Jayco RV Owners Forum
 



Reply
 
Thread Tools Display Modes
 
Old 09-04-2017, 06:12 PM   #1
Senior Member
 
Join Date: Jun 2016
Location: Denver
Posts: 1,156
Wanna know when your furnace is going to quit?

When the temps outside dip into the low 30's and you're boondocking w/out electric.


Atwood AFMD30111 - one light every three seconds means "air flow / high limit".

If it's air flow - then it's a new problem because this is season 2 and we used the furnace in March of this year.


No attempt at a spark/ignition.
The blower just runs for 20 seconds then shuts down.

Grrrrrrrrrrrrrrrrrr.
__________________

pconroy is offline   Reply With Quote
Old 09-04-2017, 06:47 PM   #2
Senior Member
 
Join Date: Aug 2016
Location: Villas NJ
Posts: 120
Sounds like bugs or mice.
__________________

__________________
2015 Pinnacle 36RSQS
2016 Chevy 3500HD Duramax
merlinhomeauto is offline   Reply With Quote
Old 09-04-2017, 07:44 PM   #3
Senior Member
 
Grumpy's Avatar
 
Join Date: Nov 2011
Location: Where ever the boss says we're going.
Posts: 6,179
Or low bat voltage, fan's not spinning fast enough.
__________________
DISNEY LOVERS
Grumpy is offline   Reply With Quote
Old 09-04-2017, 09:15 PM   #4
Senior Member
 
Join Date: Nov 2016
Location: Denver
Posts: 198
I had this happen to me once in my TT. Called the best RV tech I know who explained it was dust on the air sensor. Furnace thinks there is no flow. He to me to smack it (really smack it). Hard to believe but that worked!
__________________
Ryan, Maria, and Riley (Golden Retriever)
2018 Jayco Seneca 37TS
McGintys924 is offline   Reply With Quote
Old 09-04-2017, 09:32 PM   #5
Senior Member
 
hoppers4's Avatar
 
Join Date: Mar 2015
Location: Port Orchard
Posts: 1,348
Like was previously mentioned, the sail switch isn't getting closed. The sail switch is part of the circuit in the furnace that determines if air flow sufficient. Check your registers for shoes/slippers or some other critters.
__________________
Don
hoppers4 is offline   Reply With Quote
Old 09-05-2017, 09:22 PM   #6
Senior Member
 
Shakedown St.'s Avatar
 
Join Date: Mar 2015
Location: Bozeman
Posts: 111
Quote:
Originally Posted by pconroy View Post
When the temps outside dip into the low 30's and you're boondocking w/out electric.


Atwood AFMD30111 - one light every three seconds means "air flow / high limit".

If it's air flow - then it's a new problem because this is season 2 and we used the furnace in March of this year.


No attempt at a spark/ignition.
The blower just runs for 20 seconds then shuts down.

Grrrrrrrrrrrrrrrrrr.
Just dealt with this recently. After resetting if there is no attempt at ignition, then it's either the sail switch or low voltage. I'll bet on voltage. My problem was low voltage, caused by a faulty battery. The fan sounded normal, but was not getting up to speed in order to close the sail switch. Check your house battery!
Shakedown St. is offline   Reply With Quote
Old 09-05-2017, 09:32 PM   #7
Senior Member
 
Join Date: Jun 2016
Location: Denver
Posts: 1,156
Thanks for the suggestions. It was also happening, the next morning, when running the generator so I was thinking low voltage would not be an problem.

Wife also thinks the ducts might have been smushed a bit.

Anyway we have things to check!
Thank you all!
pconroy is offline   Reply With Quote
Old 09-06-2017, 04:39 PM   #8
Senior Member
 
Join Date: Jun 2016
Location: Denver
Posts: 1,156
Just got a response from Atwood (now Dometic) C.S. "Contact a service center..."

Googling had showed me that previously Atwood techs would tell the owner how to rule out the high-limit switch with a multimeter.

Guess those days are gone.
pconroy is offline   Reply With Quote
Old 09-06-2017, 10:35 PM   #9
Senior Member
 
Shakedown St.'s Avatar
 
Join Date: Mar 2015
Location: Bozeman
Posts: 111
Quote:
Originally Posted by pconroy View Post
Thanks for the suggestions. It was also happening, the next morning, when running the generator so I was thinking low voltage would not be an problem.

Wife also thinks the ducts might have been smushed a bit.

Anyway we have things to check!
Thank you all!
Smashed ductwork would be something to check if accessible , though it never would have worked properly with ductwork issues.

Your furnace runs on 12v whether you are plugged in, genny power, or boondocking. It can still be low voltage. It's easy to check the battery with a meter, or just run it down to the auto store for testing.
Shakedown St. is offline   Reply With Quote
Old 09-07-2017, 10:53 AM   #10
Senior Member
 
Join Date: Jun 2016
Location: Denver
Posts: 1,156
Quote:
Originally Posted by Shakedown St. View Post
Your furnace runs on 12v whether you are plugged in, genny power, or boondocking. It can still be low voltage. It's easy to check the battery with a meter, or just run it down to the auto store for testing.
Good to know - that could certainly be the issue.

I was checking the voltage, but using the Xantrex Inverter display. It was 12.3 which I thought would be enough. But it's worth double checking. Thank you!
__________________

pconroy is offline   Reply With Quote
Reply

Thread Tools
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


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Jacyo, Inc. or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 12:12 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.