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Oct 27, 2017 - 09:49 AM
The purple & brown wires on the Coleman Mach 7330-3351 thermostat are for a two stage gas RV furnace that didn't exist until recently. You would not use those wires for the standard single stage RV gas furnace.
Appliances > Air Conditioners
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Oct 27, 2017 - 09:49 AM
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