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Old 09-06-2019, 06:28 PM   #1
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rv furnace

my furnace starts up and ignites for about 10seconds then shuts off after about 30 seconds ignites and does the same thing,im replacing thermostat,it has 4 separate buttons,cool-off-furn----fan-auto-on------thermostat----and one other butt,dont recall the function,some body told me to put the two thermostat wires together and if furnace kept running,he named some part to check.the whole unit has 5 wires and they start at +7.5---cool---fur--hi fan--fan---gnd.i don't know wich wires to hook together,the color sequence are red-yellow-white-blue-brown-green,i know this is pretty vague.any info would be appreciated

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Old 09-10-2019, 09:36 PM   #2
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Possibly a 'sail switch' failure. This is a safety device that won't allow the burner to stay on if not moving enough air. From your description, you probably need to have a mobile tech check it out, might be a control board problem also.

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Old 09-16-2019, 03:32 PM   #3
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If you are out of propane (or you tank is turned off) you will get the same symptom that you are getting. Donít ask me how I know that.
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Old 09-16-2019, 03:45 PM   #4
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As mentioned before sail switch or if you don't have a flying insect screen over the inlet and exhaust a critter may have built a home not allowing enough air flow.
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