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Typical RV furnace operation is fan on for 30 seconds to purge system and activate sail switch. This in turn sequences spark and has flow
The fan will run continuously until set temp on thermostat is reached and when burner shuts off fan runs 1 to 2 more minutes to purge system
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2007 GMC Classic club cab 4x4 Duramax LBZ
2014 Alpine 3010 RE. 34 foot fifth wheel
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