What to Do When a Gas Furnace Won’t Light

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Question


Hi, we have a 2016 Forest River Rockwood Signature Ultra Lite fifth wheel, and I cannot for the life of me get the pilot light to relight. It’s a Suburban gas furnace. We live in South Carolina and the nearest dealer is 55 miles away. Help!

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Answer


Hi there, thanks for the question. This model does not actually have a “pilot light,” but rather a direct spark ignition (DSI) that ignites the flame. When the temperature get down to the specified low, the gas valve opens and LP or liquid propane flows through an orifice to the burner assembly. The spark igniter sends a spark to ignite the flame similar to a manual spark or Piezo in a residential gas grill.

If your furnace is not starting, you will need to look at the following items:

    1. House battery power. The furnace needs at least 10.5 volts DC and sometimes more to open the valve. This must be checked at the module board with a multimeter.
    2. Blown fuse. There is a 12-volt fuse in the distribution center and sometimes an inline fuse in the module board on the furnace. Verify they are in working order.
    3. Correct LP pressure. Do the stove top and other LP appliances work correctly?

Here are some other questions and troubleshooting ideas:

    • Does the blower run, but the furnace does not light? If so, this is usually a low 12-volt issue as the blower will run under 10.5 volts
    • Do you hear the spark igniter trying to light? If you hear a clicking sound, the igniter is working but there is no gas or it has a cracked ceramic housing and is carbon cracking which means the spark is not “jumping” to the burner tube, rather following the crack to ground.
    • Another issue could be the thermostat. You can jump the wires to bypass the thermostat to see if it starts.

A lot of things to try here. Let us know if any of this works or if you have any more questions. Good luck!

Safe travels,
David Solberg


Related:
Understanding the Fuse Panel of an RV Distribution Panel
RV Battery Maintenance: Checking Battery Charge
How an RV Propane Tank Pressure Regulator Works

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86 Responses to “What to Do When a Gas Furnace Won’t Light”
  1. chris

    In South Carolina he will also need to look for mud dauber nest on igniter!

    Reply
    • billy

      RV Make: forest river, RV Model: fr3, RV Year: 2016, Brand: suburban

      the problem is when the blower works and the heater doesn’t ignite it is the board inside heater it will have to be pulled out and replaced it is inside your heater unit chances are if you were at a camp site and you didn’t have a device to control spikes it zapped your igniter board

      Reply
  2. Doug cornia

    RV Make: Coachman, RV Model: 260 RS leprechaun, RV Year: 260 RS leprechaun2016, Brand: Oman, Model Number: 4000

    How can you tell your generator runs on gas or propane?

    Reply
    • Customer Service

      Hi, Doug. Typically the generator model number will have an LP designation in it, or the data plate will list a fuel source. The owner’s manual should also state the fuel source. Otherwise it’s a matter of tracing the fuel line coming into the carburetor back to the source. Since you did not provide a make or model of the RV or generator I assume it’s a motorhome as a trailer would not have a gasoline tank and therefore no means to provide gasoline? Most gasoline motorhomes have a gasoline powered generator as LP is precious and runs out fast. Some diesel powered RVs use propane as they do not like noise and smell. An easy way you can tell is turn off the LP at the tank and see if the generator will start and run for a few minutes.

      Reply
      • John Chase

        RV Make: Coachman, RV Model: Leprechaun 260, RV Year: 2017

        The Leprechaun 260 has a 4000 kw gas Onan generator.

        Reply
  3. Jim

    RV Make: Rexhall, RV Model: Vision, RV Year: 1997, Brand: Suburban, Model Number: GAS DSI

    Ck my sent emai

    Reply
  4. Helen

    RV Make: Itasca, RV Model: Class C, RV Year: 2001, Brand: Winnebagi

    Watched video on fuses and I guess something blew up, because it turned black. Like what I saw it was too bad something went wrong.

    Reply
  5. Gary

    RV Make: montana, RV Model: big sky, RV Year: 2010

    do you have a video or class for furnace repair

    Reply
  6. william

    RV Make: chevy coachman, RV Model: RQ21, RV Year: 2008

    can I replace the hard wired CO2 detector with a battery operated unit? the hard wired unit is on the wall in the bedroom and in the way. I would like to move it about 12 inches higher and 24 inches to the left

    Reply
    • Customer Service

      Hello William,

      Yes, I would recommend the brand Safe T Alert as they make one specifically for the RV industry and has all the correct approvals for UL, NEMA, and other listing as well as temperature range. Make sure you change the battery each year!

      David
      CCRC Video Membership

      Reply
  7. Kenny

    RV Make: Jayco, RV Year: 2016, Brand: Atwood

    The atwood hot water heater burner will ignite when you flip the switch to on position and water gets hot. After that the burner will not ignite any more on its own until you flip the switch again.

    Reply
  8. Joseph Alleman

    RV Make: Keystone Sprinter, RV Model: KBS300, RV Year: 2010, Brand: Keystone Sprinter, Model Number: KBS300

    What is the amperage draw for the hydraulic pump for the slide outs?

    Reply
    • Customer Service

      Hello Joseph,

      To provide more specific information on the amp draw of your hydraulic pump we need the make, model, and year of your RV as well as the slide mechanism manufacturer and what slide.

      Thanks,
      David RVRC Video Membership

      Reply
  9. Rae and mandy

    RV Make: Rexhall, RV Model: Airex , RV Year: 1991

    I can’t get my hot water heater to light the model number and brand is faded I can’t see it. It lit for like a min when I first bought it hi now it won’t light help please

    Reply
    • Customer Service

      Hello Rae and Mandy,

      First you need t verify that you have 12-volt power to the unit. Use a multimeter and check the incoming voltage. If it is less than 11 volts it will not light. While you are there, check the fuse on the module board as well. Does the unit try to light, meaning you hear a clicking or spark? If it does, then you may have a dirty spark ignitor not allowing the spark to get to the burner assembly and fuel/air mixture, or a cracked spark ignitor that has the spark traveling down the crack not to the burner assembly, which is called carbon tracking. Also verify you have proper LP pressure by testing the stove top or other LP appliance. Otherwise it’s probably a bad module board.

      We’d love to have you be a part of our community. We are convinced you will enjoy the benefits of becoming a member and having access to the best instructional how to videos and professional tips. We would like to offer you a special promotion for your first year membership.
      http://go.rvrepairclub.com/C9603

      Thanks,
      David
      RVRC Video Membership

      Reply
  10. JOHN CHAVEZ

    RV Make: Heartland, RV Model: Landmark, RV Year: 2014

    I recently had my 80 amp converter die while traveling to AK. The RV repair shop only had a 65 amp converter & it would’ve taken 2 days to receive a 80 amp. I opted for the 65 amp. So far (3mos) I’ve had no electrical issues. Is this ok?? My wife & I do not dry camp, where upon we would be using battery power..

    Reply
    • Customer Service

      Hello John,

      You should be OK, the 80 amp converter just has more charging power for larger battery banks and will charge faster.

      Thanks,
      David RVRC Video Membership

      We’d love to have you be a part of our community. We are convinced you will enjoy the benefits of becoming a member and having access to the best instructional how to videos and professional tips. We would like to offer you a special promotion for your first year membership.
      http://go.rvrepairclub.com/C9652

      Reply
  11. Peggy

    RV Make: Rexhall, RV Model: Roseaire, RV Year: 2000, Brand: Suburban , Model Number: NT34SP

    The furnace won’t turn on. Where do I find the 12 volt fuses? I’ve checked the thermostat and if I attach the red and white wires it doesn’t turn on.

    Reply
    • Customer Service

      Hello Peggy,

      The fuse for the furnace is in the distribution center with the other 12-volt DC fuses. Most furnaces do not have an onboard fuse in the module board. Check the fuse at the distribution center and if you have 12-volt power coming out, check the plug at the furnace itself. You should have 12-volt power at the red wire and also the blue wire which typically goes to the thermostat. If you have power there, then it’s a matter of pulling the unit out and checking the sail switch or the limit switch.

      Thanks,
      David RVRC Video Membership

      We’d love to have you be a part of our community. We are convinced you will enjoy the benefits of becoming a member and having access to the best instructional how to videos and professional tips. We would like to offer you a special promotion for your first year membership.
      http://go.rvrepairclub.com/C10013

      Reply
  12. Dan

    RV Make: prowler , RV Model: 28', RV Year: 1978

    the fan will not run unless I shack the whole unit. I do not think it is the heater that came in it. it ran good until on day it just stop, I shuck the heater and the fan would start but would quit as soon as I quit shaking it. I am thinking it is a ground problem.

    Reply
  13. David Kirkpatrick

    RV Make: Jayco, RV Model: Designer 36RLTS, RV Year: 2007, Brand: Atwood, Model Number: 8940-III

    My furnace is set at 60 the ambient (outside) is about 35. The blower comes on as usual and a few seconds later the flame ignites. After it has run a bit it starts a cycle. Blower stays on, flame ignites for about five seconds, then goes off. Blower continues. Flame reignites and goes off after about five seconds. Flame is off for about 8 seconds between ignitions.

    Reply
  14. Bud

    RV Make: Winnebago, RV Model: Minnie Winnie, RV Year: 2005, Brand: Atwood, Model Number: G6A-8E

    Heater ignites but is intermittent/ popping, however continues to burn.

    Reply
  15. Saralyn C. Fowler

    RV Make: Jayco, RV Model: Pinnical, RV Year: 2015

    Furnace stopped working in night. Appears one LP tank is empty but the other has gas in it. Stove still lights. Help! We are presently on a camp site!

    Reply
    • Customer Service

      Hello Saralyn,

      Sorry for the delay in the response, hope you got through the night and found an alternative. If your furnace is still not working, check these items:
      House batteries must be at 10.5 volts or higher. If not, the gas valve and spark ignitor will not work but the blower will.
      Do you hear the furnace trying to light? If yes, you could have a bad module board that is not opening the gas valve, or cracked spark ignitor which keeps the spark from getting to the burner
      Try a new thermostat.

      Thanks,
      David RVRC Video Membership

      We’d love to have you be a part of our community. We are convinced you will enjoy the benefits of becoming a member and having access to the best instructional how to videos and professional tips. We would like to offer you a special promotion for your first year membership.
      http://go.rvrepairclub.com/C10561

      Reply
  16. Becky Lake

    RV Make: Forest river, RV Model: Salem hemisphere, RV Year: 2017

    Our furnace will try to kick on. I hear it try to light. The blower will go for a min or so then shut off. This happens in the colder mornings but works fine latwr in the day when jt is warmer

    Reply
    • Customer Service

      Hello Becky,

      To provide more specific troubleshooting information we need the make, model, and year of your furnace. Typically the furnaces (Suburban and Atwood) work like this:
      Thermostat calls for heat and creates a closed circuit which provides low voltage to the module board. Module board starts the fan up and runs for a few seconds which pushes the sail switch up at the end of the heat chamber telling the module board there is sufficient airflow. The module board opens the gas valve and sends power to the spark ignitor. The clicking sound you hear is the spark trying to light the gas/air mixture in the burner tube. Once the flame is started, the flame sensor above the spark ignitor needs to be touching the flame for the continuity to pass and tell the module board there is a flame. Otherwise it stays open for only a short time and shuts down thinking there is no flame so it should shut off the gas valve. It could be the flame sensor is not aligned with the flame above the spark assembly, or the burner tube is dirty and not allowing enough LP through which would create a smaller flame. Typically this would not just happen in cold temperatures though? I would say you have a weak flame sensor or bad wire that “shrinks” when the temperature is cold which could be a connection or the sensor itself. It could also be a solder joint in the module board in a circuit controlling the flame sensor? These shrink in cold temps and the crack creates an open circuit not allowing power through. When the temps warm up, the solder expands and makes the connection?

      Thanks,
      David RVRC Video Membership

      We’d love to have you be a part of our community. We are convinced you will enjoy the benefits of becoming a member and having access to the best instructional how to videos and professional tips. We would like to offer you a special promotion for your first year membership.
      http://go.rvrepairclub.com/C10696

      Reply
  17. Mason Hecket

    RV Make: Forest river, RV Model: Cougar F29, RV Year: 2007

    Went camping in our 5th wheel and heater worked that night. When we woke up next morning the heater wouldn’t turn on. I could hear it trying to ignite but no heat

    Reply
    • Customer Service

      Hello Mason,

      First, check the voltage of the house battery. It needs to have at least 10.5-volts and some models need 11-volts. If it is trying to start by clicking, clean out the burner assembly as you might have soot or other object blocking the flow of LP. Next, check your stove top to make sure your LP system is working and the flame is a steady light blue and not jumping around. If you can take a look at the spark assembly, see where the spark is going. If the ceramic insulator is cracked, the spark will travel down the crack and not get to the flow of LP.

      Thanks,
      David RVRC Video Membership

      We’d love to have you be a part of our community. We are convinced you will enjoy the benefits of becoming a member and having access to the best instructional how to videos and professional tips. We would like to offer you a special promotion for your first year membership.
      http://go.rvrepairclub.com/C10561

      Reply
  18. Diana Wolfe

    RV Make: Forest River, RV Model: George Town, RV Year: 2016

    Propane is on – the blowers inside the motor home blow but there is no heat and you cannot hear the ignitor sparking or clicking.

    Reply
  19. Michael goemans

    RV Make: Cardinal, RV Model: Forrest river, RV Year: 2008, Brand: Suburban heater , Model Number: Sf42f

    My heater will turn on fan runs the unit will blows hot air for a couple of minutes the it starts to make a good poof sound and then the air will start to cool off could this be the ignitor going bad

    Reply
    • Customer Service

      Hello Michael,

      To provide more specific troubleshooting information we need the make, model, and year of your RV and the furnace make and model. It’s probably either a Dometic/Atwood or Suburban and if the unit starts the blower fan and ignites for a short time, it would not be the ignitor? More likely it would be a thermocoupler which is the probe or sensor directly above the igintor and flame which senses there is actually a flame that started and is burning. Typically there is a current running through the ignitor, through the flame, and then to the thermocoupler. If the flame is not touching the thermocoupler, it creates an open circuit which tells the module board that there is no flame and to shut down. This could be caused be a flame that is to low or to high which could be adjusted by closing the flow tube slightly which is the tube going to the burner assembly with a hole that allows air to mix with the gas. This tube slides back and forth to make the opening larger or smaller which allows more or less air into the mix. Try loosening the set screw and sliding the tube closed a little to see if that helps? You want to see a nice blue flame that does not dance around and goes up to the thermocoupler.

      Thanks,
      David RVRC Video Membership

      We’d love to have you be a part of our community. We are convinced you will enjoy the benefits of becoming a member and having access to the best instructional how to videos and professional tips. We would like to offer you a special promotion for your first-year membership.
      http://go.rvrepairclub.com/C10742

      Reply
  20. Rodney Strand

    RV Make: Tiffin , RV Model: Allegro open road 32Sa , RV Year: 2015

    Heater doesn’t heat when below 32 degrees

    Reply
  21. James Chorba

    RV Make: Sierra, RV Model: Cobra, RV Year: 1993, Brand: Suburban

    Furnace won’t light blower runs need help

    Reply
    • Customer Service

      Hi James, please provide the make, model and year of your RV so we can assist you. Thank you, Hallie RVRC Video Membership

      Reply
  22. John

    RV Make: Monoco, RV Model: Cayman XL, RV Year: 20089

    I ran out of propane. After filling up, the furnace is making a spitting noise and want ignite. The stovetop repute and working. The fuses are good. I don’t know what else to do. Thanks

    Reply
    • Customer Service

      Hello John,

      To provide more specific troubleshooting information we need the make, model, and year of your rig as well as the type of furnace. Depending on the year it could be a Suburban, Atwood/Dometic, or HydroFlame which all have a similar sequence for starting. When you run out of propane, all the lines get filled with air and it takes longer for some appliances to purge that air than others. Typically the stove top will purge faster as it’s a simple on and light sequence where the furnace and the refrigerator have a few precautionary steps in the sequence before it attempts to light. Here is how the sequence goes for lighting:
      The thermostat calls for heat when the temperature drops below the setting and a circuit is closed sending the request to the module board. The module board then starts the blower motor which pushes air into the burner chamber. This lifts a sail switch at the front of the chamber, once this sail switch gets to a certain height, it also creates a closed circuit which tells the module board there is sufficient air flow to light and the gas valve is opened and the spark ignitor lights the burner assembly. Hot air is then blown through the burner chamber to the vents inside passing over a high limit switch at the end of the burner chamber. If a vent inside the rig is closed or blocked with a rug and the air is restricted, the burner chamber gets to hot and the limit switch shuts the unit down.
      So, when you run out of propane, the furnace has to go through all these stages before attempting to light. Not sure what the “spitting” sound is, could it actually be the spark ignitor trying to light? Unlike the stove top, the gas valve does not just open and allow LP to flow, so the fan could start and tell the module to open the gas valve and try to light, but if it’s purging air, it will only attempt this a few times before shutting down? I would suggest trying the procedure several times without any other LP appliance running to see if it will eventually light. If not, try to identify where the “spitting” sound is coming from and we can dig into it further.

      Thanks,
      David RVRC Video Membership

      We’d love to have you be a part of our community. We are convinced you will enjoy the benefits of becoming a member and having access to the best instructional how to videos and professional tips. We would like to offer you a special promotion for your first-year membership.
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      Reply
  23. Tim

    RV Make: Keystone, RV Model: Sprinter, RV Year: 2013

    My Sprinter has been stored outside without cover since new. I believe the seals/gaskets on the two slide outs are deteriorated and in need of replacement. Can you tell me if the replacement seals are glue in type or are they held in place in some other method. Also if my assumption is correct should I replace the inner gasket at the same time as the outer set. Thanks for your help.

    Reply
    • Customer Service

      Hello Tim,

      To provide more specific information on the slide room seals of your RV we need the make, model, and year. Some manufacturers such as Winnebago have a double sided bulb seal around the perimeter that slides on to the metal flange of the sidewall similar to the seals used for the compartments. Others are applied with a sticky tape already applied to the seal.

      Thanks,
      David RVRC Video Membership

      Reply
  24. Richard

    I had the same problem that drove me nuts. The LP pressure regulator was the problem. Everything may look like it’s working fine. However, if you don’t have the minimum pressure required for the furnace, it will not work. My stove etc. worked fine which made me think the regulator wasn’t the issue but it was. Try replacing the regulator. It’s easy and I’ll bet it will fix your problem.

    Reply
  25. Stephanie Peacock

    RV Make: Dutchman Coleman light, RV Model: 3015bh, RV Year: 2016

    Rv blower kicks on, furnace lights, but turns off after 5-10 seconds. It does this three times then turns off. Help!

    Reply
    • Customer Service

      To troubleshoot the furnace you need to understand the sequence of operation and determine which action is not happening. The thermostat calls for heat when the temperature drops below the setting and a circuit is closed sending the request to the module board. The module board then starts the blower motor which pushes air into the burner chamber. This lifts a sail switch at the front of the chamber, once this sail switch gets to a certain height, it also creates a closed circuit which tells the module board there is sufficient air flow to light and the gas valve is opened and the spark ignitor lights the burner assembly. Hot air is then blown through the burner chamber to the vents inside passing over a high limit switch at the end of the burner chamber. If a vent inside the rig is closed or blocked with a rug and the air is restricted, the burner chamber gets to hot and the limit switch shuts the unit down.

      So it it lights for a few seconds and turns off, the high limit switch in the back of the burner chamber is getting hot due to a plugged or covered vent inside the rig, or a bad switch.

      Thanks,
      David RVRC Video Membership

      We’d love to have you be a part of our community. We are convinced you will enjoy the benefits of becoming a member and having access to the best instructional how to videos and professional tips. We would like to offer you a special promotion for your first year membership.
      https://go.rvrepairclub.com/C11081

      Reply
  26. MIKE

    RV Make: trailite, RV Model: trailcruiser, RV Year: 2008, Brand: TRAILITE

    SHOULD THE BLOWER MOTOR FOR THE FURNACE TURN FREELY WHEN NOT ON? MY HEATER WILL NOT COME ON AND THE BLOWER MOTOR WILL NOT TURN. HAD DIRT DOBBERS THAT MADE A NEST IN THERE

    Reply
    • Customer Service

      Hello Mike,

      The blower fan and shaft to the motor should turn freely when not in use. If it does not turn or grinds heavily, something has gotten inside and jammed it.

      Thanks,
      David RVRC Video Membership

      We’d love to have you be a part of our community. We are convinced you will enjoy the benefits of becoming a member and having access to the best instructional how to videos and professional tips. We would like to offer you a special promotion for your first year membership.
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      Reply
  27. Christopher Vantassel

    RV Make: Salem, RV Model: 27 dbud, RV Year: 2014

    Furnace won’t light an don’t hear ignition

    Reply
  28. Teddy

    RV Make: Georgie Boy, RV Model: Swinger, RV Year: 1996

    My coach has 2 furnaces and the rear one works just fine but the front one refuses to light but the blower runs..I have over 12 VDC,,I can not hear the striker trying to light the gas but it could be,,I am waiting for the weather to break a little here to get a better look,,any suggestions??

    Reply
    • Customer Service

      Hello Teddy,

      To troubleshoot the furnace you need to understand the sequence of operation and determine which action is not happening. The thermostat calls for heat when the temperature drops below the setting and a circuit is closed sending the request to the module board. The module board then starts the blower motor which pushes air into the burner chamber. This lifts a sail switch at the front of the chamber, once this sail switch gets to a certain height, it also creates a closed circuit which tells the module board there is sufficient air flow to light and the gas valve is opened and the spark ignitor lights the burner assembly. Hot air is then blown through the burner chamber to the vents inside passing over a high limit switch at the end of the burner chamber. If a vent inside the rig is closed or blocked with a rug and the air is restricted, the burner chamber gets to hot and the limit switch shuts the unit down.

      So if the blower fan does start, but the unit does not light, then you either have low voltage to the fan which will make it run, but not fast enough to raise the sail switch or you have a bad sail switch. You can pull the outside furnace cover off and try the sequence again to actually verify if you hear a click and an attempt to light? From the inside you probably would not hear any spark or attempt to light or even if it did ignite? Verify the actual sequence and what is happening and what is not happening.

      Thanks,
      David RVRC Video Membership

      Reply
  29. Kenneth

    RV Make: Winnebago, RV Model: Adventure, RV Year: 1999, Brand: Door locks, Model Number: Keys and remote

    How do you get in when door won’t open?

    Reply
    • Kenneth

      RV Make: Winnebago, RV Model: Adventure, RV Year: 1999, Brand: Door, Model Number: Keys and remote lock

      How do get the door open when it’s stuck

      Reply
  30. Katherine

    RV Make: Concord, RV Model: Coachman, RV Year: 2018, Brand: Atwood, Model Number: AFMD

    Our propane furnace will not ignite, fan runs but no click for flame. Propane tank full, hot water and stove work. Checked out flow and fuses, all ok!

    Reply
  31. Donna

    RV Make: Mountaineer, RV Model: Montana, RV Year: 2005

    Furance won’t lite it clicks was working fine went and filled propane tanks then came back and and hooked them up then the furance wouldn’t lite

    Reply
  32. Annette

    RV Make: Rambler, RV Model: Holiday, RV Year: 1978, Brand: Suburban, Model Number: ?

    Help, it blows but won’t heat. Changed the thermostat and fuse is good . did other things too but nothing is working and its very cold.. Help me

    Reply
  33. Amber Ross-Morgan

    RV Make: Jayco, RV Model: Eagle, RV Year: 1999

    Furnace blower comes on tried to ignite three times but won’t stay then just blows cold air.

    Reply
  34. greg

    Brand: duo-therm, Model Number: 66100

    have troubleshooted furnace to either sail switch or motor, can’t find info on motor speed. also haven’t been able to find parts supply. any help would be apprectated. thanks

    Reply
  35. David

    RV Make: forest river, RV Model: wildcat, RV Year: 2003

    Took dometic refrigerator out to replace with a electric refrigerator only, now the furnace will not work. The blower works, but will not start. What could the problem be? Thank you

    Reply
  36. Joe Haynes

    RV Make: 2005 Jayco Greyhawk, RV Model: Jayco Greyhawk, RV Year: 2005

    I have a 2005 Jayco Greyhawk and had an unfortunate tire blowout this weekend. When the tire blew, it destroyed the storage compartment and ripped off the “ quick coupler” for the BBQ grill (which I have never used). Is there a shutoff for that LP line other than the main LP tank?

    Reply
  37. Stacey Little

    RV Make: Keystone, RV Model: Sprinter, RV Year: 2011, Brand: Suburban

    I have a suburban furnace that won’t light. Can hear the sparker and fan going but will not light. If I go out site and put my hand over the exhaust the furnace will light and run. Took it to the dealer who hooked it up to a bottle on the bench and it worked fine but back installed the same issue. Is it a pressure issue?

    Reply
  38. N Smith

    RV Make: Fleetwood, RV Model: 39d, RV Year: 2002, Brand: Wildrness

    My furnace is not igniting. Getting propane, blower fan working and igniter clicking but won’t light. Help!!!

    Reply
  39. Brian Rodriquez

    RV Make: 13365, RV Model: Freedom, RV Year: 1996, Brand: Rockwood, Model Number: 13365

    Fixing furnance

    Reply
  40. Lynne

    RV Make: Rockwood, RV Model: ultra lite m-2501s, RV Year: 2007, Brand: suburban

    the pilot lite in the oven won’t stay lite. When I release the knob it goes out,as long as I am holding the oven knob in it is on

    Reply
  41. Mary Ann Smith

    RV Make: Rockwood, RV Model: 350 econoline, RV Year: 1989

    How do we find where to check the transmission fluid and where to add transmission fluic

    Reply
  42. jkkenn3

    RV Make: Jayco Eagle, RV Model: 27' Eagle, RV Year: 1999, Brand: Coleman, Model Number: 8333-8715

    Hello, my roof top A/C unit was working well, then I had shut it off because we were going to be gone for a few hours. Came back went to turn it back on and all I got was a humming sound. Left it off until getting home and I went up top to remove A/C cover. Checked freedom of fan motor. It spins very easy. I need to mention that while at the camp site the RV was plugged into a 30amp receptacle. Also the filter in the RV is clean. Because I am not skilled in RV A/C units, I need to know where to go from here. Thanks for the assistance.

    Kelly

    Reply
    • Customer Service

      Hello,

      The first thing you need to check is 120-volt power and amps going to the compressor motor. If you have low voltage from the campground, or have to much drawing power from your rig, the compressor motor does not have enough amperage for start up and will hum. This can also be a plugged filter which you state you checked, but also a plugged evaporator coil which you would need to take off the plastic shroud and remove the metal evaporator shield.

      Hope this helps,

      David
      RV Repair Club Video Membership

      Reply
  43. Tom Joseph Rahmer

    RV Make: Coachmen, RV Model: 27 QB ckass C, RV Year: 2017

    Qe are contemplatind adding a tow device tp pull a small non=AWD vehicle

    Reply
  44. Naython

    RV Make: Vanguard, RV Model: Security, RV Year: 1976, Brand: Suburban, Model Number: Nt12mec

    Pilot won’t light in my gas furnace, I’ve replaced the thermocouple the fan works great, I just had it running 5 days ago and now nothing,

    Reply
  45. Bradley Moore

    RV Make: Keystone, RV Model: Passport, RV Year: 2007, Brand: Keystone, Model Number: 28bh

    Can hear fan motor come on then gas valve. Can hear it trying to light but after third try it shuts down

    Reply
  46. Jess

    RV Make: Raptor, RV Model: Toyhauler, RV Year: 2007

    Furnace not working !! I turn the thermostat up and I can hear it click at the furnace but that is all it will do . The blower won’t come on or nothing

    Reply
  47. Denise Wallace

    RV Make: Road Ranger, RV Year: 1884

    I specifically don’t know what to do about my floor furnace and the voltage works but it will not ignite Flame

    Reply
  48. pat tahdooahnippah

    RV Make: skyline, RV Model: 5wheel 2955, RV Year: 1999, Brand: atwood furnance, Model Number: 8525-IV-DCLP

    HOW TO TAKE OUT FURNANC

    Reply
  49. Rose Bullock

    RV Make: Skyline, RV Model: Nomad deluxe, RV Year: 1993

    My self lighting furnace will not light. Before I had my tank filled it was lighting and working. Now only the blower kicks on. What could be the problem

    Reply
  50. TIMOTHY B. SMELTZER

    RV Make: Tango, RV Model: 30 ft, RV Year: travel trailer

    Why does the fan kick on and the igniter fires, and then comes the flames.
    Runs great for ten minutes the it cuts out and kills the power with it. before the fan kicks on the lights have to flicker and the come back on, then the fan kicks in and the whole process go on every 3 minute. What is wrong?

    Reply
  51. John

    RV Make: Montana , RV Model: 3811MS, RV Year: 2017, Brand: Dometic

    Furnace doesn’t ignite unless I hit the reset multiple times. Sometimes you can hear it clicking and sometimes you can’t

    Reply
  52. Ken Hayes

    RV Make: 2016 forest rivers, RV Model: Lepercan, RV Year: 2016, Brand: Dometic

    the thermostat in my motor home goes blank I have checked all the fuses it came in this morning and ran for a while but now has gone blank again – when the thermostat come on it works fine

    Reply
  53. Kim kary

    RV Make: Crossroads , RV Model: Zinger , RV Year: 2018

    Brand new to. Furnace was working wonderful. Temperature outside dipped to 50 degrees. We have been using the furnace during the day and night to load RT. Replaced lip tanks even though 1 still had a half tank. Turn on furnace. Runs for 30 seconds or less then shuts off.

    Reply
  54. Jeremy Sloan

    RV Make: Cardnal, RV Model: Fithwheel, RV Year: 2000, Brand: Cardnal

    I turn it on it comes on does not light just blows cold air. U can here blower but can’t here it tryen to light

    Reply
  55. Terry Richardson

    RV Make: Terrt, RV Model: 5th wheel , RV Year: 1995

    I can light the pilot on my hot water tank and it stays lit but it goes out when I try to turn the dial to run… it won’t jump over to the main burner

    Reply
  56. sarah

    RV Make: colmen , RV Model: catalina lite, RV Year: 2000, Brand: Hydro Flame, Model Number: 85251VDCLP

    Our furnace will lite but does not stay lit. Could you please tell me what i need to do to fix it

    Reply
  57. Don M

    RV Make: Tiffin Allegro, RV Model: RED 33AA, RV Year: 2018

    My front furnace (kitchen slide out, passenger side) quit working at a stopover coming back from MI. blower would cycle for a few seconds (cold air) and then turn itself off (interdependent shut-off since burner not lit). None of the probable faults in the article above seems to apply. I had high 12’s house VDC, plenty of LP, and the DC fuse in the DC panel was not tripped. AND, the rear furnace was working to heat the bedroom area. So, the front furnace outage seems something more difficult and requiring factory service? It’s now November and I’m not that happy with a brand new RV furnace quitting on me. Factory trip? or something I can check behind the panel near the furnace exhaust?

    Reply
  58. bill

    RV Make: p/u camper, RV Model: scamper, RV Year: 1982, Brand: hyrdoflamefurnce, Model Number: hf 73/2

    have gas no pilot

    Reply
  59. anna

    RV Make: Forest River, RV Model: Cherokee, RV Year: 2008, Brand: Suburban, Model Number: sw6de

    when you try to turn it on it blows a fuse, we had it worked on and put it back in and it worked for about 2 weeks and now it blows the fuse if you try to turn on, dont know whats wrong with it do you have a ideal of what it might be? thank u

    Reply
  60. Jackie

    RV Make: 5thwheel, RV Model: Recreation by design LLC, RV Year: 2018, Brand: Suburban, Model Number: Sf-42q

    I have a gas propane fifth wheel when I turn it on the fan comes on for a few minutes and then it shuts off I have replace both thermostats in the house my trailers is new help

    Reply
  61. Shawn Goit

    RV Make: Forest river, RV Model: Shockwave, RV Year: 2014, Brand: .?, Model Number: .?

    When I first turn on my furnace everything works fine. I toggle my dometic digital thermostat to furnace, I hear the relay in the overhead fan click, the blower start, and within 5-10 seconds the igniters ignite and hot air is blowing out of the ducts. My issue is that when the temperature inside the coach has reached the desired temperature the furnace and fan shut off but will not restart after the 2 degree drop in temperature. The only way I can get the furnace to come back on is to turn the furnace off and wait several seconds then turn it back on. Is this a thermostat issue or another issue?

    Reply
  62. Steve

    RV Make: Coachman , RV Year: 2007 , Brand: Dometic , Model Number: RM2652

    Under floor heating not working

    Reply
  63. M kirby

    RV Make: Forest river, RV Model: Cedar creek 34SATS , RV Year: 2010

    When I turn my furnace on it only wants to blow cold air. I’m a first time rv owner and I’m kinda lost on what to do. Is there someway I can trouble shoot the problem. If there is, please help me.

    Reply
  64. Steven R Wray I

    RV Make: Chevy, RV Model: Winnebago , RV Year: 1988, Brand: Solid state ignition

    My fan is blowing cold air furnace wont ignite. There is a white wire like hanging down from the top but I don’t see any place for it to go. Freezing please help.

    Reply