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 10-31-2008, 10:44 PM   #1
Newbie
 
Join Date: Oct 2008
Posts: 8
Share |
Default

Goodman 80%, igniter glows no flame


Hello, Please help... I have reviewed a lot of the posts looking for this same problem but none seem to be exactly the problem I am having... I have a Goodman 80%, 10-15 yrs old... The vent blower runs for about 15 seconds and then I hear a clicking sound and eventually notice the igniter starting to glow and then all shuts down... The combined time from the clicking sound to shutdown is about 7-10 secs... I never hear any sound from the gas valve (solenoid clicking) indicating it is being activated... Is the igniter supposed to be ON for a set amount of time before shutting down??? It doesn't seem to be ON long enough to ignite the burner but then again as I mentioned I don't think the gas valve is opening...

I have removed the flue pipe to eliminate the question of blockage and I have checked the flow switch which I think if it wasn't working the igniter wouldn't glow at all... I took the hose off the vent blower and sucked on the end and get the same operation... Thank you for any input you can give... John

diyjohn is offline   Reply With Quote
Old 11-01-2008, 02:20 AM   #2
Member
 
HvacWiz's Avatar
 
Join Date: Nov 2006
Location: Northwest Ohio
Posts: 286
Default

Goodman 80%, igniter glows no flame


You will need a meter to check if you are getting 24v at the gas valve.

HvacWiz is offline   Reply With Quote
Old 11-01-2008, 11:51 AM   #3
Newbie
 
Join Date: Oct 2008
Posts: 8
Default

Goodman 80%, igniter glows no flame


Thank you HvacWiz... I am picking up a volt meter today from my son... mine has a blown fuse... if it is determined to have current at the valve then I would assume the solenoid is faulty and should be replaced... are they replaceable??? However if no current at the valve what would be the next item to check??? Enjoy the Day, John
diyjohn is offline   Reply With Quote
Old 11-01-2008, 12:24 PM   #4
Member
 
hvaclover's Avatar
 
Join Date: Oct 2008
Location: Suburbs of Detroit Mi
Posts: 3,704
Default

Goodman 80%, igniter glows no flame


Hey Diyjohn!

When it comes time to give the the meter back, do like our kids do when we loan them a tool: "I don't remember no meter".

I'm still trying to get my American made Dewalt circular saw back from my Pecker Head son.

Damn kids
__________________
Just slow, not stupid.
hvaclover is offline   Reply With Quote
Old 11-03-2008, 02:57 AM   #5
Newbie
 
Join Date: Oct 2008
Posts: 8
Default

Goodman 80%, igniter glows no flame


Hello HvacWiz, i did test for voltage at the gas valve.... Nothing there so i proceeded to the transformer and had 115v on one side and nothing on the other... I assume this means the transformer is defective??? You know i did have th furnace running a cpl weeks ago with no problem... I guess a transformer can just quit working all together... Thank you, John
diyjohn is offline   Reply With Quote
Old 11-03-2008, 06:36 AM   #6
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,862
Default

Goodman 80%, igniter glows no flame


If the transformer was bad.
The board wouldn't be able to run the inducer or ignitor when the stat calls.

The board needs 24 volts to do anything.
beenthere is offline   Reply With Quote
Old 11-03-2008, 01:35 PM   #7
Newbie
 
Join Date: Oct 2008
Posts: 8
Default

Goodman 80%, igniter glows no flame


Thank you... the transformer has 2 connectors on the bottom side and i had a reading of 115v and there were 2 connectors at the top which i had no reading at all... One of the two top connectors has a double connector (piggyback) of which one wire runs to the metal housing as a ground and the other to the circuit board... Am i checking this properly??? Yes the igniter glows and the vent blower is operating...
diyjohn is offline   Reply With Quote
Old 11-03-2008, 03:37 PM   #8
Newbie
 
Join Date: Nov 2008
Posts: 2
Default

Goodman 80%, igniter glows no flame


Your transformer is fine...the problem is either a bad gas valve or a bad board. What is the model # of your furnace?
AccuAir is offline   Reply With Quote
Old 11-03-2008, 04:33 PM   #9
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,862
Default

Goodman 80%, igniter glows no flame


You must be.
If it was bad, the board wouldn't be able to run the inducer or ignitor.
beenthere is offline   Reply With Quote
Old 11-03-2008, 05:04 PM   #10
Member
 
hvaclover's Avatar
 
Join Date: Oct 2008
Location: Suburbs of Detroit Mi
Posts: 3,704
Default

Goodman 80%, igniter glows no flame


Been is right if you are giving an accurate estimate of the furnace age.



Some how you are missing the 24 v supply.
__________________
Just slow, not stupid.

Last edited by hvaclover; 11-03-2008 at 05:59 PM.
hvaclover is offline   Reply With Quote
Old 11-03-2008, 09:00 PM   #11
Newbie
 
Join Date: Oct 2008
Posts: 17
Default

Goodman 80%, igniter glows no flame


The problem is that the ignitor is not pulling enough amps to open valve to allow gas to flow. Replace glowbar and it will work, if it don't pull the required amps that is around 3.2 amp draw to open valve, check it with clamp on meter. They will glow all day long without lighting. I was a service technician for Amerigas for quite a while.
simpleman1962 is offline   Reply With Quote
Old 11-03-2008, 09:20 PM   #12
Member
 
Join Date: Jul 2008
Location: Canada (s/w ON.)
Posts: 2,294
Default

Goodman 80%, igniter glows no flame


Quote:
Originally Posted by diyjohn View Post
Hello HvacWiz, i did test for voltage at the gas valve.... Nothing there so i proceeded to the transformer and had 115v on one side and nothing on the other... I assume this means the transformer is defective??? You know i did have th furnace running a cpl weeks ago with no problem... I guess a transformer can just quit working all together... Thank you, John
You should remove one the secondary wire connections and check for the 24 volts.
You should read the 24 volts. If not the transformer is bad.
If you have 24 volts and it goes to nothing with the wires connected, it means that there is a short circuited load!
Wildie is offline   Reply With Quote
Old 11-03-2008, 09:23 PM   #13
Newbie
 
Join Date: Oct 2008
Posts: 17
Default

Goodman 80%, igniter glows no flame


I am willing to bet that the ignitor is bad believe what you want.
simpleman1962 is offline   Reply With Quote
Old 11-03-2008, 09:53 PM   #14
Member
 
Join Date: Jul 2008
Location: Canada (s/w ON.)
Posts: 2,294
Default

Goodman 80%, igniter glows no flame


Quote:
Originally Posted by simpleman1962 View Post
I am willing to bet that the ignitor is bad believe what you want.
In the original post he said that the igniter was glowing!
This tells me that something else is happening! You could very well be right, as you obviously have had experience with these!
Wildie is offline   Reply With Quote
Old 11-03-2008, 10:59 PM   #15
Member
 
hvaclover's Avatar
 
Join Date: Oct 2008
Location: Suburbs of Detroit Mi
Posts: 3,704
Default

Goodman 80%, igniter glows no flame


Quote:
Originally Posted by simpleman1962 View Post
The problem is that the ignitor is not pulling enough amps to open valve to allow gas to flow. Replace glowbar and it will work, if it don't pull the required amps that is around 3.2 amp draw to open valve, check it with clamp on meter. They will glow all day long without lighting. I was a service technician for Amerigas for quite a while.

Amperage on the HSI does not open the valve. If the HSI is weak then the warm up won't be hot enough. The gas valve will still open but if no flame is sensed in .08 seconds it will retry until lock out. The inducer motor would purge what little gas there was released.

You got a meter, so wait for the igniter to cool to room temp and ohm it out.

__________________
Just slow, not stupid.
hvaclover 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
Goodman Furnace GMNT100-4b Won't stay on freeslporer HVAC 3 10-30-2008 06:42 PM
Flame blowin' in the wind... testeng HVAC 4 10-28-2007 03:11 PM
Sub is swapping Amana for Goodman Dragon HVAC 22 02-04-2007 07:54 AM
Trouble - Goodman GMP100-3 Rev B cstelter HVAC 1 10-24-2006 12:27 PM




Top of Page | View New Posts

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