Answer
Nov 21, 2019 - 05:25 AM
The orange wire in the four-pin plug is for a second stage of gas furnace. The orange wire in the nine-pin plug is for the second stage of cooling.
What was the orange wire originally for? Coleman Mach 6536A3351 True Air Digital 2-Stage Heat Pump/Gas Furnace RV Wall Thermostat - Black RV Air Conditioners
Question ID: 2957516 Status:
Open Nov 20, 2019 - 10:36 PM
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Coleman Mach 6536A3351 True Air Digital 2-Stage Heat Pump/Gas Furnace RV Wall Thermostat - Black
The Coleman-Mach True Air Thermostat is a digital 2-stage heat pump and gas furnace wall thermostat that is compatible with Winnebago only. This thermostat will allow you to control both the Coleman Mach Heat Pump system and gas furnace with a single thermostat unit.
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