It will be hot for a 20mins then it just blows cold air I have shutt it off and turned back on that seemed to work but it still keeps blowing cold air can I get some suggestion?pretty please!!
1977rockwood thank you in advance!

Views: 140

Reply to This

Replies to This Discussion

Sounds like a problem I had a while back,,,, Make sure your regulator is working properly,,,If the pressure drops,, it will kick the furnace off,(excluding the motor).My regulator was approx a year old and it bit the dust,, it happens. ALSO,, check for Mud wasps nest and debri.  I took my furnace completely out and cleaned it all out,, had a few hidden dauber nests inside the burner tube. You Tube has a few video's of what others have done and show what they have cleaned out of their furnaces.. And YES, Mud daubers can and will sneak through the screen and build a condo complex inside the furnace tube. Whats funny is,, during spring and summer,, they can build a nest in a matter of a few days,, And with furnaces, it dont take much to throw them outta wack.   Good luck,, keep us posted what you find.

Thermocouple is my guess if you have enough LP gas pressure to the line. A lot of those are the 12v furnaces by Suburban that need about 11 lbs of pressure to operate. The termocouple going bad would cause the pilot to go out and stop the heater portion.

Found this to be one of the better suppliers with diagrams and such. I have a Suburban NT24M I'm working on now.

http://www.pplmotorhomes.com/parts/rv-furnaces/rv-furnace-parts-ins...

I will definitely check that out Daniel I plan on pulling it out this summer and cleaning it and everything
Make and model of the furnace is a good start. Make sure none of the vents are obstructed, you may be short cycling the high temp limit. You can run it with the interior door panel off exposing the heat element, that would let you know. Don't do this with dometic 900/901 series furnace. If LP tank was overfilled, you could be freezing the reg evidenced by frost on the reg. Low lp level could be preventing the liquid from vaporizing but that would be in severe cold. You want 11 water column inches or a little less than .5 lbs pressure on the gas.
Hi David I am hoping to be able to get the make and sell of the furnace tomorrow right now the way it is parked I can't get close enough to really see anything from the outside. I didn't find I put a new tank on it with a hose one end had a bigger hole in it then the other end going into the tank and that seemed to make a difference I haven't had a problem with it.i will have more information as tomorrow we are going to mow it so we can start brake work on her! Thank you for the great information!
The ductwork I was referring to was the interior heater ducts. Either in floor or walls that may be cover with carpet or ?

Just FYI  and something to look for on this subject, David Craft hit on a good point to look for.

While I was doing the tear out of all the bad stuff in a water damaged unit, I happened to look under the couch/pull out bed.  The heater duct from the furnace to the register vent had been almost completely crushed closed.by the couch frame that was sitting on it.  It was probably only allowing 20% airflow through it.  Also the register vent, located at the front and under the couch was partially blocked by some eons old shag carpeting.

It's hard to believe any heat got through this RV at all. LOL

Thanks guys I'm definitely going to get this taken care of this summer before fall as I am living in her they the winter. Tina great information I'm gonna check that out too.

RSS

Members

HOW TO MEMBER POSTS

  •         How To Links 

-Search Good Old RV's

-Start a New Group 

-Roof Repair Photos & Products

-Repair an RV Roof

-Pick Roof Sealer   

-Understanding RV Electrical Systems 

-Get RV Insurance   

-What to Look For When Buying a Used RV

-Jack Installs Fuel Injection in his Dodge 

 RV ARTISTS 

 

 Artist Roads                                              

                      

JOIN US AT GOOD OLD RVS

If you love classic and vintage RVs then come Join us. Come on in and have some fun. JOIN HERE NOW

Forum

Norris Smokey Trailer

Started by Sell in General Discussion Forum 14 hours ago.

Onan BF 4000 Watt Generator

Started by Todd Gill in Vintage Camper Parts For Sale on Saturday.

Oil and Oil Filter for 1974 Travco 440 engine 3 Replies

Started by Kevin H Grosse in RV Repair & Maintence. Last reply by GypsyR Oct 30.

Blog Posts

Not OLD enough

Posted by jim bornemann on November 29, 2021 at 8:17pm

NEED A HATCH DOOR!

Posted by matt zodrow on October 25, 2021 at 10:05am

JAMEE ll owners manual needed- 1981 or 1982 or 1983

Posted by Don Novak on October 9, 2021 at 10:50pm — 1 Comment

Anyone got a manual for my camper ?

Posted by Pacy on September 21, 2021 at 10:17am

Anyone know what year this Corsair could be.

Posted by Jay M Ball on August 22, 2021 at 6:24pm — 1 Comment

Videos

  • Add Videos
  • View All

JOIN US - COME ON IN!

If you love classic and vintage RVs then come Join us.

 Come on in and have some fun.      

 Dedicated to a simpler, more rewarding and fun way of life in a Good Old RV... 

Vintage Travel Trailers, Vintage Campers, Camper Restoration, Bus Conversions, Vintage RV Forums, Old RVs, Tiny Homes, Boondocking

A work of art by member Paige Bridges

+++++++++++++++++++++++++++++

 Disclaimer - Please Read it

Enjoy this site and use it totally at your own risk.

By using or viewing this site YOU agree to Hold Harmless anyone associated with it including other members. Also, YOU agree that YOU are solely responsible for ANY and ALL actions, results or damages. Members "opinions" are just that and any repair or alteration comments or recommendations are by folks who are not licensed repair  or mechanical professionals. Any repairs or modifications you do totally at YOUR OWN RISK. Use licensed professionals for all work to avoid possible serious injury or damage. Use  banks for purchases.  Have fun!

Copywrite & Trade Mark Registered GoodOldRV© ,GoodOldRVs©, GoodOldRVs.com©,GoodOldRVs.net©,GoodOldRV.Com©

© 2021   Created by Russell E Johnson.   Powered by

Badges  |  Report an Issue  |  Terms of Service