Furnace won't light - Fiberglass RV


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-05-2016, 12:28 PM   #1
Junior Member
 
Name: Dennis
Trailer: Scamp
Oregon
Posts: 20
Furnace won't light

I have a Suburban Mod NT-16SEQ Furnace in my Scamp that will not ignite. When the thermostat is turned up, the fan comes on and then eventually goes off without the burner igniting. I suspect it is the electrode. It looks pretty simple to replace (two screws and one contact). I have not worked on furnaces before, and the closest RV service is 100 miles away. Any thoughts or suggestions would be appreciated.
__________________

Slim is offline   Reply With Quote
Old 11-05-2016, 12:39 PM   #2
Senior Member
 
Name: Darwin
Trailer: 2002 19 ft Scamp 19 ft 5th Wheel
Posts: 3,085
Send a message via Yahoo to Darwin Maring
See if there is an access plate that will allow you to look inside the burner compartment and see if is full of water. Mine was and I got the water out and it worked OK.
__________________

Darwin Maring is offline   Reply With Quote
Old 11-06-2016, 04:58 AM   #3
Senior Member
 
Name: Gerry
Trailer: 1979 Boler 1300 / 1991 Casita Freedom Deluxe
Maine
Posts: 1,595
Is this problem when your hooked up to shore power or just with Battery?
If the battery is low it will not have enough power to open the gas valve.
Can you hear the igniter clicking or see the spark when it is trying to lite?
If the answer is yes and your sure you have a good power (mine needs 12.4 volts min. in the battery to turn on gas valve.) could be sever other things.
1. Igniter is not close enough to where gas comes into burner chamber. This can be dangerous because gas can be building up in the chamber then Boom....
Can you smell gas???? If so and it is sparking just bend the igniter so it in the path of the gas tube.
2. the Fan is not turning fast enough to make the safty switch in the back of the furnace connect with will not allow the gas valve to turn on.
Try to locate wire and only if sure you've found the right ones you can jump them.
3. The gas valve is junk.

I've had all these problems over the years and all but #3 is a cheap fix.
Gerry is offline   Reply With Quote
Old 11-06-2016, 11:22 AM   #4
Junior Member
 
Name: Dennis
Trailer: Scamp
Oregon
Posts: 20
Furnace won't light

Problem exists even when hooked up to generator (which is putting out sufficient voltage). Turn thermostat up, fan comes on, no click is heard, and cannot see spark. When it first happened, I tapped on ceramic of electrode, and it came on. Then when I tried again, it would not come on. Then I tapped on shield where wire from electrode passes through it, and it came on. Then tried again and does not ignite at all. So I do not think it is gas problem (never did smell gas), but rather electrical. Fan runs at normal speed. In the past it has worked fine with the position that the electrodes are in.
Slim is offline   Reply With Quote
Old 11-06-2016, 01:00 PM   #5
Senior Member
 
Name: Darwin
Trailer: 2002 19 ft Scamp 19 ft 5th Wheel
Posts: 3,085
Send a message via Yahoo to Darwin Maring
Did you check for water in the combustion chamber??
Darwin Maring is offline   Reply With Quote
Old 11-06-2016, 06:15 PM   #6
Junior Member
 
Name: Dennis
Trailer: Scamp
Oregon
Posts: 20
Furnace won't light

I did check, and it is dry.
Slim is offline   Reply With Quote
Old 11-06-2016, 06:54 PM   #7
Senior Member
 
Name: Darwin
Trailer: 2002 19 ft Scamp 19 ft 5th Wheel
Posts: 3,085
Send a message via Yahoo to Darwin Maring
Could the spark gap be to wide?
Darwin Maring is offline   Reply With Quote
Old 11-06-2016, 07:14 PM   #8
Senior Member
 
Name: Gerry
Trailer: 1979 Boler 1300 / 1991 Casita Freedom Deluxe
Maine
Posts: 1,595
I would say from what you discribed that it is the electrode. Darwin may be right and you can gently bend the electrod so they are 3/16 of an inch apart and in line with each other. If the ceramic is cracked then it is junk and replacement is an easy and inexpensive fix.
Gerry is offline   Reply With Quote
Old 11-06-2016, 07:31 PM   #9
Commercial Member
 
tractors1's Avatar
 
Name: Charlie Y
Trailer: Escape 21 - Felicity
Oregon
Posts: 1,343
Quote:
Originally Posted by Gerry View Post
I would say from what you discribed that it is the electrode. Darwin may be right and you can gently bend the electrod so they are 3/16 of an inch apart and in line with each other. If the ceramic is cracked then it is junk and replacement is an easy and inexpensive fix.
I vote the same.
__________________
Charlie Y

Don't drill holes, try custom storage you design: http://RVWidgetWorks.com
tractors1 is offline   Reply With Quote
Old 11-07-2016, 10:33 AM   #10
Junior Member
 
Name: Dennis
Trailer: Scamp
Oregon
Posts: 20
Furnace Won't Light

Thank you all for the good information. Will check all of that out. Found this service manual online...
http://www.bdub.net/manuals/Suburban_Service_Manual.pdf
__________________

Slim is offline   Reply With Quote
Reply

Tags
furnace, light


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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
Boler Furnace won't light khoa l Problem Solving | Owners Helping Owners 32 09-30-2019 07:16 AM
My team won! My team won! Gina D. General Chat 7 02-02-2009 07:41 AM
help! furnace won't ignite w/ battery=3 a.m. blues johnsoba Problem Solving | Owners Helping Owners 13 10-18-2006 05:26 AM
WE WON!!! WE WON!!! Summer&Brad B. General Chat 19 12-12-2005 08:35 AM
Pilot light won't light (Casita) SW6P Legacy Posts Problem Solving | Owners Helping Owners 5 08-06-2003 09:12 PM

» Upcoming Events
No events scheduled in
the next 465 days.
» Featured Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:55 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
×