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 01-23-2012, 11:40 PM   #1
Newbie
 
Join Date: Jan 2012
Posts: 7
Share |
Default

Carrier 58MVP -blower continues to run


I have a 2002 Carrier Infinity 58MVP. The furnace works fine, but the blower does not shut off. The furnace cycles fine with the call for heat; however, at the end of the cycle, instead of shutting the blower down after 90 seconds, the blow goes from low speed to high speed and stays at this speed until the next cycle for heat.

I replaced the curcuit board (HK42FZQ12). I am not getting any error codes. I also jump/bypassed the three limit (safety switches). I can turn off the system (using the thermstat), but it the fan contines to run. The only way it shuts off, is "Kill the Power"

Any sugguestions.

realprop is offline   Reply With Quote
Old 01-23-2012, 11:54 PM   #2
I'm Your Huckleberry
 
Join Date: Mar 2011
Posts: 5,556
Default

Carrier 58MVP -blower continues to run


It could be that a high temperature limit switch is tripping near the end of a cycle or during which brings on the blower at full speed and cuts the gas/flames off. Once the fan cools off the furnace when it's on by itself the temperaure limit switch resets itself as it cools down and the call for heat comes back on.

Could be.

If so it's an air flow issue such as a dirty evaporator coil and/or restricted return air.

__________________
Thanks.
Doc Holliday is offline   Reply With Quote
Old 01-23-2012, 11:56 PM   #3
Member
 
Houston204's Avatar
 
Join Date: Oct 2009
Location: Texas
Posts: 586
Default

Carrier 58MVP -blower continues to run


Sounds like a stat problem or a shorted stat wire.

Disconnect the R wire from the control board. If this turns off the fan, reconnect the R wire to the furnace control board and remove the stat R wire.
Houston204 is offline   Reply With Quote
Old 01-24-2012, 01:11 AM   #4
Member
 
Join Date: Feb 2007
Location: NW Ohio
Posts: 804
Default

Carrier 58MVP -blower continues to run


Quote:
Originally Posted by Houston204 View Post
Sounds like a stat problem or a shorted stat wire.

Disconnect the R wire from the control board. If this turns off the fan, reconnect the R wire to the furnace control board and remove the stat R wire.
or the stat is set to "fan on" should be set to auto.........gotta look at the easy stuff first
harleyrider is offline   Reply With Quote
Old 01-24-2012, 01:44 AM   #5
Newbie
 
Join Date: Jan 2012
Posts: 7
Default

Carrier 58MVP -blower continues to run


The fan shuts off if the red wire is disconnect - bboth the furnace side and and the stat side.
realprop is offline   Reply With Quote
Old 01-24-2012, 01:48 AM   #6
Newbie
 
Join Date: Jan 2012
Posts: 7
Default

Carrier 58MVP -blower continues to run


It does not seem to be the limit switch for two reasons:

1. The furnace seems to complete a full cycle. The heat stays on (regardless of increase in temp) until it reachs set temp, then it shuts down, the EOM stays on for a while and the blower lowers it speeds, but stays on for about 90 secs. Just as it seems to shut down, then it ramps up to full speed
2. We jumped all three limits, and the fan continues to run at full speed.

Does this rule out the limit switches?
realprop is offline   Reply With Quote
Old 01-24-2012, 01:57 AM   #7
Newbie
 
Join Date: Jan 2012
Posts: 7
Default

Carrier 58MVP -blower continues to run


CODE Update. I am getting a code 22
realprop is offline   Reply With Quote
Old 01-24-2012, 04:45 AM   #8
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,527
Default

Carrier 58MVP -blower continues to run


Abnormal flame signal. It thinks there is a flame while it is not calling for heat. You may have disturbed the wrong wire.

For the fan always running problem. As Harley said, start with the easy stuff. Make sure stat fan setting is set to auto, next make sue that no programs are set to fan on, if you have a programmable thermostat.

If all that checkes out. Remove the wire fro the G terminal at the furnace, and see if it stops running the blower. if so, you have a short in a wire, or a bad thermostat. Put wire back on G terminal in furnace, an remove it from the thermostat, if fan continues to run, you got a short in a wire.
beenthere is online now   Reply With Quote
Old 01-24-2012, 06:37 AM   #9
Newbie
 
Join Date: Jan 2012
Posts: 7
Default

Carrier 58MVP -blower continues to run


I did confirm that the blower is set to Auto and that the Carrier thermostat is not programmed to be on. The blower continues to run with the G disconnected.

I starting to think that the furnace is possessed.

Any more thoughts
realprop is offline   Reply With Quote
Old 01-24-2012, 01:52 PM   #10
Part of the Clover Leaf
 
Join Date: May 2011
Location: NW Burbs of Detroit Mi.
Posts: 1,107
Default

Carrier 58MVP -blower continues to run


naw..just a typical Carrier break down.
hvac5646 is offline   Reply With Quote
Old 01-24-2012, 05:30 PM   #11
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,527
Default

Carrier 58MVP -blower continues to run


Quote:
Originally Posted by realprop View Post
I did confirm that the blower is set to Auto and that the Carrier thermostat is not programmed to be on. The blower continues to run with the G disconnected.

I starting to think that the furnace is possessed.

Any more thoughts
Ok, now remove the wire from the Y terminal of the furnace also.
beenthere is online now   Reply With Quote
Old 01-24-2012, 10:41 PM   #12
Newbie
 
Join Date: Jan 2012
Posts: 7
Default

Carrier 58MVP -blower continues to run


Not sure if I was to leave the green off and disconnect the yellow, so I reconnected the green and removed the yellow. The fan continued. Was this correct or should both mbe removed.

According to my mannual (and the back of the panel), Code 22 refers to a "Set Up Error" not an abnormal flame error. With that said, I did see this error code in the 58MVB model - which I beleve is the newer model. So what does code 22 really mean?

A couple of addtional updates...
Using an OHM tester, I verified that all three limit switches are open
I also realized that I left the DEF jumper on. This has since been removed, but it does not change the code

What is left to check?
realprop is offline   Reply With Quote
Old 01-24-2012, 11:18 PM   #13
Newbie
 
Join Date: Jan 2012
Posts: 7
Default

Carrier 58MVP -blower continues to run


OK, after removing the DEF jmumper, I disconected the green from the control panel and the fan stop. I connected it back and it worked. I disconnected it fromstat and it did not turn on.

Does this mean that my stat is shot?
realprop is offline   Reply With Quote
Old 01-24-2012, 11:18 PM   #14
Member
 
Houston204's Avatar
 
Join Date: Oct 2009
Location: Texas
Posts: 586
Default

Carrier 58MVP -blower continues to run


Houston204 is offline   Reply With Quote
Old 01-24-2012, 11:27 PM   #15
Member
 
Houston204's Avatar
 
Join Date: Oct 2009
Location: Texas
Posts: 586
Default

Carrier 58MVP -blower continues to run



Houston204 is offline   Reply With Quote
Reply

Tags
carrier blower problems


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
Carrier 58MVP Blower Problem mickd HVAC 42 06-24-2014 04:38 AM
Bryant Plus 90 - No Blower Ducaticorse HVAC 11 10-16-2012 08:39 PM
Carrier 58MVP Series 140--Blower Specs--Custom Config. mogmen HVAC 12 11-01-2009 08:29 AM
Carrier 58MXA Wiring Blower Switch 63012753 HVAC 0 10-06-2009 09:09 PM
Carrier 58SX Main Blower Turns On Without Command otismyman HVAC 19 09-25-2009 07:06 PM




Top of Page | View New Posts

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