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Jason WestJul 26, 2025
How to fix a Honeywell Thermostat with a blank display?
- WWendy AlexanderJul 27, 2025
If your Honeywell Thermostat has a blank display, it indicates a power loss. Check that the batteries are installed correctly by removing the battery cover and ensuring they are in the correct orientation. If they are not, correct their position. If they are correctly installed, try replacing the batteries.