RTH6400 Series Wire Diagram - Honeywell
RTH6400 Series Wire Diagram
Similar Questions
Rth6400d Wiring Question
My old thermostat had a black wire going to terminal C. Where do I put the black wire on my new HW R...
My old thermostat had a black wire going to terminal C. Where do I put the black wire on my new HW R...
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Honeywell Rth6400 Series
I have mine set 4 ways througout the day. 78 for day and at 4:00 pm to change to 75 and 10:00 at nig...
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