What are the acceptable temperature ranges for heating and cooling on the Honeywell 6000?
For heating, the acceptable temperature range is 40°F to 90°F (4.5°C to 32°C). For cooling, the acceptable range is 50°F to 99°F (10°C to 37°C). Make sure your temperature settings fall within these ranges for proper system operation.
From the official Honeywell 6000 Series Programmable Thermostat manual, page 18
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