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 10-31-2010, 02:21 PM   #1
Newbie
 
Join Date: Oct 2010
Posts: 8
Share |
Default

Carrier Furnace Possible Inducer Motor Problems?


A year ago I noticed that my furnace had stopped working. The inducer motor was running but the unit was not igniting. After a little peeking and prodding I noticed that there was a little red button (actually there are several of them in the unit) that had popped up. I pushed the button in and the unit started working, That was it. It worked through the entire winter season.

This year when I started up the unit it would not start. Same problem. So I pushed the red button and teh unit ran. But for 3 days. Now each time I push the button the unit runs for about 10 minutes before the button pops.

I called the HVAC repair guys and they replaced the sensor/button thinking it was old and perhaps required replacement. They checked the exhaust, vent etc and everything seems fine. The new button/switch/sensor did not help.

They (the HVAC repair guys) told me to get a chimney guy to up on the house and make sure the exhaust vent is clear and not blocked. I did so and everything is clear.

One thing that I noticed. When I push the button and start the system, I notice that there is a little smoke that manages to escape from the joints on the metal pipe/duct that leads the exhaust out of the house. Is that normal?

Also, what could the problem be? Is the inducer motor running too week? The HVAC guy said he doesnt think so.

Any ideas? Thanks.

Mogambo is offline   Reply With Quote
Old 10-31-2010, 02:25 PM   #2
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,381
Default

Carrier Furnace Possible Inducer Motor Problems?


Cracked heat exchanger.

beenthere is online now   Reply With Quote
Old 10-31-2010, 02:28 PM   #3
Newbie
 
Join Date: Oct 2010
Posts: 8
Default

Carrier Furnace Possible Inducer Motor Problems?


Quote:
Originally Posted by beenthere View Post
Cracked heat exchanger.
This unit is 21 years old. Is a cracked heat exchanger the end of this unit?
Mogambo is offline   Reply With Quote
Old 10-31-2010, 02:31 PM   #4
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,381
Default

Carrier Furnace Possible Inducer Motor Problems?


Not worth it to replace the heat exchanger.

Check in to getting a 95% efficient one.
beenthere is online now   Reply With Quote
Old 10-31-2010, 08:26 PM   #5
Newbie
 
Join Date: Oct 2010
Posts: 8
Default

Carrier Furnace Possible Inducer Motor Problems?


Quote:
Originally Posted by beenthere View Post
Not worth it to replace the heat exchanger.

Check in to getting a 95% efficient one.
When I change the furnace, should I also change the associated Air Conditioner? Does it make ssense to change both? Is it cheaper, long and short term to simply change one and not the other?
Mogambo is offline   Reply With Quote
Old 11-01-2010, 03:39 AM   #6
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,381
Default

Carrier Furnace Possible Inducer Motor Problems?


Depends how old the A/C is.

If its some what new. Then no reason to change out th A/C also. If its as old as the furnace. Then its a good idea to change it out also.
beenthere is online now   Reply With Quote
Old 11-01-2010, 07:38 AM   #7
Newbie
 
Join Date: Oct 2010
Posts: 8
Default

Carrier Furnace Possible Inducer Motor Problems?


Quote:
Originally Posted by beenthere View Post
Depends how old the A/C is.

If its some what new. Then no reason to change out th A/C also. If its as old as the furnace. Then its a good idea to change it out also.

Thanks. The A/C is as old as the furnace.

By the way I am curious, what made you think its the heat exchanger? So I understand whats going on.
Mogambo is offline   Reply With Quote
Old 11-01-2010, 03:44 PM   #8
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,381
Default

Carrier Furnace Possible Inducer Motor Problems?


The little red button. Is the reset for the roll out switch.

Next time you gonna be down in the basement with the furnace. Turn up thermostat and watch the burners. Watch the flame when the fan comes on. If the flames start dancing or coming back toward the gas valve. thats a real good indication of a cracked heat exchanger.
beenthere is online now   Reply With Quote
Old 11-07-2010, 07:41 PM   #9
Newbie
 
Join Date: Oct 2010
Posts: 8
Default

Carrier Furnace Possible Inducer Motor Problems?


So here is the latest. BTW the circuit board gives an error code of 31. The Carrier Unit is Model# 58DHC095-JC, Circuit Board HH84AA016

I had a repair (in fact two of them) guy come in. Both say the heat exchanger is fine.

The first guy went and changed the high limit auto reset temperature cutoff sensor and the high limit manual reset safety cutoff. That did not solve the problem.

When the second repair guy came we noticed that the first had put a 200F high limit auto reset temperature cutoff and a 175F manual reset safety cutoff. Well duh! so the manual reset safety cutoff would keep kicking in. So now I have a 215F safety cutoff (manual reset) and a 180F auto reset high limit switch.

The 215F safety cutoff manual reset switch is the old one that I saved.

The unit is performing better, as in it works as long as it does not have to run for a long time. For example if I tell it to maintain 80F in the house, it will have to run for hours. And somewhere after a few hours of running the manual reset High limit safety switch will pop.

I had the entire flue inspected and all is fine there.

So for some reason the unit still thinks its overheating. Any ideas? The HVAC repair guys say that everything seems to be in working order, and yet, it cuts off.
Mogambo is offline   Reply With Quote
Old 11-08-2010, 02:45 AM   #10
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,381
Default

Carrier Furnace Possible Inducer Motor Problems?


Post pics of where the manual reset limit is.
beenthere is online now   Reply With Quote
Old 11-08-2010, 02:33 PM   #11
Newbie
 
Join Date: Oct 2010
Posts: 8
Default

Carrier Furnace Possible Inducer Motor Problems?





Its the switch to the right and lower of the inducer, I tried to circle it in red. To the left of the inducer motor the red rectangle is where the auto reset high limit sensor is.

Last edited by Mogambo; 11-08-2010 at 02:40 PM. Reason: Ading more information
Mogambo is offline   Reply With Quote
Old 11-09-2010, 04:42 AM   #12
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,381
Default

Carrier Furnace Possible Inducer Motor Problems?


You have vent problems. Check your chimney/flue for restrictions.
beenthere is online now   Reply With Quote
Old 11-09-2010, 09:20 AM   #13
Newbie
 
Join Date: Oct 2010
Posts: 8
Default

Carrier Furnace Possible Inducer Motor Problems?


I had the chimney/flue inspected. Everything is fine. In fact even tested the unit with the flue disconnected and it cuts off. The only part we could not look into was the final 12 maybe 18 inches from the inducer motor to the unit's vent where the flue is attached. That path curves and I cant look in.

The unit is also moody. One day it will work andother day it will cutoff after 15 minutes. So testing can be a real pain.

Thanks.
Mogambo is offline   Reply With Quote
Old 11-09-2010, 05:33 PM   #14
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,381
Default

Carrier Furnace Possible Inducer Motor Problems?


Its always easier to test. When it quits working while your there.
beenthere is online now   Reply With Quote
Old 11-09-2010, 08:15 PM   #15
Newbie
 
Join Date: Oct 2010
Posts: 8
Default

Carrier Furnace Possible Inducer Motor Problems?


I have sat there for an hour and it doesnt cut off. Then the moment I climb down from the attic it cuts off. I am not kidding. It is possessed LOL

Mogambo 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
Water Inside/Around American Standard Furnace michrob HVAC 8 12-08-2011 03:51 PM
Carrier Model 58MVP inducer motor deanray HVAC 11 11-19-2010 04:33 PM
Carrier Furnace help code 31 fauxjaux HVAC 6 04-22-2010 10:36 PM
Heil furnace inducer vibrating, capcitor handling question diggerdave HVAC 45 03-01-2009 04:56 PM
Help Troubleshooting Carrier Furnace SteveSmith98 HVAC 2 01-01-2009 09:34 PM




Top of Page | View New Posts

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