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Old 10-31-2014, 10:58 PM   #1
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Furnace blowing cold air

Does anyone know how to fix a furnace blowing cold air on a 2012 220rbs . Fan is on auto and the furnace turns off thinking it's warm but it is not


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Old 10-31-2014, 11:06 PM   #2
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Is the propane tank on, line bled with the stove to make sure no air in line?
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Old 10-31-2014, 11:26 PM   #3
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It's probably shutting down because it's not lighting. When you turn it on, the fan will come on. Shortly after you should hear audible clicks about 2 per second, then they'll stop. If it didn't light it will try it 2 more times. If it senses no fire in the burner, it shuts down everything.
Like above stated, make sure you have plenty of propane and purge out the air by running the stove and/or water heater. After trying it again and you still have issues, try it while the stove is lit on high. Watch the flame on the stove and see if it just about goes out or turns yellow. This is how I found out I had a faulty pressure regulator at the propane tank.
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Old 10-31-2014, 11:37 PM   #4
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Identical Problem solved..

My furnace would run (fan) for about 3/5 minutes then shut off without emitting any heat... Immediately I suspected the worse..BUT.. the propane tank I believed to have propane in it was empty and the auto changeover valve wouldn't work as the second full tank was not turned on.. Opened valve on second tank and had plenty of heat...
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