Reply
 
Thread Tools Search this Thread Display Modes
 
Old 02-01-2005, 10:26 AM   #1
1 Rivet Member
 
Join Date: Oct 2004
Posts: 13
Suburban Furnace

Hi folks, I sure hope someone with some "expert" knowledge can help me out. I removed my Suburban furnace from my 68 Ambassador, disassembled and cleaned, repaired the fan and ran a bench test. The little fella fired up and ran great. Reinstalled it and now nothing but click, click, click when the thermostat is activated. Bipassed the thermo.......same thing. The pilot light remains lit throughout. Any ideas what the problem is? I would appreaciate any advice given.
__________________

__________________
68LANDYACHT is offline   Reply With Quote
Old 02-01-2005, 01:52 PM   #2
2 Rivet Member
 
Join Date: Jan 2004
Posts: 93
Not an expert,

and this may be something you have eliminated as a cause, but are you SURE you are getting propane to the furnace? Hissing alone is not proof if what is being delivered is air in the supply pipes, which does not burn well.

Whenever I have opened the supply piping, it has been a process to get burnable gas to all the appliances. Lighting the stovetop helps to move the propane through, but it is usually still something of a struggle to purge all the air.
__________________

__________________
bobechs is offline   Reply With Quote
Old 02-01-2005, 02:09 PM   #3
Just a member
 
thenewkid64's Avatar
 
1978 28' Argosy 28
Tampa Bay , Florida
Join Date: Mar 2002
Posts: 4,539
Images: 21
Send a message via AIM to thenewkid64 Send a message via Yahoo to thenewkid64 Send a message via Skype™ to thenewkid64
Does the blower motor spin up? I would check the wiring to it first. The click you are hearing is likely the motor start relay. If the blower is not blowing the main burner will never ignite
__________________
Brett G
WBCCI #5501 AIR # 49
-------------------------
1978 Argosy 28 foot Motorhome

Wise men talk because they have something to say; fools, because they have to say something. -- Plato


thenewkid64 is offline   Reply With Quote
Old 02-01-2005, 02:54 PM   #4
1 Rivet Member
 
Join Date: Oct 2004
Posts: 13
Suburban Furnace

When I ran the bench test all seemed well. I didn't even need to adjust the flame on the burner. When I reinstalled it is when all I got was the clicking response. It is not getting gas to the burner at this present nor will the fan activate.
__________________
68LANDYACHT is offline   Reply With Quote
Old 02-01-2005, 03:02 PM   #5
Just a member
 
thenewkid64's Avatar
 
1978 28' Argosy 28
Tampa Bay , Florida
Join Date: Mar 2002
Posts: 4,539
Images: 21
Send a message via AIM to thenewkid64 Send a message via Yahoo to thenewkid64 Send a message via Skype™ to thenewkid64
I would be willing to bet a wire has been knocked loose to the fan motor, or the reinstall has jammed the blower somehow.

The typical start up sequence is as follows.

Call for heat

Start fan. I think this is the click you are hearing, but no spin on fan motor.

See sail switch close from force of air blowing in heat exchanger

Open gas valve to light main burner. The gas valve will not open if pilot is not lit due to thermocouple safety system. On an electronic ignition model this would be the igniter's job. There is a temp probe that must be satisfied to maintain operation even then.

Blow heat.

Shutdown:

Temp. reached

Shutdown burner by closing main gas valve

Run fan until exchanger has cooled to preset temp or for a preset amount of time.


So until the fan spins the main burner will not light.
__________________
Brett G
WBCCI #5501 AIR # 49
-------------------------
1978 Argosy 28 foot Motorhome

Wise men talk because they have something to say; fools, because they have to say something. -- Plato


thenewkid64 is offline   Reply With Quote
Old 02-01-2005, 03:04 PM   #6
1 Rivet Member
 
Join Date: Oct 2004
Posts: 13
Suburban Furnace

I'll try the replacing relay first. Maybe I'll get lucky. Thanks.
__________________
68LANDYACHT is offline   Reply With Quote
Old 02-02-2005, 10:58 AM   #7
Rivet Master
 
LOST , Hawaii
Join Date: Jun 2002
Posts: 2,193
Jumper around the relay and see if the fan works.

John
__________________
74Argosy24MH is offline   Reply With Quote
Old 02-02-2005, 06:18 PM   #8
Rivet Master
 
garry's Avatar
 
1969 31' Sovereign
Broken Arrow , Oklahoma
Join Date: Jan 2003
Posts: 1,362
Images: 7
Sail switch can be checked with an ohm meter. Just because it moves does not mean it is good. However; since all worked on the bench then I agree with the others no gas. It takes me a good 5 min or more to purge the air after reconnecting the gas line and that is after turning on the range burners.

Garry
__________________
garry is offline   Reply With Quote
Old 02-03-2005, 10:00 AM   #9
1 Rivet Member
 
Join Date: Oct 2004
Posts: 13
Furnace

Would that apply, Garry, considering the pilot was/is burning fine?
__________________
68LANDYACHT is offline   Reply With Quote
Old 02-03-2005, 10:20 AM   #10
Just a member
 
thenewkid64's Avatar
 
1978 28' Argosy 28
Tampa Bay , Florida
Join Date: Mar 2002
Posts: 4,539
Images: 21
Send a message via AIM to thenewkid64 Send a message via Yahoo to thenewkid64 Send a message via Skype™ to thenewkid64
If the pilot was burning fine, then the gas IS to the main gas valve on the furnace.

If the blower motor does not spin, you are in a lock out situation the rest of the unit will not function for safety reasons.
__________________

__________________
Brett G
WBCCI #5501 AIR # 49
-------------------------
1978 Argosy 28 foot Motorhome

Wise men talk because they have something to say; fools, because they have to say something. -- Plato


thenewkid64 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
Suburban Furnace recall !!! NewStreamer Furnaces, Heaters, Fireplaces & Air Conditioning 34 11-26-2015 04:29 PM
72 Airstream International Furnace parts loechli Furnaces, Heaters, Fireplaces & Air Conditioning 7 08-20-2008 08:17 PM
Jingle Bell Furnace Fix Pahaska Furnaces, Heaters, Fireplaces & Air Conditioning 5 11-19-2002 10:59 PM
1973 Furnace Book 74SovereignInt. Furnaces, Heaters, Fireplaces & Air Conditioning 4 10-08-2002 08:59 PM
Need Suburban Furnace Cover For 79/31' Soverign montanaandy Furnaces, Heaters, Fireplaces & Air Conditioning 0 07-29-2002 11:54 AM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:08 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.