 2005
Location: Aiken, SC
Posts: 19
Received 0 Votes on 0 Posts
Thank YOU Scott,

I'm not using a digital thermostat, but have been supecting that the thermostat not maybe sending a strong enough signal to the unit. The thermostat was installed with the unit in 1987. What do you think?

Have a Great day
Grover
 
  #8  
Old 02-20-05, 07:27 AM
scottg's Avatar
Member
Join Date: Dec 2004
Location: Wilmington, NC hurricane magnet of the U.S.A.
Posts: 259
Received 0 Votes on 0 Posts
You may have either a bad t'stat or a bad control board.
Remove the w and r wire from the t'stat.
Jumper between r and w.
then disconnect many times that way you can see if it is the t'stat or control. Or it is probably a good time to get a pro.
Or change out electrical parts with no warranty.
I say this because when you install a part you can't bring it back.
 
  #9  
Old 02-21-05, 05:12 AM
W
Member
Thread Starter
Join Date: Feb 2005
Location: Aiken, SC
Posts: 19
Received 0 Votes on 0 Posts
Thank again Scott,

I'll follow your advice.

Keep Smiling
Grover
 
  #10  
Old 02-21-05, 08:39 PM
slowpoke7759
Visiting Guest
Posts: n/a
undefinedundefined
 
Reply
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


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