Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-06-2020, 06:57 AM   #1
1 Rivet Member
 
Currently Looking...
Currently Looking...
LLLLLLLLL , Maine
Join Date: Jan 2019
Posts: 16
No response from furnace

I have been searching and cannot find what is happening. I have a 2008 Classic Limited. The thermostat works with all other functions except the furnace. There is no response from the furnace at all. I have cleaned the sail switch.

My next plan is the change out the control board. I am searching the Dinosaur website but having trouble narrowing down which board I need.

Has anyone replaced one? Can you tell me which ID I need front he current board to order the new board? Thank you for any help.
pdk9 is offline   Reply With Quote
Old 09-06-2020, 07:13 AM   #2
4 Rivet Member
 
2019 27' International
Western NC , North Carolina
Join Date: Jun 2019
Posts: 401
Images: 1
Blog Entries: 1
Are you getting power to the furnace? Have you checked all the fuses/breaker? Nothing at all sounds like a power issue.
__________________
2019 International Serenity 27 FBQ “TC Escape”

2019 Ford F-350 Platinum
JonDNC is offline   Reply With Quote
Old 09-06-2020, 07:17 AM   #3
Rivet Master
 
Al and Missy's Avatar

 
2002 30' Classic S/O
Melbourne Beach , Florida
Join Date: Nov 2013
Posts: 4,149
By “no response” I presume you mean not even the fan turns on. If true then:
1. The furnace has no power or,
2. The AC is not calling for heat or,
3. There is a problem in the furnace. Terminal corrosion is often a problem. Get access to the wiring in the furnace and disconnect the spade lug wires and reconnect them to clean the contacts.

Does the furnace have power?
Have you reset it by turning the switch off and back on at the furnace?
Assuming you have a Comfort Control thermostat and not a separate thermostat for the furnace, do you see furnace on the thermostat?
Do you have dual ACs? The furnace only works in Zone 1.
The thermostat tells the AC to heat and and the AC turns on the furnace. Before you replace the board, make sure the AC is calling for heat from the furnace. It shorts the two blue wires accessible when the bottom cover is removedfrom the AC.
__________________
“You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO WBCCI 1322
2002 Classic 30 Slideout -S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
Al and Missy is online now   Reply With Quote
Old 09-06-2020, 07:36 AM   #4
Slide Out Society #001
 
GCinSC2's Avatar
 
2007 30' Classic S/O
Somewhere , South Carolina
Join Date: Apr 2010
Posts: 3,932
Diagnose further first then spend money.

Any light lit on control board?
__________________
S/OS #001
2005 Dodge Ram 2500 5.9L 6 Speed
16" Michelins, Hi Spec Wheels, Max Brake, Carslile Actuator, Equal-i-zer, Dill TPMS. Campfire cook.
GCinSC2 is offline   Reply With Quote
Old 09-06-2020, 07:50 AM   #5
1 Rivet Member
 
Currently Looking...
Currently Looking...
LLLLLLLLL , Maine
Join Date: Jan 2019
Posts: 16
I apologize for the delay, I can’t hit the WiFi while at the furnace itself... I am home now so I will hook up power and then turn it on.

-all fuses are good
-only one AC, so I will make sure in “zone 1” as I wasn’t aware of that

I will reply with what is happening. Thank you for help.
pdk9 is offline   Reply With Quote
Old 09-06-2020, 08:03 AM   #6
Slide Out Society #001
 
GCinSC2's Avatar
 
2007 30' Classic S/O
Somewhere , South Carolina
Join Date: Apr 2010
Posts: 3,932
Darren has many furnace repair and diagnostic Videos example:

M
__________________
S/OS #001
2005 Dodge Ram 2500 5.9L 6 Speed
16" Michelins, Hi Spec Wheels, Max Brake, Carslile Actuator, Equal-i-zer, Dill TPMS. Campfire cook.
GCinSC2 is offline   Reply With Quote
Old 09-06-2020, 08:32 AM   #7
Rivet Master
 
Al and Missy's Avatar

 
2002 30' Classic S/O
Melbourne Beach , Florida
Join Date: Nov 2013
Posts: 4,149
Sequence of events:
Thermostat calls for heat to AC (in furnace mode)
AC calls for heat to furnace
Fan turns on
Sail switch tells control board OK
Control board opens gas valve (or tries to- if gas valve works and you have gas you might be able to smell it in outside furnace exhaust if igniter doesn’t light the furnace).
Control board sparks igniter
Furnace lights, or
Furnace doesn’t light
Control board tries two more times to light furnace
Furnace lights, or
Furnace doesn’t light, and
Control board faults, and
Nothing works until reset

Where in the sequence your furnace stops working is a clue.

I thought I had a bad board. It turned out to be the spark plug/ignition sensor. It had enough leakage fron the spark line to ground that the board couldn’t build up enough voltage to spark.
__________________
“You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO WBCCI 1322
2002 Classic 30 Slideout -S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
Al and Missy is online now   Reply With Quote
Old 09-06-2020, 08:46 AM   #8
1 Rivet Member
 
Currently Looking...
Currently Looking...
LLLLLLLLL , Maine
Join Date: Jan 2019
Posts: 16
I now believe that somehow I have lost all power to the furnace.
-thermostat is in zone 1, furnace mode, set at 96 degrees
-NOTHING happens at furnace (no fan, no attempted ignition, no red lights) NOTHING
-I have pulled a few of the spade connectors and scraped them, no change
-all fuses are good
-I am not sure how to ensure power is getting to furnace at this point.
-All other functions that thermostat control work properly (AC, heat pump, AC fan)
-Gas stove and fridge work fine
-Area of furnace is in clean condition and doesn’t look like anything has gotten into it.
pdk9 is offline   Reply With Quote
Old 09-06-2020, 09:07 AM   #9
Rivet Master
 
Al and Missy's Avatar

 
2002 30' Classic S/O
Melbourne Beach , Florida
Join Date: Nov 2013
Posts: 4,149
My classic has resettable circuit breakers for 12 volt stuff. A button pops out of the side of the breaker. It is not obvious it is tripped. Pushing on it with your finger probably won’t reset it. I had to use a toothpick.
__________________
“You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO WBCCI 1322
2002 Classic 30 Slideout -S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
Al and Missy is online now   Reply With Quote
Old 09-06-2020, 09:44 AM   #10
1 Rivet Member
 
1994 33' Land Yacht
APEX , NC
Join Date: Mar 2020
Posts: 19
Non contact voltage tracer

Use this if you dont have a meter:
https://www.kleintools.com/catalog/e...-50-1000-volts
RON NICKELS is offline   Reply With Quote
Old 09-06-2020, 11:14 AM   #11
:SPACE A" S/O 11 Air19745
 
guskmg's Avatar

 
2006 34' Classic S/O
Fort Worth , Texas
Join Date: Feb 2007
Posts: 1,293
Then, furnaces were assembled with 3M Scotch Lock (Blue) wiring connectors. Quit often over time they get corroded and fail causing the same problem you have. Turn on the furnace at the thermostat and go outside and open the furnace cover. Flip the switch a few times to make sure it is making good contact, then with the switch on wiggle all the wires that have the blue connectors on them,. If you get it to start then, replace them with butt connector. Since you will be dealing with two wires into one end of the butt connectors use the next larger size for the two wires and then double the single wire to take up the extra space in the single connector end. Even it this does not fix your problem, doing it will save headaches down the road. BTW, those 3M connectors caused all kinds of problems with wires from the tow vehicle to trailer pigtail sockets in yesteryear. Good tech would not use them.
guskmg
guskmg is offline   Reply With Quote
Old 09-06-2020, 12:00 PM   #12
Rivet Master
 
Al and Missy's Avatar

 
2002 30' Classic S/O
Melbourne Beach , Florida
Join Date: Nov 2013
Posts: 4,149
Quote:
Originally Posted by RON NICKELS View Post
I looked at it because I was interested. Specs say it is for AC, 50-100 volts. OP has a 12V DC problem. Have you used it on DC? If so I might still be interested.
__________________
“You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO WBCCI 1322
2002 Classic 30 Slideout -S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
Al and Missy is online now   Reply With Quote
Old 09-07-2020, 07:01 AM   #13
1 Rivet Member
 
Currently Looking...
Currently Looking...
LLLLLLLLL , Maine
Join Date: Jan 2019
Posts: 16
I am going to order a Dinosaur “Fan 50 Plus Pins” board to replace it. I will also change out the wire connectors as suggested. I was hoping to get the board and install it by this weekend but Amazon doesn’t do the overnight shipping for them now... Everything shows arrival into next week. Thank you for all the help.
pdk9 is offline   Reply With Quote
Old 09-07-2020, 08:57 AM   #14
Rivet Master
 
Al and Missy's Avatar

 
2002 30' Classic S/O
Melbourne Beach , Florida
Join Date: Nov 2013
Posts: 4,149
Quote:
Originally Posted by pdk9 View Post
I am going to order a Dinosaur “Fan 50 Plus Pins” board to replace it. I will also change out the wire connectors as suggested. I was hoping to get the board and install it by this weekend but Amazon doesn’t do the overnight shipping for them now... Everything shows arrival into next week. Thank you for all the help.
So you were getting power to the furnace?
__________________
“You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO WBCCI 1322
2002 Classic 30 Slideout -S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
Al and Missy is online now   Reply With Quote
Old 09-07-2020, 09:44 AM   #15
Slide Out Society #001
 
GCinSC2's Avatar
 
2007 30' Classic S/O
Somewhere , South Carolina
Join Date: Apr 2010
Posts: 3,932
Quote:
Originally Posted by Al and Missy View Post
So you were getting power to the furnace?


What Al said.
__________________
S/OS #001
2005 Dodge Ram 2500 5.9L 6 Speed
16" Michelins, Hi Spec Wheels, Max Brake, Carslile Actuator, Equal-i-zer, Dill TPMS. Campfire cook.
GCinSC2 is offline   Reply With Quote
Old 09-07-2020, 10:31 AM   #16
Rivet Master
 
Al and Missy's Avatar

 
2002 30' Classic S/O
Melbourne Beach , Florida
Join Date: Nov 2013
Posts: 4,149
https://www.airforums.com/forums/att...3&d=1498768271
__________________
“You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO WBCCI 1322
2002 Classic 30 Slideout -S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
Al and Missy is online now   Reply With Quote
Old 09-07-2020, 10:51 AM   #17
Rivet Master
 
Al and Missy's Avatar

 
2002 30' Classic S/O
Melbourne Beach , Florida
Join Date: Nov 2013
Posts: 4,149
The Dometic AC and thermostat control the furnace. In my 2002 Classic there are two wires accessible by removing the AC shroud inside the trailer. Pull the filter covers and you will see the screws holding the cover in place. You may be able to see the furnace control wires and where they terminate in the AC unit. Airstream's color code in 2002 (which probably didn't change by 2008) is those wires are blue and blue-white. If you disconnect them from the AC unit ad short them to the each other that should turn on the furnace. If you have power to the furnace and this doesn't work then you may need the new board. If this works, the problem is in your AC unit. Clean both ends of the telephone-style 4-wire cable between the thermostat and the AC. If you have never used the furnace, remove the cover from the electronics box and make sure the furnace switch is turned on. If it is off, set it to on and reset the AC and thermostat.
__________________
“You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO WBCCI 1322
2002 Classic 30 Slideout -S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
Al and Missy is online now   Reply With Quote
Old 09-08-2020, 07:46 AM   #18
1 Rivet Member
 
Currently Looking...
Currently Looking...
LLLLLLLLL , Maine
Join Date: Jan 2019
Posts: 16
Definitely getting power to board but not across board. There is what appears to be a tiny burn mark on the board at one of the connection points for whatever that's worth...
pdk9 is offline   Reply With Quote
Old 09-08-2020, 07:51 AM   #19
1 Rivet Member
 
Currently Looking...
Currently Looking...
LLLLLLLLL , Maine
Join Date: Jan 2019
Posts: 16
Quote:
Originally Posted by Al and Missy View Post
The Dometic AC and thermostat control the furnace. In my 2002 Classic there are two wires accessible by removing the AC shroud inside the trailer. Pull the filter covers and you will see the screws holding the cover in place. You may be able to see the furnace control wires and where they terminate in the AC unit. Airstream's color code in 2002 (which probably didn't change by 2008) is those wires are blue and blue-white. If you disconnect them from the AC unit ad short them to the each other that should turn on the furnace. If you have power to the furnace and this doesn't work then you may need the new board. If this works, the problem is in your AC unit. Clean both ends of the telephone-style 4-wire cable between the thermostat and the AC. If you have never used the furnace, remove the cover from the electronics box and make sure the furnace switch is turned on. If it is off, set it to on and reset the AC and thermostat.
I have found these 2 wires at the outside furnace area. I will locate them inside at the AC to try what you suggested but I am definitely getting power to the board. The furnace also worked without issue in the past.
pdk9 is offline   Reply With Quote
Old 09-09-2020, 07:27 AM   #20
1 Rivet Member
 
1994 33' Land Yacht
APEX , NC
Join Date: Mar 2020
Posts: 19
Ooops. DC is no go. this is for ac only. My bad
RON NICKELS 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
Why isn't a response visible in New Posts? DougZ Forum Admin, News and Member Account Info 11 06-26-2011 12:02 PM
F/Contained Emergency response lightng General Motorhome Topics 6 06-24-2010 07:14 AM
Confused Over Response to Posting flyfshr Forum Admin, News and Member Account Info 3 09-12-2005 10:38 PM
Fire Response System Over59 General Interior Topics 4 07-31-2004 10:23 PM


Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.



All times are GMT -6. The time now is 08:40 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.