Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-05-2011, 12:52 PM   #1
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 5,648
Furnace won't lite

Well I finally got around to trying lighting the furnace and the blower runs but it won't light. It is a Suburban made in 81. The components look ok. I am not hearing a ticking noise of the igniter. Anyone have any ideas where to start? Also the little access plate with the igniter in it looks like the gasket is asbestos. Does anyone know when they stopped using asbestos on these things?

Perry
__________________

__________________
perryg114 is offline   Reply With Quote
Old 11-05-2011, 01:24 PM   #2
Rivet Master
 
Lumatic's Avatar

 
1971 25' Tradewind
1993 34' Excella
Currently Looking...
Estancia , New Mexico
Join Date: Feb 2005
Posts: 6,642
Images: 16
Blog Entries: 1
It could be any number of things. I would start with the thermocouple. Then check the sail switch and limit switch.
__________________

__________________
Sail on silver girl. Sail on by. Your time has come to shine.
Lumatic is offline   Reply With Quote
Old 11-05-2011, 03:08 PM   #3
Rivet Master
 
Join Date: Jan 2005
Posts: 811
Is the trailer new to you? Do you know the history of the furnace? If it has been in the trailer for 30 years I would get a new furnace as the plenum is likely burned out.
I am reasonably handy but a 30 year old furnace is one of the DIY things I wouldn't touch.
__________________
handn is offline   Reply With Quote
Old 11-05-2011, 04:31 PM   #4
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 5,648
If I can't get it to work I won't replace it right now. The plenum looks good but I plan on checking it for leaks once I get it running. It does not look like it has been used much based on the level of corrosion. I plan on using it to get a cold trailer warm then switch to an electric space heater or the heater coils in the AC unit.

Perry
__________________
perryg114 is offline   Reply With Quote
Old 11-05-2011, 05:42 PM   #5
Rivet Master
 
Lumatic's Avatar

 
1971 25' Tradewind
1993 34' Excella
Currently Looking...
Estancia , New Mexico
Join Date: Feb 2005
Posts: 6,642
Images: 16
Blog Entries: 1
Quote:
Originally Posted by handn View Post
I am reasonably handy but a 30 year old furnace is one of the DIY things I wouldn't touch.
I agree, you are probably better off just replacing the unit. If you don't know about furnaces you will spend hours figuring it out and may end up with a furnace that kind of works and is kind of safe.

How about having a RV tech take a look at it. But make sure he knows what he is talking about.
__________________
Sail on silver girl. Sail on by. Your time has come to shine.
Lumatic is offline   Reply With Quote
Old 11-05-2011, 06:00 PM   #6
Rivet Master
Commercial Member
 
lewster's Avatar
 
Vintage Kin Owner
Naples, FL , Hood River, OR
Join Date: Dec 2005
Posts: 7,281
Good luck finding an RV tech willing to take the responsibility for the continued safe operation of a 30+ year old furnace.......REGARDLESS OF IT'S APPARENT CONDITION! I wouldn't touch it!

For your own safety and piece of mind, I would not even consider trying to get it operational unless you want to remove it to the bench and use it as an educational experience.

You should replace it with a new, DSI (direct s[ark ignition) furnace that will give you years of safe, reliable service, not to mention that 'peace of mind' factor that you just can't put a value on.

It's your trailer and your life and you can certainly do as you please, but you did ask for opinions, and you now have my 'professional opinion'. Use it for what you will. YMMV!
__________________
Lew Farber...ABYC Certified Master Marine Electrician...RVIA Certified Master Tech ...AM Solar Authorized Installation Center...AIRSTREAM Solar & Electrical Specialist...Micro Air 'Easy Start' Sales and Installations
lewster is offline   Reply With Quote
Old 11-05-2011, 06:11 PM   #7
Rivet Master
 
Lumatic's Avatar

 
1971 25' Tradewind
1993 34' Excella
Currently Looking...
Estancia , New Mexico
Join Date: Feb 2005
Posts: 6,642
Images: 16
Blog Entries: 1
Quote:
Originally Posted by lewster View Post
Good luck finding an RV tech willing to take the responsibility for the continued safe operation of a 30+ year old furnace.......REGARDLESS OF IT'S APPARENT CONDITION!
Lewster is right. Qualified techs willing to put their name on an old furnace are few and far between. Unqualified techs? Now that's another story.

YMMV??
__________________
Sail on silver girl. Sail on by. Your time has come to shine.
Lumatic is offline   Reply With Quote
Old 11-05-2011, 06:24 PM   #8
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 5,648
You guys act like these things are rocket science. It is a simple machine. Just about anything can be fixed and some things are not worth the effort. If it is not worth fixing I will figure that out. I am not about to risk my life or my family with something that is unsafe. If nothing else I will learn how these things operate.

Perry
__________________
perryg114 is offline   Reply With Quote
Old 11-05-2011, 06:48 PM   #9
4 Rivet Member
 
Airline's Avatar
 
1972 29' Ambassador
grants pass , Oregon
Join Date: Jun 2011
Posts: 260
Images: 1
Blog Entries: 2
+

Its not rocket science until it Explodes......
__________________
1972 Ambassador Itn'l 29'.Custom Interior

1987 Avion 34X

1985 Avion 30R
Airline is offline   Reply With Quote
Old 11-05-2011, 07:48 PM   #10
Rivet Master
 
Lumatic's Avatar

 
1971 25' Tradewind
1993 34' Excella
Currently Looking...
Estancia , New Mexico
Join Date: Feb 2005
Posts: 6,642
Images: 16
Blog Entries: 1
Quote:
Originally Posted by perryg114 View Post
You guys act like these things are rocket science. It is a simple machine. Just about anything can be fixed and some things are not worth the effort. If it is not worth fixing I will figure that out. I am not about to risk my life or my family with something that is unsafe. If nothing else I will learn how these things operate.

Perry
Not as complicated for me as a computer (which for some are not) but more complicated than a toaster. 5 years ago you would have been reading my mind. Now I know enough about how the furnace works to be semi-dangerous and wish I just bit the bullet 5 years ago and got the new furnace (which I had to do anyway). Using 20/20 hindsight I would have been better off if I took that all time and learned to play the accordian.
__________________
Sail on silver girl. Sail on by. Your time has come to shine.
Lumatic is offline   Reply With Quote
Old 11-05-2011, 09:46 PM   #11
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 5,648
It is not an item that I can't live without. It just gives me more heating options. I expect it is the sail switch because nothing it coming other than the fan motor. According to the service manual, the first event it that the motor comes up to speed and that sail switch enables the start sequence. The gas valve opens and the ignitor starts and after 15 seconds or so it turns the gas valve off if it does not get a signal from the thermocouple. Since none of this is happening, then the sail switch is probably the culprit or the control board.

Perry
__________________
perryg114 is offline   Reply With Quote
Old 11-05-2011, 10:04 PM   #12
3 Rivet Member
 
mopariac's Avatar
 
1972 29' Ambassador
Weatherford , Texas
Join Date: May 2010
Posts: 153
Images: 17
Wow...people that love vintage Airstreams, but not liking old appliances. I gave my 40 year old furnace a chance and found dobber nests in both the intake and the exhaust. I cleaned them out and it runs like new. I am not made of money so a new one was out of the question and I don't need some handyman rv tech to learn my new old appliance system for pay (I need to know how they work).
I don't know about yours, but my suburban will turn the fan on at the thermostat just by raising the temp. However, in order to light the furnace, the temp has to be set on the coolest setting before the pilot can be lit. Once the pilot is lit, raise the temp and walla...the furnace prrs like a summer dream. Hope this helps and good luck!!

Tharon
__________________
mopariac is offline   Reply With Quote
Old 11-05-2011, 10:07 PM   #13
Rivet Master
 
4RXLA's Avatar
 
1977 31' Excella 500
West Sacramento , California
Join Date: Feb 2008
Posts: 533
Images: 33
Blog Entries: 12
Perry, FWIW the original furnace in my 77 works great and gets serviced regularly.
__________________
4RXLA is offline   Reply With Quote
Old 11-06-2011, 06:44 AM   #14
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 5,648
Well I do understand where they are coming from. If you don't know what you are doing and you don't pay attention you can get hurt. CO poisoning is probably the biggest problem to worry about. If you can smell propane when the furnance is running chances are you have a leak in the heat exchanger. It is always a good idea to have a CO detector when running gas appliances.

Perry
__________________

__________________
perryg114 is offline   Reply With Quote
Reply


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
Furnace Problem NOAZRK2690 Furnaces, Heaters, Fireplaces & Air Conditioning 10 04-10-2014 09:34 AM
Duo-therm and furnace question... NoMoSOBs Furnaces, Heaters, Fireplaces & Air Conditioning 13 10-21-2011 10:17 AM
Looking for furnace LRPorter Furnaces, Heaters, Fireplaces & Air Conditioning 4 09-29-2011 02:52 PM
Need advice on furnace. SilverRanger Furnaces, Heaters, Fireplaces & Air Conditioning 5 05-28-2011 04:47 PM
Suburban furnace replacement for '66 Trade Wind Ben in MT Furnaces, Heaters, Fireplaces & Air Conditioning 0 05-17-2011 09:12 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:40 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.