How do I set the Honeywell CM907 thermostat to 24-hour time format and troubleshoot why it resets to 12-hour format?
To set your Honeywell CM907 to the 24-hour time format, you must enter the Installer Set-Up Mode: Move the slider switch to the OFF…
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Honeywell CM907 Programmable Thermostat Instruction Manual — questions & answers
Read product questions and troubleshooting answers linked to Honeywell CM907 Programmable Thermostat Instruction Manual.