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Old 10-26-2015, 12:19 PM   #1
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Dometic thermostat E1, furnace fan runs but no heat

I recently removed the AC from my trailer, reconnected the two wires from the Suburban NT-20SEQ furnace to the Dometic AC3313192 thermostat 12v-, 12v+ wires, leaving the blue "comm" wire unconnected. The furnace fan runs for a while then stops, but no heat. the thermostat displays the temp set point, alternating with the E1 error code. The furnace heats if I connect its two wires together. Any ideas why the thermostat is not communicating with the furnace with this setup? How should the furnace be connected to this thermostat?
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Old 10-26-2015, 12:53 PM   #2
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http://www.bdub.net/manuals/Suburban_Service_Manual.pdf is the service manual


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Old 10-26-2015, 01:07 PM   #3
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http://www.dometic.com/QBankFiles3/E...nual_17590.pdf. Read page 3 you must initialize the system for it to communicate with the controller


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