RTH111B Honeywell thermostat help


Old 04-10-11, 02:47 PM
nmurphy's Avatar
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Question RTH111B Honeywell thermostat help

Hello, I just recently moved into my house in Feb. and the switches on the thermostat work except the Fan "on". I have tried switching the thermostat to cool and fan on but that doesn't work either. I do not have air conditioning as well, would that be why? Also taking the cover off i noticed there are only two wires connected plus what looks like a jumper. My furnace is a Comfortmaker. (gas not electric)

I am sorry if I have not supplied enough information and will be more than happy to gather any and all other info need to aid in this trouble shooting process.
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Old 04-11-11, 12:49 PM
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you need another wire hooked to G on stat and G in furnace to use the fan function from the thermostat
Old 04-11-11, 06:59 PM
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What letter was jumpered on the furnace?

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