Atwood Dometic™ 91873 RV Water Heater E.C.O. High Temperature Thermostat Limit Switch, New
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The E.C.O Thermostat is a closed switch that sends voltage to the solenoid valve. The switch opens if the water temperature exceeds 180°F, protecting the water heater from damage. If there is a spark present on your water heater, but no gas flow, it could be a defective E.C.O Temperature Switch.