Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
 

Go Back   Thor Forums > Thor Tech Forums > Maintenance and Repair
Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 06-29-2020, 12:53 AM   #1
Junior Member
 
Brand: Thor Motor Coach
Model: Vegas 25.3
State: Arkansas
Posts: 3
THOR #19406
Exclamation Heater/Furnace

Vegas 25.3 2016

Anybody know how to get the heater to lite?
Blower comes on but burner will not ignite.
We are not out of propane because the fridge and stove still run. It is a new filled bottle.

__________________
Calamity is offline   Reply With Quote
Old 06-29-2020, 01:17 AM   #2
Site Team
 
16ACE27's Avatar
 
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 9,798
THOR #7035
Does the fan run continuously or time out after about 30 seconds?

If it runs continuously the control board may be wet or bad.

If it times out after 30 seconds can you hear it trying to ignite (sparking) before it times out? If not you may have a bad igniter or a bad board.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad
2020 Chevy Colorado Z71 Trail Runner Alternate Toad
16ACE27 is offline   Reply With Quote
Old 06-29-2020, 01:24 AM   #3
Junior Member
 
Brand: Thor Motor Coach
Model: Vegas 25.3
State: Arkansas
Posts: 3
THOR #19406
Thanks.. we figured that was going to be the problem. We’ll have to get it replaced I guess.
__________________
Calamity is offline   Reply With Quote
Old 06-29-2020, 01:35 AM   #4
Site Team
 
16ACE27's Avatar
 
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 9,798
THOR #7035
Get what replaced? You didn't answer any of the questions. You may know the answers, but that doesn't help anyone else reading this thread.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad
2020 Chevy Colorado Z71 Trail Runner Alternate Toad
16ACE27 is offline   Reply With Quote
Old 06-29-2020, 01:38 AM   #5
Junior Member
 
Brand: Thor Motor Coach
Model: Vegas 25.3
State: Arkansas
Posts: 3
THOR #19406
Oh.. sorry. It’s running about 30 seconds and then goes off. So we’re thinking it’s probably a bad igniter.
__________________
Calamity is offline   Reply With Quote
Old 06-29-2020, 02:02 AM   #6
Senior Member
 
Brand: Thor Motor Coach
Model: S.O.B.
State: California
Posts: 1,367
THOR #3483
Quote:
Originally Posted by Calamity View Post
Oh.. sorry. It’s running about 30 seconds and then goes off. So we’re thinking it’s probably a bad igniter.
Seems very typical for some reason that the control boards have to be replaced. We had to have ours replaced on our very new 24.1 Axis. Oh yes, also on our new SOB..... Atwood.
__________________
axis earl is offline   Reply With Quote
Old 06-29-2020, 01:18 PM   #7
Senior Member
 
Brand: Thor Motor Coach
Model: 2013 ACE 30.1
State: Alberta
Posts: 1,382
THOR #2631
Quote:
Originally Posted by Calamity View Post
Oh.. sorry. Its running about 30 seconds and then goes off. So were thinking its probably a bad igniter.

Do you hear any sounds of sparking occurring? If the fan is shutting off after 30 seconds it sounds like the sail switch is not proving air flow from the fan to the control board. On some furnaces the sail switch is mounted on the front of the motor housing (easy access); on others it is inside the fan housing and a PIA to get to. Sometimes they stop working because of pet hair or other debris that gets caught up in the switch mechanism. There are various videos on you tube showing some examples of checking the sail switch.......or it could be a simple loose wire connection. It might well turn out to be the board but check your wiring and sail switch operation.
__________________
javelin is offline   Reply With Quote
Old 06-29-2020, 01:27 PM   #8
Site Team
 
16ACE27's Avatar
 
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 9,798
THOR #7035
On mine the furnace lit but shut down due to no flame sensed. I tried the igniter (which is also the flame sensor) but no difference. Ended up replacing the board with a Dinosaur board.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad
2020 Chevy Colorado Z71 Trail Runner Alternate Toad
16ACE27 is offline   Reply With Quote
Old 06-30-2020, 03:42 AM   #9
Senior Member
 
Brand: Thor Motor Coach
Model: Chateau 24FS
State: New Mexico
Posts: 114
THOR #12181
circuit boards fail on these things a lot. Could also be a defective sail switch. Very easy to change and cheap too. On my newer motorhome the furnace would do the same thing. I made appointment for warranty service but it started working before I made it there. this has happened several times now on different trips. The dealer will not fix it if it's working and I hate waking up cold in the middle of the night. So I blew out the the dust with compressed air and replaced the circuit board, sail switch and overheat sensors since they were cheap and easy. So far so good knock on wood!
__________________
2018 Chateau 24FS
sanjaun2 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

Disclaimer:

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




All times are GMT. The time now is 12:51 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0 PL2