Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-17-2020, 04:59 AM   #21
Rivet Master
 
2018 25' International
Slidell , Louisiana
Join Date: Sep 2017
Posts: 2,321
You can make a cheap flow tester with some paper and scotch tape. a paper cylinder to fit snugly around the black plastic duct register cover the end with a half moon paper and the other half use tape as a hinge and another oversized half moon as a flap. then check each register to see if the flap opens about the same amount.
__________________
Brian
BayouBiker is offline   Reply With Quote
Old 09-17-2020, 06:29 AM   #22
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 BayouBiker View Post
You can make a cheap flow tester with some paper and scotch tape. a paper cylinder to fit snugly around the black plastic duct register cover the end with a half moon paper and the other half use tape as a hinge and another oversized half moon as a flap. then check each register to see if the flap opens about the same amount.
Brian, good one nice and simple.

Each model, different routing and flow. A good visual insp and look for maybe something that fell from storage onto hose or restrictions to return air flow. My furnace is under the sink and pulling the shelf allows for a good peak at the hoses. Then follow to distribution registers.

In one of Darren's videos the bench test one IIRC he said do not put any type of filter in the return air flow.

Sitting here waiting for the rains to hit from Sally a bit latter.

Gary
__________________
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 09-20-2020, 11:03 AM   #23
Steve C
 
2018 25' International
Petaluma , California
Join Date: Mar 2019
Posts: 28
Update

Quick update: first much thanks to all of you! First - thus problem has been intermittent since May. I went months without and issue and a few weeks ago it recurred. At the end it went from an occasional non response to the thermostat to no ignition at all. Three tries and ignition lock out fault. So after replacing the sails switch 3x, replacing the limit switch 1x I zero'd in on the spark electrode. Replaced it yesterday (a little challenging but doable by an idiot like me)....butkus. Blower on/gas on/click on the electrode...no flame....lock out. My next move was to replace the board with a Dinosaur universal. Did this yesterday and the furnace fired right up...Cycled all evening with no problems. I need a couple of weeks of normal ops before I fully trust it - but good sign. I assume my board was slowly failing - and seemed to not work at all at the end. Interestingly my Atwood was modified prior to my purchase - Atwood had a defect where the horizontal boards were being damaged by water - compartment leaks and pools on the board. So their fix was to pitch the board up at a 45 degree angle. the Dinosaur won't fit the bracket....so I used a little velcro tape to gently fit the board in - velcro rather than a screw now holds the bracket. The board isn't secured to anything but the velcro'd bracket keeps if from pitching up and the cushion of wires keeps it from dropping....so its not tight but not going anywhere. All I could think of
moby_1851 is offline   Reply With Quote
Old 09-20-2020, 05:41 PM   #24
2 Rivet Member
 
Shads Shack's Avatar
 
2005 22' International CCD
Pittsburgh , Pennsylvania
Join Date: Jan 2012
Posts: 47
A quick check would be the ground wire connection in the external compartment.


Corrosion can shut the entire system down, and can be intermittent.


I now check the connection periodically as it has shut me down a couple of times.
Shads Shack is offline   Reply With Quote
Old 09-24-2020, 10:13 AM   #25
2 Rivet Member
 
Currently Looking...
Orange , California
Join Date: Jul 2018
Posts: 31
sail blade

Quote:
Originally Posted by moby_1851 View Post
I have a 2018 International with an Atwood. my problem is intermittent - sometimes weeks go by, sometimes hours between issues. Naturally it doesn't happen when I have a tech on scene - so everyone is guessing.

First - the furnace works. The blower and flame are fine. When I set the thermostat the furnace blower goes on and the flame ignites.

The problem is after - as noted - a week or a day - of normal operations, the furnace will suddenly not respond to my temperature setting on the thermostat.

The first time the temp dropped into the 40s inside - I woke up cold and that was the start of it.

To get the furnace to restart I turn the thermostat off and on again and it starts.

I have replaced: 1) The wall thermostat 2) The limit switch 3) The sail switch AND sail switch bracket. I am on my third sail switch in 23 months so I feel safe saying it isn't any of these issues. Somebody suggested a blockage in the ducting, but except for the bathroom (which is small - so I assume its not the issue), I get good air our of all. Any ideas?

We had the same problem and discovered it was the sail blade. It MUST be able to move freely, also, it's position in relation to the switch is very important!
Big Thunder 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
Obascure Dometic/Atwood Furnace Malfunction moby_1851 Furnaces, Heaters, Fireplaces & Air Conditioning 7 05-26-2020 05:01 PM
Intermittent Gas Furnace Ignition Failure solar-guy Sprinter and B-van Forum 4 12-02-2016 08:42 AM
GM truck antilock brake malfunction dwightdi Tow Vehicles 20 03-13-2006 04:38 PM
345 LP Tank Gauge Malfunction cooperhawk LP Gas, Piping, Tanks & Regulators 1 12-06-2005 01:36 PM
water heater malfunction--help! ready to depart for xmas trip! susanborck Water Heaters, Filters & Pumps 23 12-22-2003 10:31 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 08:38 PM.


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