Goodman GMP100-3 Gas Furnace Won't Stay Lit - HVAC - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC


Thread Tools Display Modes
Old 11-23-2012, 05:45 PM   #1
Join Date: Nov 2012
Posts: 1
Rewards Points: 10

Goodman GMP100-3 Gas Furnace won't stay lit

Exhaust blower fan comes on. HSI glows. Gas burners light, but then go out after about 10 seconds.

Have checked 'pressure sensor' by disconnecting connections from sensor & connecting them directly to each other. Same issues as above.

Have cleaned the 'flame sensor' rod & adjacent burner housing.
Also cleaned connections at sensor & circuit board, as well as checking connectors 'clamping'/friction.

With voltmeter set to ACVolts 200, the reading between main 'Neutral' connection on circuit board & 'Ground' (screw on furnace housing) is 1.2.
Reading between 'flame sensor' & 'ground' is 0.2.

I appreciate any assistance.


ldggray is offline   Reply With Quote
Old 11-23-2012, 06:15 PM   #2
An old Tradesmen
Join Date: Oct 2008
Location: Somewhere
Posts: 34,384
Rewards Points: 7,760

GMPs are known for either cracking the heat exchanger, or popping their crimp rings. Check yours,may be time for a new furnace.


beenthere is online now   Reply With Quote

Thread Tools
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
Quote for new furnace. Reasonable? dengle HVAC 16 03-04-2012 07:01 AM
Goodman furnace wont light and it is getting cold Rio_Grande HVAC 8 02-13-2012 07:01 AM
Goodman furnace blowing lukewarm air mangust13 HVAC 12 02-19-2009 07:38 PM
Problems with new furnace..Overheating, having to reset. Furnace too big? Tommy2 HVAC 41 12-01-2008 01:55 PM
New Cased Coil - Install to Furnace - PICTURES!! hartkem HVAC 39 11-18-2008 01:45 AM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1