RVerDiane
Madison, Wisconsin
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Joined: 07/02/2005
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My furnace on my '94 MH is not putting out heat; The fan blows but it blows cold air.
Any ideas?
Thanks.
Diane
Madison, WI
'94 Horizon 21 1/2'
towing '04 Honda CRV
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Weazletoe
Idaho
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Joined: 04/12/2010
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Need some details. Does the blower just run constantly, or run a few mins and shut off? Without knowing that its hard to say. Could be anything from a bad gas valve, to a thermocoupler.
TV- 1990 Chevy 3500, 454, 3 speed, 4x4
5er - 1991 Prowler, 25ft
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rk911
Wheaton IL
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pardon me but simple things first. do you have LP in the tank(s) and is the supply valve on?
73,
rich, n9dko
www.bananaboatbytes.com
I know a guy who's addicted to brake fulid. He says he can stop anytime.
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2000 Itasca Suncruiser 35U
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RVerDiane
Madison, Wisconsin
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Yes I have LP and it's on.
The fan goes on and stays on; because it is blowing cold air I turned it off after several minutes.
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rk911
Wheaton IL
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RVerDiane wrote:Yes I have LP and it's on.
The fan goes on and stays on; because it is blowing cold air I turned it off after several minutes.
an RV furnace works just the opposite of your home furnace. at home the burner ignites and at a certain temperature the fan kicks in. in an RV the blower starts first and after a few seconds the burner will light.
if the LP tank is full and the gas is flowing...the stove burners light, etc...then i'd agree with the previous poster concerning the thermocouple, control board, etc.
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bukhrn
Lanexa, Va
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rk911 wrote:RVerDiane wrote:Yes I have LP and it's on.
The fan goes on and stays on; because it is blowing cold air I turned it off after several minutes.
an RV furnace works just the opposite of your home furnace. at home the burner ignites and at a certain temperature the fan kicks in. in an RV the blower starts first and after a few seconds the burner will light.
if the LP tank is full and the gas is flowing...the stove burners light, etc...then i'd agree with the previous poster concerning the thermocouple, control board, etc. Yup, light the stove top burners to make sure all the air is out of the lines.
2007 Forester 2941DS
2005 KIA Spectra
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bartlettj
Forest Grove, OR
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Make sure the OPD high flow valve on the propane tanks hasn't tripped- close the valves and then slowly reopen them, then make sure you can light all the burners on your stove simultaneously without them getting "dimmer" as you turn one of them up or down.
After that, check your ignitor. I had this problem on my popup's furnace. Some of these things use a spark gap ignitor that doubles as a flame sensor by checking the amount of ions that can flow through the flame. If the ignitor is corroded, bent, or isn't in the flame path then it won't sense a flame and the furnace will shut down. A lot of the furnace controllers have an LED on them that blinks certain codes if the furnace isn't working normally. There's usually a little sticker on there behind the panel that tells you what they mean.
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John&Joey
Some Location
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Is this the first time you've used the furnace for the season? If yes, then maybe this will help you.
When you turn on the furnace you should hear the fan come on, then a click, then the sound of the flame. If you hear the click and no flame or even the flame but then hear it go out do this: Without turning the furnace off, just turn the thermostate to the lowest setting. Wait about 10 seconds then turn it all the way up. Listen for the click and the flame. You may have to do this 6-12 times before the furnace will take a hold and work correctly.
If that doesn't work then you may need to do some repair on the furnace.
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sayby1campers
Rock Hill,SC
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What's ur thermostat set at?? Heat won't come on if trailer temp is above thermo settings.
DW, DD(10y/o) and CoCo our Sharpei(wrinkle dog)
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RRinNFla
Northeast Florida
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This has happened to me twice. Both times the root cause was mud daubers blocking the ignitor.
Richard
2007 Keystone Cougar 291RLS
2008 Ford F250 V10 (Gas), EC, SB, 4X4
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