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Recent Honeywell RTH6300B-related questions: Rth6300b Wiring Issues.Replacing a manual/mercury stat with the above. Old stat had G, W, Y, RC and RH wires. the RH was a ... How To Change T-stat From Celcius To Farenheit
The Thermostat Doesn't Light Up.
I changed the batteries and the thermostat still doesn't light up although it is functional. What ca...