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Erika WebbJul 30, 2025
Why is the display blank on my Venstar Thermostat?
- DDaniel SkinnerJul 30, 2025
A blank display on your Venstar Thermostat typically indicates a lack of proper power. Ensure that the power to the furnace is turned on and that there is 24VAC between R and W. If the C wire is used, there should be 24VAC between R and C.