Search RVMechanic.com
RV Ratings Go to Main Page RV mechanic on duty. Start at the home page.
RV Mechanic RV engine problems? RV mechanic help only a click away!

Suburban Furnace in RV

Home > Discussion Forum > Mechanic's Corner (general)

Email Author email Glen Rea  Reply to Message reply to message  Post New Message post new message      search forums
hidden layer
ATTENTION: DO NOT POST ADS IN FORUMS!
All Postings that advertise items for sale will be deleted from the Discussion Forum. You may post sale items for free in the Classifieds section. Sign up now.
All Messages in ThreadAuthorDate
Suburban Furnace in RV Bob 10-16-05  
Hi
I have a Suburban LP Furnace model SF-42F in my RV. It is only 3 months old, worked fine. Works via remote, which seems fine, but furnace won't ignite nor will the blower run. Checked fuses, circuits, Lp is chock full and turned on. Can anyone help me??? Thanks
Re: Suburban Furnace in RV Eric 2-13-09  
I have a suburban furnace model#NT200SE and when the thermostat calls for heat the blower comes on and the sail switch operates and but nothing elese ever happens. No gas valve operation or ignition. Any ideas on what to check next and how?
Re: Suburban Furnace in RV Rob 4-14-09  
Hi Bob,
Well, I'm having the same problem with my Suburban RV furnace. I'm in a 1990 Tiffin Allegro 26' and my furnace is of the NT series by Suburban.
I'm not getting any heat from the furnace. It turns on but blows only cold air. I don't turn my gas tank on all the way (heard that most people do but I try to "conserve" on my LP gas as much as possible). I've tried turning on and off several times and still only get cold air blowing. The furnace doesn't want to seem to ignite and I'm assuming it's my ignitor switch that has failed. I also have a problem with it working properly above 2,000 ft elevations i.e. such as I did while visiting the Grand Canyon, froze my bunnies off! I'm assuming it was because my batteries were low as the furnace came on once the generator was running and warmed up nicely. Since I've gotten back from the Grand Canyon, the furnace will not ignite nor heat up.
Could this be due to a bad ignitor switch? Please email me the answer(s) if possible as I may loose this site.
Thanks,
Rob
Re: Suburban Furnace in RV gordon 1-14-09  
I have a suburban model sf-42f, the furnace lights up normally and heats for about 5-7 minutes then the heat starts going away until cold, but the blower continues and doesn't shut down until i turn it off. i replaced the limit switch and bypassed the sail switch no differance. please help, not much hair left on my head. thanks
Re: Suburban Furnace in RV M. Spencer 1-8-09  
The operation of the furnace is as follows: T'stat calls for heat, 12 vdc is sent to the control board, blower motor RUNS, going through a 1 min. purge cycle, during as air passes the sail swt, which is in seriers with the overtemp swt(both swt's have to make to allow the control board to bring in the gas valves), 1 sec. after the gas valves open to allow gas to flow, the high voltage ing. cir. fires and you have heat...

hope this helps
Re: Suburban Furnace in RV Mike 6-1-09  
Just ran into the same issues that a lot of you seem to be having. Blower runs, ignites but won't stay on after 30 sec. or so..
Took my leaf blower and forced it into the heat exhaust port and a bunch of branches, twigs leafs came flying out of the fresh air inlet port. After a few mins of this, I turned on the blower and did the same thing again. Got a lot more of the twigs and crap to fly out again. Did this for about an hour to try to get as much as I could out. Seems that was the problem. The Air inlet was blocked and not enough air was getting in to feed the flame. it works now just fine, But I will continue to do this for most the summer to get even more out, and I'll cove up the vents Before I close he up this winter.

Hope this helps
Re: Suburban Furnace in RV Landis Schmehr 6-28-09  
I have a Suburban SF-30F which has worked well few month ago, not when I turn it on via t-stat, it blows the fuese on my converter, any sugestions?
Re: Suburban Furnace in RV Douglas King 10-10-09  
I have a suburban SF-35F in my trailer. The blower cycles on when I turn on the heat, I can hear the ignitor clicking and then I feel warm air for about ten seconds or so, and it gets cool again. I felt the burner tubes warm up when the ignitor stopped clicking then they got cool again, the ignitor then tried to re- light the burners and the same thing happens. Could it be the limit switch is bad and not staying closed once the burners are lit.
Re: Suburban Furnace in RV Scott 9-27-09  
Suburban Model NT 30 SP. The fan in the furnance makes a very loud sound when I turn it on. I opened the cover and do not see any insect issues. Anyone have any suggestions?
Re: Suburban Furnace in RV Jen 8-15-09  
My 2007 popup has a subruban furnace (DD-17DI)in it and we aren't getting any heat out of it. It lights just fine and the blower kicks on. The light isn't a bright blue though, more of an orange color to it. And the Exhaust is very hot, as it should be. We had it surviced for this same reason awhile ago, at a place that is now gone. They just changed the pigtail hose. My husband said it worked just fine after that, I don't remember. So this weekend we are going to replace the pigtail again before taking it into another shop to be serviced. If anyone has an idea of what could be wrong with it that would be great. Thanks
Jen
Re: Suburban Furnace in RV Glen Rea 10-7-08  
I also experienced problems with a 25F that would turn the blower on but not light. I was attempting to use the furnace at 10,000-11,000 feet of elevation/ At this elevation, there is not enough air moved by the blower to activate the sail switch. It is currently wired closed with a metal twister to get it to work. A friend had the same problem and an authorized Suburban repair technician fixed the sail switch to work at high altitude. I don't know if this is related to your problem but you might check on it.
Re: Suburban Furnace in RV John 9-22-08  
I have a 2004 outback trailer with a suburban furnace that wont light.The blowe comes on and i hear a clicking sound Does any one idea of what i can check.I am plaining on taking it apart this weekend
Thanks
Re:fuse panel layout journey dl Jerry Whitehurst 1-18-06  
Does ANYBODY have a fuse panel layout for a 2001 journey DL motorhome?
Re: Suburban Furnace in RV Wayne 10-26-05  
Hi, sorry to jump into your thread, but I also have just encountered a problem with my suburban furnace.

To start with, and not meaning to whine, but I lost my home due to hurricane Katrina, and needing a place to stay I bought a used travel trailer, 9 years old. I have never had a trailer before, and am gradually learning all of the systems and how to make them work and keep them maintained.

This trailer has a Suburban furnace, which worked perfectly yesterday when the first cold front came through here in Slidell, LA. However, this a.m., the furnace would not kick on.

I checked the thermostat by turning the A/C swith on, and the A/C came on as it should. But the furnace would not come on.

I just received a call from my girlfriend at the trailer, who now an hour later says the furnace just came on.

The trailer came with a standard book from the manufacturer, Carriage, but it says to check the furnace manual for info on it. I do not have a furnace manual. Any ideas on what the problem may be, or how to check/troubleshoot the system??

Wayne
Re: Suburban Furnace in RV dennis 10-25-05  
Hey....if it is three months old its under warranty.....dont mess with it....get off yer duff and take it to an authorized Suburban repair center.
I suspect you dont understand fully the operation of the unit. It maybe as simple as reviewing the manual in regards to the use of the wall thermostat, since you seem to indicate it works with the wireless remote control now offered in some coaches.
If you have in fact reviewed the manual, it maybe a faulty wall control.
Dennis
Re: Suburban Furnace in RV warren 1-18-13  
I have a 2006 puma camper with a suburban sf-30f it didnt give ant warning what was wrong,it came on fine and thin it sounded like jac hammers going off,i turned it off at the wall anf it stopped.. turn it back on and it does it again. its it the fan or motor
Re: Suburban Furnace in 5th Wheel Daniel 11-29-06  
Heater lights up ok but blower motor quits after 10 mins
Re: Suburban Furnace in RV Dwayne Gray 11-6-07  
My blower will run on my suburban furnace but it will not light. Does it have to have a battery connected to the trailer or does the converter do this for us? It's in a 1977 Coachman. Any help is greatly apreciated.
Re: Suburban Furnace in RV Tony Leiter 5-15-08  
I am looking for owners and installation manuals for a Suburban SF 30F furnace. Got a good deal on one-but no manuals.
Re: Suburban Furnace in RV Brian 5-8-08  
I have a propane furnace in my rv and it lites for about 10-15 sec and when the ticking of the ignitor goes away so does the flame any ideas???
Re: Suburban Furnace in RV Richard 2-12-08  
I have a 1990 Fleetwood Bounder with a suburban SF-30 furnace. The blower, ignitor and gas is getting to the burner but it still will not light. If anyone has any suggestions I would be very appreciative. Thanks
Re: Suburban Furnace in RV Dick Kresse 1-26-08  
Have used the SF-30F suburban furnace and has worked good but seem to poof quite a bit when it start and the burner seems to go on and off while burning.
Re: Suburban Furnace in RV Paul Barbour 12-15-09  
My furnace lights up but the fan is very weak. All over fans and lifgts in the rv seem to work good. Do I have a bad motor? Anyting else i shlould check?
Re: Suburban Furnace in RV Steve 9-4-09  
I'm look for owners and services manuals for a Suburban Model GT10SVA RV heater. Do you have any source (url to a website would be great)?

Thanks.
Re: Suburban sf 30 Furnace in RV Richard Mayer 4-27-11  
Have Suburban SF30 on bench troubleshooting. Blower motor runs but no 12v to gas valve. Any ideas would be appreciated. Thanks Richard,FL
Re: Suburban Furnace in RV Patrick 12-25-09  
I have a suburban furnace in my trailer
Where can I get directions for liteing
the burner? The directions are faded off and can't read. Could you help?
Re: Suburban Furnace in RV Tom 1-23-11  
When the heater first comes on it sounds like the fan is rubbing something inside the 'box", any ideas. After a couple of minutes it quiets down until its almost gone. Heats fine, just concerned. We use the unit year round.
Re: Suburban Furnace in RV candy 1-21-11  
Have a suburban nt series new thermostat and limit switch when turned on everything works good heat but after 5 to 10 minutes starts to blow out cold air please help repair guy said it was limit switch he replaced but still doing the same thing thanks...
Re: Suburban Furnace in RV pangburn 5-15-11  
I have 88 winni. with a nt34sp. Put in a new circut board and benched tested worked fine installed worked fine later it would cycle but to fast for flame to come on, what am i doing wrong? Oh yeah bypassed therm. and connected wires still the same thing. Thank you for your service.
Re: Suburban Furnace in RV Tom Coffman 6-9-11  
I have a Suburban Model GT-10D from a 1982 Rockwood tent trailer. This furnace has a fan attached to it that runs just off 3 wires that are mounted into the burner access panel, there is no power going to this furnace. Was just wondering if anyone knew what this fan system is and how it works. Once the fire box heats up the fan kicks on. I can not find any information on this fan system. The tent trailer finally died this last weekend and I'm not even going to try and fix it but this furnace must be worth something. I have put many thousands of gallons of propane thru it the last 16 years and it still works great.
Re: Suburban Furnace sf42 in RV Lavern Clarke 6-11-12  
I have a sf42 suburban furnace, it fires up good and runs for approx 2 minutes, then the flame goes out, fan continues to run all night. Will repeat the above after turning the themostat and back on. Appreciate your assistance in necessary repair.gc
Re: Suburban Furnace in RV Jim 12-28-11  
I am attempting to live in my camper through a Wiconsin winter. Main problem I have is with my Suburban NT17 furnace. The pilot lights and when the thermostat is set it fires up and works great. When set temp is reached the burner shuts off, pilot stays lit untill temp falls and furnace trys to fire up but pilot blows goes out. It is then difficult to light the pilot for a few minutes. After pilot is lit the furnace works great for the first "cycle". I have heard that the funace is quite old and parts are hard to find. I'm getting desprat and cold any info will be greatly appreciated.
Re: Suburban Furnace in RV Neville 9-2-11  
Hi i have a sf series in a 5th wheeler and it was decomissioned in australia on import
could anyone tell me if they meet australian standard as we would like to put it back into use
any help would be great
thx
Re: Suburban Furnace in RV Terry 7-28-11  
I have a NT-16SE Suburban furnace.
When I turn it on, the fan just runs long enough to activate the sail switch, then stops and keeps on repeating this. Have replaced sail switch & circuit board to no avail. Any help would be appreciated.
Re: Suburban Furnace in RV Jack 1-3-11  
I have a model SF-42 heater.
Problem is; Normal operation for about 3 heat cycles. Shutoff cause for each cycle is unknown. Usually 2-3 relights normal then NO RELIGHT, cold air only until t-stat is shut off. Unit will relight (again for 2-3 cycles) after cycling the tstat off then back on. Gas pressure good, voltages good. I plan on installing electrical test connections that can be accesed from external installed location.

Question, Does anyone have accurate information about the circuit board logic?
Re: Suburban Furnace in RV Tony 2-10-11  
My heater would turn on and shut off as it reaches the set Temp. on the thermostat but wouldnt turn back on when the Temp drops. I have to set the thermostat back to off position to turn the heater back on again. So I bought a new Suburban Thermostat and it doest the same thing. I have 2 wires coming from the furnace to thermotat. I believe is Red and White. Any suggestions? Thank You
Re: Suburban Furnace in RV Carion 2-22-10  
I have a 2005 Montana RV with an SF series Suburban furnace. When I turn on my furnace I only get a clicking sound, no blower, no heat. Could this be caused by the circuit board?
Re: Suburban Furnace in RV Joni 2-19-10  
I am having the same problem. I am living in my Starcraft full time and so in the middle of the night the blower kicks on but no heat so I have instant air conditioner. You can hear the igniter but no hot air. If I leave the thermostat above seventy it runs fine but it roasts me out of here. We have a cold front coming in and I would love to fix this problem. I had a mobile RV repair man out here but he didn't help much. Anyone have any ideas?
Re: Suburban Furnace in RV tommy vega 10-24-10  
I cannot get my furnace to kick on. i use a dometic duo-therm remote. have changed the batterithe reciever is one. on the reciever to the left says UNIT ON below unit on says TIMER below timer says FURNACE to the right says COOL below cool says HEAT onthe remote you can select different symbols with a mode selection. example snowflake for cool and flame for furnace or heat. when i select the flame the unit on and heat light luminate but the furnace does not come on i have changed the batteries on the remote still dont have any luck can u please help me my ph is 575 430 1512
Re: Suburban Furnace in RV Sherry / Sun City RV 1-8-10  
Does Suburban have a flat rate manual and how can I get one?
Re: Suburban Furnace in RV Ruben Fernandez 3-10-10  
I need Instalation and Owner manual for
a Suburban Furnace SF 30
Thanks
Re: Suburban Furnace in RV Paul Blausey 2-8-10  
Hi I have a 42 ft Entegra coach with a sf42f furnace in it. I have used the coach 2 times when it was below 30 degrees. It will run fine when the coach is parked. When I drive it the furnace will stop within 5 miles. We have replaced the high temp switch. no help. Installed another outlet vent thinking it was over heating, no help. Called factory and they said they will work on it. I hope there is a solution to the problem. Had a 38ft coach with a smaller furnace in it and it never quit. Any ideas on a solution? When you spend 300m on a coach the furnace should work. Paul (frustrated) Blausey
Re: Suburban Furnace in RV mike 3-24-10  
I have a 2003 thor tahoe with a suburban model # N388773 furnace in it,I was wondering where I could find a manual for it.
Re: Suburban Furnace in RV Jerry 10-14-10  
I have a suburban nt-24sp furnace that runs some of the time and then kicks out and the blower stays running. If I manually shut the thermostat off and turn it back on then the furnace will re-ignite and works fine. What could be the problem. Usually happens at night when I'm sleeping.
Re: Suburban Furnace in RV Derrick 9-25-10  
Turn furnace on and i hear a click and it blows the 15 amp fuse and then nothing. Can you tell me what is wrong or what to check.

Thank you
Re: Suburban Furnace in RV Doug 9-21-10  
I have a 2001 KZ SPort 27 ft. Never needed to use the furnace/Heater until this year, blower comes on but does not light, noticed a yellow wire (coming from inside the furnace) says 12volt ground, but does not appear to be connected to anything.....
Re: Suburban Furnace in RV S. Wade 3-31-10  
Have a Suburban furnace in our 5th wheel - fan starts, runs for a few sec. then switches off. No heat, cool, cold or anything. What do you suppose it is? Has been running fine.
Thank you
Re: Suburban Furnace in RV Robbie 5-23-06  
I have a suburban furnace in a 98 flagstaff pop up that is not working. When I turn it on the fan blows, it makes a clicking noise, I can see a spark, but will not light. I can go to the outside vent and smell gas too. Any thoughts???
Re: Suburban Furnace in RV Alan McRae 10-27-05  
Wayne,

My furnace had a similar problem and I was able to remedy it by removing the ingiter and cleaning the leads which had sooted up. You might try checking them.

Alan
Re: Suburban Furnace in RV Larry Patterson 10-14-07  
I have a Suburban heater in my 5er and it poofed on day and shut off. It comes on the blower works but ignites on for a second then goes back out. I replaced the board and all. It worked pretty good on the dealer bench but not in the rv. Help me if you can....
Re: Re:fuse panel layout journey dl Gordon 5-4-09  
I have a 2001 Gulfstream sport class c with a suburban gas furnace SF-30. After sitting all winter I went to start up heater and can only get blower to come on for about three minutes NO HEAT. Suggestions?
Re: Suburban Furnace in 5th Wheel George 10-27-11  
Need owners manual for NT16SE in pdf format
Re: Suburban Furnace in 5th Wheel S. Wade 3-31-10  
The blower on my Suburban Furnace in my 5th wheel (30') runs for a few minutes, then kicks out. No ignition for heat, dry or cool. It has worked fine up to now. Thank you
Re: Suburban Furnace in RV Dale 4-4-08  
I had the problem with my SF-30F Suburban (Fan but no burn). There are 4 switches in series, ON-OFF in the furnace, Thermostat/wires, Limit, & Sail switch. The final voltage thru these switches and wiring to the ignitor board must be at least 9 VDC when the gas solenoid is on (.75 amps). I had a loose rivet VDC supply wire which resulted in 7-8 VDC to the board when the solenoid turned on. You can check this voltage by removing the end cover and measuring it between the limit switch and the furnace shroud (ground). I replaced the thermostat and ran new power wires with #14 wire.
Re: Suburban Furnace in RV Cheryl Fannin 11-6-11  
We have a Suburban furnace NT40 in our Montana 5th wheel. The furnace will not ignite and when we turn it on, the blower will blow for about one minute then it goes off. What is our problem?
Re: Suburban Furnace in RV Elmer 9-22-10  
Make sure that the orfice on the burner is not clogged. I had a similar problem and found fleas blocking the burner orfice. The bad news is that you need to remove the unit, take it out of its cage, disconnect the feed line to the burner from the top of the gas valve, and pull the burner out of the plenum after removing all of the screws holding it in. Be careful not to damage the gasket that seals the burner plate to the plenum.
Re: Suburban Furnace in RV Jean 7-15-09  
I had a new Suburban NT45 put in my Rv this spring and they had many problems at the time. It was sent back to the factory several times and then reinstalled. It is doing the exact same thing again, nothing at all and the repair man has given up on me. I changed the ignitor but nothing. Any ideas?
Thanks for any information.
Jean
Re: Suburban Furnace in RV Elmer 9-22-10  
Make sure that the burner orfice is not clogged with something. Mine was doing the same thing, so I removed the furnace, hooked up a battery and some propane, and tried to fire it up. I got heat for a split second and then no more heat. I removed the burner from the valve and the top of the plenum and found that there were 4 small fleas clogging the burner.
Re: Suburban Furnace in RV Connie R. 12-10-11  
I have a 2006 Hornet,we are living in while building a new home.We ran out of butane,the heater was trying to come on,replaced butane,now only the blower comes on & a clicking noise like it's trying to ignite,but nothing happens it only blows out cold air.I don't have a book to help me with this problem.I would appreciate any advice you could give me to fix this problem. Thank You,Connie
Re: Suburban Furnace in RV Tim Francisco 1-7-10  
Apparently I have a common problem, but can't find the answer. I have a SF-30 Suburban furnace, in warmer weather works fine (when you don't need it) but the outside temperature is 45 degree and the blower come on, you can here it try and ignite but no fire. last week the tempeture was in the high sixties it would light, but start loud popping sound like it was doing a flame out. Any idea where to start looking for the problem???
Re: Suburban Furnace in RV Wayneo 12-30-10  
I have a suburban furnace in my artic fox camper. Turn it on to prepare for a trip, worked fine, then came out later and found it had not fired, but the fan to the basement was still running. Turned it off and back on again, works ok for several cycles then over night it fails to fire and i find the basement fan still on. Took it to a dealer and $300.00 later and a new board, went to pick it up, you guessed it, same proublem. Runs for aa few cycles and then no ignition. Good gas as everything else runs fine, hot water, stove, fridge. What else could i sugest to the dealer to correct?
Wayneo
Re: Suburban Furnace in RV Mike Whittington 12-23-10  
Suburban furnace in 1988 Hi-Lo works just fine the *first* cycle after you turn it on... I get blower, igniter, flame, then presto, heat. When the temp reaches the thermostat limit, I get flame out and blower continues for another 52 seconds before complete shut down... so far, so good. The *second* cycle, I get blower then igniter, no flame, and cold air for about 30 seconds before blower shut down. This failure repeats automatically every minute or so until I switch the thermostat off, and back on again, then the *first* cycle works and the *second* cycle fails just like before. Any suggestions?
Re: Suburban Furnace in RV Chuck 1-4-11  
I have a Suburban 30F in my Winnebago, 1 year old. It smells so bad when I use it I would rather freeze. It hurts your nose to breathe the air. Any ideas?
Re: Suburban Furnace in RV jack edmonds 5-27-11  
Blower motor will not shut off, i pulled the fuse and it went off, but comes on with fuse in, or on power cord. themostat set on auto, heat off. can i reset something or do i have a bigger problem?
Re: Suburban Furnace in RV Gerald Berden 9-21-11  
I own a 1999 Bounder 36sl. I would like to find a manual that would assist me in removing the fan in a Suburban furnace.
Re: Suburban Furnace in RV nt34 sp Mary 12-1-10  
First time trying to turn on furnace, the blower came on for a few seconds and shut off[no heat]. it did this several times. several days later tried turning it on ran fine several days. that evening tried turning it on wouldn't do anything. next day tried it again fan came on and as soon as it lite it shut off and hasn't worked since.
Re: Suburban Furnace in RV debra 2-11-11  
I have a Suburban SF35. My problem is that all of a sudden my blower isn't moving fast enough to engage the sail switch. I've checked for obstructions and even took it out and put it directly to a battery and still it only goes about 25-50% speed. Is this likely a blower motor that is wore out?
Re: Suburban Furnace in RV Greg 10-29-10  
I have a old camper (1979) with a Suburban furnace. I light the pilot, and turn the thermostat up to the desired temp. The furnace will work fine, and the blower also until the
camper is up to temp. The problem I am
having, is sometime the blower does not
turn off after the the thermostat has reached the set temp, and than it will blow the pilot light out. I than turn the thermostat down, and relight the pilot light, which lights right up.
Could this be the thermostat causing the fan to stay running?
Re: Suburban Furnace in RV ken 9-8-10  
Cleaned the tube and orifice out,got gas spark and heat, but now the battery dies after a few cycles
Re: Suburban Furnace in RV David Summer 7-21-10  
My furnace comes on and heats when the switch is off. I cut off the LP and it will still blow for a short while. I can hear clicking at the fuse box and it will start to try and heat again. Any ideas why the heat is running when it is cut off.
Re: Suburban Furnace in RV David 9-9-10  
I have a 1990 NT-16SE I only c=get a click when the thermostat engages. but no blower or any sign of life.. worked fine up until a couple of weeks ago. I cleaned the burn chamber reinstalled it, but still get no blower. What should I check next?
Re: Suburban Furnace in RV Richard Matthew 10-12-10  
I have a Suburban gas heater Mo # SF 42
I turn it on and it works fine untit the MH gets to temp then the fie goes ott to cool down. After a couple of min. the blower kicks off it will come back o and run for a couple of min. it will repete this for several times. ?
Thanks Richard.
Re: Suburban Furnace in RV vaughn 9-25-11  
I have a 95 fleetwood bounder. It has a suburban heater and it sounds like a lot of people are having the same problem. The fan comes on fine then it lights it reaches temp then shuts off. Everything seems fine. It will be fine for a few cycles then before it reaches temp the flame goes out and the fan keeps blowing in cold air. It tries to relight like 3 times but doesbt. The fan will keep blowing in cold air til you turn the t stat off then back on. Does this sound like it could be the ignitor board? Please help its almost winter and in nd its going to be cold. Thank you
Re: Suburban Furnace in RV Jamie 11-19-10  
I have a Surburban furnace in my 2009 Heartland Cyclone and the motor seems loud when it runs. The heater has very little usage until just a few weeks ago when we relocated to a colder area, what would cause the motor to be loud?
Re: Suburban Furnace in RV Gary Guinotte 10-24-10  
I have a Suburban 42 F furnace in my 96 Safari motor home. Has always worked fine. On a recent trip, furnace thermostat was off. When we stopped, I noticed a buzzing sound that was very noticeable at the intake/exhaust ports on the outside of the vehicle.

This stopped when the 12 V fuse was removed.

I'd almost suspect a relay was chattering, but everything should have been off, when the wall thermostat was off, and not set to "heat".

Suggestions?
Re: Suburban Furnace in RV Keith 3-12-12  
Lots of the same problem. Where is the Answer posted. I too have this problem and have been told it is the circuit board or ignitor? Who Answers these questions and where do we see them.
Re: Suburban Furnace in RV Rick Blanchard 3-21-13  
I have a Suburban Model SF-25F Gas Furnace in my 2004 Cougar Fifth wheel. It has the Remote Comfort Control for the AC but not the furnace. The only control for the furnace is up on the ceiling under the Ac that is an "Override" which turns the furnace on or off. The temp only gets up to 66 and off at 64, with no way to adjust the temp. I could live with it if it would go up to 68 if that was possible. If not is there any way to install a wall thermostat and by pass the "Override", and if so what model of Thermostat should I purchase? I would appreciate any help you can give me, Thank You.
Re: Suburban Furnace in RV Chuck Gardner 8-7-12  
This is the third summer we have owned our Weekender 2006 camper with a suburban model DD-17DSI. We have had a problem with the heater from day one. The blower comes on for ten to fifteen seconds, no ignition and the blower goes off. This last camping trip two weeks ago same story. When the sun warmed up the camper the heater ignigted. A little to late. We have taken to a local RV dealer two days laterthey say it works fine once we got your batterys up to charge. they plug it in so the converter does the charging. It was plugged in for three weeks before we left. I have even taken the two batterys to sears and had them check them. Thanks for your help Chuck Gardner
Re: Suburban Furnace in RV Pete 10-11-12  
I have a Suburban SF-42F furnace in my rv. The blower comes on after a bit 1 spark, thenabout 15sec. 1 more spark and a third time, then done.

Thanks, Pete
Re: Suburban Furnace in RV Michael 10-7-11  
The heater runs off of propane, the warm air is dispursed with an electric fan. The chamber where the propane burns gets hot, the fan blows cool air across the chamber and via convection heats the air, in turn cools the chamber and prevents it from overheating. As a safety feature, there are sail switches to identify adequate ventilation across the heating chamber, as the battery becomes weak, the fan does not produce enough air flow to open the sail switch, and therefore shuts off the burner. It is a preventative feature to prevent overheating, damage and/or fire.
Re: Suburban Furnace in RV Peter Looy 12-6-12  
I have an SF 42 Suburban furnace in my 2009 Gulfstream when we turned it on a week ago it worked fine for the first cycle it brought temp up to what we had it set on but would not relight when temp came down. Now it won't do anything only thing you can hear a clicking noise but it won't fire. Can you help any advice you can give me will be appreciated.
Thanks Pete
Re: Suburban Furnace in RV frank 2-22-12  
Jamie; I had the same problem.When I took the unit out I found a field mouse in the blower fan. After removing the mouse I use some chicken wire to cover the openings in the houseing. DONOT COVER THE EXHAUST OR INTAKE HOLES
Re: Suburban Furnace in RV Jack 2-25-12  
I have a Suburban NT30 in my 5th wheel. When I set the thermostat the fan run for maybe 10 seconds then shut off and the furnace won't come on. The furnace is under the fridge so it's low on the floor I can't see if the pilot is on

Jack
Re: Suburban Furnace in RV Tony Van Luyk 1-13-12  
I have just purchased a 2001 Allegro Bus with 2 Suburban furnaces, one is a NT205 and the other a SF35. Did not receive an operator's manual with it. Can't get everything to work in the 2 zones. Any idea where I can get an owner's manual. Hope you can help
Re: Suburban Furnace in RV Mike Gantos 10-22-11  
We have a 1998 minnie winnie, and when we run the heater the fan kicks on and the unit works; however, after a minute the heater makes a loud whirring high pitch squeal for 10-20 seconds then stops for 10-20 seconds and starts again.

Can anyone help diagnose and provide repair procedures as this is extremely annoying and makes for difficult sleeping at night.

Thank you in advance for your assistance.

Mike
Re: Suburban Furnace in RV Gene 11-19-11  
You know that the Suburban furnace is JUNK!!! Don't buy a new furnace and water heater like I did and still have the same problems crop up. I think we should all get together and start a class action suit against the company. Chinese parts in the fan motors and assembled in Mexico. Those Fenwall boards are total junk. I could write a book on the problems I have had with the Suburban furnaces and water heaters. My Tahoe is a late model and this stuff is made so poorly that it is criminal!!
Re: Suburban Furnace in RV Judi czerwonka 11-8-11  
We have a Surburban furnace model SF-30F. At beginning of winter season using remote set to furnace turned on furnace. Furnace came on and ran a few seconds, made a real LOUD popping sound and shut off. We discovered we had failed to uncover the exhaust vent outside which we had covered with tape last spring. Problem is furnace will come and go off, BUT the blower makes so much noise we cannot stand to be inside the RV. My question is can the blower be replaced? The RV is permantley parked and cannot be towed for service. If there is a parts manual and replacement instructions is this something we could do? Or even a HVAC person maybe? Please respond ASAP. Thanks
Re: Suburban Furnace in RV Gary 12-6-11  
The furnace is warm blowing air from the large return air grill. Usually warm air is delivered through the floor vents. What caused this to change air flow directions? THANKS !
Re: Suburban Furnace in RV Bryanf 1-13-12  
Removed furnace entirely from enclosure
Removed shroud from furnace. Turned the squirrel cage blower by hand slowly, using a long skinny screw driver to dislodge all the muddobber nests. Could not remove the squirrel cage, so it took
several hours of removing junk before the squirrel cage would turn freely.
For $20.00, I bought a pair of stainless
steel vent screens at Randy's Trailer
Sales in Collinsville, Il.on Il 157 at
Interstate 55-70. The kit comes with a
slotted tool to hook the springs to the
vent cross bars. Do it at night with a
flashlight.
Re: Suburban Furnace in RV Gary 12-7-11  
Suburban 30f Blower comes on ignition went outside to the exhaust could smell gas when the igniter kicked in but does not lite furnace. Have taken it out and bench tested by two different companies no problems lights immediately. 13.65 volts to furnace, good ground red power yellow ground. absolutely baffled.
Re: Suburban Furnace in RV Melissa 5-23-10  
I am having the same problem as Gordon.
The Suburban NT Series furnace lights up normally and heats for about 5-7 minutes then the heat starts going away until cold, but the blower continues and doesn't shut down until i turn it off.

What is the solution?
Re: Suburban Furnace in RV darlene 10-9-11  
Need wiring information to hook up furnace sf42 never wrote the colors when we took the furnace out can't find my manual thank you
Re: Suburban Furnace in RV Craig Nelson 11-7-11  
I have a suburban model sf-42f, the furnace lights up normally and heats for about 5-7 minutes then the heat starts going away until cold, but the blower continues and doesn't shut down until i turn it off. i replaced the limit switch and bypassed the sail switch no differance. please help, not much hair left on my head. thanks
Re: Suburban Furnace in RV Craig C 12-20-10  
My Suburban sf25 runs for 5 min and the flame goes out. Tank is full and all voltages are good. it restarts if I turn it off and restart it. I cleaned out mud dobbers(wasps) could I have more I can't see or am I going down the wrong path? Please help. Thanks, Craig
Re: Suburban Furnace in RV d long 12-9-11  
Suburban rv furnece nt 34. fan comes on but it will not ignite. no spark seen in sight glass.
Re: Suburban Furnace in RV Jim 12-28-11  
I am attempting to live in my camper through a Wiconsin winter. Main problem I have is with my Suburban NT17 furnace. The pilot lights and when the thermostat is set it fires up and works great. When set temp is reached the burner shuts off, pilot stays lit untill temp falls and furnace trys to fire up but pilot blows goes out. It is then difficult to light the pilot for a few minutes. After pilot is lit the furnace works great for the first "cycle". I have heard that the funace is quite old and parts are hard to find. I'm getting desprat and cold any info will be greatly appreciated.
Re: Suburban Furnace in RV sean glaser 7-9-11  
Hello,
My Suburban furnace will not ignite even though I have a spark and I smell LP. One thing I did notice is that it only sparks once per cycle. I can hear the water heater spark many times in rapid succession when it fires up. Thanks for your help.
Re: Suburban Furnace in RV bradvigen 12-22-12  
I am having problems getting my rv heater to ignite. any ideas?
Re: Suburban Furnace in RV Greg Devenny 6-4-10  
I am having the same problem with my furnace that you had about a year ago.What did you find to be the problem?I have the same furnace as you did at the time.
Re: Suburban Furnace in RV jim degg 10-6-09  
I have a 1994 shasta travel trailer with a suburban furnace, looking for a owners manual. only #'s I can find are 191103 & 866151 are these #'s any good or what & were should I look? thankful for any info thanks!
Re: Suburban Furnace in RV joe 3-1-10  
Sp34 backfires when first started?
Re: Suburban Furnace in RV arseno 5-20-13  
I have a 07 sierra 35 foot camper with suburban propane furnace lites three times and goes out wont stay lit, what do I do?
Re: Suburban Furnace in RV Ronald Parrish 12-18-09  
I have a Suburban SF-35 furnace in our 2008 5th wheel we are out of warranty and here is the problem. First cold snap we turned on the furnace it ran for about 5 to 6 cycles and then would not ignite. I pulled the furnace out took it to a RV tech he bench tested the furnace said everything was fine. I reinstalled the furnace again it ran for 5 or 6 cycles then failed to ignite again. I took the entire coach to the same RV tech it would not ignite for him so he checked the gas pressure, voltage, cleaned and checked the igniter and cleaned the burn chamber. The furnace seemed to work fine got back to campground it work for 6 cycles then again stopped igniting. A mobile RV tech came by ran some test and said the circuit board was bad so we replace it, same situation ran for a few cycles then stopped igniting. I have replaced the thermostat,the circuit board, gas regulator at the bottles, we have blown out the gas lines with a compressor and still no success to fix the problem. One person has suggested it is the gas valve on the furnace, but I would like to know how to check that before spending $135 for the part. I have spent almost $300 and nothing has changed, I am about ready to just purchase a new furnace and be done with it. Hope you can help me.

Thanks,

Ron
Re: Suburban Furnace in RV Roger 11-23-10  
My blower will not turn on so no heatis it the limit switch.
Re: Suburban Furnace in RV Barbara Wright 1-14-12  
The Furnaces is not working in are motorhome. It clicks but no heat is coming out. What should we look at.
Re: Suburban Furnace in RV Brian 10-31-11  
When we flip the thermostat to heat, nothing happens. No blower or anything. Did you have any helpful information?
Re: Suburban Furnace in RV Bill Guise 1-3-11  
Have Suburban NT30M on the bench for troubleshooting. It starts, runs for about 60 seconds, goes out then relights automatically, continues for a while and repeats the routine. After about 2 minutes I hear a puff once or twice, then I turn it off and again troubleshoot. Any ideas would be appreciated. Kent, WA
Suburban Furnace in RV Ron 1-20-12  
My heater would turn on and shut off as it reaches the set Temp. on the thermostat but wouldnt turn back on when the Temp drops. I have to turn thermostat up hihger to get the heater to run again, but it doesnt come on at set temp.
Re: Suburban Furnace in RV Zach 2-13-11  
Hi Tony -

I am having the exact same problem.

Did you figure out what was causing it?

Would you please share your experience with me?

Many Thanks!
Re: Suburban Furnace in RV Gerry kraz 7-12-11  
I have SF 42 suburban furnace in 2000 Monaco coach. the furnace runs fine for first heat cycle(2-3 minutes) and then will not ignite producing heat to continue cycle. Blower runs constantly with cold air until shut off manually with thermostat. At no point does coach reach correct temp. This problem originally was only sporadic but is always a problem at this time.
Can you help with problem?
Re: Suburban Furnace in RV GARY MIDDLESTEAD 1-10-13  
I have the same problem with my furnace
in my monaco coach. What was the solution to the problem? thankyou
Re: Suburban Furnace in RV NT30-sp David 10-17-11  
Turn tstat to on with temp set to about 80. no ignition or fan. Is there only one power lead to the furnace and if so, how much voltage does it take to activate igniter? Coach battery is fully charged.
Required fields in red
For more info about a field, place your mouse over the More Info icon.
Subject:
Your Name:
Your Email:
Message:



Code is case-sensitive. Helps stop SPAM.
       





Useful Links
Recent RV mechanic and troubleshooting topics
  Furnace
  Slide
  82 winibago 26R circuit breaker and battery terminal schematics HELP
  460 ford v belt routing
  Copper pipe to water heater
  Prowler,electrical
  Fuel Tank specs for 1979 Class C motorhome
  1985 Cruise Air 2 Georgie Boy wiring
  Slide motor location
  Power Jacks
  1969 catalina popup tent trailer
  Norcold 1200 series
  I'll take over your toy hauler payments
  1998 Itasca Spirit Fuse Box Diagram
  Need new fuel pump for generac np-52g model 09205-1
  VIEW ALL

RV-Coach Online

Food Recipes & Blog

Homeschool Curriculum

Free Auto Insurance Quotes

Orange Beach/ Gulf Shores, AL Fishing




Print-friendly page
PRIVACY POLICY|TERMS & CONDITIONS| 1996 - 2014 RV-Coach Network - All Rights Reserved|Web Site by ITtelligent