Forums | Home Repair | Home Improvement | Painting | Interior Decorating | Remodeling | Landscaping


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 05-29-2010, 10:51 AM   #1
Newbie
 
Join Date: May 2010
Posts: 2
Share |
Wink

Troubleshooting a Goodman Integrated Control Mod


The fuse on integrated control module in a goodman model GMT blows almost immediately when replaced in the AC mode. I have check the 120/24 transformer with an ohm meter and it reads no short to ground on either side and the opposite poles are isolated. The board shows no "burned" components or spots from the front. Are there another tests that I might do before replacing this module?
sportster is offline   Reply With Quote
Old 05-29-2010, 11:00 AM   #2
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 8,330
Default

Troubleshooting a Goodman Integrated Control Mod


The thermostat wiring to the outside unit may be damaged by weed whacker/dog/rodents. Check it first. Then remove it at the unit outside and try turn unit on. If it still shorts then the short is in the wiring to the house or the furnace and not the outdoor unit. Look for dead mice, bad contactor in outdoor unit.
__________________
"Cut it twice and it is still too short".
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
yuri is offline   Reply With Quote
Old 05-29-2010, 11:04 AM   #3
Member
 
Houston204's Avatar
 
Join Date: Oct 2009
Location: Texas
Posts: 585
Default

Troubleshooting a Goodman Integrated Control Mod


Check the control wire to your outdoor unit. Animals and weed eaters commonly damage it.



The control wire can also rub against copper pipes in the outdoor unit and cause this problem.
Houston204 is offline   Reply With Quote
Old 05-29-2010, 12:49 PM   #4
Newbie
 
Join Date: May 2010
Posts: 2
Default

Troubleshooting a Goodman Integrated Control Mod


Thank you for your quick feedback. I did what you suggested and I also disconnected the ac unit contact solenoid from the control mod and tested to see if the fan would come on and it did. Then reconnected the outside solenoid and it blew the fuse again. The contact solenoid does show discoloration by not that bad and it read out ok, but I do not have a megger.
sportster is offline   Reply With Quote
Old 05-29-2010, 01:04 PM   #5
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 8,330
Default

Troubleshooting a Goodman Integrated Control Mod


You don't need a megger just a new contactor from Graingers (under $50). They are rated in amperage draw for the contacts but I would get a 30 amp one as it is the largest and has better contacts. It is probably mechanically seizing and drawing too many amps not necessarily shorting.
__________________
"Cut it twice and it is still too short".
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
yuri is offline   Reply With Quote
The Following User Says Thank You to yuri For This Useful Post:
sportster (05-29-2010)
Reply

Tags
control, gmt, goodman, model, module


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
Goodman furnace control board patz83 HVAC 7 03-14-2010 02:07 PM
Goodman 4 flashes on control board bigmac71201 HVAC 6 09-28-2009 02:53 PM
DIY recommendation for Goodman Control Module (Circuit Board) njwaves HVAC 3 09-26-2009 07:29 AM
S9301A1001 Integrated Boiler Control Invisible-Man HVAC 3 03-31-2009 09:49 PM
Sub is swapping Amana for Goodman Dragon HVAC 22 02-04-2007 07:54 AM




Top of Page | View New Posts

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