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Old 01-07-2019, 12:14 PM   #1
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Question Furnace not working

Last night was our first night in our brand new surveyor 250fks. The furnace will come on, run for 30 seconds and turn off. Called dealer and they said bring it to them. Itís a 3 hour round trip. Saw a post about bleeding lines to remove air in lines. Tried that, no luck. Suggestions for trouble shooting appreciated. We are brand new!
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Old 01-07-2019, 12:18 PM   #2
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You said you bled the lines... do all three stove burners light and provide good sized flame?

You also said "brand new". Did it work when you purchased the R/V?

Are you on shore power or battery(ies)?
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Old 01-07-2019, 12:20 PM   #3
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Water heater work on gas? Reefer work on gas or res type?
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Old 01-07-2019, 12:31 PM   #4
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Furnace

Thank you for quick replies! Furnace heated for about 30 minutes, got up to desired temp, shut off and then began the 30 second and shut off. All three burners had good flame. On shore power connected to my daughters house, unit is winterized so have not tested hot water heater. Supposedly that was done by dealer before unit was winterized prior to us picking it up.
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Old 01-07-2019, 12:37 PM   #5
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Try shutting the furnace off completely.

While standing outside outside at the intake/exhaust vent, have someone turn the heater back on and listen for clicking. (igniter spark)

Let us know if you hear sparking.

If the furnace doesn't light it should try the lighting sequence three times before it automatically shuts down the furnace.
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Old 01-07-2019, 12:41 PM   #6
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Furnace

No sparking
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Old 01-07-2019, 03:12 PM   #7
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Have you pulled the fuse for 30 seconds or so to reset it to see if that helps?
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Old 01-07-2019, 03:19 PM   #8
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I know you said you were plugged in at your daughter's house but are you sure you have GOOD 12v power?

Part of the 'prove out' process when the furnace starts is to run the fan and open a sail switch to allow the furnace to light.

If the 12v voltage is low, the fan won't blow fast enough to move the sail switch and allow spark.

Also sometimes the sail switch simply binds or gets some dirt in it not allowing it to move but I'd check voltage first.
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Old 01-12-2019, 11:42 PM   #9
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Furnace

We are having the same problem. The blower motor kicks on runs for 30 seconds and will not ignite (it had been working just fine for 1 1/2 months). We were told to shut the thermostat off then and turn back on also told to shut shore power off and turn battery on then turn shore power back on. The furnace ignited and then we it tried to come back on the blower ran for 30 seconds then cut off. We researched and saw that there is a reset switch on the furnace, but we can't get to our furnace. It is tucked in the corner way in the back of the basement and all the duct work and water lines are in front of it...ugh! Where would the fuse be for the furnace? Why would they do that knowing that the furnace might have to be worked on one day. Any suggestions?
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Old 01-13-2019, 05:47 PM   #10
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I had a similar problem last January on a trip down to Texas. Heater ran fine at first stop in Kentucky. Temps outside were in the 20's. Next stop in Missouri - no heat and temps went sub 0. Nothing I tried got it to work. Next night in Oklahoma, planned on no heat. Turned thermostat to heat on just for giggles while I plugged into the power post at my site. Came around the back of the trailer and the furnace was running. Go figure. Best guess I have, some moisture built up on the sail switch hinge and it froze during the drive to Missouri. Shaking the trailer down the road to Oklahoma broke it loose. It's run perfectly ever since.
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