Honeywell RTH7400 Support Question
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Question posted by rjlongo on December 25th, 2012
System Auto Mode Not Appearing
We have a singe stage heating/cooling system and have wired the thermostat as specified in the instructions. When we step through System Modes, Auto does not appear. There is a note in the manual that says it may not appear based on how the theromostat was installed. But no futher information. Any idea what causes this behavior?
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