Reply
 
Thread Tools Search this Thread Display Modes
 
Old 02-21-2013, 10:56 PM   #1
1 Rivet Member
 
1984 31' Excella
Turlock , California
Join Date: Apr 2012
Posts: 7
Therm'X model 635 Catalytic heater

I've had lots of trouble getting the heater to light. It flames up and down the surface but will not stay lit when I rotate the knob from pilot to low or high. I've held the button in for the 45 seconds and longer as the directions requests. Any ideas on what to fix ?
__________________

__________________
Leesmith is offline   Reply With Quote
Old 02-22-2013, 02:27 AM   #2
Rivet Master
 
RickDavis's Avatar

 
1961 24' Tradewind
1969 29' Ambassador
1970 21' Globetrotter
Jamestown , Tennessee
Join Date: Jul 2008
Posts: 1,709
It may not be broken.
When lighting this type of heater the flame is only visible during the lighting process which warms the catalytic material. After you release the lighting button or knob, whatever you have, the flame goes out but heat should continue to radiate from the pad. You may see a slight red glow in the dark, but nothing in normal light.
Hold your hand near it and feel for heat.
When lighting , I usually wave my hand at it to move the flame across the pad more evenly.
__________________

__________________
Rick Davis 1602 TAC TN-2 K8DOC
61 tradewind, plus a few others
13 Ram 2500 TD
99 Dodge TD 577K miles

RickDavis is offline   Reply With Quote
Old 02-22-2013, 09:22 PM   #3
1 Rivet Member
 
1984 31' Excella
Turlock , California
Join Date: Apr 2012
Posts: 7
That would be great if it was really working and I just didn't realize it. I can hear the gas shut off when I slowly turn the knob to low. I'm pretty sure that it isn't lit. I've checked the thermocouple and it is good. My suspect is the valve but I'm not sure if there could be something else I'm not aware of. Thanks for the encouraging idea.
__________________
Leesmith is offline   Reply With Quote
Old 02-22-2013, 10:14 PM   #4
Rivet Master

 
Southwestern , Ohio
Join Date: Nov 2006
Posts: 1,432
Quote:
Originally Posted by Leesmith View Post
I can hear the gas shut off when I slowly turn the knob to low.
Maybe the solution is not to turn the knob to "low". To stay lit, the catalytic wool (or whatever it's called) has to put out enough heat to keep the thermocouple hot. Ours will stay lit on the high setting, but not always on low.
.
__________________
Nuvite-F is offline   Reply With Quote
Old 02-22-2013, 10:24 PM   #5
1 Rivet Member
 
1984 31' Excella
Turlock , California
Join Date: Apr 2012
Posts: 7
Great! I'll give that a try. I have to go thru "low" before it turns to high. It usually goes off on low. If I turn it fast enough, maybe it will keep the gas flow going long enough to keep it going. The trailer is in the shop right now so ill try that when I get it back. It's on the shop for the main furnace problems. Thanks.
__________________
Leesmith is offline   Reply With Quote
Old 02-23-2013, 09:17 AM   #6
Rivet Master
 
1988 32' Excella
Robbinsville , New Jersey
Join Date: May 2012
Posts: 964
Quote:
Originally Posted by Leesmith View Post
Great! I'll give that a try. I have to go thru "low" before it turns to high. It usually goes off on low. If I turn it fast enough, maybe it will keep the gas flow going long enough to keep it going. The trailer is in the shop right now so ill try that when I get it back. It's on the shop for the main furnace problems. Thanks.
What is the problem with the main furnace?

If the furnace is having trouble lighting or staying lit it could be related.
Possibly propane flow restriction or regulator starting to go bad.
__________________
Wazbro is online now   Reply With Quote
Old 02-23-2013, 10:19 AM   #7
1 Rivet Member
 
1984 31' Excella
Turlock , California
Join Date: Apr 2012
Posts: 7
It could be connected. We'll find out what the shop says. The main furnace does light and runs for awhile but then shuts off the heat but keeps blowing cold air. Then it may heat up again before the fan turns off. The catalytic heater won't work with nothing else on.
__________________
Leesmith is offline   Reply With Quote
Old 02-23-2013, 11:53 AM   #8
Rivet Master
 
RickDavis's Avatar

 
1961 24' Tradewind
1969 29' Ambassador
1970 21' Globetrotter
Jamestown , Tennessee
Join Date: Jul 2008
Posts: 1,709
The fan will continue to run on the furnace for a while after burner shut down to purge any unwanted gasses. I wintered through one time and the blower never would shut off in cold weather although the burner would cycle on and off.. I finally put an indicator light across the valve to convince myself that it wasn't burning gas all that time
__________________

__________________
Rick Davis 1602 TAC TN-2 K8DOC
61 tradewind, plus a few others
13 Ram 2500 TD
99 Dodge TD 577K miles

RickDavis 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





Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

RV & Travel Trailer Communities

Our RV & Travel Trailer sites encompasses virtually all types of Recreational Vehicles, from brand-specific to general RV communities.

» More about our RV Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002-2012 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 06:11 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.

Airstream News Delivered to your Email!

Stay up-to-date with Airstream news in your inbox!

unsusbcribe at anytime with one click

Close [X]